Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into sub_sequence_op

doc/design/ops/images/2_level_rnn.dot

 digraph G {
 
-  rnn [label="1-th level RNN" shape=box]
+  rnn [label="1st level RNN" shape=box]
 
   subgraph cluster0 {
     label = "time step 0"
@@ -8,7 +8,7 @@ digraph G {
     sent0 [label="sentence"]
     sent1 [label="sentence"]
 
-    rnn1 [label="2-th level RNN" shape=box]
+    rnn1 [label="2nd level RNN" shape=box]
 
     sent0 -> rnn1
     sent1 -> rnn1
@@ -20,7 +20,7 @@ digraph G {
     sent2 [label="sentence"]
     sent3 [label="sentence"]
 
-    rnn2 [label="2-th level RNN" shape=box]
+    rnn2 [label="2nd level RNN" shape=box]
 
     sent2 -> rnn2
     sent3 -> rnn2
@@ -32,7 +32,7 @@ digraph G {
     sent4 [label="sentence"]
     sent5 [label="sentence"]
 
-    rnn3 [label="2-th level RNN" shape=box]
+    rnn3 [label="2nd level RNN" shape=box]
 
     sent4 -> rnn3
     sent5 -> rnn3

doc/design/ops/rnn.md

 # RNNOp design
 
-This document is about an RNN operator which requires that instances in a mini-batch have the same length.  We will have a more flexible RNN operator.
+This document describes the RNN (Recurrent Neural Network) operator and how it is implemented in PaddlePaddle. The RNN op requires that all instances in a mini-batch have the same length. We will have a more flexible dynamic RNN operator in the future.
 
 ## RNN Algorithm Implementation
 
-<p aligh="center">
+<p align="center">
 <img src="./images/rnn.jpg"/>
 </p>
 
 The above diagram shows an RNN unrolled into a full network.
 
-There are several important concepts:
+There are several important concepts here:
 
-- *step-net*: the sub-graph to run at each step,
-- *memory*, $h_t$, the state of the current step,
-- *ex-memory*, $h_{t-1}$, the state of the previous step,
-- *initial memory value*, the ex-memory of the first step.
+- *step-net*: the sub-graph that runs at each step.
+- *memory*, $h_t$, the state of the current step.
+- *ex-memory*, $h_{t-1}$, the state of the previous step.
+- *initial memory value*, the memory of the first (initial) step.
 
 ### Step-scope
 
-There could be local variables defined in step-nets.  PaddlePaddle runtime realizes these variables in *step-scopes* -- scopes created for each step.
+There could be local variables defined in each step-net.  PaddlePaddle runtime realizes these variables in *step-scopes* which are created for each step.
 
-<p aligh="center">
+<p align="center">
 <img src="./images/rnn.png"/><br/>
-Figure 2 the RNN's data flow
+Figure 2 illustrates the RNN's data flow
 </p>
 
-Please be aware that all steps run the same step-net.  Each step
+Please be aware that every step runs the same step-net.  Each step does the following:
 
-1. creates the step-scope,
-2. realizes local variables, including step-outputs, in the step-scope, and
-3. runs the step-net, which could use these variables.
+1. Creates the step-scope.
+2. Initializes the local variables including step-outputs, in the step-scope.
+3. Runs the step-net, which uses the above mentioned variables.
 
-The RNN operator will compose its output from step outputs in step scopes.
+The RNN operator will compose its output from step outputs in each of the step scopes.
 
 ### Memory and Ex-memory
 
-Let's give more details about memory and ex-memory via a simply example:
+Let's give more details about memory and ex-memory using a simple example:
 
 $$
 h_t = U h_{t-1} + W x_t
 $$,
 
-where $h_t$ and $h_{t-1}$ are the memory and ex-memory of step $t$'s respectively.
+where $h_t$ and $h_{t-1}$ are the memory and ex-memory (previous memory) of step $t$ respectively.
 
-In the implementation, we can make an ex-memory variable either "refers to" the memory variable of the previous step,
-or copy the value of the previous memory value to the current ex-memory variable.
+In the implementation, we can make an ex-memory variable either "refer to" the memory variable of the previous step,
+or copy the memory value of the previous step to the current ex-memory variable.
 
 ### Usage in Python
 
 For more information on Block, please refer to the [design doc](https://github.com/PaddlePaddle/Paddle/blob/develop/doc/design/block.md).
 
-We can define an RNN's step-net using Block:
+We can define an RNN's step-net using a Block:
 
 ```python
 import paddle as pd
 
-X = some_op() # x is some operator's output, and is a LoDTensor
+X = some_op() # x is some operator's output and is a LoDTensor
 a = some_op()
 
 # declare parameters
@@ -68,7 +68,7 @@ with rnn.stepnet():
     x = rnn.add_input(X)
     # declare a memory (rnn's step)
     h = rnn.add_memory(init=a)
-    # h.pre_state() means previous memory of rnn
+    # h.pre_state(), the previous memory of rnn
     new_state = pd.add_two( pd.matmul(W, x) + pd.matmul(U, h.pre_state()))
     # update current memory
     h.update(new_state)
@@ -80,19 +80,19 @@ out = rnn()
 
 Python API functions in above example:
 
-- `rnn.add_input` indicates the parameter is a variable that will be segmented into step-inputs.
-- `rnn.add_memory` creates a variable used as the memory.
-- `rnn.add_outputs` mark the variables that will be concatenated across steps into the RNN output.
+- `rnn.add_input`: indicates that the parameter is a variable that will be segmented into step-inputs.
+- `rnn.add_memory`: creates a variable used as the memory.
+- `rnn.add_outputs`: marks the variables that will be concatenated across steps into the RNN output.
 
 ### Nested RNN and LoDTensor
 
 An RNN whose step-net includes other RNN operators is known as an *nested RNN*.
 
-For example, we could have a 2-level RNN, where the top level corresponds to paragraphs, and the lower level corresponds to sentences.
+For example, we could have a 2-level RNN, where the top level corresponds to paragraphs, and the lower level corresponds to sentences. Each step of the higher level RNN also receives an input from the corresponding step of the lower level, and additionally the output from the previous time step at the same level.
 
-The following figure illustrates the feeding of text into the lower level, one sentence each step, and the feeding of step outputs to the top level. The final top level output is about the whole text.
+The following figure illustrates feeding in text into the lower level, one sentence at a step, and the feeding in step outputs to the top level. The final top level output is about the whole text.
 
-<p aligh="center">
+<p align="center">
 <img src="./images/2_level_rnn.png"/>
 </p>
 
@@ -110,7 +110,7 @@ a = some_op()
 
 # chapter_data is a set of 128-dim word vectors
 # the first level of LoD is sentence
-# the second level of LoD is chapter
+# the second level of LoD is a chapter
 chapter_data = pd.Variable(shape=[None, 128], type=pd.lod_tensor, level=2)
 
 def lower_level_rnn(paragraph):
@@ -138,14 +138,14 @@ with top_level_rnn.stepnet():
         pd.matmul(W0, paragraph_data) + pd.matmul(U0, h.pre_state()))
     top_level_rnn.add_outputs(h)
 
-# just output the last step
+# output the last step
 chapter_out = top_level_rnn(output_all_steps=False)
 ```
 
-in above example, the construction of the `top_level_rnn` calls  `lower_level_rnn`.  The input is a LoD Tensor. The top level RNN segments input text data into paragraphs, and the lower level RNN segments each paragraph into sentences.
+In the above example, the construction of the `top_level_rnn` calls  `lower_level_rnn`.  The input is an LoD Tensor. The top level RNN segments input text data into paragraphs, and the lower level RNN segments each paragraph into sentences.
 
-By default, the `RNNOp` will concatenate the outputs from all the time steps,
-if the `output_all_steps` set to False, it will only output the final time step.
+By default, the `RNNOp` will concatenate the outputs from all the time steps.
+If the `output_all_steps` is set to False, it will only output the final time step.
 
 
 <p align="center">

doc/design/ops/sequence_decoder.md

 # Design: Sequence Decoder Generating LoDTensors
-In tasks such as machine translation and image to text, 
-a [sequence decoder](https://github.com/PaddlePaddle/book/blob/develop/08.machine_translation/README.md) is necessary to generate sequences.
+In tasks such as machine translation and visual captioning,
+a [sequence decoder](https://github.com/PaddlePaddle/book/blob/develop/08.machine_translation/README.md) is necessary to generate sequences, one word at a time.
 
 This documentation describes how to implement the sequence decoder as an operator.
 
 ## Beam Search based Decoder
-The [beam search algorithm](https://en.wikipedia.org/wiki/Beam_search) is necessary when generating sequences, 
-it is a heuristic search algorithm that explores the paths by expanding the most promising node in a limited set.
+The [beam search algorithm](https://en.wikipedia.org/wiki/Beam_search) is necessary when generating sequences. It is a heuristic search algorithm that explores the paths by expanding the most promising node in a limited set.
 
-In the old version of PaddlePaddle, a C++ class `RecurrentGradientMachine` implements the general sequence decoder based on beam search, 
-due to the complexity, the implementation relays on a lot of special data structures, 
-quite trivial and hard to be customized by users.
+In the old version of PaddlePaddle, the C++ class `RecurrentGradientMachine` implements the general sequence decoder based on beam search, due to the complexity involved, the implementation relies on a lot of special data structures that are quite trivial and hard to be customized by users.
 
-There are a lot of heuristic tricks in the sequence generation tasks, 
-so the flexibility of sequence decoder is very important to users.
+There are a lot of heuristic tricks in the sequence generation tasks, so the flexibility of sequence decoder is very important to users.
 
-During PaddlePaddle's refactoring work,
-some new concept is proposed such as [LoDTensor](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/lod_tensor.md) and [TensorArray](https://github.com/PaddlePaddle/Paddle/blob/develop/doc/design/tensor_array.md) that can better support sequence usage,
-and they can help to make the implementation of beam search based sequence decoder **more transparent and modular** .
+During the refactoring of PaddlePaddle, some new concepts are proposed such as:  [LoDTensor](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/lod_tensor.md) and [TensorArray](https://github.com/PaddlePaddle/Paddle/blob/develop/doc/design/tensor_array.md) that can better support the sequence usage, and they can also help make the implementation of beam search based sequence decoder **more transparent and modular** .
 
-For example, the RNN sates, candidates IDs and probabilities of beam search can be represented as `LoDTensors`;
+For example, the RNN states, candidates IDs and probabilities of beam search can be represented all as `LoDTensors`;
 the selected candidate's IDs in each time step can be stored in a `TensorArray`, and `Packed` to the sentences translated.
 
 ## Changing LoD's absolute offset to relative offsets
-The current `LoDTensor` is designed to store levels of variable-length sequences,
-it stores several arrays of integers each represents a level.
+The current `LoDTensor` is designed to store levels of variable-length sequences. It stores several arrays of integers where each represents a level.
 
-The integers in each level represents the begin and end (not inclusive) offset of a sequence **in the underlying tensor**, 
-let's call this format the **absolute-offset LoD** for clear.
+The integers in each level represent the begin and end (not inclusive) offset of a sequence **in the underlying tensor**,
+let's call this format the **absolute-offset LoD** for clarity.
 
-The relative-offset LoD can fast retrieve any sequence but fails to represent empty sequences, for example, a two-level LoD is as follows
+The relative-offset LoD can retrieve any sequence very quickly but fails to represent empty sequences, for example, a two-level LoD is as follows
 ```python
 [[0, 3, 9]
  [0, 2, 3, 3, 3, 9]]
@@ -41,8 +34,7 @@ The first level tells that there are two sequences:
 while on the second level, there are several empty sequences that both begin and end at `3`.
 It is impossible to tell how many empty second-level sequences exist in the first-level sequences.
 
-There are many scenarios that relay on empty sequence representation,
-such as machine translation or image to text, one instance has no translations or the empty candidate set for a prefix.
+There are many scenarios that rely on empty sequence representation, for example in machine translation or visual captioning, one instance has no translation or the empty candidate set for a prefix.
 
 So let's introduce another format of LoD,
 it stores **the offsets of the lower level sequences** and is called **relative-offset** LoD.
@@ -60,13 +52,12 @@ their offsets in the second-level LoD is `[0, 3)` and `[3, 5)`.
 The second level is the same with the relative offset example because the lower level is a tensor.
 It is easy to find out the second sequence in the first-level LoD has two empty sequences.
 
-The following demos are based on relative-offset LoD.
+The following examples are based on relative-offset LoD.
 
 ## Usage in a simple machine translation model
-Let's start from a simple machine translation model that is simplified from [machine translation chapter](https://github.com/PaddlePaddle/book/tree/develop/08.machine_translation) to draw a simple blueprint of what a sequence decoder can do and how to use it.
+Let's start from a simple machine translation model that is simplified from the [machine translation chapter](https://github.com/PaddlePaddle/book/tree/develop/08.machine_translation) to draw a blueprint of what a sequence decoder can do and how to use it.
 
-The model has an encoder that learns the semantic vector from a sequence,
-and a decoder which uses the sequence decoder to generate new sentences.
+The model has an encoder that learns the semantic vector from a sequence, and a decoder which uses the sequence encoder to generate new sentences.
 
 **Encoder**
 ```python
@@ -154,34 +145,33 @@ def generate():
 
 translation_ids, translation_scores = decoder()
 ```
-The `decoder.beam_search` is a operator that given the candidates and the scores of translations including the candidates,
-return the result of the beam search algorithm.
+The `decoder.beam_search` is an operator that, given the candidates and the scores of translations including the candidates,
+returns the result of the beam search algorithm.
 
-In this way, users can customize anything on the inputs or outputs of beam search, for example, two ways to prune some translation prefixes
+In this way, users can customize anything on the input or output of beam search, for example:
 
-1. meke the correspondind elements in `topk_generated_scores` zero or some small values, beam_search will discard this candidate.
-2. remove some specific candidate in `selected_ids`
-3. get the final `translation_ids`, remove the translation sequence in it.
+1. Make the corresponding elements in `topk_generated_scores` zero or some small values, beam_search will discard this candidate.
+2. Remove some specific candidate in `selected_ids`.
+3. Get the final `translation_ids`, remove the translation sequence in it.
 
-The implementation of sequence decoder can reuse the C++ class [RNNAlgorithm](https://github.com/Superjom/Paddle/blob/68cac3c0f8451fe62a4cdf156747d6dc0ee000b3/paddle/operators/dynamic_recurrent_op.h#L30),
-so the python syntax is quite similar to a [RNN](https://github.com/Superjom/Paddle/blob/68cac3c0f8451fe62a4cdf156747d6dc0ee000b3/doc/design/block.md#blocks-with-for-and-rnnop).
+The implementation of sequence decoder can reuse the C++ class:  [RNNAlgorithm](https://github.com/Superjom/Paddle/blob/68cac3c0f8451fe62a4cdf156747d6dc0ee000b3/paddle/operators/dynamic_recurrent_op.h#L30),
+so the python syntax is quite similar to that of an  [RNN](https://github.com/Superjom/Paddle/blob/68cac3c0f8451fe62a4cdf156747d6dc0ee000b3/doc/design/block.md#blocks-with-for-and-rnnop).
 
-Both of them are two-level `LoDTensors`
+Both of them are two-level `LoDTensors`:
 
-- the first level represents `batch_size` of (source) sentences;
-- the second level represents the candidate ID sets for translation prefix.
+- The first level represents `batch_size` of (source) sentences.
+- The second level represents the candidate ID sets for translation prefix.
 
-for example, 3 source sentences to translate, and has 2, 3, 1 candidates.
+For example, 3 source sentences to translate, and has 2, 3, 1 candidates.
 
-Unlike an RNN, in sequence decoder, the previous state and the current state have different LoD and shape,
-a `lod_expand` operator is used to expand the LoD of the previous state to fit the current state.
+Unlike an RNN, in sequence decoder, the previous state and the current state have different LoD and shape, and an `lod_expand` operator is used to expand the LoD of the previous state to fit the current state.
 
-For example, the previous state
+For example, the previous state:
 
 * LoD is `[0, 1, 3][0, 2, 5, 6]`
 * content of tensor is `a1 a2 b1 b2 b3 c1`
 
-the current state stored in `encoder_ctx_expanded`
+the current state is stored in `encoder_ctx_expanded`:
 
 * LoD is `[0, 2, 7][0 3 5 8 9 11 11]`
 * the content is
@@ -192,54 +182,48 @@ the current state stored in `encoder_ctx_expanded`
   - b3 b3
   - None (c1 has 0 candidates, so c1 is dropped)
 
-Benefit from the relative offset LoD, empty candidate set can be represented naturally.
+The benefit from the relative offset LoD is that the empty candidate set can be represented naturally.
 
-the status in each time step can be stored in `TensorArray`, and `Pack`ed to a final LoDTensor, the corresponding syntax is 
+The status in each time step can be stored in `TensorArray`, and `Pack`ed to a final LoDTensor. The corresponding syntax is:
 
