Merge branch 'develop' into core_refine_inference

CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -60,6 +60,7 @@ option(USE_NNPACK       "Compile PaddlePaddle with NNPACK library"      OFF)
 option(WITH_DISTRIBUTE  "Compile with grpc distributed support"         OFF)
 option(USE_EIGEN_FOR_BLAS   "Use matrix multiplication in Eigen"        OFF)
 option(WITH_ARM_FP16    "Use half precision support on armv8.2-a cpu"   OFF)
+option(WITH_FAST_BUNDLE_TEST    "Bundle tests that can be run in a single process together to reduce launch overhead"   ON)
 
 # CMAKE_BUILD_TYPE
 if(NOT CMAKE_BUILD_TYPE)
@@ -141,7 +142,6 @@ include(external/boost)     # download boost
 include(external/any)       # download libn::any
 include(external/eigen)     # download eigen3
 include(external/pybind11)  # download pybind11
-include(external/nccl)
 include(external/cares)
 include(external/grpc)
 

Dockerfile

@@ -22,7 +22,8 @@ COPY ./paddle/scripts/docker/root/ /root/
 
 RUN apt-get update && \
     apt-get install -y \
-    git python-pip python-dev openssh-server bison libnccl-dev \
+    git python-pip python-dev openssh-server bison \
+    libnccl2=2.1.2-1+cuda8.0 libnccl-dev=2.1.2-1+cuda8.0 \
     wget unzip unrar tar xz-utils bzip2 gzip coreutils ntp \
     curl sed grep graphviz libjpeg-dev zlib1g-dev  \
     python-matplotlib gcc-4.8 g++-4.8 \

LICENSE

@@ -188,7 +188,7 @@ Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+   Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

benchmark/cluster/vgg16/README.md

@@ -8,23 +8,24 @@
 - cpu MHz		: 2101.000
 - cache size	: 20480 KB
 
+### Blas settings
+
+Setting environment variable: `MKL_NUM_THREADS=1`.
+
 ### Single Node Single Thread
 
-- PServer Count: 10
-- Trainer Count: 20
 - Metrics: samples / sec
 
 | Batch Size | 32 | 64 | 128 | 256 |
 | -- | -- | -- | -- | -- |
 | PaddlePaddle Fluid | 15.44 | 16.32 | 16.74 | 16.79 |
 | PaddlePaddle v2 | 15.97 | 17.04 | 17.60 | 17.83 |
-| TensorFlow | - | - | - | - |
+| TensorFlow | 9.09 | 9.10 | 9.24 | 8.66 |
 
 ### Different Batch Size
 
 - PServer Count: 10
 - Trainer Count: 20
-- Per trainer CPU Core: 1
 - Metrics: samples / sec
 
 | Batch Size | 32 | 64 | 128 | 256 |

benchmark/cluster/vgg16/vgg16_fluid.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/cluster/vgg16/vgg16_v2.py

-#  Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#  Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 #Licensed under the Apache License, Version 2.0 (the "License");
 #you may not use this file except in compliance with the License.

benchmark/paddle/image/alexnet.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/paddle/image/provider.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/paddle/rnn/imdb.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/paddle/rnn/provider.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/tensorflow/image/alexnet.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/tensorflow/image/alexnet_multi_gpu.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/tensorflow/image/googlenet.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/tensorflow/image/googlenet_multi_gpu.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/tensorflow/image/smallnet_mnist_cifar.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

benchmark/tensorflow/rnn/reader.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/configure.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/cross_compiling/android.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/cross_compiling/host.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/cross_compiling/ios.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/cross_compiling/raspberry_pi.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/boost.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,9 +15,16 @@
 include(ExternalProject)
 
 set(BOOST_PROJECT       "extern_boost")
+# To release PaddlePaddle as a pip package, we have to follow the
+# manylinux1 standard, which features as old Linux kernels and
+# compilers as possible and recommends CentOS 5. Indeed, the earliest
+# CentOS version that works with NVIDIA CUDA is CentOS 6.  And a new
+# version of boost, say, 1.66.0, doesn't build on CentOS 6.  We
+# checked that the devtools package of CentOS 6 installs boost 1.41.0.
+# So we use 1.41.0 here.
 set(BOOST_VER           "1.41.0")
 set(BOOST_TAR           "boost_1_41_0")
-set(BOOST_URL           "http://sourceforge.net/projects/boost/files/boost/${BOOST_VER}/${BOOST_TAR}.tar.gz")
+set(BOOST_URL           "http://paddlepaddledeps.s3-website-us-west-1.amazonaws.com/${BOOST_TAR}.tar.gz")
 set(BOOST_SOURCES_DIR ${THIRD_PARTY_PATH}/boost)
 set(BOOST_DOWNLOAD_DIR  "${BOOST_SOURCES_DIR}/src/${BOOST_PROJECT}")
 set(BOOST_INCLUDE_DIR "${BOOST_DOWNLOAD_DIR}/${BOOST_TAR}" CACHE PATH "boost include directory." FORCE)

cmake/external/cares.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/gflags.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/glog.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/grpc.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/gtest.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/mkldnn.cmake

-# Copyright (c) 2017 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2017 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -56,6 +56,7 @@ ExternalProject_Add(
     PREFIX              ${MKLDNN_SOURCES_DIR}
     UPDATE_COMMAND      ""
     CMAKE_ARGS          -DCMAKE_INSTALL_PREFIX=${MKLDNN_INSTALL_DIR}
+    CMAKE_ARGS          -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} 
     CMAKE_ARGS          -DMKLROOT=${MKLML_ROOT}
     CMAKE_ARGS          -DCMAKE_C_FLAGS=${MKLDNN_CFLAG}
     CMAKE_ARGS          -DCMAKE_CXX_FLAGS=${MKLDNN_CXXFLAG}

cmake/external/mklml.cmake

-# Copyright (c) 2017 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2017 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/nccl.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/openblas.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/protobuf.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/pybind11.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/python.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/swig.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/warpctc.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/external/zlib.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/generic.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/make_resource.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

cmake/system.cmake

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 # 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/api/v2/fluid/data_feeder.rst → doc/api/fluid/data_feeder.rst

@@ -8,7 +8,7 @@ data_feeder
 DataFeeder
 ----------
 
-..  autoclass:: paddle.v2.fluid.data_feeder.DataFeeder
+..  autoclass:: paddle.fluid.data_feeder.DataFeeder
     :members:
     :noindex:
 

doc/api/v2/fluid/evaluator.rst → doc/api/fluid/evaluator.rst

@@ -8,14 +8,14 @@ evaluator
 Accuracy
 --------
 
-..  autoclass:: paddle.v2.fluid.evaluator.Accuracy
+..  autoclass:: paddle.fluid.evaluator.Accuracy
     :members:
     :noindex:
 
 ChunkEvaluator
 --------------
 
-..  autoclass:: paddle.v2.fluid.evaluator.ChunkEvaluator
+..  autoclass:: paddle.fluid.evaluator.ChunkEvaluator
     :members:
     :noindex:
 

doc/api/v2/fluid/executor.rst → doc/api/fluid/executor.rst

@@ -8,25 +8,25 @@ executor
 Executor
 --------
 
-..  autoclass:: paddle.v2.fluid.executor.Executor
+..  autoclass:: paddle.fluid.executor.Executor
     :members:
     :noindex:
 
 global_scope
 ------------
 
-..  autofunction:: paddle.v2.fluid.executor.global_scope
+..  autofunction:: paddle.fluid.executor.global_scope
     :noindex:
 
 scope_guard
 -----------
 
-..  autofunction:: paddle.v2.fluid.executor.scope_guard
+..  autofunction:: paddle.fluid.executor.scope_guard
     :noindex:
 
 switch_scope
 ------------
 
-..  autofunction:: paddle.v2.fluid.executor.switch_scope
+..  autofunction:: paddle.fluid.executor.switch_scope
     :noindex:
 

doc/api/v2/fluid/gen_doc.py → doc/api/fluid/gen_doc.py

@@ -17,7 +17,7 @@ import argparse
 import sys
 import types
 
-import paddle.v2.fluid as fluid
+import paddle.fluid as fluid
 
 
 def parse_arg():
@@ -70,7 +70,7 @@ class DocGenerator(object):
 
     def print_class(self, name):
         self._print_header_(name, dot='-', is_title=False)
-        self.stream.write('''..  autoclass:: paddle.v2.fluid.{0}.{1}
+        self.stream.write('''..  autoclass:: paddle.fluid.{0}.{1}
     :members:
     :noindex:
 
