diff --git a/paddle/fluid/API.spec b/paddle/fluid/API.spec
index 69d665b80fde22c10d9d57687b0e45dae7291969..6efb03dabe89b28f3ff1a55c4a940dfe74e8001d 100644
--- a/paddle/fluid/API.spec
+++ b/paddle/fluid/API.spec
@@ -1,8 +1,3 @@
-paddle.fluid.Variable.__init__ ArgSpec(args=['self', 'block', 'type', 'name', 'shape', 'dtype', 'lod_level', 'capacity', 'persistable', 'error_clip', 'stop_gradient', 'is_data'], varargs=None, keywords='kwargs', defaults=(VarType.LOD_TENSOR, None, None, None, None, None, None, None, False, False))
-paddle.fluid.Variable.astype ArgSpec(args=['self', 'dtype'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Variable.set_desc ArgSpec(args=['self', 'input'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Variable.set_error_clip ArgSpec(args=['self', 'error_clip'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Variable.to_string ArgSpec(args=['self', 'throw_on_error', 'with_details'], varargs=None, keywords=None, defaults=(False,))
 paddle.fluid.Program.__init__ ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Program.block ArgSpec(args=['self', 'index'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Program.clone ArgSpec(args=['self', 'for_test'], varargs=None, keywords=None, defaults=(False,))
@@ -33,8 +28,6 @@ paddle.fluid.Operator.set_attr ArgSpec(args=['self', 'name', 'val'], varargs=Non
 paddle.fluid.Operator.to_string ArgSpec(args=['self', 'throw_on_error'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Parameter.__init__ ArgSpec(args=['self', 'block', 'shape', 'dtype'], varargs=None, keywords='kwargs', defaults=None)
 paddle.fluid.Parameter.astype ArgSpec(args=['self', 'dtype'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Parameter.set_desc ArgSpec(args=['self', 'input'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Parameter.set_error_clip ArgSpec(args=['self', 'error_clip'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Parameter.to_string ArgSpec(args=['self', 'throw_on_error', 'with_details'], varargs=None, keywords=None, defaults=(False,))
 paddle.fluid.default_startup_program ArgSpec(args=[], varargs=None, keywords=None, defaults=None)
 paddle.fluid.default_main_program ArgSpec(args=[], varargs=None, keywords=None, defaults=None)
@@ -42,8 +35,7 @@ paddle.fluid.program_guard ArgSpec(args=[], varargs='args', keywords='kwds', def
 paddle.fluid.get_var ArgSpec(args=['name', 'program'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.Executor.__init__ ArgSpec(args=['self', 'place'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Executor.as_lodtensor ArgSpec(args=['self', 'data'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Executor.begin_pass ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Executor.end_pass ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
+paddle.fluid.Executor.close ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Executor.run ArgSpec(args=['self', 'program', 'feed', 'fetch_list', 'feed_var_name', 'fetch_var_name', 'scope', 'return_numpy', 'use_program_cache'], varargs=None, keywords=None, defaults=(None, None, None, 'feed', 'fetch', None, True, False))
 paddle.fluid.global_scope ArgSpec(args=[], varargs=None, keywords=None, defaults=None)
 paddle.fluid.scope_guard ArgSpec(args=[], varargs='args', keywords='kwds', defaults=None)
@@ -207,31 +199,23 @@ paddle.fluid.layers.argsort ArgSpec(args=['input', 'axis', 'name'], varargs=None
 paddle.fluid.layers.ones ArgSpec(args=['shape', 'dtype', 'force_cpu'], varargs=None, keywords=None, defaults=(False,))
 paddle.fluid.layers.zeros ArgSpec(args=['shape', 'dtype', 'force_cpu'], varargs=None, keywords=None, defaults=(False,))
 paddle.fluid.layers.reverse ArgSpec(args=['x', 'axis'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.layers.split_lod_tensor ArgSpec(args=['input', 'mask', 'level'], varargs=None, keywords=None, defaults=(0,))
-paddle.fluid.layers.merge_lod_tensor ArgSpec(args=['in_true', 'in_false', 'x', 'mask', 'level'], varargs=None, keywords=None, defaults=(0,))
 paddle.fluid.layers.While.__init__ ArgSpec(args=['self', 'cond', 'name'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.layers.While.block ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.While.complete ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.Switch.__init__ ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.layers.Switch.case ArgSpec(args=['self', 'condition'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.Switch.default ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.layers.lod_rank_table ArgSpec(args=['x', 'level'], varargs=None, keywords=None, defaults=(0,))
-paddle.fluid.layers.max_sequence_len ArgSpec(args=['rank_table'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.layers.lod_tensor_to_array ArgSpec(args=['x', 'table'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.layers.array_to_lod_tensor ArgSpec(args=['x', 'table'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.increment ArgSpec(args=['x', 'value', 'in_place'], varargs=None, keywords=None, defaults=(1.0, True))
 paddle.fluid.layers.array_write ArgSpec(args=['x', 'i', 'array'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.layers.create_array ArgSpec(args=['dtype'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.less_than ArgSpec(args=['x', 'y', 'force_cpu', 'cond'], varargs=None, keywords='ignored', defaults=(None, None))
 paddle.fluid.layers.equal ArgSpec(args=['x', 'y', 'cond'], varargs=None, keywords='ignored', defaults=(None,))
 paddle.fluid.layers.array_read ArgSpec(args=['array', 'i'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.layers.shrink_memory ArgSpec(args=['x', 'i', 'table'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.array_length ArgSpec(args=['array'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.IfElse.__init__ ArgSpec(args=['self', 'cond', 'name'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.layers.IfElse.false_block ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.IfElse.input ArgSpec(args=['self', 'x'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.IfElse.output ArgSpec(args=['self'], varargs='outs', keywords=None, defaults=None)
-paddle.fluid.layers.IfElse.parent_block ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.IfElse.true_block ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.DynamicRNN.__init__ ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.layers.DynamicRNN.block ArgSpec(args=[], varargs='args', keywords='kwds', defaults=None)
@@ -240,9 +224,6 @@ paddle.fluid.layers.DynamicRNN.output ArgSpec(args=['self'], varargs='outputs',
 paddle.fluid.layers.DynamicRNN.static_input ArgSpec(args=['self', 'x'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.DynamicRNN.step_input ArgSpec(args=['self', 'x'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.DynamicRNN.update_memory ArgSpec(args=['self', 'ex_mem', 'new_mem'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.layers.ConditionalBlock.__init__ ArgSpec(args=['self', 'inputs', 'is_scalar_condition', 'name'], varargs=None, keywords=None, defaults=(False, None))
-paddle.fluid.layers.ConditionalBlock.block ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.layers.ConditionalBlock.complete ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.StaticRNN.__init__ ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.layers.StaticRNN.complete_op ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.layers.StaticRNN.memory ArgSpec(args=['self', 'init', 'shape', 'batch_ref', 'init_value', 'init_batch_dim_idx', 'ref_batch_dim_idx'], varargs=None, keywords=None, defaults=(None, None, None, 0.0, 0, 1))
diff --git a/paddle/fluid/framework/executor.cc b/paddle/fluid/framework/executor.cc
index 84f67fafa19ac545ebb7a1019059e3c74c363c56..c2800c972a5501859672fbfd6921499e84d09cb0 100644
--- a/paddle/fluid/framework/executor.cc
+++ b/paddle/fluid/framework/executor.cc
@@ -45,19 +45,13 @@ ExecutorPrepareContext::~ExecutorPrepareContext() {
 