 ```python
 decoder.output(selected_ids)
 decoder.output(selected_generation_scores)
 ```
 
-the `selected_ids` is the candidate ids for the prefixes, 
-it will be `Packed` by `TensorArray` to a two-level `LoDTensor`,
-the first level represents the source sequences,
-the second level represents generated sequences.
+The `selected_ids` are the candidate ids for the prefixes, and will be `Packed` by `TensorArray` to a two-level `LoDTensor`, where the first level represents the source sequences and the second level represents generated sequences.
 
-Pack the `selected_scores` will get a `LoDTensor` that stores scores of each candidate of translations.
+Packing the `selected_scores` will get a `LoDTensor` that stores scores of each translation candidate.
 
-Pack the `selected_generation_scores` will get a `LoDTensor`, and each tail is the probability of the translation.
+Packing the `selected_generation_scores` will get a `LoDTensor`, and each tail is the probability of the translation.
 
 ## LoD and shape changes during decoding
 <p align="center">
   <img src="./images/LOD-and-shape-changes-during-decoding.jpg"/>
 </p>
 
-According the image above, the only phrase to change LoD is beam search.
+According to the image above, the only phase that changes the LoD is beam search.
 
 ## Beam search design
-The beam search algorthm will be implemented as one method of the sequence decoder, it has 3 inputs
+The beam search algorithm will be implemented as one method of the sequence decoder and has 3 inputs:
 
-1. `topk_ids`, top K candidate ids for each prefix.
+1. `topk_ids`, the top K candidate ids for each prefix.
 2. `topk_scores`, the corresponding scores for `topk_ids`
 3. `generated_scores`, the score of the prefixes.
 
-All of the are LoDTensors, so that the sequence affilication is clear.
-Beam search will keep a beam for each prefix and select a smaller candidate set for each prefix.
+All of these are LoDTensors, so that the sequence affiliation is clear. Beam search will keep a beam for each prefix and select a smaller candidate set for each prefix.
 
-It will return three variables
+It will return three variables:
 
 1. `selected_ids`, the final candidate beam search function selected for the next step.
 2. `selected_scores`, the scores for the candidates.
-3. `generated_scores`, the updated scores for each prefixes (with the new candidates appended).
+3. `generated_scores`, the updated scores for each prefix (with the new candidates appended).
 
 ## Introducing the LoD-based `Pack` and `Unpack` methods in `TensorArray`
-The `selected_ids`, `selected_scores` and `generated_scores` are LoDTensors,
-and they exist in each time step,
+The `selected_ids`, `selected_scores` and `generated_scores` are LoDTensors that exist at each time step,
 so it is natural to store them in arrays.
 
-Currently, PaddlePaddle has a module called `TensorArray` which can store an array of tensors,
-the results of beam search are better to store in a `TensorArray`.
+Currently, PaddlePaddle has a module called `TensorArray` which can store an array of tensors. It is better to store the results of beam search in a `TensorArray`.
 
-The `Pack` and `UnPack` in `TensorArray` are used to package tensors in the array to a `LoDTensor` or split the `LoDTensor` to an array of tensors. 
-It needs some extensions to support pack or unpack an array of `LoDTensors`.
+The `Pack` and `UnPack` in `TensorArray` are used to pack tensors in the array to an `LoDTensor` or split the `LoDTensor` to an array of tensors.
+It needs some extensions to support the packing or unpacking an array of `LoDTensors`.

paddle/memory/README.md

 # Region-based Heterogeneous Memory Management
+## Design
 
-Please check out the [design documentation](http://gangliao.me) to find out more details about
-buddy memory allocator for both CPU and GPU.
+### Usage
+
+To allocate 4KB CPU memory:
+
+```cpp
+p = memory::Alloc(platform::CPUPlace(), 4*1024);
+```
+
+To allocate 4KB memory on the 3rd GPU:
+
+```cpp
+p = memory::Alloc(platform::GPUPlace(2), 4*1024);
+```
+
+To free memory and check the so-far used amount of memory on a place:
+
+```cpp
+auto pl = platform::GPUPlace(0);
+p = memory::Alloc(pl, 4*1024);
+cout << memory::Used(pl);
+memory::Free(pl, p);
+```
+
+### API
+
+In `paddle/memory/memory.h` we have:
+
+```cpp
+namespace memory {
+template <typename Place> void* Alloc(Place, size_t);
+template <typename Place> void Free(Place, void*);
+template <typename Place> size_t Used(Place);
+}  // namespace memory
+```
+
+These function templates have specializations on either `platform::CPUPlace` or `platform::GPUPlace`:
+
+```cpp
+template<>
+void* Alloc<CPUPlace>(CPUPlace p, size_t size) {
+  return GetCPUBuddyAllocator()->Alloc(size);
+}
+```
+
+and 
+
+```cpp
+template<>
+void Alloc<GPUPlace>(GPUPlace p, size_t size) {
+  return GetGPUBuddyAllocator(p.id)->Alloc(size);
+}
+```
+
+Similar specializations exist for `Free` and `Used`.
+
+### Implementation
+
+`GetCPUBuddyAllocator` and `GetGPUBuddyAllocator` are singletions.
+
+```cpp
+BuddyAllocator* GetCPUBuddyAllocator() {
+  static BuddyAllocator* a = NULL;
+  if (a == NULL) {
+    a = new BuddyAllocator(new CPUAllocator /*backup allocator*/, ...);
+  }
+  return a;
+}
+
+BuddyAllocator* GetGPUBuddyAllocator(int gpu_id) {
+  static BuddyAllocator* as = NULL;
+  if (as == NULL) {
+    as = new BuddyAllocator*[platform::NumGPUs()];
+    for (int gpu = 0; gpu < platform::NumGPUs(); gpu++) {
+      as[gpu] = new BuddyAllocator(new GPUAllocator(gpu) /* backup allocator */, ...);
+    }
+  }
+  return as[gpu_id);
+```
+
+#### `BuddyAllocator`
+
+`BuddyAllocator` implements the buddy allocation algorithm.  Its constructor takes parameters only related with the algorithm:
+
+```cpp
+BuddyAllocator::BuddyAllocator(initial_pool_size, max_pool_size) {
+  ...
+}
+```
+
+Please be aware that **`BuddyAllocator` always allocate aligned memory**, aligned on 32-bytes, which can hold a `BuddyAllocator::Block` object:
+
+```cpp
+class BuddyAllocator {
+ private:
+  struct Block {
+    size_t size;
+    Block* left, right;
+    size_t index; // allocator id
+  };
+  ...
+};
+```
+
+Because BuddyAllocator has the meta-data of each block, it can trace the used memory -- record the amount returned by `Alloc` freed in `Free`.  Instead, `CPUAllocator` and `GPUAllocator` doesn't know the size of freed memory block and cannot do the trace.
+
+#### System Allocators
+
+The `GPUAllocator` and `CPUAllocator` are calls *system allocators*.  They work as the fallback allocators of `BuddyAllocator`.
+
+## Justification
+
+I got inspiration from Majel and Caffe2, though above design look different from both.
+
+### Caffe2
+
+In Caffe2, `Tensor<Context>::mutable_data()` allocates the memroy.  In particular, [`Tensor<Context>::mutable_data`](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/tensor.h#L523) calls [`Tensor<Context>::raw_mutable_data`](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/tensor.h#L459), which in turn calls [`Context::New`](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/tensor.h#L479).
+
+There are two implementations of `Context`:
+
+1. [`CPUContext`](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/context.h#L105), whose [`New` method](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/context.h#L131) calls [`g_cpu_allocator.get()->New(size_t)`](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/context.cc#L15) to allocate the memory.
+
+1. [`CUDAContext`](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/context_gpu.h#L99), which has a data member [`int gpu_id_`](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/context_gpu.h#L202).  This looks very similar to class `majel::GPUPlace`, who also has an `int id_` data member.   `CUDAContext::New(size_t)` calls [`g_cub_allocator->DeviceAllocate(&ptr, nbytes)`](https://github.com/caffe2/caffe2/blob/v0.7.0/caffe2/core/context_gpu.cu#L355) to allocate the memory.
+
+### Majel
+
+In Majel, there are basically two allocator types:
+
+1. `cpu::SystemAllocator`, which has similar functionality to `caffe2::CPUContext::New/Delete`.
+1. `gpu::SystemAllocator`, which has similar functionality to `caffe2::CUDAContext::New/Delete`.
+
+However, memory allocation is not via these two allocators.  Instead, these two allocators are defined in hidden namespaces.
+
+In Majel there are hidden global variables like:
+
+1. `cpu::SystemAllocator g_cpu_allocator`, and
+1. `vector<gpu::SystemAllocator*> g_gpu_allocators(NUM_GPUS)`.
+
+Programs allocate memory via a BuddyAllocator, which can take the `g_cpu_allocator` or a `g_gpu_allocators[gpu_id]` as its *fallback allocator*, so that if BuddyAllocator cannot find a block in its memory pool, it extends its memory pool by calling the fallback allocator's `New(size_t)`.

paddle/operators/CMakeLists.txt

@@ -9,6 +9,7 @@ function(op_library TARGET)
     set(OP_LIBRARY ${TARGET} ${OP_LIBRARY} PARENT_SCOPE)
     set(cc_srcs)
     set(cu_srcs)
+    set(cu_cc_srcs)
     set(op_common_deps operator op_registry math_function)
     set(options "")
     set(oneValueArgs "")
@@ -22,6 +23,9 @@ function(op_library TARGET)
         if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${TARGET}.cc)
             list(APPEND cc_srcs ${TARGET}.cc)
         endif()
+        if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${TARGET}.cu.cc)
+            list(APPEND cu_cc_srcs ${TARGET}.cu.cc)
+        endif()
         if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${TARGET}.cu)
             list(APPEND cu_srcs ${TARGET}.cu)
         endif()
@@ -29,6 +33,8 @@ function(op_library TARGET)
         foreach(src ${op_library_SRCS})
             if (${src} MATCHES ".*\\.cu$")
                 list(APPEND cu_srcs ${src})
+            elseif(${src} MATCHES ".*\\.cu.cc$")
+                list(APPEND cu_cc_srcs ${src})
             elseif(${src} MATCHES ".*\\.cc$")
                 list(APPEND cc_srcs ${src})
             else()
@@ -43,7 +49,7 @@ function(op_library TARGET)
     endif()
 
     if (WITH_GPU)
-        nv_library(${TARGET} SRCS ${cc_srcs} ${cu_srcs} DEPS ${op_library_DEPS}
+        nv_library(${TARGET} SRCS ${cc_srcs} ${cu_cc_srcs} ${cu_srcs} DEPS ${op_library_DEPS}
                 ${op_common_deps})
     else()
         cc_library(${TARGET} SRCS ${cc_srcs} DEPS ${op_library_DEPS}
@@ -140,7 +146,9 @@ function(op_library TARGET)
 
     # pybind USE_CPU_ONLY_OP
     list(LENGTH cu_srcs cu_srcs_len)
-    if (${pybind_flag} EQUAL 0 AND ${cu_srcs_len} EQUAL 0)
+    list(LENGTH cu_cc_srcs cu_cc_srcs_len)
+
+    if (${pybind_flag} EQUAL 0 AND ${cu_srcs_len} EQUAL 0 AND ${cu_cc_srcs_len} EQUAL 0)
         file(APPEND ${pybind_file} "USE_CPU_ONLY_OP(${TARGET});\n")
         set(pybind_flag 1)
     endif()
@@ -160,11 +168,12 @@ set(DEPS_OPS
     recurrent_op
     dynamic_recurrent_op
     softmax_with_cross_entropy_op
+    softmax_op
+    sequence_softmax_op
     sum_op
     pool_op
     pool_with_index_op
     conv_op
-    lstm_op
     conv_transpose_op
     nccl_op
     sequence_conv_op
@@ -174,13 +183,20 @@ set(DEPS_OPS
     array_to_lod_tensor_op
     lstm_op
     tensor_array_read_write_op
-    gru_op)
+    gru_op
+    adagrad_op
+    sgd_op)
+
 
 op_library(cond_op SRCS cond_op.cc DEPS framework_proto tensor operator net_op)
 op_library(cross_entropy_op DEPS cross_entropy)
 op_library(softmax_with_cross_entropy_op DEPS cross_entropy softmax)
+op_library(softmax_op DEPS softmax)
+op_library(sequence_softmax_op DEPS softmax)
+op_library(sum_op DEPS selected_rows_functor)
+op_library(sgd_op DEPS selected_rows_functor)
+op_library(adagrad_op DEPS selected_rows_functor)
 op_library(conv_op DEPS vol2col)
-op_library(sum_op DEPS net_op selected_rows_functor)
 op_library(pool_op DEPS pooling)
 op_library(pool_with_index_op DEPS pooling)
 op_library(lod_rank_table_op SRCS lod_rank_table_op.cc DEPS lod_rank_table)
@@ -220,6 +236,6 @@ cc_test(dynamic_recurrent_op_test SRCS dynamic_recurrent_op_test.cc
         rnn/recurrent_op_utils.cc
         DEPS dynamic_recurrent_op)
 if(WITH_GPU)
-  nv_test(nccl_op_test SRCS nccl_op_test.cu DEPS nccl_op gpu_info device_context)
+  cc_test(nccl_op_test SRCS nccl_op_test.cu.cc DEPS nccl_op gpu_info device_context)
 endif()
 cc_test(save_load_op_test SRCS save_load_op_test.cc DEPS save_op load_op)

paddle/operators/accuracy_op.cu

@@ -16,6 +16,7 @@ limitations under the License. */
 #include <thrust/reduce.h>
 #include "paddle/operators/accuracy_op.h"
 #include "paddle/platform/cuda_helper.h"
+#include "paddle/platform/gpu_info.h"
 
 namespace paddle {
 namespace operators {
@@ -73,26 +74,28 @@ class AccuracyOpCUDAKernel : public framework::OpKernel<T> {
 
     int num_samples = static_cast<int>(inference->dims()[0]);
     size_t infer_width = inference->dims()[1];
-    PADDLE_ENFORCE(cudaMemset(accuracy_data, 0, sizeof(float)));
-    // cudaMemset((void**)&correct_data, 0, sizeof(float));
+    auto stream = ctx.cuda_device_context().stream();
+    platform::GpuMemsetAsync(accuracy_data, 0, sizeof(float), stream);
 
     if (num_samples == 0) {
       return;
     }
-    cudaMemcpy(total_data, &num_samples, sizeof(int), cudaMemcpyHostToDevice);
+    platform::GpuMemcpyAsync(total_data, &num_samples, sizeof(int),
+                             cudaMemcpyHostToDevice, stream);
 
-    AccuracyCudaKernel<PADDLE_CUDA_NUM_THREADS><<<
-        1, PADDLE_CUDA_NUM_THREADS, 0, ctx.cuda_device_context().stream()>>>(
+    AccuracyCudaKernel<
+        PADDLE_CUDA_NUM_THREADS><<<1, PADDLE_CUDA_NUM_THREADS, 0, stream>>>(
         num_samples, infer_width, indices_data, label_data, correct_data,
         accuracy_data);
 
     int d_num_samples, d_num_correct;
     float d_accuracy;
-    cudaMemcpy(&d_num_correct, correct_data, sizeof(int),
-               cudaMemcpyDeviceToHost);
-    cudaMemcpy(&d_num_samples, total_data, sizeof(int), cudaMemcpyDeviceToHost);
-    cudaMemcpy(&d_accuracy, accuracy_data, sizeof(float),
-               cudaMemcpyDeviceToHost);
+    platform::GpuMemcpyAsync(&d_num_correct, correct_data, sizeof(int),
+                             cudaMemcpyDeviceToHost, stream);
+    platform::GpuMemcpyAsync(&d_num_samples, total_data, sizeof(int),
+                             cudaMemcpyDeviceToHost, stream);
+    platform::GpuMemcpyAsync(&d_accuracy, accuracy_data, sizeof(float),
+                             cudaMemcpyDeviceToHost, stream);
   }
 };
 

paddle/operators/adagrad_op.cc

@@ -14,6 +14,11 @@ limitations under the License. */
 
 #include "paddle/operators/adagrad_op.h"
 
+#include <cmath>
+
+#include "paddle/operators/math/math_function.h"
+#include "paddle/operators/math/selected_rows_functor.h"
+
 namespace paddle {
 namespace operators {
 
@@ -21,7 +26,7 @@ class AdagradOp : public framework::OperatorWithKernel {
  public:
   using framework::OperatorWithKernel::OperatorWithKernel;
 
-  void InferShape(framework::InferShapeContext *ctx) const override {
+  void InferShape(framework::InferShapeContext* ctx) const override {
     PADDLE_ENFORCE(ctx->HasInput("Param"),
                    "Input(Param) of AdagradOp should not be null.");
     PADDLE_ENFORCE(ctx->HasInput("Grad"),
@@ -54,8 +59,8 @@ class AdagradOp : public framework::OperatorWithKernel {
 
 class AdagradOpMaker : public framework::OpProtoAndCheckerMaker {
  public:
-  AdagradOpMaker(framework::OpProto *proto,
-                 framework::OpAttrChecker *op_checker)
+  AdagradOpMaker(framework::OpProto* proto,
+                 framework::OpAttrChecker* op_checker)
       : OpProtoAndCheckerMaker(proto, op_checker) {
     AddInput("Param", "(Tensor) Input parameter");
     AddInput("Grad", "(Tensor) Input gradient");
@@ -87,10 +92,85 @@ for numerical stability to avoid the division by zero error.
 )DOC");
   }
 };
+
+namespace {
+size_t FindPos(const std::vector<int64_t>& rows, int64_t value) {
+  return std::find(rows.begin(), rows.end(), value) - rows.begin();
+}
+}  // namespace
+
+template <typename T>
+struct SparseAdagradFunctor<platform::CPUPlace, T> {
+  void operator()(const platform::DeviceContext& context,
+                  const framework::SelectedRows& grad,
+                  const framework::Tensor& learning_rate, T epsilon,
+                  framework::Tensor* moment, framework::Tensor* param) {
+    // 1. g_m.rows = set(g.rows)
+    auto grad_rows = grad.rows();
+    std::set<int64_t> row_set(grad_rows.begin(), grad_rows.end());
+    std::vector<int64_t> merge_rows(row_set.begin(), row_set.end());
+
+    auto grad_width = grad.value().dims()[1];
+    std::unique_ptr<framework::SelectedRows> grad_merge{
+        new framework::SelectedRows()};
+    grad_merge->set_rows(merge_rows);
+    grad_merge->set_height(grad.height());
+    grad_merge->mutable_value()->mutable_data<T>(
+        framework::make_ddim(
+            {static_cast<int64_t>(merge_rows.size()), grad_width}),
+        context.GetPlace());
+
+    math::SetConstant<platform::CPUPlace, T> constant_functor;
+    constant_functor(context, grad_merge->mutable_value(), 0.0);
+
+    auto* grad_merge_data = grad_merge->mutable_value()->data<T>();
+    auto* grad_data = grad.value().data<T>();
+
+    for (size_t i = 0; i < grad_rows.size(); i++) {
+      size_t grad_merge_i = FindPos(merge_rows, grad_rows[i]);
+      for (int64_t j = 0; j < grad_width; j++) {
+        grad_merge_data[grad_merge_i * grad_width + j] +=
+            grad_data[i * grad_width + j];
+      }
+    }
+
+    // 2. m += g_m * g_m
+    std::unique_ptr<framework::SelectedRows> grad_square{
+        new framework::SelectedRows()};
+    grad_square->set_rows(grad_merge->rows());
+    grad_square->set_height(grad_merge->height());
+    grad_square->mutable_value()->mutable_data<T>(grad_merge->value().dims(),
+                                                  context.GetPlace());
+    auto gs =
+        framework::EigenVector<T>::Flatten(*(grad_square->mutable_value()));
+    auto gm = framework::EigenVector<T>::Flatten(grad_merge->value());
+    gs.device(*context.GetEigenDevice<platform::CPUPlace>()) = gm * gm;
+
+    math::SelectedRowsAddToTensor<platform::CPUPlace, T> functor;
+    functor(context, *grad_square, moment);
+
+    // 3. update parameter
+    auto* lr = learning_rate.data<T>();
+    auto* param_data = param->data<T>();
+    auto* moment_data = moment->data<T>();
+
+    for (size_t i = 0; i < merge_rows.size(); i++) {
+      for (int64_t j = 0; j < grad_width; j++) {
+        param_data[merge_rows[i] * grad_width + j] -=
+            lr[0] * grad_merge_data[i * grad_width + j] /
+            (std::sqrt(moment_data[merge_rows[i] * grad_width + j]) + epsilon);
+      }
+    }
+  }
+};
+
+template struct SparseAdagradFunctor<platform::CPUPlace, float>;
+template struct SparseAdagradFunctor<platform::CPUPlace, double>;
 }  // namespace operators
 }  // namespace paddle
 
 namespace ops = paddle::operators;
 REGISTER_OP_WITHOUT_GRADIENT(adagrad, ops::AdagradOp, ops::AdagradOpMaker);
-REGISTER_OP_CPU_KERNEL(adagrad,
-                       ops::AdagradOpKernel<paddle::platform::CPUPlace, float>);
+REGISTER_OP_CPU_KERNEL(
+    adagrad, ops::AdagradOpKernel<paddle::platform::CPUPlace, float>,
+    ops::AdagradOpKernel<paddle::platform::CPUPlace, double>);

paddle/operators/adagrad_op.cu

@@ -14,7 +14,138 @@
 
 #define EIGEN_USE_GPU
 #include "paddle/operators/adagrad_op.h"
+#include "paddle/operators/math/selected_rows_functor.h"
+#include "paddle/operators/math/math_function.h"
+#include "paddle/platform/cuda_helper.h"
+
+namespace paddle {
+namespace operators {
+
+namespace {
+
+template <typename T, int block_size>
+__global__ void MergeGradKernel(const T* grad, const int64_t* grad_rows,
+                                T* grad_merge, const int64_t* grad_merge_rows,
+                                size_t grad_merge_rows_size,
+                                int64_t row_numel) {
+  const int ty = blockIdx.y;
+  int tid = threadIdx.x;
+  __shared__ size_t grad_merge_idx;
+
+  if (tid == 0) {
+    for (size_t i = 0; i < grad_merge_rows_size; i++) {
+      if (grad_rows[ty] == grad_merge_rows[i]) {
+        grad_merge_idx = i;
+      }
+    }
+  }
+
+  __syncthreads();
+
+  grad += ty * row_numel;
+  grad_merge += grad_merge_idx * row_numel;
+  for (int index = tid; index < row_numel; index += block_size) {
+    paddle::platform::CudaAtomicAdd(grad_merge + index, grad[index]);
+  }
+}
+
+template <typename T, int block_size>
+__global__ void SparseAdagradFunctorKernel(const T* grad, const int64_t* rows,
+                                           const T* learning_rate, T* param,
+                                           T* moment, int64_t row_numel,
+                                           T epsilon) {
+  const int ty = blockIdx.y;
+  int tid = threadIdx.x;
+
+  grad += ty * row_numel;
+  param += rows[ty] * row_numel;
+  moment += rows[ty] * row_numel;
+
+  for (int index = tid; index < row_numel; index += block_size) {
+    // Since index in rows of SelectedRows can be duplicate, we have to use
+    // Atomic Operation to avoid concurrent write error.
+    paddle::platform::CudaAtomicAdd(param + index,
+                                    -1.0 * learning_rate[0] * grad[index] /
+                                        (sqrt(moment[index]) + epsilon));
+  }
+}
+}  // namespace
+
+template <typename T>
+struct SparseAdagradFunctor<platform::GPUPlace, T> {
+  void operator()(const platform::DeviceContext& context,
+                  const framework::SelectedRows& grad,
+                  const framework::Tensor& learning_rate, T epsilon,
+                  framework::Tensor* moment, framework::Tensor* param) {
+    // 1. g_m.rows = set(g.rows)
+    auto grad_rows = grad.rows();
+    std::set<int64_t> row_set(grad_rows.begin(), grad_rows.end());
+    std::vector<int64_t> merge_rows(row_set.begin(), row_set.end());
+
+    auto grad_width = grad.value().dims()[1];
+    std::unique_ptr<framework::SelectedRows> grad_merge{
+        new framework::SelectedRows()};
+    grad_merge->set_rows(merge_rows);
+    grad_merge->set_height(grad.height());
+    grad_merge->mutable_value()->mutable_data<T>(
+        framework::make_ddim(
+            {static_cast<int64_t>(merge_rows.size()), grad_width}),
+        context.GetPlace());
+
+    math::SetConstant<platform::GPUPlace, T> constant_functor;
+    constant_functor(context, grad_merge->mutable_value(), 0.0);
+
+    auto* grad_merge_data = grad_merge->mutable_value()->data<T>();
+    auto* grad_data = grad.value().data<T>();
+
+    const int block_size = 256;
+    dim3 threads(block_size, 1);
+    dim3 grid1(1, grad_rows.size());
+
+    MergeGradKernel<
+        T, 256><<<grid1, threads, 0,
+                  reinterpret_cast<const platform::CUDADeviceContext&>(context)
+                      .stream()>>>(grad_data, grad.rows().data(),
+                                   grad_merge_data, grad_merge->rows().data(),
+                                   grad_merge->rows().size(), grad_width);
+
+    // 2. m += g_m * g_m
+    std::unique_ptr<framework::SelectedRows> grad_square{
+        new framework::SelectedRows()};
+    grad_square->set_rows(grad_merge->rows());
+    grad_square->set_height(grad_merge->height());
+    grad_square->mutable_value()->mutable_data<T>(grad_merge->value().dims(),
+                                                  context.GetPlace());
+    auto gs =
+        framework::EigenVector<T>::Flatten(*(grad_square->mutable_value()));
+    auto gm = framework::EigenVector<T>::Flatten(grad_merge->value());
+    gs.device(*context.GetEigenDevice<platform::GPUPlace>()) = gm * gm;
+
+    math::SelectedRowsAddToTensor<platform::GPUPlace, T> functor;
+    functor(context, *grad_square, moment);
+
+    // 3. update parameter
+    auto* lr = learning_rate.data<T>();
+    auto* param_data = param->data<T>();
+    auto* moment_data = moment->data<T>();
+
+    dim3 grid2(1, merge_rows.size());
+    SparseAdagradFunctorKernel<
+        T, 256><<<grid2, threads, 0,
+                  reinterpret_cast<const platform::CUDADeviceContext&>(context)
+                      .stream()>>>(grad_merge_data, grad_merge->rows().data(),
+                                   lr, param_data,
+                                   moment_data, grad_width, epsilon);
+  }
+};
+
+template struct SparseAdagradFunctor<platform::GPUPlace, float>;
+template struct SparseAdagradFunctor<platform::GPUPlace, double>;
+
+}  // namespace operators
+}  // namespace paddle
 
 namespace ops = paddle::operators;
-REGISTER_OP_GPU_KERNEL(adagrad,
-                       ops::AdagradOpKernel<paddle::platform::GPUPlace, float>);
+REGISTER_OP_GPU_KERNEL(
+    adagrad, ops::AdagradOpKernel<paddle::platform::GPUPlace, float>,
+    ops::AdagradOpKernel<paddle::platform::GPUPlace, double>);

paddle/operators/adagrad_op.h

@@ -19,18 +19,28 @@ limitations under the License. */
 namespace paddle {
 namespace operators {
 
+template <typename Place, typename T>
+struct SparseAdagradFunctor {
+  void operator()(const platform::DeviceContext& context,
+                  const framework::SelectedRows& grad,
+                  const framework::Tensor& learning_rate, T epsilon,
+                  framework::Tensor* moment, framework::Tensor* param);
+};
+
 template <typename Place, typename T>
 class AdagradOpKernel : public framework::OpKernel<T> {
  public:
   void Compute(const framework::ExecutionContext& ctx) const override {
-    auto param_out_tensor = ctx.Output<framework::Tensor>("ParamOut");
-    auto moment_out_tensor = ctx.Output<framework::Tensor>("MomentOut");
+    auto* param_out_tensor = ctx.Output<framework::Tensor>("ParamOut");
+    auto* moment_out_tensor = ctx.Output<framework::Tensor>("MomentOut");
 
     param_out_tensor->mutable_data<T>(ctx.GetPlace());
     moment_out_tensor->mutable_data<T>(ctx.GetPlace());
 
-    float epsilon = ctx.Attr<float>("epsilon");
+    T epsilon = static_cast<T>(ctx.Attr<float>("epsilon"));
 