@@ -78,7 +78,7 @@ class DocGenerator(object):
 
     def print_method(self, name):
         self._print_header_(name, dot='-', is_title=False)
-        self.stream.write('''..  autofunction:: paddle.v2.fluid.{0}.{1}
+        self.stream.write('''..  autofunction:: paddle.fluid.{0}.{1}
     :noindex:
 
 '''.format(self.module_name, name))

doc/api/fluid/index.rst

+======================
+Fluid
+======================
+
+..  toctree::
+    :maxdepth: 1
+
+    layers.rst
+    data_feeder.rst
+    executor.rst
+    initializer.rst
+    evaluator.rst
+    nets.rst
+    optimizer.rst
+    param_attr.rst
+    profiler.rst
+    regularizer.rst
+    io.rst

doc/api/v2/fluid/initializer.rst → doc/api/fluid/initializer.rst

@@ -8,28 +8,28 @@ initializer
 Constant
 --------
 
-..  autoclass:: paddle.v2.fluid.initializer.Constant
+..  autoclass:: paddle.fluid.initializer.Constant
     :members:
     :noindex:
 
 Uniform
 -------
 
-..  autoclass:: paddle.v2.fluid.initializer.Uniform
+..  autoclass:: paddle.fluid.initializer.Uniform
     :members:
     :noindex:
 
 Normal
 ------
 
-..  autoclass:: paddle.v2.fluid.initializer.Normal
+..  autoclass:: paddle.fluid.initializer.Normal
     :members:
     :noindex:
 
 Xavier
 ------
 
-..  autoclass:: paddle.v2.fluid.initializer.Xavier
+..  autoclass:: paddle.fluid.initializer.Xavier
     :members:
     :noindex:
 

doc/api/v2/fluid/io.rst → doc/api/fluid/io.rst

@@ -8,54 +8,54 @@ io
 save_vars
 ---------
 
-..  autofunction:: paddle.v2.fluid.io.save_vars
+..  autofunction:: paddle.fluid.io.save_vars
     :noindex:
 
 save_params
 -----------
 
-..  autofunction:: paddle.v2.fluid.io.save_params
+..  autofunction:: paddle.fluid.io.save_params
     :noindex:
 
 save_persistables
 -----------------
 
-..  autofunction:: paddle.v2.fluid.io.save_persistables
+..  autofunction:: paddle.fluid.io.save_persistables
     :noindex:
 
 load_vars
 ---------
 
-..  autofunction:: paddle.v2.fluid.io.load_vars
+..  autofunction:: paddle.fluid.io.load_vars
     :noindex:
 
 load_params
 -----------
 
-..  autofunction:: paddle.v2.fluid.io.load_params
+..  autofunction:: paddle.fluid.io.load_params
     :noindex:
 
 load_persistables
 -----------------
 
-..  autofunction:: paddle.v2.fluid.io.load_persistables
+..  autofunction:: paddle.fluid.io.load_persistables
     :noindex:
 
 save_inference_model
 --------------------
 
-..  autofunction:: paddle.v2.fluid.io.save_inference_model
+..  autofunction:: paddle.fluid.io.save_inference_model
     :noindex:
 
 load_inference_model
 --------------------
 
-..  autofunction:: paddle.v2.fluid.io.load_inference_model
+..  autofunction:: paddle.fluid.io.load_inference_model
     :noindex:
 
 get_inference_program
 ---------------------
 
-..  autofunction:: paddle.v2.fluid.io.get_inference_program
+..  autofunction:: paddle.fluid.io.get_inference_program
     :noindex:
 

doc/api/v2/fluid/layers.rst → doc/api/fluid/layers.rst

@@ -11,167 +11,167 @@ control_flow
 split_lod_tensor
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.split_lod_tensor
+..  autofunction:: paddle.fluid.layers.split_lod_tensor
     :noindex:
 
 merge_lod_tensor
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.merge_lod_tensor
+..  autofunction:: paddle.fluid.layers.merge_lod_tensor
     :noindex:
 
 BlockGuard
 ----------
 
-..  autoclass:: paddle.v2.fluid.layers.BlockGuard
+..  autoclass:: paddle.fluid.layers.BlockGuard
     :members:
     :noindex:
 
 BlockGuardWithCompletion
 ------------------------
 
-..  autoclass:: paddle.v2.fluid.layers.BlockGuardWithCompletion
+..  autoclass:: paddle.fluid.layers.BlockGuardWithCompletion
     :members:
     :noindex:
 
 StaticRNNMemoryLink
 -------------------
 
-..  autoclass:: paddle.v2.fluid.layers.StaticRNNMemoryLink
+..  autoclass:: paddle.fluid.layers.StaticRNNMemoryLink
     :members:
     :noindex:
 
 WhileGuard
 ----------
 
-..  autoclass:: paddle.v2.fluid.layers.WhileGuard
+..  autoclass:: paddle.fluid.layers.WhileGuard
     :members:
     :noindex:
 
 While
 -----
 
-..  autoclass:: paddle.v2.fluid.layers.While
+..  autoclass:: paddle.fluid.layers.While
     :members:
     :noindex:
 
 lod_rank_table
 --------------
 
-..  autofunction:: paddle.v2.fluid.layers.lod_rank_table
+..  autofunction:: paddle.fluid.layers.lod_rank_table
     :noindex:
 
 max_sequence_len
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.max_sequence_len
+..  autofunction:: paddle.fluid.layers.max_sequence_len
     :noindex:
 
 topk
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.topk
+..  autofunction:: paddle.fluid.layers.topk
     :noindex:
 
 lod_tensor_to_array
 -------------------
 
-..  autofunction:: paddle.v2.fluid.layers.lod_tensor_to_array
+..  autofunction:: paddle.fluid.layers.lod_tensor_to_array
     :noindex:
 
 array_to_lod_tensor
 -------------------
 
-..  autofunction:: paddle.v2.fluid.layers.array_to_lod_tensor
+..  autofunction:: paddle.fluid.layers.array_to_lod_tensor
     :noindex:
 
 increment
 ---------
 
-..  autofunction:: paddle.v2.fluid.layers.increment
+..  autofunction:: paddle.fluid.layers.increment
     :noindex:
 
 array_write
 -----------
 
-..  autofunction:: paddle.v2.fluid.layers.array_write
+..  autofunction:: paddle.fluid.layers.array_write
     :noindex:
 
 create_array
 ------------
 
-..  autofunction:: paddle.v2.fluid.layers.create_array
+..  autofunction:: paddle.fluid.layers.create_array
     :noindex:
 
 less_than
 ---------
 
-..  autofunction:: paddle.v2.fluid.layers.less_than
+..  autofunction:: paddle.fluid.layers.less_than
     :noindex:
 
 array_read
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.array_read
+..  autofunction:: paddle.fluid.layers.array_read
     :noindex:
 
 shrink_memory
 -------------
 
-..  autofunction:: paddle.v2.fluid.layers.shrink_memory
+..  autofunction:: paddle.fluid.layers.shrink_memory
     :noindex:
 
 array_length
 ------------
 
-..  autofunction:: paddle.v2.fluid.layers.array_length
+..  autofunction:: paddle.fluid.layers.array_length
     :noindex:
 
 IfElse
 ------
 
-..  autoclass:: paddle.v2.fluid.layers.IfElse
+..  autoclass:: paddle.fluid.layers.IfElse
     :members:
     :noindex:
 
 DynamicRNN
 ----------
 
-..  autoclass:: paddle.v2.fluid.layers.DynamicRNN
+..  autoclass:: paddle.fluid.layers.DynamicRNN
     :members:
     :noindex:
 
 ConditionalBlock
 ----------------
 
-..  autoclass:: paddle.v2.fluid.layers.ConditionalBlock
+..  autoclass:: paddle.fluid.layers.ConditionalBlock
     :members:
     :noindex:
 
 StaticRNN
 ---------
 
-..  autoclass:: paddle.v2.fluid.layers.StaticRNN
+..  autoclass:: paddle.fluid.layers.StaticRNN
     :members:
     :noindex:
 
 reorder_lod_tensor_by_rank
 --------------------------
 
-..  autofunction:: paddle.v2.fluid.layers.reorder_lod_tensor_by_rank
+..  autofunction:: paddle.fluid.layers.reorder_lod_tensor_by_rank
     :noindex:
 
 ParallelDo
 ----------
 
-..  autoclass:: paddle.v2.fluid.layers.ParallelDo
+..  autoclass:: paddle.fluid.layers.ParallelDo
     :members:
     :noindex:
 
 Print
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.Print
+..  autofunction:: paddle.fluid.layers.Print
     :noindex:
 
 device
@@ -180,7 +180,7 @@ device
 get_places
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.get_places
+..  autofunction:: paddle.fluid.layers.get_places
     :noindex:
 
 io
@@ -189,27 +189,27 @@ io
 data
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.data
+..  autofunction:: paddle.fluid.layers.data
     :noindex:
 
 BlockGuardServ
 --------------
 
-..  autoclass:: paddle.v2.fluid.layers.BlockGuardServ
+..  autoclass:: paddle.fluid.layers.BlockGuardServ
     :members:
     :noindex:
 
 ListenAndServ
 -------------
 
-..  autoclass:: paddle.v2.fluid.layers.ListenAndServ
+..  autoclass:: paddle.fluid.layers.ListenAndServ
     :members:
     :noindex:
 
 Send
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.Send
+..  autofunction:: paddle.fluid.layers.Send
     :noindex:
 
 nn
@@ -218,259 +218,259 @@ nn
 fc
 --
 
-..  autofunction:: paddle.v2.fluid.layers.fc
+..  autofunction:: paddle.fluid.layers.fc
     :noindex:
 
 embedding
 ---------
 
-..  autofunction:: paddle.v2.fluid.layers.embedding
+..  autofunction:: paddle.fluid.layers.embedding
     :noindex:
 
 dynamic_lstm
 ------------
 
-..  autofunction:: paddle.v2.fluid.layers.dynamic_lstm
+..  autofunction:: paddle.fluid.layers.dynamic_lstm
     :noindex:
 
 dynamic_lstmp
 -------------
 
-..  autofunction:: paddle.v2.fluid.layers.dynamic_lstmp
+..  autofunction:: paddle.fluid.layers.dynamic_lstmp
     :noindex:
 
 dynamic_gru
 -----------
 
-..  autofunction:: paddle.v2.fluid.layers.dynamic_gru
+..  autofunction:: paddle.fluid.layers.dynamic_gru
     :noindex:
 
 gru_unit
 --------
 
-..  autofunction:: paddle.v2.fluid.layers.gru_unit
+..  autofunction:: paddle.fluid.layers.gru_unit
     :noindex:
 
 linear_chain_crf
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.linear_chain_crf
+..  autofunction:: paddle.fluid.layers.linear_chain_crf
     :noindex:
 
 crf_decoding
 ------------
 
-..  autofunction:: paddle.v2.fluid.layers.crf_decoding
+..  autofunction:: paddle.fluid.layers.crf_decoding
     :noindex:
 
 cos_sim
 -------
 
-..  autofunction:: paddle.v2.fluid.layers.cos_sim
+..  autofunction:: paddle.fluid.layers.cos_sim
     :noindex:
 
 cross_entropy
 -------------
 
-..  autofunction:: paddle.v2.fluid.layers.cross_entropy
+..  autofunction:: paddle.fluid.layers.cross_entropy
     :noindex:
 
 square_error_cost
 -----------------
 
-..  autofunction:: paddle.v2.fluid.layers.square_error_cost
+..  autofunction:: paddle.fluid.layers.square_error_cost
     :noindex:
 
 accuracy
 --------
 
-..  autofunction:: paddle.v2.fluid.layers.accuracy
+..  autofunction:: paddle.fluid.layers.accuracy
     :noindex:
 
 chunk_eval
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.chunk_eval
+..  autofunction:: paddle.fluid.layers.chunk_eval
     :noindex:
 
 sequence_conv
 -------------
 
-..  autofunction:: paddle.v2.fluid.layers.sequence_conv
+..  autofunction:: paddle.fluid.layers.sequence_conv
     :noindex:
 
 conv2d
 ------
 
-..  autofunction:: paddle.v2.fluid.layers.conv2d
+..  autofunction:: paddle.fluid.layers.conv2d
     :noindex:
 
 sequence_pool
 -------------
 
-..  autofunction:: paddle.v2.fluid.layers.sequence_pool
+..  autofunction:: paddle.fluid.layers.sequence_pool
     :noindex:
 
 pool2d
 ------
 
-..  autofunction:: paddle.v2.fluid.layers.pool2d
+..  autofunction:: paddle.fluid.layers.pool2d
     :noindex:
 
 batch_norm
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.batch_norm
+..  autofunction:: paddle.fluid.layers.batch_norm
     :noindex:
 
 layer_norm
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.layer_norm
+..  autofunction:: paddle.fluid.layers.layer_norm
     :noindex:
 
 beam_search_decode
 ------------------
 
-..  autofunction:: paddle.v2.fluid.layers.beam_search_decode
+..  autofunction:: paddle.fluid.layers.beam_search_decode
     :noindex:
 
 conv2d_transpose
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.conv2d_transpose
+..  autofunction:: paddle.fluid.layers.conv2d_transpose
     :noindex:
 
 sequence_expand
 ---------------
 
-..  autofunction:: paddle.v2.fluid.layers.sequence_expand
+..  autofunction:: paddle.fluid.layers.sequence_expand
     :noindex:
 
 lstm_unit
 ---------
 
-..  autofunction:: paddle.v2.fluid.layers.lstm_unit
+..  autofunction:: paddle.fluid.layers.lstm_unit
     :noindex:
 
 reduce_sum
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.reduce_sum
+..  autofunction:: paddle.fluid.layers.reduce_sum
     :noindex:
 
 reduce_mean
 -----------
 
-..  autofunction:: paddle.v2.fluid.layers.reduce_mean
+..  autofunction:: paddle.fluid.layers.reduce_mean
     :noindex:
 
 reduce_max
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.reduce_max
+..  autofunction:: paddle.fluid.layers.reduce_max
     :noindex:
 
 reduce_min
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.reduce_min
+..  autofunction:: paddle.fluid.layers.reduce_min
     :noindex:
 
 sequence_first_step
 -------------------
 
-..  autofunction:: paddle.v2.fluid.layers.sequence_first_step
+..  autofunction:: paddle.fluid.layers.sequence_first_step
     :noindex:
 