+    auto* grad_var = ctx.InputVar("Grad");
+    if (grad_var->IsType<framework::LoDTensor>()) {
       auto param = framework::EigenVector<T>::Flatten(
           *ctx.Input<framework::Tensor>("Param"));
       auto grad = framework::EigenVector<T>::Flatten(
@@ -48,6 +58,20 @@ class AdagradOpKernel : public framework::OpKernel<T> {
       Eigen::DSizes<int, 1> m_dsize(moment_out_tensor->numel());
       param_out.device(place) =
           param - lr.broadcast(m_dsize) * grad / (moment_out.sqrt() + epsilon);
+    } else if (grad_var->IsType<framework::SelectedRows>()) {
+      auto* param_tensor = ctx.Input<framework::Tensor>("Param");
+      PADDLE_ENFORCE_EQ(param_tensor, param_out_tensor);
+
+      auto* moment_tensor = ctx.Input<framework::Tensor>("Moment");
+      PADDLE_ENFORCE_EQ(moment_tensor, moment_out_tensor);
+
+      SparseAdagradFunctor<Place, T> functor;
+      functor(ctx.device_context(), *ctx.Input<framework::SelectedRows>("Grad"),
+              *ctx.Input<framework::Tensor>("LearningRate"), epsilon,
+              moment_out_tensor, param_out_tensor);
+    } else {
+      PADDLE_THROW("Unsupported Variable Type of Grad");
+    }
   }
 };
 

paddle/operators/beam_search_op.cc

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License. */
+
+#include "paddle/operators/beam_search_op.h"
+
+#include <map>
+#include "paddle/framework/lod_tensor.h"
+#include "paddle/framework/op_registry.h"
+
+namespace paddle {
+namespace operators {
+
+void BeamSearch::operator()(const framework::LoDTensor &pre_ids,
+                            framework::LoDTensor *selected_ids,
+                            framework::LoDTensor *selected_scores) {
+  auto items = SelectTopBeamSizeItems();
+  auto selected_items = ToMap(items);
+  PruneEndidCandidates(pre_ids, &selected_items);
+  // calculate the output tensor's height
+  size_t num_instances = std::accumulate(
+      std::begin(items), std::end(items), 0,
+      [](size_t a, std::vector<Item> &b) { return a + b.size(); });
+  // the output tensor shape should be [num_instances, 1]
+  auto dims = framework::make_ddim(
+      std::vector<int64_t>({static_cast<int>(num_instances), 1}));
+  selected_ids->Resize(dims);
+  selected_scores->Resize(dims);
+
+  std::map<size_t /*offset*/, std::vector<Item>> hash;
+  framework::LoD new_lod;
+  auto *ids_data = selected_ids->mutable_data<int>(platform::CPUPlace());
+  auto *scores_data =
+      selected_scores->mutable_data<float>(platform::CPUPlace());
+
+  // fill in data
+  std::vector<size_t> low_level;
+  size_t low_offset = 0;
+  for (auto &items : selected_items) {
+    low_level.push_back(low_offset);
+    for (auto &item : items) {
+      ids_data[low_offset] = item.id;
+      scores_data[low_offset] = item.score;
+      low_offset++;
+    }
+  }
+  // fill lod
+  auto abs_lod = framework::ToAbsOffset(ids_->lod());
+  auto &high_level = abs_lod[lod_level_];
+  framework::LoD lod(2);
+  lod[0].assign(high_level.begin(), high_level.end());
+  lod[1].assign(low_level.begin(), low_level.end());
+  selected_ids->set_lod(lod);
+  selected_scores->set_lod(lod);
+}
+
+void BeamSearch::PruneEndidCandidates(const framework::LoDTensor &pre_ids,
+                                      std::vector<std::vector<Item>> *items) {
+  auto *pre_ids_data = pre_ids.data<int>();
+
+  for (size_t offset = 0; offset < items->size(); offset++) {
+    auto prefix_id = pre_ids_data[offset];
+    if (prefix_id == end_id_) {
+      items->at(offset).clear();
+    }
+  }
+}
+
+std::vector<std::vector<BeamSearch::Item>> BeamSearch::ToMap(
+    const std::vector<std::vector<Item>> &items) {
+  std::vector<std::vector<Item>> result;
+  for (auto &entries : items) {
+    for (const auto &item : entries) {
+      if (item.offset >= result.size()) {
+        result.resize(item.offset + 1);
+      }
+      result[item.offset].push_back(item);
+    }
+  }
+  return result;
+}
+
+std::vector<std::vector<BeamSearch::Item>>
+BeamSearch::SelectTopBeamSizeItems() {
+  std::vector<std::vector<Item>> result;
+  std::vector<Item> items;
+  // for each source sentence, select the top beam_size items across all
+  // candidate sets.
+  while (NextItemSet(&items)) {
+    std::nth_element(std::begin(items), std::begin(items) + beam_size_,
+                     std::end(items), [](const Item &a, const Item &b) {
+                       // TODO(superjom) make score's comparation customizable.
+                       // partial sort in descending order
+                       return a.score > b.score;
+                     });
+    // prune the top beam_size items.
+    if (items.size() > beam_size_) {
+      items.resize(beam_size_);
+    }
+    result.emplace_back(items);
+  }
+  return result;
+}
+
+// the candidates of a source
+bool BeamSearch::NextItemSet(std::vector<BeamSearch::Item> *items) {
+  if (sent_offset_ >= ids_->NumElements(lod_level_)) {
+    return false;
+  }
+  // find the current candidates
+  auto ids = *ids_;
+  auto scores = *scores_;
+
+  auto source_abs_two_level_lod = framework::SliceInLevel(
+      ids.lod(), lod_level_, sent_offset_, sent_offset_ + 1);
+  source_abs_two_level_lod = framework::ToAbsOffset(source_abs_two_level_lod);
+  auto abs_lod = framework::ToAbsOffset(ids.lod());
+  PADDLE_ENFORCE_GE(source_abs_two_level_lod.size(), 2UL);
+
+  auto *ids_data = ids.data<int>();
+  auto *scores_data = scores.data<float>();
+
+  size_t instance_dim = 1;
+  for (int i = 1; i < ids.dims().size(); i++) {
+    instance_dim *= ids.dims()[i];
+  }
+
+  items->clear();
+  items->reserve(framework::product(ids.dims()));
+  for (size_t offset = abs_lod[lod_level_][sent_offset_];
+       offset < abs_lod[lod_level_][sent_offset_ + 1]; offset++) {
+    for (int d = 0; d < instance_dim; d++) {
+      const size_t dim_offset = offset * instance_dim + d;
+      items->emplace_back(offset, ids_data[dim_offset],
+                          scores_data[dim_offset]);
+    }
+  }
+
+  sent_offset_++;
+  return true;
+}
+
+class BeamSearchProtoAndCheckerMaker
+    : public framework::OpProtoAndCheckerMaker {
+ public:
+  BeamSearchProtoAndCheckerMaker(framework::OpProto *proto,
+                                 framework::OpAttrChecker *op_checker)
+      : OpProtoAndCheckerMaker(proto, op_checker) {
+    // inputs and outputs stored in proto
+    AddInput("pre_ids", "ids in previous step");
+    AddInput("ids", "a LoDTensor of shape of [None,k]");
+    AddInput("scores",
+             "a LoDTensor that has the same shape and LoD with `ids`");
+    AddOutput("selected_ids",
+              "a LoDTensor that stores the IDs selected by beam search");
+    AddOutput(
+        "selected_scores",
+        "a LoDTensor that has the same shape and LoD with `selected_ids`");
+
+    // Attributes stored in AttributeMap
+    AddAttr<int>("level", "the level of LoDTensor");
+    AddAttr<int>("beam_size", "beam size for beam search");
+    AddAttr<int>("end_id",
+                 "the token id which indicates the end of a sequence");
+
+    AddComment(
+        "This is a beam search operator that help to generate sequences.");
+  }
+};
+
+}  // namespace operators
+}  // namespace paddle
+
+REGISTER_OP_WITHOUT_GRADIENT(beam_search, paddle::operators::BeamSearchOp,
+                             paddle::operators::BeamSearchProtoAndCheckerMaker);

paddle/operators/beam_search_op.h

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+#pragma once
+
+#ifdef PADDLE_WITH_TESTING
+#include "gtest/gtest.h"
+#endif
+
+#include "paddle/framework/lod_tensor.h"
+#include "paddle/framework/operator.h"
+
+namespace paddle {
+namespace operators {
+
+/*
+ * This is an implementation of beam search.
+ *
+ * To explain the details, lets take machine translation task for example, in
+ * this task, one source sentence is translated to multiple target sentences,
+ * during this period, one sentence will be translated to multiple translation
+ * prefixes(target sentence that have not ended), in each time step a prefix
+ * will have some candidates, input the candidate ids and their corresponding
+ * scores (probabilities), it will sort and select the top beam_size candidates
+ * for each source sentence, and store the selected candidates's score and their
+ * corresponding ids to LoDTensors.
+ *
+ * A detailed example:
+ *
+ * Input
+ *
+ * ids:
+ * LoD (should have 2 levels)
+ * first level: [0, 1, 4]
+ * second level: [0, 1, 2, 3, 4]
+ *
+ * tensor's data
+ * [
+ * [4, 2, 5]
+ * [2, 1, 3]
+ * [3, 5, 2]
+ * [8, 2, 1]
+ * ]
+ *
+ * scores:
+ * LoD same as `ids`
+ * tensor's data
+ * [
+ * [0.5, 0.3, 0.2]
+ * [0.6, 0.3, 0.1]
+ * [0.9, 0.5, 0.1]
+ * [0.7, 0.5, 0.1]
+ * ]
+ *
+ * the inputs means that there are 2 source sentences to translate, and the
+ * first source has 1 prefix, the second source has 2 prefix.
+ *
+ * lets assume beam size is 2, and the beam search's output should be
+ * LoD
+ * first level:
+ * [0, 1, 2]
+ * second level:
+ * [0, 2, 4]
+ *
+ * tensor's data
+ * [[
+ * 0.5,
+ * 0.3,
+ * 0.9,
+ * 0.7
+ * ]]
+ *
+ * TODO all the prune operations should be in the beam search, so it is better
+ * to split the beam search algorithm into a sequence of smaller operators, and
+ * the prune operators can be inserted in this sequence.
+ */
+class BeamSearch {
+ public:
+  // TODO(superjom) make type customizable
+  using id_t = size_t;
+  using score_t = float;
+  /*
+   * Input the arguments that needed by this class.
+   */
+  BeamSearch(const framework::LoDTensor& ids,
+             const framework::LoDTensor& scores, size_t level, size_t beam_size,
+             int end_id)
+      : beam_size_(beam_size),
+        ids_(&ids),
+        scores_(&scores),
+        lod_level_(level),
+        end_id_(end_id) {}
+
+  /*
+   * The main function of beam search.
+   *
+   * @selected_ids: a [None, 1]-shaped tensor with LoD.
+   *   In a machine translation model, it might be the candidate term id sets,
+   *   each set stored as a varience-length sequence.
+   *   The format might be described with a two-level LoD
+   *   - [[0 1]
+   *   -  [0 1 2]]
+   *   - [[]
+   *   -  [0 1]]
+   *   the first level of LoD tells that there are two source sentences. The
+   *   second level describes the details of the candidate id set's offsets in
+   * the
+   *   source sentences.
+   *
+   *  @selected_scores: a LoD tensor with the same shape and LoD with
+   * selected_ids.
+   *   It stores the corresponding scores of candidate ids in selected_ids.
+   *
+   * Return false if all the input tensor is empty, in machine translation task
+   * that means no candidates is provided, and the task will stop running.
+   */
+  void operator()(const framework::LoDTensor& pre_ids,
+                  framework::LoDTensor* selected_ids,
+                  framework::LoDTensor* selected_scores);
+
+ protected:
+  /*
+   * The basic items help to sort.
+   */
+  struct Item {
+    Item() {}
+    Item(size_t offset, size_t id, float score)
+        : offset(offset), id(id), score(score) {}
+    // offset in the lod_level_+1
+    size_t offset;
+    // the candidate id
+    id_t id;
+    // the corresponding score
+    score_t score;
+  };
+
+  void PruneEndidCandidates(const framework::LoDTensor& pre_ids,
+                            std::vector<std::vector<Item>>* items);
+
+  /*
+   * Transform the items into a map whose key is offset, value is the items.
+   * NOTE low performance
+   */
+  std::vector<std::vector<Item>> ToMap(
+      const std::vector<std::vector<Item>>& inputs);
+
+  /*
+   * For each source, select top beam_size records.
+   */
+  std::vector<std::vector<Item>> SelectTopBeamSizeItems();
+
+  /*
+   * Get the items of next source sequence, return false if no remaining items.
+   */
+  bool NextItemSet(std::vector<Item>* items);
+
+ private:
+  size_t beam_size_;
+  const framework::LoDTensor* ids_;
+  const framework::LoDTensor* scores_;
+  size_t lod_level_{0};
+  size_t sent_offset_{0};
+  int end_id_{0};
+};
+
+class BeamSearchOp : public framework::OperatorBase {
+ public:
+  BeamSearchOp(const std::string& type,
+               const framework::VariableNameMap& inputs,
+               const framework::VariableNameMap& outputs,
+               const framework::AttributeMap& attrs)
+      : OperatorBase(type, inputs, outputs, attrs) {}
+
+  BeamSearchOp(const BeamSearchOp& o)
+      : framework::OperatorBase(
+            static_cast<const framework::OperatorBase&>(o)) {
+    PADDLE_THROW("Not Implemented");
+  }
+
+  void Run(const framework::Scope& scope,
+           const platform::DeviceContext& dev_ctx) const override {
+    LOG(INFO) << "run beam search op";
+    auto ids_var = scope.FindVar(Input("ids"));
+    auto scores_var = scope.FindVar(Input("scores"));
+    auto pre_ids_var = scope.FindVar(Input("pre_ids"));
+    PADDLE_ENFORCE_NOT_NULL(ids_var);
+    PADDLE_ENFORCE_NOT_NULL(scores_var);
+    PADDLE_ENFORCE_NOT_NULL(pre_ids_var);
+
+    auto& ids = ids_var->Get<framework::LoDTensor>();
+    auto& scores = scores_var->Get<framework::LoDTensor>();
+    auto& pre_ids = pre_ids_var->Get<framework::LoDTensor>();
+    size_t level = Attr<int>("level");
+    size_t beam_size = Attr<int>("beam_size");
+    int end_id = Attr<int>("end_id");
+    LOG(INFO) << "init beam search";
+    BeamSearch alg(ids, scores, level, beam_size, end_id);
+
+    LOG(INFO) << "after beam search";
+    auto selected_ids_var = scope.FindVar(Output("selected_ids"));
+    auto selected_scores_var = scope.FindVar(Output("selected_scores"));
+    PADDLE_ENFORCE_NOT_NULL(selected_ids_var);
+    PADDLE_ENFORCE_NOT_NULL(selected_scores_var);
+    auto& selected_ids_tensor =
+        *selected_ids_var->GetMutable<framework::LoDTensor>();
+    auto& selected_scores_tensor =
+        *selected_scores_var->GetMutable<framework::LoDTensor>();
+    LOG(INFO) << "run beam search";
+    alg(pre_ids, &selected_ids_tensor, &selected_scores_tensor);
+    LOG(INFO) << "finish beam search";
+  }
+};
+
+}  // namespace operators
+}  // namespace paddle

paddle/operators/conv2d_transpose_cudnn_op.cu → paddle/operators/conv2d_transpose_cudnn_op.cu.cc

@@ -200,9 +200,7 @@ class CudnnConvTransposeGradOpKernel : public framework::OpKernel<T> {
     T alpha = 1.0f, beta = 0.0f;
     if (input_grad) {
       T* input_grad_data = input_grad->mutable_data<T>(ctx.GetPlace());
-      auto t = framework::EigenVector<T>::Flatten(*input_grad);
-      t.device(ctx.GetEigenDevice<platform::GPUPlace>()) =
-          t.constant(static_cast<T>(0));
+      math::set_constant(ctx.device_context(), input_grad, 0);
 
       PADDLE_ENFORCE(platform::dynload::cudnnConvolutionForward(
           handle, &alpha, cudnn_output_desc, output_grad_data,
@@ -214,9 +212,8 @@ class CudnnConvTransposeGradOpKernel : public framework::OpKernel<T> {
     // ------------------- cudnn conv backward filter ---------------------
     if (filter_grad) {
       T* filter_grad_data = filter_grad->mutable_data<T>(ctx.GetPlace());
-      auto t = framework::EigenVector<T>::Flatten(*filter_grad);
-      t.device(ctx.GetEigenDevice<platform::GPUPlace>()) =
-          t.constant(static_cast<T>(0));
+      math::set_constant(ctx.device_context(), filter_grad, 0);
+
       // Gradient with respect to the filter
       PADDLE_ENFORCE(platform::dynload::cudnnConvolutionBackwardFilter(
           handle, &alpha, cudnn_output_desc, output_grad_data, cudnn_input_desc,

paddle/operators/conv_cudnn_op.cc

@@ -22,8 +22,6 @@ class CudnnConvOpMaker : public Conv2DOpMaker {
   CudnnConvOpMaker(framework::OpProto* proto,
                    framework::OpAttrChecker* op_checker)
       : Conv2DOpMaker(proto, op_checker) {
-    AddAttr<std::vector<int>>("dilations", "dilations of convolution operator.")
-        .SetDefault(std::vector<int>{1, 1});
     AddAttr<int>("workspace_size_MB",
                  "workspace size for cudnn, in MB, "
                  "workspace is a section of GPU memory which will be "

paddle/operators/conv_op.cc

@@ -30,6 +30,7 @@ void ConvOp::InferShape(framework::InferShapeContext* ctx) const {
   std::vector<int> strides = ctx->Attrs().Get<std::vector<int>>("strides");
   std::vector<int> paddings = ctx->Attrs().Get<std::vector<int>>("paddings");
   int groups = ctx->Attrs().Get<int>("groups");
+  std::vector<int> dilations = ctx->Attrs().Get<std::vector<int>>("dilations");
   int input_channels = in_dims[1];
   int output_channels = filter_dims[0];
 
@@ -52,9 +53,15 @@ void ConvOp::InferShape(framework::InferShapeContext* ctx) const {
       "The number of output channels should be divided by groups.");
 
   std::vector<int64_t> output_shape({in_dims[0], filter_dims[0]});
-  for (size_t i = 0; i < paddings.size(); ++i) {
+  for (size_t i = 0; i < strides.size(); ++i) {
+    PADDLE_ENFORCE(in_dims[i + 2] + 2 * paddings[i] -
+                           (dilations[i] * (filter_dims[i + 2] - 1) + 1) >
+                       0,
+                   "Due to the settings of paddings, filter_dims and "
+                   "dilations, the output size is less than 0, please check "
+                   "again.");
     output_shape.push_back(OutputSize(in_dims[i + 2], filter_dims[i + 2],
-                                      paddings[i], strides[i]));
+                                      dilations[i], paddings[i], strides[i]));
   }
   ctx->SetOutputDim("Output", framework::make_ddim(output_shape));
 }
@@ -78,9 +85,15 @@ Conv2DOpMaker::Conv2DOpMaker(framework::OpProto* proto,
   AddOutput("Output",
             "(Tensor) The output tensor of convolution operator. "
             "The format of output tensor is also NCHW.");
-  AddAttr<std::vector<int>>("strides", "strides of convolution operator.")
+  AddAttr<std::vector<int>>("strides",
+                            "(vector<int> default:{1, 1}), the "
+                            "strides(h_stride, w_stride) of "
+                            "convolution operator.")
       .SetDefault({1, 1});
-  AddAttr<std::vector<int>>("paddings", "paddings of convolution operator.")
+  AddAttr<std::vector<int>>("paddings",
+                            "(vector<int> default:{0, 0}), the "
+                            "paddings(h_pad, w_pad) of "
+                            "convolution operator.")
       .SetDefault({0, 0});
   AddAttr<int>(
       "groups",
@@ -90,15 +103,20 @@ Conv2DOpMaker::Conv2DOpMaker(framework::OpProto* proto,
       "first half of the input channels, while the second half of the filters "
       "is only connected to the second half of the input channels.")
       .SetDefault(1);
+  AddAttr<std::vector<int>>("dilations",
+                            "(vector<int> default:{1, 1}), the "
+                            "dilations(h_dilation, w_dilation) of "
+                            "convolution operator.")
+      .SetDefault({1, 1});
   AddComment(R"DOC(
 Convolution Operator.
 
 The convolution operation calculates the output based on the input, filter
-and strides, paddings, groups parameters. The size of each dimension of the
+and strides, paddings, groups, dilations parameters. The size of each dimension of the
 parameters is checked in the infer-shape.
 Input(Input, Filter) and output(Output) are in NCHW format. Where N is batch
 size, C is the number of channels, H is the height of the feature, and W is
-the width of the feature. Parameters(ksize, strides, paddings) are two elements.
+the width of the feature. Parameters(ksize, strides, paddings, dilations) are two elements.
 These two elements represent height and width, respectively.
 The input(X) size and output(Out) size may be different.
 
@@ -109,8 +127,8 @@ Example:
   Output:
        Output shape: (N, C_out, H_out, W_out)
   where
-       H_out = (H_in - filter_size[0] + 2 * paddings[0]) / strides[0] + 1;
-       W_out = (W_in - filter_size[1] + 2 * paddings[1]) / strides[1] + 1;
+       H_out = (H_in + 2 * paddings[0] - (dilations[0]*(filter_size[0] - 1) + 1)) / strides[0] + 1;
+       W_out = (W_in + 2 * paddings[1] - (dilations[1]*(filter_size[1] - 1) + 1)) / strides[1] + 1;
 )DOC");
 }
 
@@ -135,13 +153,15 @@ Conv3DOpMaker::Conv3DOpMaker(framework::OpProto* proto,
   AddOutput("Output",
             "(Tensor) The output tensor of convolution operator."
             "The format of output tensor is also NCDHW.");
-  AddAttr<std::vector<int>>(
-      "strides",
-      "(vector, default:{0, 0, 0}), the strides of convolution operator.")
+  AddAttr<std::vector<int>>("strides",
+                            "(vector<int>, default:{1, 1, 1}), the "
+                            "strides(d_stride, h_stride, w_stride) of "
+                            "convolution operator.")
       .SetDefault({1, 1, 1});
-  AddAttr<std::vector<int>>(
-      "paddings",
-      "(vector, default:{0, 0, 0}), the paddings of convolution operator.")
+  AddAttr<std::vector<int>>("paddings",
+                            "(vector<int>, default:{0, 0, 0}), the "
+                            "paddings(d_pad, h_pad, w_pad) of convolution "
+                            "operator.")
       .SetDefault({0, 0, 0});
   AddAttr<int>(
       "groups",
@@ -151,6 +171,12 @@ Conv3DOpMaker::Conv3DOpMaker(framework::OpProto* proto,
       "first half of the input channels, while the second half of the filters "
       "is only connected to the second half of the input channels.")
       .SetDefault(1);
+  AddAttr<std::vector<int>>("dilations",
+                            "(vector<int> default:{1, 1, 1}), the "
+                            "dilations(d_dilation, h_dilation, w_dilation) of "
+                            "convolution operator. Currently, conv3d doesn't "
+                            "support dilation.")
+      .SetDefault({1, 1, 1});
 
   AddComment(R"DOC(
 Convolution3D Operator.

paddle/operators/conv_op.h

@@ -27,11 +27,24 @@ using Tensor = framework::Tensor;
 
 // Base convolution operator definations for other conv
 // like operators to reuse the implementation.
-inline int OutputSize(int input_size, int filter_size, int padding,
-                      int stride) {
-  int output_size = (input_size - filter_size + 2 * padding) / stride + 1;
+inline int OutputSize(int input_size, int filter_size, int dilation,
+                      int padding, int stride) {
+  const int dkernel = dilation * (filter_size - 1) + 1;
+  const int output_size = (input_size + 2 * padding - dkernel) / stride + 1;
   return output_size;
 }
+inline bool IsExpand(std::vector<int64_t>& filter_dim,
+                     std::vector<int>& strides, std::vector<int>& paddings,
+                     std::vector<int>& dilations) {
+  bool filter_1 = true, strides_1 = true, padding_0 = true, dilation_1 = true;
+  for (size_t j = 0; j < strides.size(); ++j) {
+    filter_1 = filter_1 && (static_cast<int>(filter_dim[j]) == 1);
+    strides_1 = strides_1 && (strides[j] == 1);
+    padding_0 = padding_0 && (paddings[j] == 0);
+    dilation_1 = dilation_1 && (dilations[j] == 1);
+  }
+  return !(filter_1 && strides_1 && padding_0 && dilation_1);
+}
 
 // Define Op classes in .h file so that other conv
 // operator implementations can reuse the code.
@@ -50,14 +63,12 @@ class Conv3DOpMaker : public framework::OpProtoAndCheckerMaker {
 class ConvOp : public framework::OperatorWithKernel {
  public:
   using framework::OperatorWithKernel::OperatorWithKernel;
-
   void InferShape(framework::InferShapeContext* ctx) const override;
 };
 
 class ConvOpGrad : public framework::OperatorWithKernel {
  public:
   using framework::OperatorWithKernel::OperatorWithKernel;
-
   void InferShape(framework::InferShapeContext* ctx) const override;
 };
 
@@ -73,9 +84,10 @@ class GemmConvKernel : public framework::OpKernel<T> {
     Tensor* output = context.Output<Tensor>("Output");
     output->mutable_data<T>(context.GetPlace());
 
+    int groups = context.Attr<int>("groups");
     std::vector<int> strides = context.Attr<std::vector<int>>("strides");
     std::vector<int> paddings = context.Attr<std::vector<int>>("paddings");
-    int groups = context.Attr<int>("groups");
+    std::vector<int> dilations = context.Attr<std::vector<int>>("dilations");
 
     const int batch_size = static_cast<int>(input->dims()[0]);
 
@@ -106,14 +118,17 @@ class GemmConvKernel : public framework::OpKernel<T> {
     framework::DDim col_matrix_shape =
         framework::flatten_to_2d(col_shape, filter_shape_vec.size() + 1);
 
+    bool is_expand = IsExpand(filter_shape_vec, strides, paddings, dilations);
     Tensor col;
-    col.mutable_data<T>(col_shape, context.GetPlace());
     // col_matrix shares the same piece of data with col,
     // but will be reshaped into a two-dimensional matrix shape
     // to call the matrix multiplication interface.
     Tensor col_matrix;
+    if (is_expand) {
+      col.mutable_data<T>(col_shape, context.GetPlace());
       col_matrix.ShareDataWith(col);
       col_matrix.Resize(col_matrix_shape);
+    }
 
     framework::DDim input_shape = framework::slice_ddim(
         input->dims(), 1, static_cast<int>(input->dims().size()));
@@ -130,24 +145,30 @@ class GemmConvKernel : public framework::OpKernel<T> {
     int in_step = static_cast<int>(input->dims()[1]) / groups;
     int out_step = static_cast<int>(output->dims()[1]) / groups;
 
+    math::Vol2ColFunctor<Place, T> vol2col;
+    math::Im2ColFunctor<math::ColFormat::kCFO, Place, T> im2col;
+
     for (int i = 0; i < batch_size; i++) {
       Tensor in_batch = input->Slice(i, i + 1).Resize(input_shape);
       Tensor out_batch = output->Slice(i, i + 1).Resize(output_matrix_shape);
+
       for (int g = 0; g < groups; g++) {
         Tensor in_slice = in_batch.Slice(g * in_step, (g + 1) * in_step);
 
-        if (filter_shape_vec.size() == 2) {
+        if (!is_expand) {
+          col.ShareDataWith(in_slice);
+          col_matrix.ShareDataWith(col);
+          col_matrix.Resize(col_matrix_shape);
+        } else if (filter_shape_vec.size() == 2) {
           // im2col
-          math::Im2ColFunctor<math::ColFormat::kCFO, Place, T> im2col;
-          im2col(context.device_context(), in_slice, col, strides[0],
-                 strides[1], paddings[0], paddings[0], paddings[1],
-                 paddings[1]);
+          im2col(context.device_context(), in_slice, dilations, strides,
+                 std::vector<int>{paddings[0], paddings[1], paddings[0],
+                                  paddings[1]},
+                 &col);
         } else if (filter_shape_vec.size() == 3) {
           // vol2col
-          math::Vol2ColFunctor<Place, T> vol2col;
-          vol2col(context.device_context(), in_slice, col, strides[0],
-                  strides[1], strides[2], paddings[0], paddings[1],
-                  paddings[2]);
+          vol2col(context.device_context(), in_slice, dilations, strides,
+                  paddings, &col);
         }
 
         // gemm
@@ -178,9 +199,10 @@ class GemmConvGradKernel : public framework::OpKernel<T> {
 
     if (!input_grad && !filter_grad) return;
 
+    int groups = context.Attr<int>("groups");
     std::vector<int> strides = context.Attr<std::vector<int>>("strides");
     std::vector<int> paddings = context.Attr<std::vector<int>>("paddings");
-    int groups = context.Attr<int>("groups");
+    std::vector<int> dilations = context.Attr<std::vector<int>>("dilations");
 
     const int batch_size = static_cast<int>(input->dims()[0]);
 
@@ -230,14 +252,17 @@ class GemmConvGradKernel : public framework::OpKernel<T> {
     int in_step = static_cast<int>(input->dims()[1]) / groups;
     int out_step = static_cast<int>(output_grad->dims()[1]) / groups;
 
+    bool is_expand = IsExpand(filter_shape_vec, strides, paddings, dilations);
     Tensor col;
     // col_matrix shares the same piece of data with col,
     // but will be reshaped into a two-dimensional matrix shape
     // to call the matrix multiplication interface.
     Tensor col_matrix;
+    if (is_expand) {
       col.mutable_data<T>(col_shape, context.GetPlace());
       col_matrix.ShareDataWith(col);
       col_matrix.Resize(col_matrix_shape);
+    }
 
     math::SetConstant<Place, T> set_zero;
 
@@ -245,6 +270,9 @@ class GemmConvGradKernel : public framework::OpKernel<T> {
       input_grad->mutable_data<T>(context.GetPlace());
       set_zero(context.device_context(), input_grad, static_cast<T>(0));
 
+      math::Col2VolFunctor<Place, T> col2vol;
+      math::Col2ImFunctor<math::ColFormat::kCFO, Place, T> col2im;
+
       for (int i = 0; i < batch_size; i++) {
         Tensor out_grad_batch =
             output_grad->Slice(i, i + 1).Resize(output_matrix_shape);
@@ -254,24 +282,26 @@ class GemmConvGradKernel : public framework::OpKernel<T> {
           Tensor out_grad_slice =
               out_grad_batch.Slice(g * out_step, (g + 1) * out_step);
           Tensor filter_slice = filter.Slice(g * out_step, (g + 1) * out_step);
-          math::matmul<Place, T>(context.device_context(), filter_slice, true,
-                                 out_grad_slice, false, T(1.0), &col_matrix,
-                                 T(0.0));
-          // col2im
+
           Tensor in_grad_slice =
               in_grad_batch.Slice(g * in_step, (g + 1) * in_step);
 
-          if (filter_shape_vec.size() == 2) {
-            math::Col2ImFunctor<math::ColFormat::kCFO, Place, T> col2im;
-            col2im(context.device_context(), in_grad_slice, col, strides[0],
-                   strides[1], paddings[0], paddings[0], paddings[1],
-                   paddings[1]);
+          if (!is_expand) {
+            col_matrix.ShareDataWith(in_grad_slice);
+            col_matrix.Resize(col_matrix_shape);
+          }
+          math::matmul<Place, T>(context.device_context(), filter_slice, true,
+                                 out_grad_slice, false, T(1.0), &col_matrix,
+                                 T(0.0));
 
-          } else if (filter_shape_vec.size() == 3) {
-            math::Col2VolFunctor<Place, T> col2vol;
-            col2vol(context.device_context(), in_grad_slice, col, strides[0],
-                    strides[1], strides[2], paddings[0], paddings[1],
-                    paddings[2]);
+          if (is_expand && filter_shape_vec.size() == 2) {
+            col2im(context.device_context(), col, dilations, strides,
+                   std::vector<int>{paddings[0], paddings[1], paddings[0],
+                                    paddings[1]},
+                   &in_grad_slice);
+          } else if (is_expand && filter_shape_vec.size() == 3) {
+            col2vol(context.device_context(), col, dilations, strides, paddings,
+                    &in_grad_slice);
           }
         }
       }
@@ -282,7 +312,8 @@ class GemmConvGradKernel : public framework::OpKernel<T> {
       Tensor filter_grad_ = *filter_grad;
       filter_grad_.Resize(filter_matrix_shape);
       set_zero(context.device_context(), filter_grad, static_cast<T>(0));
-
+      math::Im2ColFunctor<math::ColFormat::kCFO, Place, T> im2col;
+      math::Vol2ColFunctor<Place, T> vol2col;
       for (int i = 0; i < batch_size; i++) {
         Tensor out_grad_batch =
             output_grad->Slice(i, i + 1).Resize(output_matrix_shape);
@@ -293,16 +324,18 @@ class GemmConvGradKernel : public framework::OpKernel<T> {
               out_grad_batch.Slice(g * out_step, (g + 1) * out_step);
           Tensor in_slice = in_batch.Slice(g * in_step, (g + 1) * in_step);
 
-          if (filter_shape_vec.size() == 2) {
-            math::Im2ColFunctor<math::ColFormat::kCFO, Place, T> im2col;
-            im2col(context.device_context(), in_slice, col, strides[0],
-                   strides[1], paddings[0], paddings[0], paddings[1],
-                   paddings[1]);
+          if (!is_expand) {
+            col.ShareDataWith(in_slice);
+            col_matrix.ShareDataWith(col);
+            col_matrix.Resize(col_matrix_shape);
+          } else if (filter_shape_vec.size() == 2) {
+            im2col(context.device_context(), in_slice, dilations, strides,
+                   std::vector<int>{paddings[0], paddings[1], paddings[0],
+                                    paddings[1]},
+                   &col);
           } else if (filter_shape_vec.size() == 3) {
-            math::Vol2ColFunctor<Place, T> vol2col;
-            vol2col(context.device_context(), in_slice, col, strides[0],
-                    strides[1], strides[2], paddings[0], paddings[1],
-                    paddings[2]);
+            vol2col(context.device_context(), in_slice, dilations, strides,
+                    paddings, &col);
           }
 
           // gemm

paddle/operators/conv_shift_op.cu

@@ -13,6 +13,7 @@
    limitations under the License. */
 
 #include "paddle/operators/conv_shift_op.h"
+#include "paddle/operators/math/math_function.h"
 #include "paddle/platform/cuda_helper.h"
 
 namespace paddle {
@@ -22,7 +23,7 @@ using framework::Tensor;
 
 namespace {
 
-inline int div_up(int x, int y) { return (x + y - 1) / y; }
+inline int DivUp(int x, int y) { return (x + y - 1) / y; }
 
 // Some notes on the design:
 //
@@ -33,9 +34,9 @@ inline int div_up(int x, int y) { return (x + y - 1) / y; }
 // y is fairly small. For large y, it would probably be more efficient
 // to also tile across y.
 template <typename T>
-__global__ void conv_shift_forward(const T *x, const T *y, T *out, int x_width,
-                                   int y_width, int y_half_width,
-                                   int batch_size) {
+__global__ void ConvShiftForward(const T *x, const T *y, int x_width,
+                                 int y_width, int y_half_width, int batch_size,
+                                 T *out) {
   extern __shared__ T mem[];
 
   int tx = threadIdx.x;
@@ -62,11 +63,10 @@ __global__ void conv_shift_forward(const T *x, const T *y, T *out, int x_width,
   if (tx < num_x) {
     int load_i = (i - y_half_width + x_width) % x_width;
     sx[tx] = x[k * x_width + load_i];
-  } else {
-    return;
   }
   __syncthreads();
 
+  if (tx < num_x) {
     // Compute dot product of sx[tx:tx + y_width] and sy.
     T sum = 0;
     for (int j = 0; j < y_width; ++j) {
@@ -75,12 +75,14 @@ __global__ void conv_shift_forward(const T *x, const T *y, T *out, int x_width,
 
     // Save to out[k, i].
     out[k * x_width + i] = sum;
+  }
 }
 
 // Compute x gradient - initial naive implementation with atomic add.
 template <typename T>
-__global__ void conv_shift_dx(const T *dout, const T *y, T *dx, int x_width,
-                              int y_width, int y_half_width, int batch_size) {
+__global__ void ConvShiftGradX(const T *dout, const T *y, int x_width,
+                               int y_width, int y_half_width, int batch_size,
+                               T *dx) {
   int i = blockIdx.x * blockDim.x + threadIdx.x;  // x index
   int j = blockIdx.y;                             // y index
   int k = blockIdx.z;                             // batch index
@@ -94,8 +96,8 @@ __global__ void conv_shift_dx(const T *dout, const T *y, T *dx, int x_width,
 
 // Compute y gradient - initial naive implementation with atomic add.
 template <typename T>
-__global__ void conv_shift_dy(const T *x, const T *dout, T *dy, int x_width,
-                              int y_width, int y_half_width, int batch_size) {
+__global__ void ConvShiftDy(const T *x, const T *dout, int x_width, int y_width,
+                            int y_half_width, int batch_size, T *dy) {
   int i = blockIdx.x * blockDim.x + threadIdx.x;  // x index
   int j = blockIdx.y;                             // y index
   int k = blockIdx.z;                             // batch index
@@ -125,15 +127,15 @@ class ConvShiftKernel<platform::GPUPlace, T> : public framework::OpKernel<T> {
     int y_half_width = (y_width - 1) / 2;
 
     const int x_per_block = 256;
-    int num_x_blocks = div_up(x_width, x_per_block);
+    int num_x_blocks = DivUp(x_width, x_per_block);
     int mem_per_block = (x_per_block + 2 * y_width) * sizeof(T);
 
     dim3 grid_dim(num_x_blocks, batch_size);
 
     auto stream = context.cuda_device_context().stream();
 
-    conv_shift_forward<T><<<grid_dim, x_per_block, mem_per_block, stream>>>(
-        x_data, y_data, out_data, x_width, y_width, y_half_width, batch_size);
+    ConvShiftForward<T><<<grid_dim, x_per_block, mem_per_block, stream>>>(
+        x_data, y_data, x_width, y_width, y_half_width, batch_size, out_data);
   }
 };
 
@@ -157,25 +159,26 @@ class ConvShiftGradKernel<platform::GPUPlace, T>
     int y_width = Y->dims()[1];
     int y_half_width = (y_width - 1) / 2;
 
-    auto stream = context.cuda_device_context().stream();
+    auto &device_ctx = context.cuda_device_context();
+    math::SetConstant<platform::GPUPlace, T> zero;
 
     const int x_per_block = 256;
-    int num_x_blocks = div_up(x_width, x_per_block);
+    int num_x_blocks = DivUp(x_width, x_per_block);
     dim3 grid_dim(num_x_blocks, y_width, batch_size);
 
     if (dX) {
       T *dx_data = dX->mutable_data<T>(context.GetPlace());
-      cudaMemsetAsync(dx_data, 0, dX->numel() * sizeof(T), stream);
-      conv_shift_dx<T><<<grid_dim, x_per_block, 0, stream>>>(
-          dout_data, y_data, dx_data, x_width, y_width, y_half_width,
-          batch_size);
+      zero(device_ctx, dX, static_cast<T>(0.0));
+      ConvShiftGradX<T><<<grid_dim, x_per_block, 0, device_ctx.stream()>>>(
+          dout_data, y_data, x_width, y_width, y_half_width, batch_size,
+          dx_data);
     }
     if (dY) {
       T *dy_data = dY->mutable_data<T>(context.GetPlace());
-      cudaMemsetAsync(dy_data, 0, dY->numel() * sizeof(T), stream);
-      conv_shift_dy<T><<<grid_dim, x_per_block, 0, stream>>>(
-          x_data, dout_data, dy_data, x_width, y_width, y_half_width,
-          batch_size);
+      zero(device_ctx, dY, static_cast<T>(0.0));
+      ConvShiftDy<T><<<grid_dim, x_per_block, 0, device_ctx.stream()>>>(
+          x_data, dout_data, x_width, y_width, y_half_width, batch_size,
+          dy_data);
     }
   }
 };

paddle/operators/conv_transpose_op.cc

@@ -51,7 +51,7 @@ void ConvTransposeOp::InferShape(framework::InferShapeContext* ctx) const {
                     "as the number of filters.");
 
   std::vector<int64_t> output_shape({in_dims[0], filter_dims[1]});
-  for (size_t i = 0; i < paddings.size(); ++i) {
+  for (size_t i = 0; i < strides.size(); ++i) {
     output_shape.push_back((in_dims[i + 2] - 1) * strides[i] +
                            filter_dims[i + 2]);
   }
@@ -79,11 +79,13 @@ Conv2DTransposeOpMaker::Conv2DTransposeOpMaker(
             "The format of output tensor is also NCHW.");
   AddAttr<std::vector<int>>(
       "strides",
-      "(vector defalut:{1, 1}), strides of convolution transpose operator.")
+      "(vector<int> defalut:{1, 1}), the strides(h_stride, w_stride) of "
+      "convolution transpose operator.")
       .SetDefault({1, 1});
   AddAttr<std::vector<int>>(
       "paddings",
-      "(vector defalut:{0, 0}), paddings of convolution transpose operator.")
+      "(vector<int> defalut:{0, 0}), the paddings(h_pad, w_pad) of convolution "
+      "transpose operator.")
       .SetDefault({0, 0});
   AddComment(R"DOC(
 Convolution2D Transpose Operator.
@@ -132,13 +134,14 @@ Conv3DTransposeOpMaker::Conv3DTransposeOpMaker(
             "Where N is batch size, C is "
             "the number of channels, D is the depth of the feature, H is the "
             "height of the feature, and W is the width of the feature.");
-  AddAttr<std::vector<int>>(
-      "strides",
-      "(vector defalut:{1, 1, 1}), strides of convolution transpose operator.")
+  AddAttr<std::vector<int>>("strides",
+                            "(vector<int> defalut:{1, 1, 1}), the "
+                            "strides{d_stride, h_stride, w_stride} of "
+                            "convolution transpose operator.")
       .SetDefault({1, 1, 1});
-  AddAttr<std::vector<int>>(
-      "paddings",
-      "(vector defalut:{0, 0, 0}), paddings of convolution transpose operator.")
+  AddAttr<std::vector<int>>("paddings",
+                            "(vector<int> defalut:{0, 0, 0}), paddings(d_pad, "
+                            "h_pad, w_pad) of convolution transpose operator.")
       .SetDefault({0, 0, 0});
   AddComment(R"DOC(
 Convolution3D Transpose Operator.

paddle/operators/conv_transpose_op.h

@@ -43,16 +43,12 @@ class Conv3DTransposeOpMaker : public framework::OpProtoAndCheckerMaker {
 class ConvTransposeOp : public framework::OperatorWithKernel {
  public:
   using framework::OperatorWithKernel::OperatorWithKernel;
-
- protected:
   void InferShape(framework::InferShapeContext* ctx) const override;
 };
 
 class ConvTransposeOpGrad : public framework::OperatorWithKernel {
  public:
   using framework::OperatorWithKernel::OperatorWithKernel;
-
- protected:
   void InferShape(framework::InferShapeContext* ctx) const override;
 };
 
@@ -66,6 +62,8 @@ class GemmConvTransposeKernel : public framework::OpKernel<T> {
     Tensor* output = context.Output<Tensor>("Output");
 
     std::vector<int> strides = context.Attr<std::vector<int>>("strides");
+    // Actually, no paddings and groups allowed in conv transpose.
+    std::vector<int> paddings = context.Attr<std::vector<int>>("paddings");
     // TODO(Zhuoyuan): Paddings can be added in future.
     // groups will alway be disabled in conv2dtranspose.
 
@@ -120,6 +118,10 @@ class GemmConvTransposeKernel : public framework::OpKernel<T> {
     math::SetConstant<Place, T> set_zero;
     set_zero(context.device_context(), output, static_cast<T>(0));
 
+    math::Col2ImFunctor<math::ColFormat::kCFO, Place, T> col2im;
+    math::Col2VolFunctor<Place, T> col2vol;
+    std::vector<int> dilations({1, 1, 1});
+
     // convolution transpose: gemm + col2im or col2vol (similar to conv-backward
     // on input)
     for (int i = 0; i < batch_size; i++) {
@@ -138,16 +140,16 @@ class GemmConvTransposeKernel : public framework::OpKernel<T> {
       if (filter_shape_vec.size() == 2) {
         // col2im: col_matrix -> dy
         // from (c * k_h * k_w, h * w) to (c, o_h, o_w)
-        math::Col2ImFunctor<math::ColFormat::kCFO, Place, T> col2im;
-
-        col2im(context.device_context(), output_batch, col, strides[0],
-               strides[1], 0, 0, 0, 0);
+        col2im(context.device_context(), col,
+               std::vector<int>{dilations[0], dilations[1]}, strides,
+               std::vector<int>{paddings[0], paddings[1], paddings[0],
+                                paddings[1]},
+               &output_batch);
       } else if (filter_shape_vec.size() == 3) {
         // col2vol: col_matrix -> dy
         // from (c * k_d * k_h * k_w, d * h * w) to (c, o_d, o_h, o_w)
-        math::Col2VolFunctor<Place, T> col2vol;
-        col2vol(context.device_context(), output_batch, col, strides[0],
-                strides[1], strides[2], 0, 0, 0);
+        col2vol(context.device_context(), col, dilations, strides,
+                std::vector<int>{0, 0, 0}, &output_batch);
       }
     }
   }
@@ -228,6 +230,10 @@ class GemmConvTransposeGradKernel : public framework::OpKernel<T> {
       Tensor filter_grad_;
       math::SetConstant<Place, T> set_zero;
 
+      math::Im2ColFunctor<math::ColFormat::kCFO, Place, T> im2col;
+      math::Vol2ColFunctor<Place, T> vol2col;
+      std::vector<int> dilations({1, 1, 1});
+
       if (input_grad) {
         input_grad->mutable_data<T>(context.GetPlace());
         set_zero(context.device_context(), input_grad, static_cast<T>(0));
@@ -247,17 +253,16 @@ class GemmConvTransposeGradKernel : public framework::OpKernel<T> {
         if (filter_shape_vec.size() == 2) {
           // im2col: dy -> col matrix
           // from (c, o_h, o_w) to (c * k_h * k_w, h * w)
-          math::Im2ColFunctor<math::ColFormat::kCFO, Place, T> im2col;
-          im2col(context.device_context(), output_grad_batch, col, strides[0],
-                 strides[1], paddings[0], paddings[0], paddings[1],
-                 paddings[1]);
+          im2col(context.device_context(), output_grad_batch,
+                 std::vector<int>{dilations[0], dilations[1]}, strides,
+                 std::vector<int>{paddings[0], paddings[1], paddings[0],
+                                  paddings[1]},
+                 &col);
         } else if (filter_shape_vec.size() == 3) {
           // vol2col: dy -> col_matrix
           // from (c, o_d, o_h, o_w) to (c * k_d * k_h * k_w, d * h * w)
-          math::Vol2ColFunctor<Place, T> vol2col;
-          vol2col(context.device_context(), output_grad_batch, col, strides[0],
-                  strides[1], strides[2], paddings[0], paddings[1],
-                  paddings[2]);
+          vol2col(context.device_context(), output_grad_batch, dilations,
+                  strides, paddings, &col);
         }
 
         if (input_grad) {

paddle/operators/cross_entropy_op.cu

@@ -23,8 +23,6 @@ template <typename T>
 __global__ void CrossEntropyGradientKernel(T* dX, const T* dY, const T* X,
                                            const int64_t* label, const int N,
                                            const int D) {
-  // TOOD(qingqing) define CUDA_1D_KERNEL_LOOP macro in a common file.
-  // CUDA_1D_KERNEL_LOOP(i, N) {
   for (int i = blockIdx.x * blockDim.x + threadIdx.x; i < N;
        i += blockDim.x * gridDim.x) {
     int idx = i * D + label[i];

paddle/operators/fill_constant_batch_size_like_op.cu → paddle/operators/fill_constant_batch_size_like_op.cu.cc

@@ -12,8 +12,8 @@
    See the License for the specific language governing permissions and
    limitations under the License. */
 
-#include "paddle/framework/op_registry.h"
 #include "paddle/operators/fill_constant_batch_size_like_op.h"
+#include "paddle/framework/op_registry.h"
 
 namespace ops = paddle::operators;
 REGISTER_OP_GPU_KERNEL(

paddle/operators/fill_zeros_like_op.cu → paddle/operators/fill_zeros_like_op.cu.cc

@@ -12,8 +12,8 @@
    See the License for the specific language governing permissions and
    limitations under the License. */
 
-#include "paddle/framework/op_registry.h"
 #include "paddle/operators/fill_zeros_like_op.h"
+#include "paddle/framework/op_registry.h"
 
 namespace ops = paddle::operators;
 REGISTER_OP_GPU_KERNEL(

paddle/operators/gru_op.cu → paddle/operators/gru_op.cu.cc

@@ -12,7 +12,6 @@
    See the License for the specific language governing permissions and
    limitations under the License. */
 
-#define EIGEN_USE_GPU
 #include "paddle/operators/gru_op.h"
 
 namespace ops = paddle::operators;

paddle/operators/gru_op.h

@@ -27,10 +27,6 @@ namespace operators {
 using Tensor = framework::Tensor;
 using LoDTensor = framework::LoDTensor;
 
-template <typename T, int MajorType = Eigen::RowMajor,
-          typename IndexType = Eigen::DenseIndex>
-using EigenMatrix = framework::EigenMatrix<T, MajorType, IndexType>;
-
 template <typename Place, typename T>
 class GRUKernel : public framework::OpKernel<T> {
  public:
@@ -57,19 +53,15 @@ class GRUKernel : public framework::OpKernel<T> {
 
     bool is_reverse = context.Attr<bool>("is_reverse");
     math::LoDTensor2BatchFunctor<Place, T> to_batch;
-    to_batch(context.device_context(), *input, *batch_gate, true, is_reverse);
+    auto& dev_ctx = context.device_context();
+    to_batch(dev_ctx, *input, *batch_gate, true, is_reverse);
 
-    int frame_size = hidden_dims[1];
-    int batch_size = hidden_dims[0];
-    auto g = EigenMatrix<T>::From(*batch_gate);
-    auto place = context.GetEigenDevice<Place>();
     if (bias) {
-      auto b = EigenMatrix<T>::From(*bias);
-      g.device(place) = g +
-                        b.reshape(Eigen::array<int, 2>({{1, frame_size * 3}}))
-                            .broadcast(Eigen::array<int, 2>({{batch_size, 1}}));
+      math::RowwiseAdd<Place, T> add_bias;
+      add_bias(dev_ctx, *batch_gate, *bias, batch_gate);
     }
 
+    int frame_size = hidden_dims[1];
     math::hl_gru_value<T> gru_value;
     gru_value.gateWeight = const_cast<T*>(weight_data);
     gru_value.stateWeight =
@@ -89,7 +81,7 @@ class GRUKernel : public framework::OpKernel<T> {
       gru_value.gateValue = gate_t.data<T>();
       gru_value.resetOutputValue = reset_hidden_prev_t.data<T>();
       math::GRUUnitFunctor<Place, T>::compute(
-          context.device_context(), gru_value, frame_size, cur_batch_size,
+          dev_ctx, gru_value, frame_size, cur_batch_size,
           math::ActiveType(context.Attr<std::string>("activation")),
           math::ActiveType(context.Attr<std::string>("gate_activation")));
       gru_value.prevOutValue = gru_value.outputValue;
@@ -97,7 +89,7 @@ class GRUKernel : public framework::OpKernel<T> {
 
     math::Batch2LoDTensorFunctor<Place, T> to_seq;
     batch_hidden->set_lod(batch_gate->lod());
-    to_seq(context.device_context(), *batch_hidden, *hidden);
+    to_seq(dev_ctx, *batch_hidden, *hidden);
   }
 
   void Compute(const framework::ExecutionContext& context) const override {
@@ -138,15 +130,14 @@ class GRUGradKernel : public framework::OpKernel<T> {
     batch_reset_hidden_prev_grad.mutable_data<T>(hidden_dims,
                                                  context.GetPlace());
     math::SetConstant<Place, T> zero;
-    zero(context.device_context(), &batch_hidden_grad, static_cast<T>(0.0));
-    zero(context.device_context(), &batch_gate_grad, static_cast<T>(0.0));
-    zero(context.device_context(), &batch_reset_hidden_prev_grad,
-         static_cast<T>(0.0));
+    auto& dev_ctx = context.device_context();
+    zero(dev_ctx, &batch_hidden_grad, static_cast<T>(0.0));
+    zero(dev_ctx, &batch_gate_grad, static_cast<T>(0.0));
+    zero(dev_ctx, &batch_reset_hidden_prev_grad, static_cast<T>(0.0));
 
     bool is_reverse = context.Attr<bool>("is_reverse");
     batch_hidden_grad.set_lod(batch_hidden->lod());
-    to_batch(context.device_context(), *hidden_grad, batch_hidden_grad, false,
-             is_reverse);
+    to_batch(dev_ctx, *hidden_grad, batch_hidden_grad, false, is_reverse);
 
     math::hl_gru_value<T> gru_value;
     gru_value.gateWeight = const_cast<T*>(weight_data);
@@ -157,7 +148,7 @@ class GRUGradKernel : public framework::OpKernel<T> {
     if (weight_grad) {
       gru_grad.gateWeightGrad =
           weight_grad->mutable_data<T>(context.GetPlace());
-      zero(context.device_context(), weight_grad, static_cast<T>(0.0));
+      zero(dev_ctx, weight_grad, static_cast<T>(0.0));
       gru_grad.stateWeightGrad =
           weight_grad->data<T>() + 2 * frame_size * frame_size;
     } else {
@@ -188,7 +179,7 @@ class GRUGradKernel : public framework::OpKernel<T> {
         gru_value.prevOutValue = const_cast<T*>(h0_data);
         if (h0_grad) {
           T* h0_grad_data = h0_grad->mutable_data<T>(context.GetPlace());
-          zero(context.device_context(), h0_grad, static_cast<T>(0.0));
+          zero(dev_ctx, h0_grad, static_cast<T>(0.0));
           gru_grad.prevOutGrad = h0_grad_data;
         } else {
           gru_grad.prevOutGrad = nullptr;
@@ -202,8 +193,7 @@ class GRUGradKernel : public framework::OpKernel<T> {
       }
 
       math::GRUUnitGradFunctor<Place, T>::compute(
-          context.device_context(), gru_value, gru_grad, frame_size,
-          cur_batch_size,
+          dev_ctx, gru_value, gru_grad, frame_size, cur_batch_size,
           math::ActiveType(context.Attr<std::string>("activation")),
           math::ActiveType(context.Attr<std::string>("gate_activation")));
     }
@@ -211,14 +201,12 @@ class GRUGradKernel : public framework::OpKernel<T> {
       input_grad->mutable_data<T>(context.GetPlace());
       math::Batch2LoDTensorFunctor<Place, T> to_seq;
       batch_gate_grad.set_lod(batch_gate->lod());
-      to_seq(context.device_context(), batch_gate_grad, *input_grad);
+      to_seq(dev_ctx, batch_gate_grad, *input_grad);
     }
     if (bias_grad) {
       bias_grad->mutable_data<T>(context.GetPlace());