 sequence_last_step
 ------------------
 
-..  autofunction:: paddle.v2.fluid.layers.sequence_last_step
+..  autofunction:: paddle.fluid.layers.sequence_last_step
     :noindex:
 
 dropout
 -------
 
-..  autofunction:: paddle.v2.fluid.layers.dropout
+..  autofunction:: paddle.fluid.layers.dropout
     :noindex:
 
 split
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.split
+..  autofunction:: paddle.fluid.layers.split
     :noindex:
 
 ctc_greedy_decoder
 ------------------
 
-..  autofunction:: paddle.v2.fluid.layers.ctc_greedy_decoder
+..  autofunction:: paddle.fluid.layers.ctc_greedy_decoder
     :noindex:
 
 edit_distance
 -------------
 
-..  autofunction:: paddle.v2.fluid.layers.edit_distance
+..  autofunction:: paddle.fluid.layers.edit_distance
     :noindex:
 
 l2_normalize
 ------------
 
-..  autofunction:: paddle.v2.fluid.layers.l2_normalize
+..  autofunction:: paddle.fluid.layers.l2_normalize
     :noindex:
 
 matmul
 ------
 
-..  autofunction:: paddle.v2.fluid.layers.matmul
+..  autofunction:: paddle.fluid.layers.matmul
     :noindex:
 
 warpctc
 -------
 
-..  autofunction:: paddle.v2.fluid.layers.warpctc
+..  autofunction:: paddle.fluid.layers.warpctc
     :noindex:
 
 sequence_reshape
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.sequence_reshape
+..  autofunction:: paddle.fluid.layers.sequence_reshape
     :noindex:
 
 transpose
 ---------
 
-..  autofunction:: paddle.v2.fluid.layers.transpose
+..  autofunction:: paddle.fluid.layers.transpose
     :noindex:
 
 im2sequence
 -----------
 
-..  autofunction:: paddle.v2.fluid.layers.im2sequence
+..  autofunction:: paddle.fluid.layers.im2sequence
     :noindex:
 
 nce
 ---
 
-..  autofunction:: paddle.v2.fluid.layers.nce
+..  autofunction:: paddle.fluid.layers.nce
     :noindex:
 
 beam_search
 -----------
 
-..  autofunction:: paddle.v2.fluid.layers.beam_search
+..  autofunction:: paddle.fluid.layers.beam_search
     :noindex:
 
 row_conv
 --------
 
-..  autofunction:: paddle.v2.fluid.layers.row_conv
+..  autofunction:: paddle.fluid.layers.row_conv
     :noindex:
 
 multiplex
 ---------
 
-..  autofunction:: paddle.v2.fluid.layers.multiplex
+..  autofunction:: paddle.fluid.layers.multiplex
     :noindex:
 
 ops
@@ -479,259 +479,259 @@ ops
 mean
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.mean
+..  autofunction:: paddle.fluid.layers.mean
     :noindex:
 
 mul
 ---
 
-..  autofunction:: paddle.v2.fluid.layers.mul
+..  autofunction:: paddle.fluid.layers.mul
     :noindex:
 
 reshape
 -------
 
-..  autofunction:: paddle.v2.fluid.layers.reshape
+..  autofunction:: paddle.fluid.layers.reshape
     :noindex:
 
 scale
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.scale
+..  autofunction:: paddle.fluid.layers.scale
     :noindex:
 
 sigmoid_cross_entropy_with_logits
 ---------------------------------
 
-..  autofunction:: paddle.v2.fluid.layers.sigmoid_cross_entropy_with_logits
+..  autofunction:: paddle.fluid.layers.sigmoid_cross_entropy_with_logits
     :noindex:
 
 elementwise_add
 ---------------
 
-..  autofunction:: paddle.v2.fluid.layers.elementwise_add
+..  autofunction:: paddle.fluid.layers.elementwise_add
     :noindex:
 
 elementwise_div
 ---------------
 
-..  autofunction:: paddle.v2.fluid.layers.elementwise_div
+..  autofunction:: paddle.fluid.layers.elementwise_div
     :noindex:
 
 elementwise_sub
 ---------------
 
-..  autofunction:: paddle.v2.fluid.layers.elementwise_sub
+..  autofunction:: paddle.fluid.layers.elementwise_sub
     :noindex:
 
 elementwise_mul
 ---------------
 
-..  autofunction:: paddle.v2.fluid.layers.elementwise_mul
+..  autofunction:: paddle.fluid.layers.elementwise_mul
     :noindex:
 
 elementwise_max
 ---------------
 
-..  autofunction:: paddle.v2.fluid.layers.elementwise_max
+..  autofunction:: paddle.fluid.layers.elementwise_max
     :noindex:
 
 elementwise_min
 ---------------
 
-..  autofunction:: paddle.v2.fluid.layers.elementwise_min
+..  autofunction:: paddle.fluid.layers.elementwise_min
     :noindex:
 
 elementwise_pow
 ---------------
 
-..  autofunction:: paddle.v2.fluid.layers.elementwise_pow
+..  autofunction:: paddle.fluid.layers.elementwise_pow
     :noindex:
 
 clip
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.clip
+..  autofunction:: paddle.fluid.layers.clip
     :noindex:
 
 clip_by_norm
 ------------
 
-..  autofunction:: paddle.v2.fluid.layers.clip_by_norm
+..  autofunction:: paddle.fluid.layers.clip_by_norm
     :noindex:
 
 sequence_softmax
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.sequence_softmax
+..  autofunction:: paddle.fluid.layers.sequence_softmax
     :noindex:
 
 sigmoid
 -------
 
-..  autofunction:: paddle.v2.fluid.layers.sigmoid
+..  autofunction:: paddle.fluid.layers.sigmoid
     :noindex:
 
 logsigmoid
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.logsigmoid
+..  autofunction:: paddle.fluid.layers.logsigmoid
     :noindex:
 
 exp
 ---
 
-..  autofunction:: paddle.v2.fluid.layers.exp
+..  autofunction:: paddle.fluid.layers.exp
     :noindex:
 
 relu
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.relu
+..  autofunction:: paddle.fluid.layers.relu
     :noindex:
 
 tanh
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.tanh
+..  autofunction:: paddle.fluid.layers.tanh
     :noindex:
 
 tanh_shrink
 -----------
 
-..  autofunction:: paddle.v2.fluid.layers.tanh_shrink
+..  autofunction:: paddle.fluid.layers.tanh_shrink
     :noindex:
 
 softshrink
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.softshrink
+..  autofunction:: paddle.fluid.layers.softshrink
     :noindex:
 
 sqrt
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.sqrt
+..  autofunction:: paddle.fluid.layers.sqrt
     :noindex:
 
 abs
 ---
 
-..  autofunction:: paddle.v2.fluid.layers.abs
+..  autofunction:: paddle.fluid.layers.abs
     :noindex:
 
 ceil
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.ceil
+..  autofunction:: paddle.fluid.layers.ceil
     :noindex:
 
 floor
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.floor
+..  autofunction:: paddle.fluid.layers.floor
     :noindex:
 
 round
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.round
+..  autofunction:: paddle.fluid.layers.round
     :noindex:
 
 reciprocal
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.reciprocal
+..  autofunction:: paddle.fluid.layers.reciprocal
     :noindex:
 
 log
 ---
 
-..  autofunction:: paddle.v2.fluid.layers.log
+..  autofunction:: paddle.fluid.layers.log
     :noindex:
 
 square
 ------
 
-..  autofunction:: paddle.v2.fluid.layers.square
+..  autofunction:: paddle.fluid.layers.square
     :noindex:
 
 softplus
 --------
 
-..  autofunction:: paddle.v2.fluid.layers.softplus
+..  autofunction:: paddle.fluid.layers.softplus
     :noindex:
 