-      auto d_b = EigenMatrix<T>::From(*bias_grad);
-      auto d_g = EigenMatrix<T>::From(batch_gate_grad);
-      auto place = context.GetEigenDevice<Place>();
-      d_b.device(place) = d_g.sum(Eigen::array<int, 1>({{0}}));
+      math::ColwiseSum<Place, T> col_sum;
+      col_sum(dev_ctx, batch_gate_grad, bias_grad);
     }
   }
 

paddle/operators/lstm_op.cu → paddle/operators/lstm_op.cu.cc

@@ -12,7 +12,6 @@
    See the License for the specific language governing permissions and
    limitations under the License. */
 
-#define EIGEN_USE_GPU
 #include "paddle/operators/lstm_op.h"
 
 namespace ops = paddle::operators;

paddle/operators/lstm_op.h

@@ -24,10 +24,6 @@ namespace operators {
 using LoDTensor = framework::LoDTensor;
 using Tensor = framework::Tensor;
 
-template <typename T, int MajorType = Eigen::RowMajor,
-          typename IndexType = Eigen::DenseIndex>
-using EigenMatrix = framework::EigenMatrix<T, MajorType, IndexType>;
-
 template <typename Place, typename T>
 inline void ReorderInitState(const platform::DeviceContext& ctx,
                              const framework::Tensor& src, const size_t* index,
@@ -65,16 +61,11 @@ class LSTMKernel : public framework::OpKernel<T> {
     framework::DDim dims({in_dims[0], frame_size});
 
     if (bias) {
-      Eigen::array<int, 2> extents({{1, 4 * frame_size}});
-      Eigen::array<int, 2> offsets({{0, 0}});
-      auto b = EigenMatrix<T>::From(*bias);
-      auto gate = EigenMatrix<T>::From(*batch_gate);
-      gate.device(ctx.GetEigenDevice<Place>()) =
-          gate +
-          b.slice(offsets, extents)
-              .reshape(Eigen::array<int, 2>({{1, frame_size * 4}}))
-              .broadcast(
-                  Eigen::array<int, 2>({{static_cast<int>(in_dims[0]), 1}}));
+      Tensor b = *bias;
+      b.Resize({bias->numel(), 1});
+      Tensor gate_bias = b.Slice(0, 4 * frame_size);
+      math::RowwiseAdd<Place, T> add_bias;
+      add_bias(device_ctx, *batch_gate, gate_bias, batch_gate);
     }
 
     math::LstmMetaValue<T> lstm_value;
@@ -350,16 +341,11 @@ class LSTMGradKernel : public framework::OpKernel<T> {
     }
     if (bias && bias_g) {
       /* backward bias */
-      int m = static_cast<int>(batch_gate_g.dims()[0]);
-      int n = static_cast<int>(batch_gate_g.dims()[1]);
-
-      Tensor ones;
-      ones.mutable_data<T>({m}, ctx.GetPlace());
-      math::SetConstant<Place, T> set;
-      set(device_ctx, &ones, static_cast<T>(1.0));
-
-      math::gemv<Place, T>(device_ctx, true, m, n, 1., batch_gate_g.data<T>(),
-                           ones.data<T>(), 0., bias_g->data<T>());
+      Tensor b_g = *bias_g;
+      b_g.Resize({bias_g->numel(), 1});
+      Tensor gate_bias_g = b_g.Slice(0, 4 * frame_size);
+      math::ColwiseSum<Place, T> col_sum;
+      col_sum(device_ctx, batch_gate_g, &gate_bias_g);
     }
 
     if (h0 && h0_g) {

paddle/operators/math/CMakeLists.txt

 add_subdirectory(detail)
 
 if(WITH_GPU)
-    nv_library(math_function SRCS math_function.cc math_function.cu im2col.cc im2col.cu DEPS cblas device_context operator)
+    nv_library(math_function SRCS math_function.cc math_function.cu im2col.cc im2col.cu DEPS cblas device_context)
     nv_test(math_function_gpu_test SRCS math_function_test.cu DEPS math_function tensor)
     nv_library(selected_rows_functor SRCS selected_rows_functor.cc selected_rows_functor.cu DEPS selected_rows math_function)
     nv_test(selected_rows_functor_gpu_test SRCS selected_rows_functor_test.cu DEPS selected_rows_functor)
-    nv_library(softmax SRCS softmax.cc softmax.cu DEPS operator)
-    nv_library(cross_entropy SRCS cross_entropy.cc cross_entropy.cu DEPS operator)
+    nv_library(softmax SRCS softmax.cc softmax.cu DEPS device_context)
+    nv_library(cross_entropy SRCS cross_entropy.cc cross_entropy.cu DEPS device_context)
     nv_library(pooling SRCS pooling.cc pooling.cu DEPS device_context)
     nv_library(sequence_pooling SRCS sequence_pooling.cc sequence_pooling.cu DEPS device_context math_function)
     nv_library(vol2col SRCS vol2col.cc vol2col.cu DEPS device_context)
-    nv_library(context_project SRCS context_project.cc context_project.cu DEPS device_context)
+    nv_library(context_project SRCS context_project.cc context_project.cu DEPS device_context math_function)
     nv_library(sequence2batch SRCS sequence2batch.cc sequence2batch.cu DEPS device_context)
     nv_library(lstm_compute SRCS lstm_compute.cc lstm_compute.cu DEPS device_context activation_functions)
     nv_library(gru_compute SRCS gru_compute.cc gru_compute.cu DEPS device_context activation_functions math_function)
 else()
-    cc_library(math_function SRCS math_function.cc im2col.cc DEPS cblas device_context operator)
+    cc_library(math_function SRCS math_function.cc im2col.cc DEPS cblas device_context)
     cc_library(selected_rows_functor SRCS selected_rows_functor.cc DEPS selected_rows math_function)
-    cc_library(softmax SRCS softmax.cc DEPS operator)
-    cc_library(cross_entropy SRCS cross_entropy.cc DEPS operator)
+    cc_library(softmax SRCS softmax.cc DEPS device_context)
+    cc_library(cross_entropy SRCS cross_entropy.cc DEPS device_context)
     cc_library(pooling SRCS pooling.cc DEPS device_context)
     cc_library(sequence_pooling SRCS sequence_pooling.cc DEPS device_context math_function)
     cc_library(vol2col SRCS vol2col.cc DEPS device_context)
-    cc_library(context_project SRCS context_project.cc DEPS device_context)
+    cc_library(context_project SRCS context_project.cc DEPS device_context math_function)
     cc_library(sequence2batch SRCS sequence2batch.cc DEPS device_context)
     cc_library(lstm_compute SRCS lstm_compute.cc DEPS device_context activation_functions)
     cc_library(gru_compute SRCS gru_compute.cc DEPS device_context activation_functions math_function)

paddle/operators/math/context_project.h

@@ -14,9 +14,9 @@ limitations under the License. */
 
 #pragma once
 
-#include "paddle/framework/eigen.h"
 #include "paddle/framework/lod_tensor.h"
 #include "paddle/operators/math/im2col.h"
+#include "paddle/operators/math/math_function.h"
 
 namespace paddle {
 namespace operators {
@@ -24,9 +24,6 @@ namespace math {
 
 using Tensor = framework::Tensor;
 using LoDTensor = framework::LoDTensor;
-template <typename T, int MajorType = Eigen::RowMajor,
-          typename IndexType = Eigen::DenseIndex>
-using EigenMatrix = framework::EigenMatrix<T, MajorType, IndexType>;
 
 /*
  * \brief Context projection concatenates features in adjacent time-steps in
@@ -88,13 +85,18 @@ template <typename Place, typename T>
 class ContextProjectFunctor {
  public:
   void operator()(const platform::DeviceContext& context, const LoDTensor& in,
-                  const Tensor& padding_data, Tensor& col,
-                  bool padding_trainable, int context_start, int context_length,
-                  int context_stride, int up_pad, int down_pad) {
+                  const Tensor& padding_data, bool padding_trainable,
+                  const int context_start, const int context_length,
+                  const int context_stride, const int up_pad,
+                  const int down_pad, Tensor* col) {
     auto lod_level_0 = in.lod()[0];
 
     math::Im2ColFunctor<math::ColFormat::kOCF, Place, float> im2col_ocf;
 
+    std::vector<int> dilation({1, 1});
+    std::vector<int> padding({up_pad, 0, down_pad, 0});
+    std::vector<int> stride({context_stride, 1});
+
     int input_row_begin, input_row_end;
     int sequence_height, sequence_width;
     sequence_width = in.dims()[1];
@@ -105,7 +107,7 @@ class ContextProjectFunctor {
                             : static_cast<int>(lod_level_0[i]);
       input_row_end = static_cast<int>(lod_level_0[i + 1]);
 
-      Tensor out_t = col.Slice(static_cast<int>(lod_level_0[i]),
+      Tensor out_t = col->Slice(static_cast<int>(lod_level_0[i]),
                                 static_cast<int>(lod_level_0[i + 1]));
 
       sequence_height = static_cast<int>(out_t.dims()[0]);
@@ -123,16 +125,13 @@ class ContextProjectFunctor {
             {1, input_row_end - input_row_begin,
              sequence_width});  // input_channels, input_height, input_width
         in_t.Resize(framework::make_ddim(input_shape));
-
-        im2col_ocf(context, in_t, out_t,
-                   /*stride_height*/ context_stride, /*stride_width*/ 1, up_pad,
-                   down_pad, 0, 0);
+        im2col_ocf(context, in_t, dilation, stride, padding, &out_t);
         out_t.Resize({sequence_height, context_length * sequence_width});
       }
     }
     if (padding_trainable) {
       for (int i = 0; i < static_cast<int>(lod_level_0.size()) - 1; ++i) {
-        Tensor out_t = col.Slice(static_cast<int>(lod_level_0[i]),
+        Tensor out_t = col->Slice(static_cast<int>(lod_level_0[i]),
                                   static_cast<int>(lod_level_0[i + 1]));
 
         sequence_height = static_cast<int>(out_t.dims()[0]);
@@ -150,9 +149,7 @@ class ContextProjectFunctor {
             Tensor out_t_sub = out_t.Slice(k * context_length,
                                            k * context_length + padding_size);
             Tensor w_sub = padding_data.Slice(k, k + padding_size);
-            auto out_t_sub_e = EigenMatrix<T>::From(out_t_sub);
-            auto w_sub_e = EigenMatrix<T>::From(w_sub);
-            out_t_sub_e.device(*context.GetEigenDevice<Place>()) = w_sub_e;
+            out_t_sub.CopyFrom(w_sub, context.GetPlace(), context);
           }
         }
         if (down_pad > 0) {  // add down pad
@@ -182,9 +179,7 @@ class ContextProjectFunctor {
                 (down_pad_begin_row + t) * context_length);
             Tensor w_sub = padding_data.Slice(
                 up_pad + padding_idx, up_pad + padding_idx + padding_size);
-            auto out_t_sub_e = EigenMatrix<T>::From(out_t_sub);
-            auto w_sub_e = EigenMatrix<T>::From(w_sub);
-            out_t_sub_e.device(*context.GetEigenDevice<Place>()) = w_sub_e;
+            out_t_sub.CopyFrom(w_sub, context.GetPlace(), context);
           }
         }
         out_t.Resize({sequence_height, context_length * sequence_width});
@@ -196,14 +191,19 @@ class ContextProjectFunctor {
 template <typename Place, typename T>
 class ContextProjectGradFunctor {
  public:
-  void operator()(const platform::DeviceContext& context, LoDTensor& in,
-                  Tensor& padding_data, Tensor& col, bool padding_trainable,
-                  int context_start, int context_length, int context_stride,
-                  int up_pad, int down_pad, bool input_grad, bool pad_grad) {
+  void operator()(const platform::DeviceContext& context, const LoDTensor& in,
+                  bool padding_trainable, const int context_start,
+                  const int context_length, const int context_stride,
+                  const int up_pad, const int down_pad, bool pad_grad,
+                  bool input_grad, Tensor* padding_data, Tensor* col) {
     auto lod_level_0 = in.lod()[0];
 
     math::Col2ImFunctor<math::ColFormat::kOCF, Place, float> col2im_ocf;
 
+    std::vector<int> dilation({1, 1});
+    std::vector<int> padding({up_pad, 0, down_pad, 0});
+    std::vector<int> stride({context_stride, 1});
+
     int input_row_begin, input_row_end;
     int sequence_height, sequence_width;
     sequence_width = in.dims()[1];
@@ -215,7 +215,7 @@ class ContextProjectGradFunctor {
                               : static_cast<int>(lod_level_0[i]);
         input_row_end = static_cast<int>(lod_level_0[i + 1]);
 
-        Tensor out_t = col.Slice(static_cast<int>(lod_level_0[i]),
+        Tensor out_t = col->Slice(static_cast<int>(lod_level_0[i]),
                                   static_cast<int>(lod_level_0[i + 1]));
 
         sequence_height = static_cast<int>(out_t.dims()[0]);
@@ -234,9 +234,7 @@ class ContextProjectGradFunctor {
                sequence_width});  // input_channels, input_height, input_width
           in_t.Resize(framework::make_ddim(input_shape));
 
-          col2im_ocf(context, in_t, out_t,
-                     /*stride_height*/ context_stride, /*stride_width*/ 1,
-                     up_pad, down_pad, 0, 0);
+          col2im_ocf(context, out_t, dilation, stride, padding, &in_t);
           out_t.Resize({sequence_height, context_length * sequence_width});
         }
       }
@@ -244,7 +242,7 @@ class ContextProjectGradFunctor {
     if (pad_grad) {
       if (padding_trainable) {
         for (int i = 0; i < static_cast<int>(lod_level_0.size()) - 1; ++i) {
-          Tensor out_t = col.Slice(static_cast<int>(lod_level_0[i]),
+          Tensor out_t = col->Slice(static_cast<int>(lod_level_0[i]),
                                     static_cast<int>(lod_level_0[i + 1]));
 
           sequence_height = static_cast<int>(out_t.dims()[0]);
@@ -259,11 +257,9 @@ class ContextProjectGradFunctor {
                   k + context_length < up_pad ? context_length : up_pad - k;
               Tensor out_t_sub = out_t.Slice(k * context_length,
                                              k * context_length + padding_size);
-              Tensor w_sub = padding_data.Slice(k, k + padding_size);
-              auto out_t_sub_e = EigenMatrix<T>::From(out_t_sub);
-              auto w_sub_e = EigenMatrix<T>::From(w_sub);
-              w_sub_e.device(*context.GetEigenDevice<Place>()) =
-                  w_sub_e + out_t_sub_e;
+              Tensor w_sub = padding_data->Slice(k, k + padding_size);
+              axpy<Place, T>(context, w_sub.numel(), static_cast<T>(1),
+                             out_t_sub.data<T>(), w_sub.data<T>());
             }
           }
           if (down_pad > 0) {
@@ -292,12 +288,10 @@ class ContextProjectGradFunctor {
               Tensor out_t_sub = out_t.Slice(
                   (down_pad_begin_row + t) * context_length - padding_size,
                   (down_pad_begin_row + t) * context_length);
-              Tensor w_sub = padding_data.Slice(
+              Tensor w_sub = padding_data->Slice(
                   up_pad + padding_idx, up_pad + padding_idx + padding_size);
-              auto out_t_sub_e = EigenMatrix<T>::From(out_t_sub);
-              auto w_sub_e = EigenMatrix<T>::From(w_sub);
-              w_sub_e.device(*context.GetEigenDevice<Place>()) =
-                  w_sub_e + out_t_sub_e;
+              axpy<Place, T>(context, w_sub.numel(), static_cast<T>(1),
+                             out_t_sub.data<T>(), w_sub.data<T>());
             }
           }
           out_t.Resize({sequence_height, context_length * sequence_width});

paddle/operators/math/cross_entropy.h

@@ -14,7 +14,6 @@
 
 #pragma once
 #include "paddle/framework/eigen.h"
-#include "paddle/framework/operator.h"
 #include "paddle/framework/tensor.h"
 #include "paddle/platform/hostdevice.h"
 

paddle/operators/math/im2col.cc

@@ -28,57 +28,55 @@ class Im2ColFunctor<paddle::operators::math::ColFormat::kCFO,
                     platform::CPUPlace, T> {
  public:
   void operator()(const platform::DeviceContext& context,
-                  const framework::Tensor& im, framework::Tensor& col,
-                  int stride_height, int stride_width, int padding_up,
-                  int padding_down, int padding_left, int padding_right) {
+                  const framework::Tensor& im, const std::vector<int>& dilation,
+                  const std::vector<int>& stride,
+                  const std::vector<int>& padding, framework::Tensor* col) {
     PADDLE_ENFORCE(im.dims().size() == 3);
-    PADDLE_ENFORCE(col.dims().size() == 5);
+    PADDLE_ENFORCE(col->dims().size() == 5);
 
-    int input_channels = im.dims()[0];
-    int input_height = im.dims()[1];
-    int input_width = im.dims()[2];
-    int filter_height = col.dims()[1];
-    int filter_width = col.dims()[2];
-    int output_height = col.dims()[3];
-    int output_width = col.dims()[4];
+    int im_channels = im.dims()[0];
+    int im_height = im.dims()[1];
+    int im_width = im.dims()[2];
+    int filter_height = col->dims()[1];
+    int filter_width = col->dims()[2];
+    int col_height = col->dims()[3];
+    int col_width = col->dims()[4];
 
-    PADDLE_ENFORCE_EQ(
-        (input_height + padding_up + padding_down - filter_height) /
-                stride_height +
+    PADDLE_ENFORCE_EQ((im_height + padding[0] + padding[2] -
+                       ((dilation[0] * (filter_height - 1) + 1))) /
+                              stride[0] +
                           1,
-        output_height,
+                      col_height,
                       "Output_height and padding(padding_up, padding_down) are "
                       "inconsistent.");
-    PADDLE_ENFORCE_EQ(
-        (input_width + padding_left + padding_right - filter_width) /
-                stride_width +
+    PADDLE_ENFORCE_EQ((im_width + padding[1] + padding[3] -
+                       ((dilation[1] * (filter_width - 1) + 1))) /
+                              stride[1] +
                           1,
-        output_width,
-        "output_width and padding(padding_left, padding_right) are "
+                      col_width,
+                      "Output_height and padding(padding_up, padding_down) are "
                       "inconsistent.");
 
-    int channels_col = input_channels * filter_height * filter_width;
+    int channels_col = im_channels * filter_height * filter_width;
 
     const T* im_data = im.data<T>();
-    T* col_data = col.data<T>();
+    T* col_data = col->data<T>();
 
     for (int c = 0; c < channels_col; ++c) {
       int w_offset = c % filter_width;
       int h_offset = (c / filter_width) % filter_height;
       int c_im = c / filter_width / filter_height;
-      for (int h = 0; h < output_height; ++h) {
-        for (int w = 0; w < output_width; ++w) {
-          int im_row_idx = h * stride_height + h_offset - padding_up;
-          int im_col_idx = w * stride_width + w_offset - padding_left;
+      for (int h = 0; h < col_height; ++h) {
+        for (int w = 0; w < col_width; ++w) {
+          int im_row_idx = h * stride[0] - padding[0] + h_offset * dilation[0];
+          int im_col_idx = w * stride[1] - padding[1] + w_offset * dilation[1];
+          int col_idx = (c * col_height + h) * col_width + w;
+          int im_idx = (im_row_idx + c_im * im_height) * im_width + im_col_idx;
 
-          if (im_row_idx < 0 || im_row_idx >= input_height || im_col_idx < 0 ||
-              im_col_idx >= input_width) {
-            col_data[(c * output_height + h) * output_width + w] = T(0);
-          } else {
-            im_row_idx += c_im * input_height;
-            col_data[(c * output_height + h) * output_width + w] =
-                im_data[im_row_idx * input_width + im_col_idx];
-          }
+          col_data[col_idx] = (im_row_idx < 0 || im_row_idx >= im_height ||
+                               im_col_idx < 0 || im_col_idx >= im_width)
+                                  ? static_cast<T>(0)
+                                  : im_data[im_idx];
         }
       }
     }
@@ -94,54 +92,55 @@ template <class T>
 class Col2ImFunctor<paddle::operators::math::ColFormat::kCFO,
                     platform::CPUPlace, T> {
  public:
-  void operator()(const platform::DeviceContext& context, framework::Tensor& im,
-                  const framework::Tensor& col, int stride_height,
-                  int stride_width, int padding_up, int padding_down,
-                  int padding_left, int padding_right) {
-    PADDLE_ENFORCE(im.dims().size() == 3);
+  void operator()(const platform::DeviceContext& context,
+                  const framework::Tensor& col,
+                  const std::vector<int>& dilation,
+                  const std::vector<int>& stride,
+                  const std::vector<int>& padding, framework::Tensor* im) {
+    PADDLE_ENFORCE(im->dims().size() == 3);
     PADDLE_ENFORCE(col.dims().size() == 5);
-    int input_channels = im.dims()[0];
-    int input_height = im.dims()[1];
-    int input_width = im.dims()[2];
+    int im_channels = im->dims()[0];
+    int im_height = im->dims()[1];
+    int im_width = im->dims()[2];
     int filter_height = col.dims()[1];
     int filter_width = col.dims()[2];
-    int output_height = col.dims()[3];
-    int output_width = col.dims()[4];
+    int col_height = col.dims()[3];
+    int col_width = col.dims()[4];
 
-    PADDLE_ENFORCE_EQ(
-        (input_height + padding_up + padding_down - filter_height) /
-                stride_height +
+    PADDLE_ENFORCE_EQ((im_height + padding[0] + padding[2] -
+                       ((dilation[0] * (filter_height - 1) + 1))) /
+                              stride[0] +
                           1,
-        output_height,
+                      col_height,
                       "Output_height and padding(padding_up, padding_down) are "
                       "inconsistent.");
-    PADDLE_ENFORCE_EQ(
-        (input_width + padding_left + padding_right - filter_width) /
-                stride_width +
+    PADDLE_ENFORCE_EQ((im_width + padding[1] + padding[3] -
+                       ((dilation[1] * (filter_width - 1) + 1))) /
+                              stride[1] +
                           1,
-        output_width,
-        "output_width and padding(padding_left, padding_right) are "
+                      col_width,
+                      "Output_height and padding(padding_up, padding_down) are "
                       "inconsistent.");
 
-    int channels_col = input_channels * filter_height * filter_width;
+    int channels_col = im_channels * filter_height * filter_width;
 
-    T* im_data = im.data<T>();
+    T* im_data = im->data<T>();
     const T* col_data = col.data<T>();
 
     for (int c = 0; c < channels_col; ++c) {
       int w_offset = c % filter_width;
       int h_offset = (c / filter_width) % filter_height;
       int c_im = c / filter_width / filter_height;
-      for (int h = 0; h < output_height; ++h) {
-        for (int w = 0; w < output_width; ++w) {
-          int im_row_idx = h * stride_height + h_offset - padding_up;
-          int im_col_idx = w * stride_width + w_offset - padding_left;
+      for (int h = 0; h < col_height; ++h) {
+        for (int w = 0; w < col_width; ++w) {
+          int im_row_idx = h * stride[0] - padding[0] + h_offset * dilation[0];
+          int im_col_idx = w * stride[1] - padding[1] + w_offset * dilation[1];
 
-          if ((im_row_idx) >= 0 && (im_row_idx) < input_height &&
-              (im_col_idx) >= 0 && (im_col_idx) < input_width) {
-            im_row_idx += c_im * input_height;
-            im_data[im_row_idx * input_width + im_col_idx] +=
-                col_data[(c * output_height + h) * output_width + w];
+          if ((im_row_idx) >= 0 && (im_row_idx) < im_height &&
+              (im_col_idx) >= 0 && (im_col_idx) < im_width) {
+            im_row_idx += c_im * im_height;
+            im_data[im_row_idx * im_width + im_col_idx] +=
+                col_data[(c * col_height + h) * col_width + w];
           }
         }
       }
@@ -168,64 +167,59 @@ class Im2ColFunctor<paddle::operators::math::ColFormat::kOCF,
                     platform::CPUPlace, T> {
  public:
   void operator()(const platform::DeviceContext& context,
-                  const framework::Tensor& im, framework::Tensor& col,
-                  int stride_height, int stride_width, int padding_up,
-                  int padding_down, int padding_left, int padding_right) {
+                  const framework::Tensor& im, const std::vector<int>& dilation,
+                  const std::vector<int>& stride,
+                  const std::vector<int>& padding, framework::Tensor* col) {
     PADDLE_ENFORCE(im.dims().size() == 3);
-    PADDLE_ENFORCE(col.dims().size() == 5);
-    int input_channels = im.dims()[0];
-    int input_height = im.dims()[1];
-    int input_width = im.dims()[2];
-    int filter_height = col.dims()[3];
-    int filter_width = col.dims()[4];
-    int output_height = col.dims()[0];
-    int output_width = col.dims()[1];
+    PADDLE_ENFORCE(col->dims().size() == 5);
+    int im_channels = im.dims()[0];
+    int im_height = im.dims()[1];
+    int im_width = im.dims()[2];
+    int filter_height = col->dims()[3];
+    int filter_width = col->dims()[4];
+    int col_height = col->dims()[0];
+    int col_width = col->dims()[1];
 
     PADDLE_ENFORCE_EQ(
-        (input_height + padding_up + padding_down - filter_height) /
-                stride_height +
-            1,
-        output_height,
+        (im_height + padding[0] + padding[2] - filter_height) / stride[0] + 1,
+        col_height,
         "Output_height and padding(padding_up, padding_down) are "
         "inconsistent.");
     PADDLE_ENFORCE_EQ(
-        (input_width + padding_left + padding_right - filter_width) /
-                stride_width +
-            1,
-        output_width,
-        "output_width and padding(padding_left, padding_right) are "
+        (im_width + padding[1] + padding[3] - filter_width) / stride[1] + 1,
+        col_width,
+        "col_width and padding(padding_left, padding_right) are "
         "inconsistent.");
 
     const T* im_data = im.data<T>();
-    T* col_data = col.data<T>();
+    T* col_data = col->data<T>();
 
-    for (int col_row_idx = 0; col_row_idx < output_height; ++col_row_idx) {
-      for (int col_col_idx = 0; col_col_idx < output_width; ++col_col_idx) {
-        for (int channel = 0; channel < input_channels; ++channel) {
+    for (int col_row_idx = 0; col_row_idx < col_height; ++col_row_idx) {
+      for (int col_col_idx = 0; col_col_idx < col_width; ++col_col_idx) {
+        for (int channel = 0; channel < im_channels; ++channel) {
           for (int filter_row_idx = 0; filter_row_idx < filter_height;
                ++filter_row_idx) {
             for (int filter_col_idx = 0; filter_col_idx < filter_width;
                  ++filter_col_idx) {
               int im_row_offset =
-                  col_row_idx * stride_height + filter_row_idx - padding_up;