 softsign
 --------
 
-..  autofunction:: paddle.v2.fluid.layers.softsign
+..  autofunction:: paddle.fluid.layers.softsign
     :noindex:
 
 brelu
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.brelu
+..  autofunction:: paddle.fluid.layers.brelu
     :noindex:
 
 leaky_relu
 ----------
 
-..  autofunction:: paddle.v2.fluid.layers.leaky_relu
+..  autofunction:: paddle.fluid.layers.leaky_relu
     :noindex:
 
 soft_relu
 ---------
 
-..  autofunction:: paddle.v2.fluid.layers.soft_relu
+..  autofunction:: paddle.fluid.layers.soft_relu
     :noindex:
 
 elu
 ---
 
-..  autofunction:: paddle.v2.fluid.layers.elu
+..  autofunction:: paddle.fluid.layers.elu
     :noindex:
 
 relu6
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.relu6
+..  autofunction:: paddle.fluid.layers.relu6
     :noindex:
 
 pow
 ---
 
-..  autofunction:: paddle.v2.fluid.layers.pow
+..  autofunction:: paddle.fluid.layers.pow
     :noindex:
 
 stanh
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.stanh
+..  autofunction:: paddle.fluid.layers.stanh
     :noindex:
 
 hard_shrink
 -----------
 
-..  autofunction:: paddle.v2.fluid.layers.hard_shrink
+..  autofunction:: paddle.fluid.layers.hard_shrink
     :noindex:
 
 thresholded_relu
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.thresholded_relu
+..  autofunction:: paddle.fluid.layers.thresholded_relu
     :noindex:
 
 hard_sigmoid
 ------------
 
-..  autofunction:: paddle.v2.fluid.layers.hard_sigmoid
+..  autofunction:: paddle.fluid.layers.hard_sigmoid
     :noindex:
 
 swish
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.swish
+..  autofunction:: paddle.fluid.layers.swish
     :noindex:
 
 tensor
@@ -740,66 +740,66 @@ tensor
 create_tensor
 -------------
 
-..  autofunction:: paddle.v2.fluid.layers.create_tensor
+..  autofunction:: paddle.fluid.layers.create_tensor
     :noindex:
 
 create_parameter
 ----------------
 
-..  autofunction:: paddle.v2.fluid.layers.create_parameter
+..  autofunction:: paddle.fluid.layers.create_parameter
     :noindex:
 
 create_global_var
 -----------------
 
-..  autofunction:: paddle.v2.fluid.layers.create_global_var
+..  autofunction:: paddle.fluid.layers.create_global_var
     :noindex:
 
 cast
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.cast
+..  autofunction:: paddle.fluid.layers.cast
     :noindex:
 
 concat
 ------
 
-..  autofunction:: paddle.v2.fluid.layers.concat
+..  autofunction:: paddle.fluid.layers.concat
     :noindex:
 
 sums
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.sums
+..  autofunction:: paddle.fluid.layers.sums
     :noindex:
 
 assign
 ------
 
-..  autofunction:: paddle.v2.fluid.layers.assign
+..  autofunction:: paddle.fluid.layers.assign
     :noindex:
 
 fill_constant_batch_size_like
 -----------------------------
 
-..  autofunction:: paddle.v2.fluid.layers.fill_constant_batch_size_like
+..  autofunction:: paddle.fluid.layers.fill_constant_batch_size_like
     :noindex:
 
 fill_constant
 -------------
 
-..  autofunction:: paddle.v2.fluid.layers.fill_constant
+..  autofunction:: paddle.fluid.layers.fill_constant
     :noindex:
 
 ones
 ----
 
-..  autofunction:: paddle.v2.fluid.layers.ones
+..  autofunction:: paddle.fluid.layers.ones
     :noindex:
 
 zeros
 -----
 
-..  autofunction:: paddle.v2.fluid.layers.zeros
+..  autofunction:: paddle.fluid.layers.zeros
     :noindex:
 

doc/api/v2/fluid/nets.rst → doc/api/fluid/nets.rst

@@ -8,24 +8,24 @@ nets
 simple_img_conv_pool
 --------------------
 
-..  autofunction:: paddle.v2.fluid.nets.simple_img_conv_pool
+..  autofunction:: paddle.fluid.nets.simple_img_conv_pool
     :noindex:
 
 sequence_conv_pool
 ------------------
 
-..  autofunction:: paddle.v2.fluid.nets.sequence_conv_pool
+..  autofunction:: paddle.fluid.nets.sequence_conv_pool
     :noindex:
 
 glu
 ---
 
-..  autofunction:: paddle.v2.fluid.nets.glu
+..  autofunction:: paddle.fluid.nets.glu
     :noindex:
 
 scaled_dot_product_attention
 ----------------------------
 
-..  autofunction:: paddle.v2.fluid.nets.scaled_dot_product_attention
+..  autofunction:: paddle.fluid.nets.scaled_dot_product_attention
     :noindex:
 

doc/api/v2/fluid/optimizer.rst → doc/api/fluid/optimizer.rst

@@ -8,42 +8,42 @@ optimizer
 SGD
 ---
 
-..  autoclass:: paddle.v2.fluid.optimizer.SGD
+..  autoclass:: paddle.fluid.optimizer.SGD
     :members:
     :noindex:
 
 Momentum
 --------
 
-..  autoclass:: paddle.v2.fluid.optimizer.Momentum
+..  autoclass:: paddle.fluid.optimizer.Momentum
     :members:
     :noindex:
 
 Adagrad
 -------
 
-..  autoclass:: paddle.v2.fluid.optimizer.Adagrad
+..  autoclass:: paddle.fluid.optimizer.Adagrad
     :members:
     :noindex:
 
 Adam
 ----
 
-..  autoclass:: paddle.v2.fluid.optimizer.Adam
+..  autoclass:: paddle.fluid.optimizer.Adam
     :members:
     :noindex:
 
 Adamax
 ------
 
-..  autoclass:: paddle.v2.fluid.optimizer.Adamax
+..  autoclass:: paddle.fluid.optimizer.Adamax
     :members:
     :noindex:
 
 DecayedAdagrad
 --------------
 
-..  autoclass:: paddle.v2.fluid.optimizer.DecayedAdagrad
+..  autoclass:: paddle.fluid.optimizer.DecayedAdagrad
     :members:
     :noindex:
 

doc/api/v2/fluid/param_attr.rst → doc/api/fluid/param_attr.rst

@@ -8,14 +8,14 @@ param_attr
 ParamAttr
 ---------
 
-..  autoclass:: paddle.v2.fluid.param_attr.ParamAttr
+..  autoclass:: paddle.fluid.param_attr.ParamAttr
     :members:
     :noindex:
 
 WeightNormParamAttr
 -------------------
 
-..  autoclass:: paddle.v2.fluid.param_attr.WeightNormParamAttr
+..  autoclass:: paddle.fluid.param_attr.WeightNormParamAttr
     :members:
     :noindex:
 

doc/api/v2/fluid/profiler.rst → doc/api/fluid/profiler.rst

@@ -8,18 +8,18 @@ profiler
 cuda_profiler
 -------------
 
-..  autofunction:: paddle.v2.fluid.profiler.cuda_profiler
+..  autofunction:: paddle.fluid.profiler.cuda_profiler
     :noindex:
 
 reset_profiler
 --------------
 
-..  autofunction:: paddle.v2.fluid.profiler.reset_profiler
+..  autofunction:: paddle.fluid.profiler.reset_profiler
     :noindex:
 
 profiler
 --------
 
-..  autofunction:: paddle.v2.fluid.profiler.profiler
+..  autofunction:: paddle.fluid.profiler.profiler
     :noindex:
 

doc/api/v2/fluid/regularizer.rst → doc/api/fluid/regularizer.rst

@@ -8,20 +8,20 @@ regularizer
 append_regularization_ops
 -------------------------
 
-..  autofunction:: paddle.v2.fluid.regularizer.append_regularization_ops
+..  autofunction:: paddle.fluid.regularizer.append_regularization_ops
     :noindex:
 
 L1Decay
 -------
 
-..  autoclass:: paddle.v2.fluid.regularizer.L1Decay
+..  autoclass:: paddle.fluid.regularizer.L1Decay
     :members:
     :noindex:
 
 L2Decay
 -------
 
-..  autoclass:: paddle.v2.fluid.regularizer.L2Decay
+..  autoclass:: paddle.fluid.regularizer.L2Decay
     :members:
     :noindex:
 

doc/api/index_cn.rst

-API
-===
-
-..  toctree::
-    :maxdepth: 1
-
-    模型配置 <v2/model_configs.rst>
-    数据访问 <v2/data.rst>
-    训练与应用 <v2/run_logic.rst>
-    v2/fluid.rst

doc/api/index_en.rst

@@ -4,7 +4,8 @@ API
 ..  toctree::
     :maxdepth: 1
 
+    overview.rst
     v2/model_configs.rst
     v2/data.rst
     v2/run_logic.rst
-    v2/fluid.rst
+    fluid/index.rst

doc/api/overview.rst

+V2 API Overview
+================
+
+The PaddlePaddle V2 API is designed to provide a modern user interface for PaddlePaddle V1(the original layer-based platform of PaddlePaddle),
+it proposes some high-level concepts such as `Layers <http://www.paddlepaddle.org/docs/develop/api/en/v2/config/layer.html>`_ , `Optimizer <http://www.paddlepaddle.org/docs/develop/api/en/v2/config/optimizer.html>`_ , `Evaluator <http://www.paddlepaddle.org/docs/develop/api/en/v2/config/evaluators.html>`_  and `Data Reader <http://www.paddlepaddle.org/docs/develop/api/en/v2/data/data_reader.html>`_ to make the model configuration more familiar to users.
+
+A model is composed of the computation described by a group of `Layers`, with `Evaluator` to define the error, `Optimizer` to update the parameters and `Data Reader` to feed in the data.
+
+We also provide the `interface for Training and Inference <http://www.paddlepaddle.org/docs/develop/api/en/v2/run_logic.html>`_ to help control the training and inference phrase,
+it has several easy to use methods
+
+- `paddle.train` 
+- `paddle.test`
+- `paddle.infer`
+
+to better expose the internal running details, different `events <http://www.paddlepaddle.org/docs/develop/api/en/v2/run_logic.html#event>`_ are available to users by writing some callbacks.

doc/api/v2/fluid.rst

-======================
-Fluid
-======================
-
-..  toctree::
-    :maxdepth: 1
-
-    fluid/layers.rst
-    fluid/data_feeder.rst
-    fluid/executor.rst
-    fluid/initializer.rst
-    fluid/evaluator.rst
-    fluid/nets.rst
-    fluid/optimizer.rst
-    fluid/param_attr.rst
-    fluid/profiler.rst
-    fluid/regularizer.rst
-    fluid/io.rst

doc/design/concurrent_programming.md

@@ -12,7 +12,7 @@ The following table compares concepts in Fluid and Go
 
 | Go | Fluid |
 |----|-------|
-|user-defined functions | [layers](https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid) |
+|user-defined functions | [layers](https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/fluid) |
 | control-flow and built-in functions | [intrinsics/operators](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators) |
 | goroutines, channels | [class ThreadPool](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/framework/thread_pool.h) |
 | runtime | [class Executor](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/executor.h) |

doc/design/fluid.md

@@ -89,7 +89,7 @@ with train_loop.block():
     h[t] = the_step(input[t])
 ```    
 
-An actual Fluid example is described  [here](https://github.com/PaddlePaddle/Paddle/blob/a91efdde6910ce92a78e3aa7157412c4c88d9ee8/python/paddle/v2/fluid/tests/test_while_op.py#L36-L44).
+An actual Fluid example is described  [here](https://github.com/PaddlePaddle/Paddle/blob/bde090a97564b9c61a6aaa38b72ccc4889d102d9/python/paddle/fluid/tests/unittests/test_while_op.py#L50-L58).
 
 From the example, the Fluid programs look very similar to their PyTorch equivalent programs, except that Fluid's loop structure, wrapped with Python's `with` statement, could run much faster than just a Python loop.
 

doc/design/memory_optimization.md

@@ -101,7 +101,7 @@ In-place is a built-in attribute of an operator. Since we treat in-place and oth
 
 #### contruct control flow graph
 
-Following is the ProgramDesc protobuf of [machine translation](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/tests/book/test_machine_translation.py) example.
+Following is the ProgramDesc protobuf of [machine translation](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/fluid/tests/book/test_machine_translation.py) example.
 
 - Block0:
 

doc/design/parallel_do.md

+# Design Doc: Parallel_Do in PaddlePaddle
+
+In PaddlePaddle, we use parallel_do primitive to represent multithread data parallel processing.
+
+## Design overview
+
+The definition of a parallel_do op looks like the following
+
+```c++
+AddInput(kInputs, "Inputs needed to be split onto different devices").AsDuplicable();
+AddInput(kParameters, "Parameters are duplicated over different devices")
+    .AsDuplicable();
+AddInput(kPlaces, "Devices used for parallel processing");
+AddOutput(kOutputs, "Outputs needed to be merged from different devices").AsDuplicable();
+AddOutput(kParallelScopes,
+          "Scopes for all local variables in forward pass. One scope for each device");
+AddAttr<framework::BlockDesc *>(kParallelBlock,
+                                "List of operaters to be executed in parallel");
+```
+
+A vanilla implementation of parallel_do can be shown as the following (`|` means single thread and
+`||||` means multiple threads)
+
+```
+In the forward pass
+  |      Split input onto different devices
+  |      Copy parameter onto different devices
+  ||||   Compute forward pass in parallel
+  |      Merge output from different devices
+
+In the backward pass
+  |      Split output@grad onto different devices
+  ||||   Compute backward pass in parallel
+  |      accumulate param@grad from different devices to the first device
+  |      Merge input@grad from different devices
+  |      Copy param@grad to the place of parallel_do_op
+```
+
+This implementation allows to write mixed device program like this
+
+```python
+# get embedding feature on CPU
+feature = some_cpu_only_op(data)
+
+gpu_places = get_place(use_gpu=True)
+# parallel processing on multiple GPUs
+pd = ParallelDo(gpu_places)
+with pd.do():
+    read_input(feature)
+    prediction = my_net(feature)
+    write_output(prediction)
+prediction = pd()
+loss = cross_entropy(prediction, label)
+```
+
+And the programDesc are like the following
+
+```
+# start_program will be run by executor(CPUPlace), all w1, w2 will be allocated on CPU
+start_program
+{
+  vars: w1, w2
+  ops: init(w1), init(w2)
+}
+
+main_program
+{
+block0 {
+  vars: data, places, w1, w2
+  ops: data, get_place, parallel_do(block1),
+       parallel_do_grad(block2),
+       sgd(w2, w2_grad),
+       sgd(w1, w1_grad)
+}
+block1 {
+  parent_block: 0
+  vars: data, h1, h2, loss
+  ops: fc, fc, softmax
+}
+block2 {
+  parent_block: 1
+  vars: data_grad, h1_grad, h2_grad, loss_gard, w1_grad, w2_grad
+  ops: softmax_grad,
+       fc_grad
+       fc_grad
+}
+}
+```
+
+## Performance Imporvement
+
+There are serial places we can make this parallel_do faster.
+
+### forward: split input onto different devices
+
+If the input of the parallel_do is independent from any prior opeartors, we can avoid this step by 
+prefetching the input onto different devices in a seperate background thread. And the python code
+looks like this.
+```python
+pd = ParallelDo(gpu_places)
+with pd.do():
+    feature = get_data_from_prefetch_queue(gpu_places)
+    prediction = my_net(feature)
+    write_output(activation)
+```
+
+### forward: Copy parameter to onto different devices
+
+We can avoid this step by making each device have a copy of the parameter. This requires:
+
+1. `fluid.default_start_up_program()` to be run on all devices
+1. In the backward, allreduce param@grad at different devices, this requires
+    1. `backward.py` add `allreduce` operators at parallel_do_grad
+    1. `allreduce` operators need to be called in async mode to achieve maximum throughput
+1. apply gradients related op(i.e. cliping, normalization, decay, sgd) on different devices in parallel
+
+By doing so, we also avoided "backward: accumulate param@grad from different devices to the first device".
+And the ProgramDesc looks like the following
+
+```
+# w1, w2 will be allocated on all GPUs
+start_program
+{
+block0 {
+  parallel_do(block1)
+}
+block1 {
+  parent_block: 0
+  vars: w1, w2
+  ops: init(w1), init(w2)
+}
+}
+
+main_program
+{
+block0 {
+  vars: data, places, w1, w2
+  ops: data, get_place, parallel_do(block1),
+       parallel_do_grad(block2),      # append_backward
+       parallel_do(block3)            # append_optimization
+       
+}
+block1 {
+  parent_block: 0
+  vars: data, h1, h2, loss
+  ops: fc, fc, softmax
+}
+block2 {
+  parent_block: 1
+  vars: data_grad, h1_grad, h2_grad, loss_gard, w1_grad, w2_grad
+  ops: softmax_grad,
+       fc_grad, allreduce(places, scopes, w1_grad),
+       fc_grad, allreduce(places, scopes, w2_grad)
+}
+block3 {
+  parent_block: 0
+  vars: lr
+  ops: sgd(w2, w2_grad),
+       sgd(w1, w1_grad)
+}
+}
+```

doc/design/var_desc.md

 ## Background
 PaddlePaddle divides the description of neural network computation into two stages: compile time and runtime. At compile time, the neural network computation is described as a `ProgramDesc` whereas at runtime an `Executor` interprets the `ProgramDesc` to compute the operations.
 
-PaddlePaddle use proto message to describe compile time program because
+PaddlePaddle uses proto message to describe compile time program because :
 
 1. The computation program description must be serializable and saved in a file.
-1. During distributed training, the sreialized program will be sent to multiple workers. It should also be possible to break the program into different components, each of which can be executed on different workers.
+1. During distributed training, the serialized program will be sent to multiple workers. It should also be possible to break the program into different components, each of which can be executed on a different worker.
 
 The computation `Program` consists of nested `Blocks`. Each `Block` will consist of data(i.e. `Variable`)  and  `Operations`. The concept to represent them is in the table below.
 
@@ -14,28 +14,33 @@ The computation `Program` consists of nested `Blocks`. Each `Block` will consist
 |Operation|OpDesc(proto)|Operator(cpp)|
 
 
-## Definition of VarDesc
+## Definition of VarType
 
-A VarDesc should have a name, and value. The are two kinds of variable type in compile time, they are `LoDTensor` and `SelectedRows`. 
+A VarDesc should have a name, type and whether or not it is persistable. The are different kinds of variable types supported in PaddlePaddle, apart from the POD_Types like: `LOD_TENSOR`, `SELECTED_ROWS`, `FEED_MINIBATCH`, `FETCH_LIST`, `STEP_SCOPES`, `LOD_RANK_TABLE`, `LOD_TENSOR_ARRAY`, `PLACE_LIST`, `READER` and `CHANNEL`. These are declared inside `VarType`. A `VarDesc` then looks as the following:
 