+                  col_row_idx * stride[0] + filter_row_idx - padding[0];
               int im_col_offset =
-                  col_col_idx * stride_width + filter_col_idx - padding_left;
-              int col_offset = ((((col_row_idx)*output_width + col_col_idx) *
-                                     input_channels +
+                  col_col_idx * stride[1] + filter_col_idx - padding[1];
+              int col_offset =
+                  ((((col_row_idx)*col_width + col_col_idx) * im_channels +
                     channel) *
                        filter_height +
                    filter_row_idx) *
                       filter_width +
                   filter_col_idx;
-              if (im_row_offset < 0 || im_row_offset >= input_height ||
-                  im_col_offset < 0 || im_col_offset >= input_width) {
-                col_data[col_offset] = T(0);
-              } else {
-                int im_offset =
-                    (channel * input_height + im_row_offset) * input_width +
+
+              int im_offset = (channel * im_height + im_row_offset) * im_width +
                               im_col_offset;
-                col_data[col_offset] = im_data[im_offset];
-              }
+              col_data[col_offset] =
+                  (im_row_offset < 0 || im_row_offset >= im_height ||
+                   im_col_offset < 0 || im_col_offset >= im_width)
+                      ? static_cast<T>(0)
+                      : im_data[im_offset];
             }
           }
         }
@@ -243,60 +237,57 @@ template <class T>
 class Col2ImFunctor<paddle::operators::math::ColFormat::kOCF,
                     platform::CPUPlace, T> {
  public:
-  void operator()(const platform::DeviceContext& context, framework::Tensor& im,
-                  const framework::Tensor& col, int stride_height,
-                  int stride_width, int padding_up, int padding_down,
-                  int padding_left, int padding_right) {
-    PADDLE_ENFORCE(im.dims().size() == 3);
+  void operator()(const platform::DeviceContext& context,
+                  const framework::Tensor& col,
+                  const std::vector<int>& dilation,
+                  const std::vector<int>& stride,
+                  const std::vector<int>& padding, framework::Tensor* im) {
+    PADDLE_ENFORCE(im->dims().size() == 3);
     PADDLE_ENFORCE(col.dims().size() == 5);
-    int input_channels = im.dims()[0];
-    int input_height = im.dims()[1];
-    int input_width = im.dims()[2];
+    int im_channels = im->dims()[0];
+    int im_height = im->dims()[1];
+    int im_width = im->dims()[2];
     int filter_height = col.dims()[3];
     int filter_width = col.dims()[4];
-    int output_height = col.dims()[0];
-    int output_width = col.dims()[1];
+    int col_height = col.dims()[0];
+    int col_width = col.dims()[1];
 
     PADDLE_ENFORCE_EQ(
-        (input_height + padding_up + padding_down - filter_height) /
-                stride_height +
-            1,
-        output_height,
+        (im_height + padding[0] + padding[2] - filter_height) / stride[0] + 1,
+        col_height,
         "Output_height and padding(padding_up, padding_down) are "
         "inconsistent.");
     PADDLE_ENFORCE_EQ(
-        (input_width + padding_left + padding_right - filter_width) /
-                stride_width +
-            1,
-        output_width,
-        "output_width and padding(padding_left, padding_right) are "
+        (im_width + padding[1] + padding[3] - filter_width) / stride[1] + 1,
+        col_width,
+        "col_width and padding(padding_left, padding_right) are "
         "inconsistent.");
 
-    T* im_data = im.data<T>();
+    T* im_data = im->data<T>();
     const T* col_data = col.data<T>();
 
-    for (int col_row_idx = 0; col_row_idx < output_height; ++col_row_idx) {
-      for (int col_col_idx = 0; col_col_idx < output_width; ++col_col_idx) {
-        for (int channel = 0; channel < input_channels; ++channel) {
+    for (int col_row_idx = 0; col_row_idx < col_height; ++col_row_idx) {
+      for (int col_col_idx = 0; col_col_idx < col_width; ++col_col_idx) {
+        for (int channel = 0; channel < im_channels; ++channel) {
           for (int filter_row_idx = 0; filter_row_idx < filter_height;
                ++filter_row_idx) {
             for (int filter_col_idx = 0; filter_col_idx < filter_width;
                  ++filter_col_idx) {
               int im_row_offset =
-                  col_row_idx * stride_height + filter_row_idx - padding_up;
+                  col_row_idx * stride[0] + filter_row_idx - padding[0];
               int im_col_offset =
-                  col_col_idx * stride_width + filter_col_idx - padding_left;
-              int col_offset = (((col_row_idx * output_width + col_col_idx) *
-                                     input_channels +
+                  col_col_idx * stride[1] + filter_col_idx - padding[1];
+              int col_offset =
+                  (((col_row_idx * col_width + col_col_idx) * im_channels +
                     channel) *
                        filter_height +
                    filter_row_idx) *
                       filter_width +
                   filter_col_idx;
-              if (im_row_offset >= 0 && im_row_offset < input_height &&
-                  im_col_offset >= 0 && im_col_offset < input_width) {
+              if (im_row_offset >= 0 && im_row_offset < im_height &&
+                  im_col_offset >= 0 && im_col_offset < im_width) {
                 int im_offset =
-                    (channel * input_height + im_row_offset) * input_width +
+                    (channel * im_height + im_row_offset) * im_width +
                     im_col_offset;
                 im_data[im_offset] += col_data[col_offset];
               }

paddle/operators/math/im2col.h

@@ -35,6 +35,15 @@ enum class ColFormat { kCFO = 0, kOCF = 1 };
  * \param colData  Column data.
  * \param colShape The shape of colData.
  *
+ * \param dilations    dilation data.
+ * \param 2-dimension  [dilation_height, dilation_width].
+ *
+ * \param strides      stride data.
+ * \param 2-dimension  [stride_height, stride_width].
+ *
+ * \param paddings     padding data.
+ * \param 4-dimension  [up_pad, left_pad, down_pad, right_pad].
+ *
  * If the template argument Format is kCFO, the shape of colData is:
  * [input_channels, filter_height, filter_width, output_height, output_width]
  * So, it is easy to reshape into a convolution matrix for convolution
@@ -73,18 +82,19 @@ template <ColFormat Format, typename Place, typename T>
 class Im2ColFunctor {
  public:
   void operator()(const platform::DeviceContext& context,
-                  const framework::Tensor& im, framework::Tensor& col,
-                  int stride_height, int stride_width, int padding_up,
-                  int padding_down, int padding_left, int padding_right);
+                  const framework::Tensor& im, const std::vector<int>& dilation,
+                  const std::vector<int>& stride,
+                  const std::vector<int>& padding, framework::Tensor* col);
 };
 
 template <ColFormat Format, typename Place, typename T>
 class Col2ImFunctor {
  public:
-  void operator()(const platform::DeviceContext& context, framework::Tensor& im,
-                  const framework::Tensor& col, int stride_height,
-                  int stride_width, int padding_up, int padding_down,
-                  int padding_left, int padding_right);
+  void operator()(const platform::DeviceContext& context,
+                  const framework::Tensor& col,
+                  const std::vector<int>& dilation,
+                  const std::vector<int>& stride,
+                  const std::vector<int>& padding, framework::Tensor* im);
 };
 
 }  // namespace math

paddle/operators/math/im2col_test.cc

@@ -45,10 +45,14 @@ void testIm2col() {
   int input_height = 2;
   int input_width = 3;
   int filter_size = 2;
-  int stride = 1;
-  int padding = 0;
-  int output_height = (input_height - filter_size + 2 * padding) / stride + 1;
-  int output_width = (input_width - filter_size + 2 * padding) / stride + 1;
+  std::vector<int> stride({1, 1});  // stride_y, stride_x
+  std::vector<int> padding(
+      {0, 0, 0, 0});                  // up_pad, left_pad, down_pad, right_pad
+  std::vector<int> dilation({1, 1});  // dilation_y, dilation_x
+  int output_height =
+      (input_height - filter_size + padding[0] + padding[1]) / stride[0] + 1;
+  int output_width =
+      (input_width - filter_size + padding[2] + padding[3]) / stride[1] + 1;
   float* input_ptr = input_tmp.mutable_data<float>(
       {1, input_height, input_width}, paddle::platform::CPUPlace());
   float arr[6] = {0, 1, 2, 3, 4, 5};
@@ -85,10 +89,8 @@ void testIm2col() {
       paddle::operators::math::ColFormat::kOCF, Place, float>
       im2col_ocf;
 
-  im2col(*context, input, output_cfo, stride, stride, padding, padding, padding,
-         padding);
-  im2col_ocf(*context, input, output_ocf, stride, stride, padding, padding,
-             padding, padding);
+  im2col(*context, input, dilation, stride, padding, &output_cfo);
+  im2col_ocf(*context, input, dilation, stride, padding, &output_ocf);
 
   float out_cfo_data[] = {0, 1, 1, 2, 3, 4, 4, 5};
   float out_ocf_data[] = {0, 1, 3, 4, 1, 2, 4, 5};
@@ -131,8 +133,7 @@ void testIm2col() {
     input.CopyFrom(input_tmp, *place, *context);
   }
 
-  col2im(*context, input, output_cfo, stride, stride, padding, padding, padding,
-         padding);
+  col2im(*context, output_cfo, dilation, stride, padding, &input);
 
   float* in_ptr;
   if (paddle::platform::is_cpu_place(*place)) {
@@ -153,8 +154,7 @@ void testIm2col() {
     input.CopyFrom(input_tmp, *place, *context);
   }
 
-  col2im_ocf(*context, input, output_ocf, stride, stride, padding, padding,
-             padding, padding);
+  col2im_ocf(*context, output_ocf, dilation, stride, padding, &input);
 
   if (paddle::platform::is_cpu_place(*place)) {
     in_ptr = input.data<float>();

paddle/operators/math/math_function.cc

@@ -14,6 +14,7 @@ limitations under the License. */
 
 #include "paddle/operators/math/math_function.h"
 #include "paddle/framework/data_type.h"
+#include "paddle/operators/math/math_function_impl.h"
 
 namespace paddle {
 namespace operators {
@@ -232,7 +233,34 @@ void gemv<platform::CPUPlace, double>(const platform::DeviceContext& context,
   cblas_dgemv(CblasRowMajor, transA, M, N, alpha, A, N, B, 1, beta, C, 1);
 }
 
+template <>
+void axpy<platform::CPUPlace, float>(const platform::DeviceContext& context,
+                                     const int n, const float alpha,
+                                     const float* x, float* y) {
+  cblas_saxpy(n, alpha, x, 1, y, 1);
+}
+
+template <>
+void axpy<platform::CPUPlace, double>(const platform::DeviceContext& context,
+                                      const int n, const double alpha,
+                                      const double* x, double* y) {
+  cblas_daxpy(n, alpha, x, 1, y, 1);
+}
+
 template struct SetConstant<platform::CPUPlace, float>;
+template struct SetConstant<platform::CPUPlace, double>;
+template struct SetConstant<platform::CPUPlace, int>;
+
+#define DEFINE_CPU_TRANS(RANK)                                \
+  template struct Transpose<platform::CPUPlace, float, RANK>; \
+  template struct Transpose<platform::CPUPlace, double, RANK>;
+
+DEFINE_CPU_TRANS(1);
+DEFINE_CPU_TRANS(2);
+DEFINE_CPU_TRANS(3);
+DEFINE_CPU_TRANS(4);
+DEFINE_CPU_TRANS(5);
+DEFINE_CPU_TRANS(6);
 
 struct TensorSetConstantCPU {
   TensorSetConstantCPU(framework::Tensor* tensor, float value)
@@ -280,6 +308,11 @@ void set_constant(const platform::DeviceContext& context,
 #endif
 }
 
+template struct RowwiseAdd<platform::CPUPlace, float>;
+template struct RowwiseAdd<platform::CPUPlace, double>;
+template struct ColwiseSum<platform::CPUPlace, float>;
+template struct ColwiseSum<platform::CPUPlace, double>;
+
 }  // namespace math
 }  // namespace operators
 }  // namespace paddle

paddle/operators/math/math_function.cu

@@ -12,8 +12,10 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License. */
 
+#define EIGEN_USE_GPU
 #include "paddle/framework/data_type.h"
 #include "paddle/operators/math/math_function.h"
+#include "paddle/operators/math/math_function_impl.h"
 
 namespace paddle {
 namespace operators {
@@ -231,7 +233,40 @@ void gemv<platform::GPUPlace, double>(const platform::DeviceContext& context,
       cuTransA, N, M, &alpha, A, N, B, 1, &beta, C, 1));
 }
 
+template <>
+void axpy<platform::GPUPlace, float>(const platform::DeviceContext& context,
+                                     const int n, const float alpha,
+                                     const float* x, float* y) {
+  PADDLE_ENFORCE(platform::dynload::cublasSaxpy(
+      reinterpret_cast<const platform::CUDADeviceContext&>(context)
+          .cublas_handle(),
+      n, &alpha, x, 1, y, 1));
+}
+
+template <>
+void axpy<platform::GPUPlace, double>(const platform::DeviceContext& context,
+                                      const int n, const double alpha,
+                                      const double* x, double* y) {
+  PADDLE_ENFORCE(platform::dynload::cublasDaxpy(
+      reinterpret_cast<const platform::CUDADeviceContext&>(context)
+          .cublas_handle(),
+      n, &alpha, x, 1, y, 1));
+}
+
 template struct SetConstant<platform::GPUPlace, float>;
+template struct SetConstant<platform::GPUPlace, double>;
+template struct SetConstant<platform::GPUPlace, int>;
+
+#define DEFINE_GPU_TRANS(RANK)                                \
+  template struct Transpose<platform::GPUPlace, float, RANK>; \
+  template struct Transpose<platform::GPUPlace, double, RANK>;
+
+DEFINE_GPU_TRANS(1);
+DEFINE_GPU_TRANS(2);
+DEFINE_GPU_TRANS(3);
+DEFINE_GPU_TRANS(4);
+DEFINE_GPU_TRANS(5);
+DEFINE_GPU_TRANS(6);
 
 struct TensorSetConstantGPU {
   TensorSetConstantGPU(const platform::DeviceContext& context,
@@ -257,6 +292,11 @@ void set_constant_with_place<platform::GPUPlace>(
                            TensorSetConstantGPU(context, tensor, value));
 }
 
+template struct RowwiseAdd<platform::GPUPlace, float>;
+template struct RowwiseAdd<platform::GPUPlace, double>;
+template struct ColwiseSum<platform::GPUPlace, float>;
+template struct ColwiseSum<platform::GPUPlace, double>;
+
 }  // namespace math
 }  // namespace operators
 }  // namespace paddle

paddle/operators/math/math_function.h

@@ -93,14 +93,21 @@ void gemv(const platform::DeviceContext& context, const bool trans_a,
           const int M, const int N, const T alpha, const T* A, const T* B,
           const T beta, T* C);
 
+template <typename Place, typename T>
+void axpy(const platform::DeviceContext& context, const int n, const T alpha,
+          const T* x, T* y);
+
+template <typename Place, typename T, int Rank>
+struct Transpose {
+  void operator()(const platform::DeviceContext& context,
+                  const framework::Tensor& in, framework::Tensor* out,
+                  const std::vector<int>& axis);
+};
+
 template <typename Place, typename T>
 struct SetConstant {
   void operator()(const platform::DeviceContext& context,
-                  framework::Tensor* tensor, T num) {
-    auto t = framework::EigenVector<T>::Flatten(*tensor);
-    t.device(*context.GetEigenDevice<Place>()) =
-        t.constant(static_cast<T>(num));
-  }
+                  framework::Tensor* tensor, T num);
 };
 
 template <typename Place>
@@ -110,6 +117,19 @@ void set_constant_with_place(const platform::DeviceContext& context,
 void set_constant(const platform::DeviceContext& context,
                   framework::Tensor* tensor, float value);
 
+template <typename Place, typename T>
+struct RowwiseAdd {
+  void operator()(const platform::DeviceContext& context,
+                  const framework::Tensor& input, const framework::Tensor& vec,
+                  framework::Tensor* output);
+};
+
+template <typename Place, typename T>
+struct ColwiseSum {
+  void operator()(const platform::DeviceContext& context,
+                  const framework::Tensor& input, framework::Tensor* vec);
+};
+
 }  // namespace math
 }  // namespace operators
 }  // namespace paddle

paddle/operators/math/math_function_impl.h

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+#pragma once
+#include "paddle/framework/data_type.h"
+#include "paddle/operators/math/math_function.h"
+
+namespace paddle {
+namespace operators {
+namespace math {
+
+template <typename Place, typename T>
+void SetConstant<Place, T>::operator()(const platform::DeviceContext& context,
+                                       framework::Tensor* tensor, T num) {
+  auto t = framework::EigenVector<T>::Flatten(*tensor);
+  t.device(*context.GetEigenDevice<Place>()) = t.constant(static_cast<T>(num));
+}
+
+template <typename Place, typename T, int Rank>
+void Transpose<Place, T, Rank>::operator()(
+    const platform::DeviceContext& context, const framework::Tensor& in,
+    framework::Tensor* out, const std::vector<int>& axis) {
+  Eigen::array<int, Rank> permute;
+  for (int i = 0; i < Rank; i++) {
+    permute[i] = axis[i];
+  }
+  auto in_dim = in.dims();
+  auto out_dim = out->dims();
+
+  auto eigen_in = framework::EigenTensor<T, Rank>::From(in);
+  auto eigen_out = framework::EigenTensor<T, Rank>::From(*out);
+  auto* dev = context.GetEigenDevice<Place>();
+  eigen_out.device(*dev) = eigen_in.shuffle(permute);
+}
+
+template <typename Place, typename T>
+void RowwiseAdd<Place, T>::operator()(const platform::DeviceContext& context,
+                                      const framework::Tensor& input,
+                                      const framework::Tensor& vector,
+                                      framework::Tensor* output) {
+  auto in_dims = input.dims();
+  auto size = input.numel() / in_dims[0];
+  PADDLE_ENFORCE_EQ(vector.numel(), size);
+  PADDLE_ENFORCE_EQ(output->dims(), in_dims);
+
+  auto in = framework::EigenMatrix<T>::From(input);
+  auto vec = framework::EigenMatrix<T>::From(vector);
+  auto out = framework::EigenMatrix<T>::From(*output);
+  Eigen::array<int, 2> shape({{1, static_cast<int>(size)}});
+  Eigen::array<int, 2> bcast({{static_cast<int>(in_dims[0]), 1}});
+  out.device(*context.GetEigenDevice<Place>()) =
+      in + vec.reshape(shape).broadcast(bcast);
+}
+
+template <typename Place, typename T>
+void ColwiseSum<Place, T>::operator()(const platform::DeviceContext& context,
+                                      const framework::Tensor& input,
+                                      framework::Tensor* vector) {
+  auto in_dims = input.dims();
+  auto size = input.numel() / in_dims[0];
+  PADDLE_ENFORCE_EQ(vector->numel(), size);
+
+  auto vec = framework::EigenMatrix<T>::From(*vector);
+  auto in = framework::EigenMatrix<T>::From(input);
+  Eigen::array<int, 2> shape({{1, static_cast<int>(size)}});
+  vec.reshape(shape).device(*context.GetEigenDevice<Place>()) =
+      in.sum(Eigen::array<int, 1>({{0}})).reshape(shape);
+}
+
+}  // namespace math
+}  // namespace operators
+}  // namespace paddle

paddle/operators/math/sequence2batch.cu

@@ -12,6 +12,7 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License. */
 
+#define EIGEN_USE_GPU
 #include "paddle/operators/math/sequence2batch.h"
 
 namespace paddle {

paddle/operators/math/sequence2batch.h

@@ -13,6 +13,7 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #pragma once
+#include "paddle/framework/eigen.h"
 #include "paddle/framework/lod_tensor.h"
 #include "paddle/framework/tensor.h"
 #include "paddle/platform/device_context.h"
@@ -21,6 +22,10 @@ namespace paddle {
 namespace operators {
 namespace math {
 
+template <typename T, int MajorType = Eigen::RowMajor,
+          typename IndexType = Eigen::DenseIndex>
+using EigenMatrix = framework::EigenMatrix<T, MajorType, IndexType>;
+
 template <typename Place, typename T>
 class CopyMatrixRowsFunctor {
  public:

paddle/operators/math/softmax.cc

@@ -13,13 +13,16 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include "paddle/operators/math/softmax.h"
+#include "paddle/operators/math/softmax_impl.h"
 
 namespace paddle {
 namespace operators {
 namespace math {
 
 template class SoftmaxFunctor<platform::CPUPlace, float>;
+template class SoftmaxFunctor<platform::CPUPlace, double>;
 template class SoftmaxGradFunctor<platform::CPUPlace, float>;
+template class SoftmaxGradFunctor<platform::CPUPlace, double>;
 
 }  // namespace math
 }  // namespace operators

paddle/operators/math/softmax.cu

@@ -15,13 +15,16 @@ limitations under the License. */
 #define EIGEN_USE_GPU
 
 #include "paddle/operators/math/softmax.h"
+#include "paddle/operators/math/softmax_impl.h"
 
 namespace paddle {
 namespace operators {
 namespace math {
 
 template class SoftmaxFunctor<platform::GPUPlace, float>;
+template class SoftmaxFunctor<platform::GPUPlace, double>;
 template class SoftmaxGradFunctor<platform::GPUPlace, float>;
+template class SoftmaxGradFunctor<platform::GPUPlace, double>;
 
 }  // namespace math
 }  // namespace operators

paddle/operators/math/softmax.h

@@ -13,60 +13,17 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #pragma once
-#include "paddle/framework/eigen.h"
-#include "paddle/framework/operator.h"
 #include "paddle/framework/tensor.h"
 
 namespace paddle {
 namespace operators {
 namespace math {
 
-template <typename T, int MajorType = Eigen::RowMajor,
-          typename IndexType = Eigen::DenseIndex>
-using EigenMatrix = framework::EigenMatrix<T, MajorType, IndexType>;
-
-template <typename T>
-struct ValueClip {
-  HOSTDEVICE T operator()(const T& x) const {
-    const T kThreshold = -64.;
-    return x < kThreshold ? kThreshold : x;
-  }
-};
-
 template <typename Place, typename T>
 class SoftmaxFunctor {
  public:
   void operator()(const platform::DeviceContext& context,
-                  const framework::Tensor* X, framework::Tensor* Y) {
-    auto logits = EigenMatrix<T>::From(*X);
-    auto softmax = EigenMatrix<T>::From(*Y);
-
-    const int kBatchDim = 0;
-    const int kClassDim = 1;
-
-    const int batch_size = logits.dimension(kBatchDim);
-    const int num_classes = logits.dimension(kClassDim);
-
-    Eigen::DSizes<int, 1> along_class(kClassDim);
-    Eigen::DSizes<int, 2> batch_by_one(batch_size, 1);
-    Eigen::DSizes<int, 2> one_by_class(1, num_classes);
-
-    auto shifted_logits = (logits -
-                           logits.maximum(along_class)
-                               .eval()
-                               .reshape(batch_by_one)
-                               .broadcast(one_by_class))
-                              .unaryExpr(ValueClip<T>());
-
-    softmax.device(*context.GetEigenDevice<Place>()) = shifted_logits.exp();
-    softmax.device(*context.GetEigenDevice<Place>()) =
-        (softmax *
-         softmax.sum(along_class)
-             .inverse()
-             .eval()
-             .reshape(batch_by_one)
-             .broadcast(one_by_class));
-  }
+                  const framework::Tensor* X, framework::Tensor* Y);
 };
 
 template <typename Place, typename T>
@@ -74,29 +31,7 @@ class SoftmaxGradFunctor {
  public:
   void operator()(const platform::DeviceContext& context,
                   const framework::Tensor* y, const framework::Tensor* y_grad,
-                  framework::Tensor* x_grad) {
-    auto softmax = EigenMatrix<T>::From(*y);
-    auto softmax_grad = EigenMatrix<T>::From(*y_grad);
-    auto logits_grad = EigenMatrix<T>::From(*x_grad);
-
-    const int kBatchDim = 0;
-    const int kClassDim = 1;
-
-    const int batch_size = softmax.dimension(kBatchDim);
-    const int num_classes = softmax.dimension(kClassDim);
-
-    Eigen::DSizes<int, 1> along_class(kClassDim);
-    Eigen::DSizes<int, 2> batch_by_one(batch_size, 1);
-    Eigen::DSizes<int, 2> one_by_class(1, num_classes);
-
-    auto dot = (softmax * softmax_grad)
-                   .sum(along_class)
-                   .eval()
-                   .reshape(batch_by_one)
-                   .broadcast(one_by_class);
-    logits_grad.device(*context.GetEigenDevice<Place>()) =
-        (softmax_grad - dot) * softmax;
-  }
+                  framework::Tensor* x_grad);
 };
 
 }  // namespace math

paddle/operators/math/softmax_impl.h

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+#pragma once
+#include "paddle/framework/eigen.h"
+#include "paddle/framework/tensor.h"
+
+namespace paddle {
+namespace operators {
+namespace math {
+
+template <typename T, int MajorType = Eigen::RowMajor,
+          typename IndexType = Eigen::DenseIndex>
+using EigenMatrix = framework::EigenMatrix<T, MajorType, IndexType>;
+
+template <typename T>
+struct ValueClip {
+  HOSTDEVICE T operator()(const T& x) const {
+    const T kThreshold = -64.;
+    return x < kThreshold ? kThreshold : x;
+  }
+};
+
+template <typename Place, typename T>
+void SoftmaxFunctor<Place, T>::operator()(
+    const platform::DeviceContext& context, const framework::Tensor* X,
+    framework::Tensor* Y) {
+  auto logits = EigenMatrix<T>::From(*X);
+  auto softmax = EigenMatrix<T>::From(*Y);
+
+  const int kBatchDim = 0;
+  const int kClassDim = 1;
+
+  const int batch_size = logits.dimension(kBatchDim);
+  const int num_classes = logits.dimension(kClassDim);
+
+  Eigen::DSizes<int, 1> along_class(kClassDim);
+  Eigen::DSizes<int, 2> batch_by_one(batch_size, 1);
+  Eigen::DSizes<int, 2> one_by_class(1, num_classes);
+
+  auto shifted_logits = (logits -
+                         logits.maximum(along_class)
+                             .eval()
+                             .reshape(batch_by_one)
+                             .broadcast(one_by_class))
+                            .unaryExpr(ValueClip<T>());
+
+  softmax.device(*context.GetEigenDevice<Place>()) = shifted_logits.exp();
+  softmax.device(*context.GetEigenDevice<Place>()) =
+      (softmax *
+       softmax.sum(along_class)
+           .inverse()
+           .eval()
+           .reshape(batch_by_one)
+           .broadcast(one_by_class));
+}
+
+template <typename Place, typename T>
+void SoftmaxGradFunctor<Place, T>::operator()(
+    const platform::DeviceContext& context, const framework::Tensor* y,
+    const framework::Tensor* y_grad, framework::Tensor* x_grad) {
+  auto softmax = EigenMatrix<T>::From(*y);
+  auto softmax_grad = EigenMatrix<T>::From(*y_grad);
+  auto logits_grad = EigenMatrix<T>::From(*x_grad);
+
+  const int kBatchDim = 0;
+  const int kClassDim = 1;
+
+  const int batch_size = softmax.dimension(kBatchDim);
+  const int num_classes = softmax.dimension(kClassDim);
+
+  Eigen::DSizes<int, 1> along_class(kClassDim);
+  Eigen::DSizes<int, 2> batch_by_one(batch_size, 1);
+  Eigen::DSizes<int, 2> one_by_class(1, num_classes);
+
+  auto dot = (softmax * softmax_grad)
+                 .sum(along_class)
+                 .eval()
+                 .reshape(batch_by_one)
+                 .broadcast(one_by_class);
+  logits_grad.device(*context.GetEigenDevice<Place>()) =
+      (softmax_grad - dot) * softmax;
+}
+
+}  // namespace math
+}  // namespace operators
+}  // namespace paddle

paddle/operators/math/vol2col.cc

@@ -28,28 +28,51 @@ template <class T>
 class Vol2ColFunctor<platform::CPUPlace, T> {
  public:
   void operator()(const platform::DeviceContext& context,
-                  const framework::Tensor& vol, framework::Tensor& col,
-                  int stride_depth, int stride_height, int stride_width,
-                  int padding_depth, int padding_height,
-                  int padding_width) const {
+                  const framework::Tensor& vol,
+                  const std::vector<int>& dilations,
+                  const std::vector<int>& strides,
+                  const std::vector<int>& paddings,
+                  framework::Tensor* col) const {
     PADDLE_ENFORCE(vol.dims().size() == 4);
-    PADDLE_ENFORCE(col.dims().size() == 7);
+    PADDLE_ENFORCE(col->dims().size() == 7);
 
     int input_channels = vol.dims()[0];
     int input_depth = vol.dims()[1];
     int input_height = vol.dims()[2];
     int input_width = vol.dims()[3];
-    int filter_depth = col.dims()[1];
-    int filter_height = col.dims()[2];
-    int filter_width = col.dims()[3];
-    int output_depth = col.dims()[4];
-    int output_height = col.dims()[5];
-    int output_width = col.dims()[6];
+    int filter_depth = col->dims()[1];
+    int filter_height = col->dims()[2];
+    int filter_width = col->dims()[3];
+    int output_depth = col->dims()[4];
+    int output_height = col->dims()[5];
+    int output_width = col->dims()[6];
     int channels_col =
         input_channels * filter_depth * filter_height * filter_width;
 
+    PADDLE_ENFORCE_EQ((input_depth + 2 * paddings[0] -
+                       ((dilations[0] * (filter_depth - 1) + 1))) /
+                              strides[0] +
+                          1,
+                      output_depth,
+                      "input_depth and output_depth are "
+                      "mismatching.");
+    PADDLE_ENFORCE_EQ((input_height + 2 * paddings[1] -
+                       ((dilations[1] * (filter_height - 1) + 1))) /
+                              strides[1] +
+                          1,
+                      output_height,
+                      "input_height and output_height are "
+                      "mismatching.");
+    PADDLE_ENFORCE_EQ((input_width + 2 * paddings[2] -
+                       ((dilations[2] * (filter_width - 1) + 1))) /
+                              strides[2] +
+                          1,
+                      output_width,
+                      "input_width and output_width are "
+                      "mismatching.");
+
     const T* vol_data = vol.data<T>();
-    T* col_data = col.data<T>();
+    T* col_data = col->data<T>();
 
     for (int c = 0; c < channels_col; ++c) {
       int w_offset = c % filter_width;
@@ -57,24 +80,23 @@ class Vol2ColFunctor<platform::CPUPlace, T> {
       int d_offset = (c / filter_width / filter_height) % filter_depth;
       int c_in = c / filter_width / filter_height / filter_depth;
       for (int d = 0; d < output_depth; ++d) {
-        int d_pad = d * stride_depth - padding_depth + d_offset;
+        int d_pad = d * strides[0] - paddings[0] + d_offset * dilations[0];
         for (int h = 0; h < output_height; ++h) {
-          int h_pad = h * stride_height - padding_height + h_offset;
+          int h_pad = h * strides[1] - paddings[1] + h_offset * dilations[1];
           for (int w = 0; w < output_width; ++w) {
-            int w_pad = w * stride_width - padding_width + w_offset;
+            int w_pad = w * strides[2] - paddings[2] + w_offset * dilations[2];
 
             int col_idx =
                 ((c * output_depth + d) * output_height + h) * output_width + w;
-            if (h_pad < 0 || h_pad >= input_height || w_pad < 0 ||
-                w_pad >= input_width || d_pad < 0 || d_pad >= input_depth) {
-              col_data[col_idx] = static_cast<T>(0);
-            } else {
             int vol_idx =
                 ((c_in * input_depth + d_pad) * input_height + h_pad) *
                     input_width +
                 w_pad;
-              col_data[col_idx] = vol_data[vol_idx];
-            }
+            col_data[col_idx] =
+                (h_pad < 0 || h_pad >= input_height || w_pad < 0 ||
+                 w_pad >= input_width || d_pad < 0 || d_pad >= input_depth)
+                    ? static_cast<T>(0)
+                    : vol_data[vol_idx];
           }
         }
       }
@@ -92,17 +114,18 @@ template <class T>
 class Col2VolFunctor<platform::CPUPlace, T> {
  public:
   void operator()(const platform::DeviceContext& context,
-                  framework::Tensor& vol, const framework::Tensor& col,
-                  int stride_depth, int stride_height, int stride_width,
-                  int padding_depth, int padding_height,
-                  int padding_width) const {
-    PADDLE_ENFORCE(vol.dims().size() == 4);
+                  const framework::Tensor& col,
+                  const std::vector<int>& dilations,
+                  const std::vector<int>& strides,
+                  const std::vector<int>& paddings,
+                  framework::Tensor* vol) const {
+    PADDLE_ENFORCE(vol->dims().size() == 4);
     PADDLE_ENFORCE(col.dims().size() == 7);
 
-    int input_channels = vol.dims()[0];
-    int input_depth = vol.dims()[1];
-    int input_height = vol.dims()[2];
-    int input_width = vol.dims()[3];
+    int input_channels = vol->dims()[0];
+    int input_depth = vol->dims()[1];
+    int input_height = vol->dims()[2];
+    int input_width = vol->dims()[3];
     int filter_depth = col.dims()[1];
     int filter_height = col.dims()[2];
     int filter_width = col.dims()[3];
@@ -112,7 +135,28 @@ class Col2VolFunctor<platform::CPUPlace, T> {
     int channels_col =
         input_channels * filter_depth * filter_height * filter_width;
 
-    T* vol_data = vol.data<T>();
+    PADDLE_ENFORCE_EQ((input_depth + 2 * paddings[0] -
+                       ((dilations[0] * (filter_depth - 1) + 1))) /
+                              strides[0] +
+                          1,
+                      output_depth,
+                      "input_depth and output_depth are "
+                      "mismatching.");
+    PADDLE_ENFORCE_EQ((input_height + 2 * paddings[1] -
+                       ((dilations[1] * (filter_height - 1) + 1))) /
+                              strides[1] +
+                          1,
+                      output_height,
+                      "input_height and output_height are "
+                      "mismatching.");
+    PADDLE_ENFORCE_EQ((input_width + 2 * paddings[2] -
+                       ((dilations[2] * (filter_width - 1) + 1))) /
+                              strides[2] +
+                          1,
+                      output_width,
+                      "input_width and output_width are "
+                      "mismatching.");
+    T* vol_data = vol->data<T>();
     const T* col_data = col.data<T>();
 
     for (int c = 0; c < channels_col; ++c) {
@@ -121,11 +165,11 @@ class Col2VolFunctor<platform::CPUPlace, T> {
       int d_offset = (c / filter_width / filter_height) % filter_depth;
       int cIm = c / filter_width / filter_height / filter_depth;
       for (int d = 0; d < output_depth; ++d) {
-        int d_pad = d * stride_depth - padding_depth + d_offset;
+        int d_pad = d * strides[0] - paddings[0] + d_offset * dilations[0];
         for (int h = 0; h < output_height; ++h) {
-          int h_pad = h * stride_height - padding_height + h_offset;
+          int h_pad = h * strides[1] - paddings[1] + h_offset * dilations[1];
           for (int w = 0; w < output_width; ++w) {
-            int w_pad = w * stride_width - padding_width + w_offset;
+            int w_pad = w * strides[2] - paddings[2] + w_offset * dilations[2];
 
             if (h_pad >= 0 && h_pad < input_height && w_pad >= 0 &&
                 w_pad < input_width && d_pad >= 0 && d_pad < input_depth) {
@@ -133,6 +177,7 @@ class Col2VolFunctor<platform::CPUPlace, T> {
                   ((cIm * input_depth + d_pad) * input_height + h_pad) *
                       input_width +
                   w_pad;
+
               int col_idx =
                   ((c * output_depth + d) * output_height + h) * output_width +
                   w;

paddle/operators/math/vol2col.cu

@@ -21,11 +21,12 @@ namespace math {
 
 template <class T>
 __global__ void vol2col(int num_kernels, const T* data_vol, int depth,
-                        int height, int width, int filter_depth,
-                        int filter_height, int filter_width, int stride_depth,
-                        int stride_height, int stride_width, int padding_depth,
-                        int padding_height, int padding_width, int output_detph,
-                        int output_height, int output_width, T* data_col) {
+                        int height, int width, int dilation_d, int dilation_h,
+                        int dilation_w, int filter_depth, int filter_height,
+                        int filter_width, int stride_depth, int stride_height,
+                        int stride_width, int padding_depth, int padding_height,
+                        int padding_width, int output_detph, int output_height,
+                        int output_width, T* data_col) {
   for (int index = blockIdx.x * blockDim.x + threadIdx.x; index < num_kernels;
        index += blockDim.x * gridDim.x) {
     int w_out = index % output_width;
@@ -44,12 +45,14 @@ __global__ void vol2col(int num_kernels, const T* data_vol, int depth,
     for (int k = 0; k < filter_depth; ++k) {
       for (int i = 0; i < filter_height; ++i) {
         for (int j = 0; j < filter_width; ++j) {
-          int d = d_in + k;
-          int h = h_in + i;
-          int w = w_in + j;
+          int d = d_in + k * dilation_d;
+          int h = h_in + i * dilation_h;
+          int w = w_in + j * dilation_w;
+          int col_idx = (k * dilation_d * height + i * dilation_h) * width +
+                        j * dilation_w;
           *data_col = (d >= 0 && d < depth && h >= 0 && h < height && w >= 0 &&
                        w < width)
-                          ? data_vol[(k * height + i) * width + j]
+                          ? data_vol[col_idx]
                           : 0;
           data_col += output_detph * output_height * output_width;
         }
@@ -68,23 +71,46 @@ template <class T>
 class Vol2ColFunctor<platform::GPUPlace, T> {
  public:
   void operator()(const platform::DeviceContext& context,
-                  const framework::Tensor& vol, framework::Tensor& col,
-                  int stride_depth, int stride_height, int stride_width,
-                  int padding_depth, int padding_height,
-                  int padding_width) const {
+                  const framework::Tensor& vol,
+                  const std::vector<int>& dilations,
+                  const std::vector<int>& strides,
+                  const std::vector<int>& paddings,
+                  framework::Tensor* col) const {
     PADDLE_ENFORCE(vol.dims().size() == 4);
-    PADDLE_ENFORCE(col.dims().size() == 7);
+    PADDLE_ENFORCE(col->dims().size() == 7);
 
     int input_channels = vol.dims()[0];
     int input_depth = vol.dims()[1];
     int input_height = vol.dims()[2];
     int input_width = vol.dims()[3];
-    int filter_depth = col.dims()[1];
-    int filter_height = col.dims()[2];
-    int filter_width = col.dims()[3];
-    int output_depth = col.dims()[4];
-    int output_height = col.dims()[5];
-    int output_width = col.dims()[6];
+    int filter_depth = col->dims()[1];
+    int filter_height = col->dims()[2];
+    int filter_width = col->dims()[3];
+    int output_depth = col->dims()[4];
+    int output_height = col->dims()[5];
+    int output_width = col->dims()[6];
+
+    PADDLE_ENFORCE_EQ((input_depth + 2 * paddings[0] -
+                       ((dilations[0] * (filter_depth - 1) + 1))) /
+                              strides[0] +
+                          1,
+                      output_depth,
+                      "input_depth and output_depth are "
+                      "Mismatching.");
+    PADDLE_ENFORCE_EQ((input_height + 2 * paddings[1] -
+                       ((dilations[1] * (filter_height - 1) + 1))) /
+                              strides[1] +
+                          1,
+                      output_height,
+                      "input_height and output_height are "
+                      "Mismatching.");
+    PADDLE_ENFORCE_EQ((input_width + 2 * paddings[2] -
+                       ((dilations[2] * (filter_width - 1) + 1))) /
+                              strides[2] +
+                          1,
+                      output_width,
+                      "input_width and output_width are "
+                      "Mismatching.");
 
     int num_outputs =
         input_channels * output_depth * output_height * output_width;
@@ -95,19 +121,25 @@ class Vol2ColFunctor<platform::GPUPlace, T> {
                  reinterpret_cast<const platform::CUDADeviceContext&>(context)
                      .stream()>>>(
         num_outputs, vol.data<T>(), input_depth, input_height, input_width,
-        filter_depth, filter_height, filter_width, stride_depth, stride_height,
-        stride_width, padding_depth, padding_height, padding_width,
-        output_depth, output_height, output_width, col.data<T>());
+        dilations[0], dilations[1], dilations[2], filter_depth, filter_height,
+        filter_width, strides[0], strides[1], strides[2], paddings[0],
+        paddings[1], paddings[2], output_depth, output_height, output_width,
+        col->data<T>());
   }
 };
 
 template <class T>
 __global__ void col2vol(int num_kernels, const T* data_col, int depth,
-                        int height, int width, int filter_depth,
-                        int filter_height, int filter_width, int stride_depth,
-                        int stride_height, int stride_width, int padding_depth,
-                        int padding_height, int padding_width, int output_detph,
-                        int output_height, int output_width, T* data_vol) {
+                        int height, int width, int dilation_d, int dilation_h,
+                        int dilation_w, int filter_depth, int filter_height,
+                        int filter_width, int stride_depth, int stride_height,
+                        int stride_width, int padding_depth, int padding_height,
+                        int padding_width, int output_detph, int output_height,
+                        int output_width, T* data_vol) {
+  const int d_filter_depth = dilation_d * (filter_depth - 1) + 1;
+  const int d_filter_height = dilation_h * (filter_height - 1) + 1;
+  const int d_filter_width = dilation_w * (filter_width - 1) + 1;
+
   for (int index = blockIdx.x * blockDim.x + threadIdx.x; index < num_kernels;
        index += blockDim.x * gridDim.x) {
     T src_val = 0;
@@ -115,35 +147,41 @@ __global__ void col2vol(int num_kernels, const T* data_col, int depth,
     int h = (index / width) % height + padding_height;
     int d = (index / width / height) % depth + padding_depth;
     int c = index / width / height / depth;
+
     // compute the start and end of the output
     int w_col_start =
-        (w < filter_width) ? 0 : (w - filter_width) / stride_width + 1;
+        (w < d_filter_width) ? 0 : (w - d_filter_width) / stride_width + 1;
     int w_col_end = min(w / stride_width + 1, output_width);
     int h_col_start =
-        (h < filter_height) ? 0 : (h - filter_height) / stride_height + 1;
+        (h < d_filter_height) ? 0 : (h - d_filter_height) / stride_height + 1;
     int h_col_end = min(h / stride_height + 1, output_height);
     int d_col_start =
-        (d < filter_depth) ? 0 : (d - filter_depth) / stride_depth + 1;
+        (d < d_filter_depth) ? 0 : (d - d_filter_depth) / stride_depth + 1;
     int d_col_end = min(d / stride_depth + 1, output_detph);
 
-    int offset = (c * filter_depth * filter_height * filter_width +
-                  d * filter_width * filter_height + h * filter_width + w) *
-                 output_detph * output_height * output_width;
-
-    int coeff_d_col =
-        (1 - stride_depth * filter_width * filter_height * output_detph) *
-        output_height * output_width;
-    int coeff_h_col =
-        (1 - stride_height * filter_width * output_detph * output_height) *
-        output_width;
-    int coeff_w_col =
-        (1 - stride_width * output_detph * output_height * output_width);
-
     for (int d_col = d_col_start; d_col < d_col_end; ++d_col) {
       for (int h_col = h_col_start; h_col < h_col_end; ++h_col) {
         for (int w_col = w_col_start; w_col < w_col_end; ++w_col) {
-          src_val += data_col[offset + d_col * coeff_d_col +
-                              h_col * coeff_h_col + w_col * coeff_w_col];
+          int d_off = (d - d_col * stride_depth);
+          int h_off = (h - h_col * stride_height);
+          int w_off = (w - w_col * stride_width);
+          if (d_off % dilation_d == 0 && h_off % dilation_h == 0 &&
+              w_off % dilation_w == 0) {
+            d_off /= dilation_d;
+            h_off /= dilation_h;
+            w_off /= dilation_w;
+
+            int data_col_index =
+                (((((c * filter_depth + d_off) * filter_height + h_off) *
+                       filter_width +
+                   w_off)));
+            data_col_index =
+                ((data_col_index * output_detph + d_col) * output_height +
+                 h_col) *
+                    output_width +
+                w_col;
+            src_val += data_col[data_col_index];
+          }
         }
       }
     }
@@ -161,17 +199,18 @@ template <class T>
 class Col2VolFunctor<platform::GPUPlace, T> {
  public:
   void operator()(const platform::DeviceContext& context,
-                  framework::Tensor& vol, const framework::Tensor& col,
-                  int stride_depth, int stride_height, int stride_width,
-                  int padding_depth, int padding_height,
-                  int padding_width) const {
-    PADDLE_ENFORCE(vol.dims().size() == 4);
+                  const framework::Tensor& col,
+                  const std::vector<int>& dilations,
+                  const std::vector<int>& strides,
+                  const std::vector<int>& paddings,
+                  framework::Tensor* vol) const {
+    PADDLE_ENFORCE(vol->dims().size() == 4);
     PADDLE_ENFORCE(col.dims().size() == 7);
 
-    int input_channels = vol.dims()[0];
-    int input_depth = vol.dims()[1];
-    int input_height = vol.dims()[2];
-    int input_width = vol.dims()[3];
+    int input_channels = vol->dims()[0];
+    int input_depth = vol->dims()[1];
+    int input_height = vol->dims()[2];
+    int input_width = vol->dims()[3];
     int filter_depth = col.dims()[1];
     int filter_height = col.dims()[2];
     int filter_width = col.dims()[3];
@@ -179,6 +218,28 @@ class Col2VolFunctor<platform::GPUPlace, T> {
     int output_height = col.dims()[5];
     int output_width = col.dims()[6];
 
+    PADDLE_ENFORCE_EQ((input_depth + 2 * paddings[0] -
+                       ((dilations[0] * (filter_depth - 1) + 1))) /
+                              strides[0] +
+                          1,
+                      output_depth,
+                      "input_depth and output_depth are "
+                      "Mismatching.");
+    PADDLE_ENFORCE_EQ((input_height + 2 * paddings[1] -
+                       ((dilations[1] * (filter_height - 1) + 1))) /
+                              strides[1] +
+                          1,
+                      output_height,
+                      "input_height and output_height are "
+                      "Mismatching.");
+    PADDLE_ENFORCE_EQ((input_width + 2 * paddings[2] -
+                       ((dilations[2] * (filter_width - 1) + 1))) /
+                              strides[2] +
+                          1,
+                      output_width,
+                      "input_width and output_width are "
+                      "Mismatching.");
+
     int num_kernels = input_channels * input_depth * input_height * input_width;
 
     const int threads = 1024;
@@ -188,9 +249,10 @@ class Col2VolFunctor<platform::GPUPlace, T> {
                  reinterpret_cast<const platform::CUDADeviceContext&>(context)
                      .stream()>>>(
         num_kernels, col.data<T>(), input_depth, input_height, input_width,
-        filter_depth, filter_height, filter_width, stride_depth, stride_height,
-        stride_width, padding_depth, padding_height, padding_width,
-        output_depth, output_height, output_width, vol.data<T>());
+        dilations[0], dilations[1], dilations[2], filter_depth, filter_height,
+        filter_width, strides[0], strides[1], strides[2], paddings[0],
+        paddings[1], paddings[2], output_depth, output_height, output_width,
+        vol->data<T>());
   }
 };
 

paddle/operators/math/vol2col.h

@@ -31,6 +31,15 @@ namespace math {
  * \param colData  Column data.
  * \param colShape The shape of colData.
  *
+ * \param dilations    dilation data.
+ * \param 3-dimension  [dilation_depth, dilation_height, dilation_width].
+ *
+ * \param strides      stride data.
+ * \param 3-dimension  [stride_depth, stride_height, stride_width].
+ *
+ * \param paddings     padding data.
+ * \param 3-dimension  [d_pad, h_pad, w_pad].
+ *
  * The shape of colData is:
  * [input_channels, filter_depth, filter_height, filter_width, output_depth,
  * output_height, output_width]
@@ -57,20 +66,22 @@ template <typename Place, typename T>
 class Vol2ColFunctor {
  public:
   void operator()(const platform::DeviceContext& context,
-                  const framework::Tensor& vol, framework::Tensor& col,
-                  int stride_depth, int stride_height, int stride_width,
-                  int padding_depth, int padding_height,
-                  int padding_width) const;
+                  const framework::Tensor& vol,
+                  const std::vector<int>& dilations,
+                  const std::vector<int>& strides,
+                  const std::vector<int>& paddings,
+                  framework::Tensor* col) const;
 };
 
 template <typename Place, typename T>
 class Col2VolFunctor {
  public:
   void operator()(const platform::DeviceContext& context,
-                  framework::Tensor& vol, const framework::Tensor& col,
-                  int stride_depth, int stride_height, int stride_width,
-                  int padding_depth, int padding_height,
-                  int padding_width) const;
+                  const framework::Tensor& col,
+                  const std::vector<int>& dilations,
+                  const std::vector<int>& strides,
+                  const std::vector<int>& paddings,
+                  framework::Tensor* vol) const;
 };
 
 }  // namespace math

paddle/operators/math/vol2col_test.cc

@@ -62,11 +62,15 @@ void testVol2col() {
   int input_height = 2;
   int input_width = 3;
   int filter_size = 2;
-  int stride = 1;
-  int padding = 0;
-  int output_depth = (input_depth - filter_size + 2 * padding) / stride + 1;
-  int output_height = (input_height - filter_size + 2 * padding) / stride + 1;
-  int output_width = (input_width - filter_size + 2 * padding) / stride + 1;
+  std::vector<int> strides({1, 1, 1});
+  std::vector<int> paddings({0, 0, 0});
+  std::vector<int> dilations({1, 1, 1});
+  int output_depth =
+      (input_depth - filter_size + 2 * paddings[0]) / strides[0] + 1;
+  int output_height =
+      (input_height - filter_size + 2 * paddings[1]) / strides[1] + 1;
+  int output_width =
+      (input_width - filter_size + 2 * paddings[2]) / strides[2] + 1;
 
   // Vol2Col test
   float* input_ptr =
@@ -85,8 +89,7 @@ void testVol2col() {
                              *place);
 
   paddle::operators::math::Vol2ColFunctor<Place, float> vol2col;
-  vol2col(*context, input, output, stride, stride, stride, padding, padding,
-          padding);
+  vol2col(*context, input, dilations, strides, paddings, &output);
 
   float vol_2_col[] = {0, 1, 1, 2, 3, 4, 4, 5, 6, 7, 7, 8, 9, 10, 10, 11};
   float* out_cfo_ptr;
@@ -111,8 +114,7 @@ void testVol2col() {
   }
 
   paddle::operators::math::Col2VolFunctor<Place, float> col2vol;
-  col2vol(*context, input, output, stride, stride, stride, padding, padding,
-          padding);
+  col2vol(*context, output, dilations, strides, paddings, &input);
 
   float* in_ptr;
   if (paddle::platform::is_cpu_place(*place)) {

paddle/operators/matmul_op.h

@@ -15,8 +15,8 @@
 #pragma once
 
 #include "paddle/framework/op_registry.h"
+#include "paddle/operators/math/math_function.h"
 #include "paddle/operators/math/matmul.h"
-#include "paddle/operators/transpose_op.h"
 