 ```proto
 message VarDesc {
   required string name = 1;
-  enum VarType {
-    LOD_TENSOR = 0;
-    SELECTED_ROWS = 1;
-  }
   required VarType type = 2;
-  optional LoDTensorDesc lod_desc = 3;
-  optional TensorDesc selected_rows_desc = 4;
-  optional bool persistable = 5 [ default = false ];
+  optional bool persistable = 3 [ default = false ];
 }
 ```
 
 ## Definition of TensorDesc
 
 ```proto
-enum DataType {
+message TensorDesc {
+  // Should only be PODType. Is enforced in C++
+  required Type data_type = 1;
+  repeated int64 dims = 2; // [UNK, 640, 480] is saved as [-1, 640, 480]
+}
+```
+
+The `Type` here comes from the enum defined inside of `VarType` :
+
+```proto
+enum Type {
+  // Pod Types
   BOOL = 0;
   INT16 = 1;
   INT32 = 2;
@@ -43,11 +48,18 @@ enum DataType {
   FP16 = 4;
   FP32 = 5;
   FP64 = 6;
-}
 
-message TensorDesc {
-  required DataType data_type = 1;
-  repeated int64 dims = 2; // [UNK, 640, 480] is saved as [-1, 640, 480]
+  // Other types that may need additional descriptions
+  LOD_TENSOR = 7;
+  SELECTED_ROWS = 8;
+  FEED_MINIBATCH = 9;
+  FETCH_LIST = 10;
+  STEP_SCOPES = 11;
+  LOD_RANK_TABLE = 12;
+  LOD_TENSOR_ARRAY = 13;
+  PLACE_LIST = 14;
+  READER = 15;
+  CHANNEL = 16;
 }
 ```
 
@@ -58,7 +70,7 @@ A TensorDesc describes `SelectedRows` and `LoDTensor`. For details of `SelectedR
 ```proto
 message LoDTensorDesc {
   required TensorDesc tensor = 1;
-  optional int lod_level = 2;
+  optional int32 lod_level = 2 [ default = 0 ];
 }
 ```
 

doc/faq/local/src/reduce_min_pool_size.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/faq/local/src/word2vec_config.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/faq/local/src/word2vec_dataprovider.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/getstarted/concepts/src/infer.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/getstarted/concepts/src/train.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/howto/cluster/fluid_cluster_train_en.md

@@ -32,7 +32,7 @@ The non-cluster version of this demo with fluid API is as follows:
 
 ``` python
 import paddle.v2 as paddle
-import paddle.v2.fluid as fluid
+import paddle.fluid as fluid
 
 x = fluid.layers.data(name='x', shape=[13], dtype='float32')
 y_predict = fluid.layers.fc(input=x, size=1, act=None)
@@ -125,11 +125,11 @@ for pass_id in range(100):
 
 ### E2E demo
 
-Please find the complete demo from [here](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/tests/book_distribute/notest_dist_fit_a_line.py).
+Please find the complete demo from [here](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/fluid/tests/book_distribute/notest_dist_fit_a_line.py).
 First `cd` into the folder that contains the `python` files. In this case:
 
 ```bash
-cd /paddle/python/paddle/v2/fluid/tests/book_distribute
+cd /paddle/python/paddle/fluid/tests/book_distribute
 ```
 