 namespace paddle {
 namespace operators {
@@ -76,7 +76,10 @@ Tensor CombineBatchAndN(const framework::ExecutionContext& context,
   if (in_dims.size() == 3) {
     output.Resize({in_dims[1], in_dims[0], in_dims[2]});
     output.mutable_data<T>(context.GetPlace());
-    EigenTranspose<Place, T, 3>(context, input, output, {1, 0, 2});
+    std::vector<int> axis = {1, 0, 2};
+    math::Transpose<Place, T, 3> trans;
+    trans(context.device_context(), input, &output, axis);
+    std::vector<int64_t> out_dims = {in_dims[1], in_dims[0] * in_dims[2]};
     output.Resize({in_dims[1], in_dims[0] * in_dims[2]});
   } else {
     output.ShareDataWith(input);

paddle/operators/pool_with_index_op.h

@@ -81,22 +81,21 @@ class MaxPoolWithIndexGradKernel : public framework::OpKernel<T> {
 
     if (in_x_grad) {
       in_x_grad->mutable_data<T>(context.GetPlace());
-      auto temp = framework::EigenVector<T>::Flatten(*in_x_grad);
-      temp.device(context.GetEigenDevice<Place>()) =
-          temp.constant(static_cast<T>(0));
+      auto& device_ctx = context.device_context();
+      math::set_constant(device_ctx, in_x_grad, 0);
 
       switch (ksize.size()) {
         case 2: {
           paddle::operators::math::MaxPool2dWithIndexGradFunctor<Place, T>
               pool2d_backward;
-          pool2d_backward(context.device_context(), *out_grad, *mask, ksize,
-                          strides, paddings, in_x_grad);
+          pool2d_backward(device_ctx, *out_grad, *mask, ksize, strides,
+                          paddings, in_x_grad);
         } break;
         case 3: {
           paddle::operators::math::MaxPool3dWithIndexGradFunctor<Place, T>
               pool3d_backward;
-          pool3d_backward(context.device_context(), *out_grad, *mask, ksize,
-                          strides, paddings, in_x_grad);
+          pool3d_backward(device_ctx, *out_grad, *mask, ksize, strides,
+                          paddings, in_x_grad);
         } break;
         default: { PADDLE_THROW("Pool op only supports 2D and 3D input."); }
       }

paddle/operators/sequence_conv_op.cu → paddle/operators/sequence_conv_op.cu.cc

@@ -12,8 +12,6 @@
    See the License for the specific language governing permissions and
    limitations under the License. */
 
-#define EIGEN_USE_GPU
-
 #include "paddle/operators/sequence_conv_op.h"
 
 namespace ops = paddle::operators;

paddle/operators/sequence_conv_op.h

@@ -13,7 +13,6 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #pragma once
-#include "paddle/framework/eigen.h"
 #include "paddle/framework/op_registry.h"
 #include "paddle/operators/math/context_project.h"
 #include "paddle/operators/math/math_function.h"
@@ -62,9 +61,9 @@ class SequenceConvKernel : public framework::OpKernel<T> {
 
     math::ContextProjectFunctor<Place, T> seq_project_functor;
 
-    seq_project_functor(context.device_context(), *in, *padding_data, col,
+    seq_project_functor(context.device_context(), *in, *padding_data,
                         padding_trainable, context_start, context_length,
-                        context_stride, up_pad, down_pad);
+                        context_stride, up_pad, down_pad, &col);
 
     math::matmul<Place, T>(context.device_context(), col, false, filter, false,
                            static_cast<T>(1.0), out, static_cast<T>(0.0));
@@ -117,10 +116,10 @@ class SequenceConvGradKernel : public framework::OpKernel<T> {
       in_g->set_lod(in->lod());
       set_zero(context.device_context(), in_g, static_cast<T>(0));
 
-      seq_project_grad_functor(context.device_context(), *in_g, *padding_data_g,
-                               col, padding_trainable, context_start,
-                               context_length, context_stride, up_pad, down_pad,
-                               true, false);
+      seq_project_grad_functor(context.device_context(), *in_g,
+                               padding_trainable, context_start, context_length,
+                               context_stride, up_pad, down_pad, false, true,
+                               padding_data_g, &col);
     }
 
     if (padding_trainable && padding_data_g) {
@@ -129,9 +128,9 @@ class SequenceConvGradKernel : public framework::OpKernel<T> {
 
       LoDTensor* input = const_cast<LoDTensor*>(in);
       seq_project_grad_functor(context.device_context(), *input,
-                               *padding_data_g, col, padding_trainable,
-                               context_start, context_length, context_stride,
-                               up_pad, down_pad, false, true);
+                               padding_trainable, context_start, context_length,
+                               context_stride, up_pad, down_pad, true, false,
+                               padding_data_g, &col);
     }
 
     if (filter_g) {
@@ -146,9 +145,9 @@ class SequenceConvGradKernel : public framework::OpKernel<T> {
         padding_data = context.Input<Tensor>("PaddingData");
       }
 
-      seq_project_functor(context.device_context(), *in, *padding_data, col,
+      seq_project_functor(context.device_context(), *in, *padding_data,
                           padding_trainable, context_start, context_length,
-                          context_stride, up_pad, down_pad);
+                          context_stride, up_pad, down_pad, &col);
 
       math::matmul<Place, T>(context.device_context(), col, true, out_grad,
                              false, T(1.0), &filter_grad, T(1.0));

paddle/operators/sgd_op.cu

@@ -20,11 +20,11 @@ namespace paddle {
 namespace operators {
 
 namespace {
-template <typename T>
+template <typename T, int block_size>
 __global__ void SparseSGDFunctorKernel(const T* selected_rows,
                                        const int64_t* rows,
                                        const T* learning_rate, T* tensor_out,
-                                       int64_t row_numel, int block_size) {
+                                       int64_t row_numel) {
   const int ty = blockIdx.y;
   int tid = threadIdx.x;
 
@@ -59,14 +59,15 @@ struct SparseSGDFunctor<platform::GPUPlace, T> {
     auto* in_data = in_value.data<T>();
     auto* out_data = output->data<T>();
 
-    int block_size = 256;
+    const int block_size = 256;
     dim3 threads(block_size, 1);
     dim3 grid(1, in_rows.size());
     SparseSGDFunctorKernel<
-        T><<<grid, threads, 0,
+        T, 256><<<grid, threads, 0,
                   reinterpret_cast<const platform::CUDADeviceContext&>(context)
-                 .stream()>>>(in_data, in_rows.data(), learning_rate.data<T>(),
-                              out_data, in_row_numel, block_size);
+                      .stream()>>>(in_data, in_rows.data(),
+                                   learning_rate.data<T>(), out_data,
+                                   in_row_numel);
   }
 };
 

paddle/operators/softmax_with_cross_entropy_op.cc

@@ -14,7 +14,6 @@ limitations under the License. */
 
 #include "paddle/operators/softmax_with_cross_entropy_op.h"
 #include <paddle/function/TensorType.h>
-#include <iostream>
 
 namespace paddle {
 namespace operators {

paddle/operators/sum_op.cc

@@ -12,7 +12,6 @@ limitations under the License. */
 #include "paddle/operators/sum_op.h"
 #include <vector>
 #include "paddle/framework/var_type_inference.h"
-#include "paddle/operators/net_op.h"
 
 namespace paddle {
 namespace operators {

paddle/operators/transpose_op.h

@@ -14,61 +14,58 @@
 
 #pragma once
 
-#include "paddle/framework/eigen.h"
 #include "paddle/framework/op_registry.h"
+#include "paddle/operators/math/math_function.h"
 
 namespace paddle {
 namespace operators {
 
-template <typename Place, typename T, int Rank>
-void EigenTranspose(const framework::ExecutionContext& context,
-                    const framework::Tensor& in, framework::Tensor& out,
-                    std::vector<int> axis) {
-  Eigen::array<int, Rank> permute;
-  for (int i = 0; i < Rank; i++) {
-    permute[i] = axis[i];
-  }
-  auto in_dim = in.dims();
-  auto out_dim = out.dims();
-
-  auto eigen_in = framework::EigenTensor<T, Rank>::From(in);
-  auto eigen_out = framework::EigenTensor<T, Rank>::From(out);
-  auto& dev = context.GetEigenDevice<Place>();
-  eigen_out.device(dev) = eigen_in.shuffle(permute);
-}
-
 template <typename Place, typename T>
-class TransposeKernel : public framework::OpKernel<T> {
- public:
-  void Compute(const framework::ExecutionContext& context) const override {
-    auto* x = context.Input<framework::Tensor>("X");
-    auto* out = context.Output<framework::Tensor>("Out");
-    out->mutable_data<T>(context.GetPlace());
-
-    std::vector<int> axis = context.Attr<std::vector<int>>("axis");
-    int ndims = axis.size();
-    switch (ndims) {
+inline void TransCompute(const int dim, const platform::DeviceContext& dev_ctx,
+                         const framework::Tensor& in, framework::Tensor* out,
+                         const std::vector<int>& axis) {
+  switch (dim) {
     case 1:
-        EigenTranspose<Place, T, 1>(context, *x, *out, axis);
+      math::Transpose<Place, T, 1> trans1;
+      trans1(dev_ctx, in, out, axis);
       break;
     case 2:
-        EigenTranspose<Place, T, 2>(context, *x, *out, axis);
+      math::Transpose<Place, T, 2> trans2;
+      trans2(dev_ctx, in, out, axis);
       break;
     case 3:
-        EigenTranspose<Place, T, 3>(context, *x, *out, axis);
+      math::Transpose<Place, T, 3> trans3;
+      trans3(dev_ctx, in, out, axis);
       break;
     case 4:
-        EigenTranspose<Place, T, 4>(context, *x, *out, axis);
+      math::Transpose<Place, T, 4> trans4;
+      trans4(dev_ctx, in, out, axis);
       break;
     case 5:
-        EigenTranspose<Place, T, 5>(context, *x, *out, axis);
+      math::Transpose<Place, T, 5> trans5;
+      trans5(dev_ctx, in, out, axis);
       break;
     case 6:
-        EigenTranspose<Place, T, 6>(context, *x, *out, axis);
+      math::Transpose<Place, T, 6> trans6;
+      trans6(dev_ctx, in, out, axis);
       break;
     default:
       PADDLE_THROW("Tensors with rank at most 6 are supported");
   }
+}
+
+template <typename Place, typename T>
+class TransposeKernel : public framework::OpKernel<T> {
+ public:
+  void Compute(const framework::ExecutionContext& context) const override {
+    auto* x = context.Input<framework::Tensor>("X");
+    auto* out = context.Output<framework::Tensor>("Out");
+    out->mutable_data<T>(context.GetPlace());
+
+    std::vector<int> axis = context.Attr<std::vector<int>>("axis");
+    int ndims = axis.size();
+    auto& dev_ctx = context.device_context();
+    TransCompute<Place, T>(ndims, dev_ctx, *x, out, axis);
   }
 };
 
@@ -80,9 +77,9 @@ class TransposeGradKernel : public framework::OpKernel<T> {
         context.Input<framework::Tensor>(framework::GradVarName("Out"));
     auto* x_grad =
         context.Output<framework::Tensor>(framework::GradVarName("X"));
-    if (x_grad) {
-      x_grad->mutable_data<T>(context.GetPlace());
+    if (!x_grad) return;
 
+    x_grad->mutable_data<T>(context.GetPlace());
     std::vector<int> axis = context.Attr<std::vector<int>>("axis");
     std::vector<int> reversed_axis(axis);
 
@@ -91,36 +88,8 @@ class TransposeGradKernel : public framework::OpKernel<T> {
     }
 
     int ndims = axis.size();
-
-      switch (ndims) {
-        case 1:
-          EigenTranspose<Place, T, 1>(context, *out_grad, *x_grad,
-                                      reversed_axis);
-          break;
-        case 2:
-          EigenTranspose<Place, T, 2>(context, *out_grad, *x_grad,
-                                      reversed_axis);
-          break;
-        case 3:
-          EigenTranspose<Place, T, 3>(context, *out_grad, *x_grad,
-                                      reversed_axis);
-          break;
-        case 4:
-          EigenTranspose<Place, T, 4>(context, *out_grad, *x_grad,
-                                      reversed_axis);
-          break;
-        case 5:
-          EigenTranspose<Place, T, 5>(context, *out_grad, *x_grad,
-                                      reversed_axis);
-          break;
-        case 6:
-          EigenTranspose<Place, T, 6>(context, *out_grad, *x_grad,
-                                      reversed_axis);
-          break;
-        default:
-          PADDLE_THROW("Tensors with rank at most 6 are supported");
-      }
-    }
+    auto& dev_ctx = context.device_context();
+    TransCompute<Place, T>(ndims, dev_ctx, *out_grad, x_grad, reversed_axis);
   }
 };
 

paddle/platform/dynload/cublas.h

@@ -62,6 +62,8 @@ extern void *cublas_dso_handle;
   DECLARE_DYNAMIC_LOAD_CUBLAS_WRAP(__name)
 
 #define CUBLAS_BLAS_ROUTINE_EACH(__macro) \
+  __macro(cublasSaxpy_v2);                \
+  __macro(cublasDaxpy_v2);                \
   __macro(cublasSgemv_v2);                \
   __macro(cublasDgemv_v2);                \
   __macro(cublasSgemm_v2);                \

paddle/platform/gpu_info.cc

@@ -109,5 +109,10 @@ void GpuMemcpyPeer(void *dst, int dst_device, const void *src, int src_device,
       cudaMemcpyPeerAsync(dst, dst_device, src, src_device, count, stream),
       "cudaMemcpyPeerAsync failed in paddle::platform::GpuMemcpyPeer");
 }
+
+void GpuMemsetAsync(void *dst, int value, size_t count, cudaStream_t stream) {
+  PADDLE_ENFORCE(cudaMemsetAsync(dst, value, count, stream),
+                 "cudaMemsetAsync failed in paddle::platform::GpuMemsetAsync");
+}
 }  // namespace platform
 }  // namespace paddle

paddle/platform/gpu_info.h

@@ -60,6 +60,9 @@ void GpuMemcpySync(void *dst, const void *src, size_t count,
 void GpuMemcpyPeer(void *dst, int dst_device, const void *src, int src_device,
                    size_t count, cudaStream_t stream);
 
+//! Set memory dst with value count size asynchronously
+void GpuMemsetAsync(void *dst, int value, size_t count, cudaStream_t stream);
+
 }  // namespace platform
 }  // namespace paddle
 

python/paddle/v2/__init__.py

@@ -33,7 +33,6 @@ import networks
 import minibatch
 import plot
 import image
-import model
 import paddle.trainer.config_parser as cp
 
 __all__ = [
@@ -58,7 +57,6 @@ __all__ = [
     'evaluator',
     'image',
     'master',
-    'model',
 ]
 
 cp.begin_parse()

python/paddle/v2/fluid/io.py

@@ -165,7 +165,7 @@ def save_inference_model(dirname,
     :param target_vars: Variables from which we can get inference results.
     :param executor: executor that save inference model
     :param main_program: original program, which will be pruned to build the inference model.
-    Default g_program.
+    Default g_main_program.
 
     :return: None
     """
@@ -234,3 +234,35 @@ def load_inference_model(dirname, executor):
     fetch_vars = [program.global_block().var(name) for name in fetch_var_names]
 
     return [program, feed_var_names, fetch_vars]
+
+
+def get_parameter_value(para, executor):
+    """
+    Get the LoDTensor for the parameter
+
+    :param executor: executor for retrieving the value
+    :param para: the given parameter
+    :return: the LoDTensor for the parameter
+    """
+    assert is_parameter(para)
+
+    get_program = Program()
+    block = get_program.global_block()
+    new_var = _clone_var_in_block_(block, para)
+    return executor.run(get_program, feed={}, fetch_list=[new_var])[0]
+
+
+def get_parameter_value_by_name(name, executor, program=None):
+    """
+    Get the LoDTensor for paramter with the given name
+
+    :param executor: executor for retrieving the value
+    :param name: the name of the parameter
+    :param program: the program where the variable is found
+    Default g_main_program.
+    :return: the LoDTensor for the variable
+    """
+    if program is None:
+        program = g_main_program
+    var = program.global_block().var(name)
+    return get_parameter_value(var, executor)

python/paddle/v2/fluid/layer_helper.py

@@ -72,7 +72,7 @@ class LayerHelper(object):
 
     @property
     def bias_attr(self):
-        default = {'name': None, 'initializer': XavierInitializer()}
+        default = {'name': None, 'initializer': ConstantInitializer()}
         bias_attr = self.kwargs.get('bias_attr', None)
         if bias_attr is None:
             bias_attr = default
@@ -149,24 +149,19 @@ class LayerHelper(object):
             persistable=True,
             initializer=initializer)
 
-    def append_bias_op(self, input_var, num_flatten_dims=None):
+    def append_bias_op(self, input_var, dim_start=1, dim_end=None):
         """
         Append bias operator and return its output. If the user does not set
         bias_attr, append_bias_op will return input_var
 
         :param input_var: the input variable. The len(input_var.shape) is larger
         or equal than 2.
-        :param num_flatten_dims: The input tensor will be flatten as a matrix 
-        when adding bias.
-        `matrix.shape = product(input_var.shape[0:num_flatten_dims]), product(
-                input_var.shape[num_flatten_dims:])`
+        :param dim_start:
+        :param dim_end: the shape of the bias will be
+        input_var.shape[dim_start:dim_end]. The bias is broadcasted to other
+        dimensions and added to input_var to get the output
         """
-        if num_flatten_dims is None:
-            num_flatten_dims = self.kwargs.get('num_flatten_dims', None)
-            if num_flatten_dims is None:
-                num_flatten_dims = 1
-
-        size = list(input_var.shape[num_flatten_dims:])
+        size = list(input_var.shape[dim_start:dim_end])
         bias_attr = self.bias_attr
         if not bias_attr:
             return input_var
@@ -178,7 +173,8 @@ class LayerHelper(object):
             type='elementwise_add',
             inputs={'X': [input_var],
                     'Y': [b]},
-            outputs={'Out': [tmp]})
+            outputs={'Out': [tmp]},
+            attrs={'axis': dim_start})
         return tmp
 
     def append_activation(self, input_var):

python/paddle/v2/fluid/layers.py

@@ -694,7 +694,7 @@ def conv2d(input,
                'paddings': padding,
                'groups': groups})
 
-    pre_act = helper.append_bias_op(pre_bias, 1)
+    pre_act = helper.append_bias_op(pre_bias, dim_start=1, dim_end=2)
 
     return helper.append_activation(pre_act)
 

python/paddle/v2/fluid/tests/test_adagrad_op.py

 import unittest
 import numpy as np
+import paddle.v2.fluid.core as core
+from paddle.v2.fluid.op import Operator
 from op_test import OpTest
+import math
 
 
 class TestAdagradOp1(OpTest):
@@ -65,5 +68,110 @@ class TestAdagradOp2(OpTest):
         self.check_output()
 
 
+class TestSparseAdagradOp(unittest.TestCase):
+    def check_with_place(self, place):
+        scope = core.Scope()
+
+        # create and initialize Grad Variable   
+        height = 10
+        rows = [0, 4, 7, 4]
+        row_numel = 12
+
+        grad_selected_rows = scope.var('Grad').get_selected_rows()
+        grad_selected_rows.set_height(height)
+        grad_selected_rows.set_rows(rows)
+        np_array = np.ones((len(rows), row_numel)).astype("float32")
+        np_array[0, 0] = 2.0
+        np_array[2, 8] = 4.0
+
+        grad_tensor = grad_selected_rows.get_tensor()
+        grad_tensor.set(np_array, place)
+
+        # create and initialize Param Variable
+        param = scope.var('Param').get_tensor()
+        param_array = np.full((height, row_numel), 5.0).astype("float32")
+        param.set(param_array, place)
+
+        # create and initialize LeraningRate Variable
+        lr = scope.var('LearningRate').get_tensor()
+        lr_array = np.full((1), 2.0).astype("float32")
+        lr.set(lr_array, place)
+
+        # create and initialize moment Variable
+        moment = scope.var('Moment').get_tensor()
+        moment_np_array = np.full((height, row_numel), 2.0).astype("float32")
+        moment.set(moment_np_array, place)
+
+        # create and run sgd operator
+        adagrad_op = Operator(
+            "adagrad",
+            Param='Param',
+            Grad='Grad',
+            ParamOut='Param',
+            Moment='Moment',
+            MomentOut='Moment',
+            LearningRate='LearningRate',
+            epsilon=2.0)
+
+        ctx = core.DeviceContext.create(place)
+        adagrad_op.run(scope, ctx)
+
+        # get and compare moment result
+        moment_result_array = np.array(moment)
+
+        self.assertAlmostEqual(6.0, moment_result_array[rows[0], 0])
+        self.assertAlmostEqual(3.0, moment_result_array[rows[0], 2])
+        self.assertAlmostEqual(2.0, moment_result_array[1, 0])
+        # 2.0 + (1.0 + 1.0)^2
+        self.assertAlmostEqual(6.0, moment_result_array[rows[1], 10])
+        self.assertAlmostEqual(6.0, moment_result_array[rows[3], 4])
+
+        self.assertAlmostEqual(2.0, moment_result_array[5, 8])
+        self.assertAlmostEqual(3.0, moment_result_array[rows[2], 1])
+        self.assertAlmostEqual(18.0, moment_result_array[rows[2], 8])
+
+        # get and compare param result
+        result_array = np.array(param)
+
+        def get_out(param, lr, grad, m, epsilon):
+            return param - lr * grad / (math.sqrt(m) + epsilon)
+
+        self.assertAlmostEqual(
+            get_out(5.0, 2.0, 2.0, 6.0, 2.0),
+            result_array[rows[0], 0],
+            places=5)
+        self.assertAlmostEqual(
+            get_out(5.0, 2.0, 1.0, 3.0, 2.0),
+            result_array[rows[0], 2],
+            places=5)
+        self.assertAlmostEqual(
+            get_out(5.0, 2.0, 0.0, 2.0, 2.0), result_array[1, 0], places=5)
+
+        # grad_merge = 1.0 + 1.0
+        # m = 6.0
+        self.assertAlmostEqual(
+            get_out(5.0, 2.0, 2.0, 6.0, 2.0),
+            result_array[rows[1], 10],
+            places=5)
+
+        self.assertAlmostEqual(
+            get_out(5.0, 2.0, 0.0, 2.0, 2.0), result_array[5, 8], places=5)
+        self.assertAlmostEqual(
+            get_out(5.0, 2.0, 1.0, 3.0, 2.0),
+            result_array[rows[2], 1],
+            places=5)
+        self.assertAlmostEqual(
+            get_out(5.0, 2.0, 4.0, 18.0, 2.0),
+            result_array[rows[2], 8],
+            places=5)
+
+    def test_sparse_adagrad(self):
+        places = [core.CPUPlace()]
+        if core.is_compile_gpu():
+            places.append(core.GPUPlace(0))
+        for place in places:
+            self.check_with_place(place)
+
+
 if __name__ == "__main__":
     unittest.main()

python/paddle/v2/fluid/tests/test_parameter.py

 import unittest
 from paddle.v2.fluid.framework import g_main_program
 import paddle.v2.fluid.core as core
+from paddle.v2.fluid.executor import Executor
+import paddle.v2.fluid.io as io
+from paddle.v2.fluid.initializer import ConstantInitializer
+import numpy as np
 
 
 class TestParameter(unittest.TestCase):
     def test_param(self):
-        b = g_main_program.create_block()
+        shape = [784, 100]
+        val = 1.0625
+        b = g_main_program.global_block()
         param = b.create_parameter(
             name='fc.w',
-            shape=[784, 100],
+            shape=shape,
             dtype='float32',
-            initialize_attr={
-                'type': 'uniform_random',
-                'seed': 13,
-                'min': -5.0,
-                'max': 5.0
-            })
+            initializer=ConstantInitializer(val))
         self.assertIsNotNone(param)
         self.assertEqual('fc.w', param.name)
         self.assertEqual((784, 100), param.shape)
         self.assertEqual(core.DataType.FP32, param.data_type)
         self.assertEqual(0, param.block.idx)
+        exe = Executor(core.CPUPlace())
+        p = exe.run(g_main_program, fetch_list=[param])[0]
+        self.assertTrue(np.allclose(np.array(p), np.ones(shape) * val))
+        p = io.get_parameter_value_by_name('fc.w', exe, g_main_program)
+        self.assertTrue(np.allclose(np.array(p), np.ones(shape) * val))
 
 
 if __name__ == '__main__':

python/paddle/v2/framework/tests/test_beam_search_op.py

+import logging
+from paddle.v2.framework.op import Operator, DynamicRecurrentOp
+import paddle.v2.framework.core as core
+import unittest
+import numpy as np
+
+
+def create_tensor(scope, name, np_data):
+    tensor = scope.var(name).get_tensor()
+    tensor.set(np_data, core.CPUPlace())
+    return tensor
+
+
+class BeamSearchOpTester(unittest.TestCase):
+    def setUp(self):
+        self.scope = core.Scope()
+        self.ctx = core.DeviceContext.create(core.CPUPlace())
+        self._create_ids()
+        self._create_scores()
+        self._create_pre_ids()
+        self.scope.var('selected_ids')
+        self.scope.var('selected_scores')
+
+    def test_run(self):
+        op = Operator(
+            'beam_search',
+            pre_ids="pre_ids",
+            ids='ids',
+            scores='scores',
+            selected_ids='selected_ids',
+            selected_scores='selected_scores',
+            level=0,
+            beam_size=2,
+            end_id=0, )
+        op.run(self.scope, self.ctx)
+        selected_ids = self.scope.find_var("selected_ids").get_tensor()
+        print 'selected_ids', np.array(selected_ids)
+        print 'lod', selected_ids.lod()
+
+    def _create_pre_ids(self):
+        np_data = np.array([[1, 2, 3, 4]], dtype='int32')
+        tensor = create_tensor(self.scope, "pre_ids", np_data)
+
+    def _create_ids(self):
+        self.lod = [[0, 1, 4], [0, 1, 2, 3, 4]]
+        np_data = np.array(
+            [[4, 2, 5], [2, 1, 3], [3, 5, 2], [8, 2, 1]], dtype='int32')
+        tensor = create_tensor(self.scope, "ids", np_data)
+        tensor.set_lod(self.lod)
+
+    def _create_scores(self):
+        np_data = np.array(
+            [
+                [0.5, 0.3, 0.2],
+                [0.6, 0.3, 0.1],
+                [0.9, 0.5, 0.1],
+                [0.7, 0.5, 0.1],
+            ],
+            dtype='float32')
+        tensor = create_tensor(self.scope, "scores", np_data)
+        tensor.set_lod(self.lod)
+
+
+if __name__ == '__main__':
+    unittest.main()