 In parameter server node run the following in the command line:

doc/howto/cluster/src/word2vec/api_train_v2.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/howto/cluster/src/word2vec/api_train_v2_cluster.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/howto/cluster/src/word2vec/prepare.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

doc/howto/optimization/cpu_profiling_cn.md

@@ -35,7 +35,7 @@ cprofilev -a 0.0.0.0 -p 3214 -f profile.out main.py
 ```
    ncalls  tottime  percall  cumtime  percall filename:lineno(function)
         1    0.284    0.284   29.514   29.514 main.py:1(<module>)
-     4696    0.128    0.000   15.748    0.003 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/executor.py:20(run)
+     4696    0.128    0.000   15.748    0.003 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/executor.py:20(run)
      4696   12.040    0.003   12.040    0.003 {built-in method run}
         1    0.144    0.144    6.534    6.534 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/__init__.py:14(<module>)
 ```
@@ -61,9 +61,9 @@ cprofilev -a 0.0.0.0 -p 3214 -f profile.out main.py
 ```text
      4696   12.040    0.003   12.040    0.003 {built-in method run}
    300005    0.874    0.000    1.681    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/dataset/mnist.py:38(reader)
-   107991    0.676    0.000    1.519    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:219(__init__)
-     4697    0.626    0.000    2.291    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:428(sync_with_cpp)
-        1    0.618    0.618    0.618    0.618 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/__init__.py:1(<module>)
+   107991    0.676    0.000    1.519    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:219(__init__)
+     4697    0.626    0.000    2.291    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:428(sync_with_cpp)
+        1    0.618    0.618    0.618    0.618 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/__init__.py:1(<module>)
 ```
 
 可以看到最耗时的函数是C++端的`run`函数。这需要联合我们第二节`Python`与`C++`混合代码的性能分析来进行调优。而`sync_with_cpp`函数的总共耗时很长，每次调用的耗时也很长。于是我们可以点击`sync_with_cpp`的详细信息，了解其调用关系。
@@ -76,9 +76,9 @@ Called By:
 
 Function                                                                                                 was called by...
                                                                                                              ncalls  tottime  cumtime
-/home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:428(sync_with_cpp)  <-    4697    0.626    2.291  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:562(sync_with_cpp)
-/home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:562(sync_with_cpp)  <-    4696    0.019    2.316  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:487(clone)
-                                                                                                                  1    0.000    0.001  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:534(append_backward)
+/home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:428(sync_with_cpp)  <-    4697    0.626    2.291  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:562(sync_with_cpp)
+/home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:562(sync_with_cpp)  <-    4696    0.019    2.316  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:487(clone)
+                                                                                                                  1    0.000    0.001  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:534(append_backward)
 
 
 Called:

doc/howto/optimization/cpu_profiling_en.md

@@ -49,7 +49,7 @@ port, we will see the output like the following:
 ```
    ncalls  tottime  percall  cumtime  percall filename:lineno(function)
         1    0.284    0.284   29.514   29.514 main.py:1(<module>)
-     4696    0.128    0.000   15.748    0.003 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/executor.py:20(run)
+     4696    0.128    0.000   15.748    0.003 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/executor.py:20(run)
      4696   12.040    0.003   12.040    0.003 {built-in method run}
         1    0.144    0.144    6.534    6.534 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/__init__.py:14(<module>)
 ```
@@ -74,9 +74,9 @@ focus on. We can sort above profiling file by tottime:
 ```text
      4696   12.040    0.003   12.040    0.003 {built-in method run}
    300005    0.874    0.000    1.681    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/dataset/mnist.py:38(reader)
-   107991    0.676    0.000    1.519    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:219(__init__)
-     4697    0.626    0.000    2.291    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:428(sync_with_cpp)
-        1    0.618    0.618    0.618    0.618 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/__init__.py:1(<module>)
+   107991    0.676    0.000    1.519    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:219(__init__)
+     4697    0.626    0.000    2.291    0.000 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:428(sync_with_cpp)
+        1    0.618    0.618    0.618    0.618 /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/__init__.py:1(<module>)
 ```
 
 We can see that the most time-consuming function is the `built-in
@@ -93,9 +93,9 @@ Called By:
 
 Function                                                                                                 was called by...
                                                                                                              ncalls  tottime  cumtime
-/home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:428(sync_with_cpp)  <-    4697    0.626    2.291  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:562(sync_with_cpp)
-/home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:562(sync_with_cpp)  <-    4696    0.019    2.316  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:487(clone)
-                                                                                                                  1    0.000    0.001  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/v2/fluid/framework.py:534(append_backward)
+/home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:428(sync_with_cpp)  <-    4697    0.626    2.291  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:562(sync_with_cpp)
+/home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:562(sync_with_cpp)  <-    4696    0.019    2.316  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:487(clone)
+                                                                                                                  1    0.000    0.001  /home/yuyang/perf_test/.env/lib/python2.7/site-packages/paddle/fluid/framework.py:534(append_backward)
 
 
 Called:

doc/howto/read_source.md

 # PaddlePaddle Fluid Source Code Overview
 
-Examples: https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/tests/book
+Examples: https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/fluid/tests/book
 
 Core: https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/framework
 
@@ -26,16 +26,16 @@ sgd_optimizer = fluid.optimizer.SGD(learning_rate=0.001)
 sgd_optimizer.minimize(avg_cost)
 ```
 
-- Variables: `x`,  `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/framework.py#)
-- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/v2/fluid/layers)
+- Variables: `x`,  `y`, `y_predict`, `cost` and `avg_cost`. [Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/fluid/framework.py#)
+- Layers: `fluid.layers.data`, `fluid.layers.fc` and `fluid.layers.mean` are layers. [Python](https://github.com/PaddlePaddle/Paddle/tree/develop/python/paddle/fluid/layers)
   - Every Layer has one or more operators and variables/parameters
     - All the operators are defined at [`paddle/operators/`](https://github.com/PaddlePaddle/Paddle/tree/develop/paddle/operators). Other worth-looking files:
       - Base class: [`paddle/framework/operator.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/operator.h)
       - Operator Registration: [`paddle/framework/op_registry.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/op_registry.h) 
       - Operator Lookup: [`paddle/framework/op_info.h`](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/op_info.h)
 - Optimizer: `fluid.optimizer.SGD`. It does the following
-  - Add backward operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/backward.py)]
-  - Add optimizer operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/optimizer.py)]
+  - Add backward operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/fluid/backward.py)]
+  - Add optimizer operators. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/fluid/optimizer.py)]
 
 # Run Time
 
@@ -57,7 +57,7 @@ exe.run(fluid.default_main_program(),
 
 - Place: `place`. one of CPU, GPU or FPGA. [C++](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/platform/place.h)
   - The device handle are at [paddle/platform/device_context.h](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/platform/device_context.h)
-- Executor: `fluid.Executor(place)`. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/v2/fluid/executor.py), [C++](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/executor.cc)]
+- Executor: `fluid.Executor(place)`. [[Python](https://github.com/PaddlePaddle/Paddle/blob/develop/python/paddle/fluid/executor.py), [C++](https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/executor.cc)]
   - Feeds the data: `feed=feeder.feed(data)`
   - Evaluates all the operators
   - Fetches the result: `fetch_list=[avg_cost]`

doc/templates/conf.py.cn.in

@@ -18,6 +18,7 @@ import shlex
 from recommonmark import parser, transform
 import paddle
 import paddle.v2
+import paddle.fluid
 
 MarkdownParser = parser.CommonMarkParser
 AutoStructify = transform.AutoStructify

doc/templates/conf.py.en.in

@@ -18,6 +18,7 @@ import shlex
 from recommonmark import parser, transform
 import paddle
 import paddle.v2
+import paddle.fluid
 
 
 MarkdownParser = parser.CommonMarkParser

go/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/cmd/master/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/cmd/master/master.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/cmd/pserver/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/cmd/pserver/pserver.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/connection/conn.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/master/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/master/c/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/master/c/client.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/master/client.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/master/client_internal_test.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/master/client_test.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/master/etcd_client.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/master/inmem_store.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/master/service.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/master/service_internal_test.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/pserver/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/pserver/client/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/pserver/client/c/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/pserver/client/c/cclient.go

-// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+// Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

go/pserver/client/c/test/CMakeLists.txt

-# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+# Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

go/pserver/client/c/test/test_cclient.c

-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

go/pserver/client/c/test/test_mnist.py

-#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserve.
+#   Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.