 Executor::Executor(const platform::Place& place) : place_(place) {}
 
+void Executor::Close() {
 #ifdef PADDLE_WITH_DISTRIBUTE
-void Executor::BeginPass() {
   ::paddle::operators::distributed::RPCClient::GetInstance<
       ::paddle::operators::distributed::GRPCClient>()
-      ->SendBeginPass();
-}
-
-void Executor::EndPass() {
-  ::paddle::operators::distributed::RPCClient::GetInstance<
-      ::paddle::operators::distributed::GRPCClient>()
-      ->SendEndPass();
-}
+      ->SendComplete();
 #endif
+}
 
 void InitializeVariable(Variable* var, proto::VarType::Type var_type) {
   if (var_type == proto::VarType::LOD_TENSOR) {
diff --git a/paddle/fluid/framework/executor.h b/paddle/fluid/framework/executor.h
index 563a4b2bb65dad481a755f67c7f23939816ce8e8..214ca3dc492c31d4c683790a6ae051be467401c9 100644
--- a/paddle/fluid/framework/executor.h
+++ b/paddle/fluid/framework/executor.h
@@ -44,17 +44,11 @@ class Executor {
 
   explicit Executor(const platform::Place& place);
 
-#ifdef PADDLE_WITH_DISTRIBUTE
   /*
-   * Sending signal to pserver to mark current pass started.
+   * Close this Executor.
+   * Calling this method will send complete messages to all pserver instances.
    */
-  void BeginPass();
-
-  /*
-   * Sending signal to pserver to mark current pass finished.
-   */
-  void EndPass();
-#endif
+  void Close();
 
   /* @Brief
    * Runtime evaluation of the given ProgramDesc under certain Scope
diff --git a/paddle/fluid/inference/api/api_impl.cc b/paddle/fluid/inference/api/api_impl.cc
index 3ae255e13fc4f3ca28a6af62a5d5944d84303fc7..58fd7c6f8b05a846bd4a82068f09f5d9ef5a6516 100644
--- a/paddle/fluid/inference/api/api_impl.cc
+++ b/paddle/fluid/inference/api/api_impl.cc
@@ -137,6 +137,7 @@ bool NativePaddlePredictor::Run(const std::vector<PaddleTensor> &inputs,
   executor_->RunPreparedContext(
       ctx_.get(), sub_scope_ != nullptr ? sub_scope_ : scope_.get(),
       &feed_targets, &fetch_targets,
+      false, /* don't create local scope each time*/
       false /* don't create variable eatch time */);
   VLOG(4) << "Finish prepared context";
   if (!GetFetch(fetchs, output_data)) {
diff --git a/paddle/fluid/inference/tensorrt/convert/fc_op.cc b/paddle/fluid/inference/tensorrt/convert/fc_op.cc
index bb603efaf30bb72d74b5583abc45d01a16c076a3..409efac6799b6fb8d27a1343a55e7a508760868f 100644
--- a/paddle/fluid/inference/tensorrt/convert/fc_op.cc
+++ b/paddle/fluid/inference/tensorrt/convert/fc_op.cc
@@ -32,11 +32,11 @@ void Reorder2(nvinfer1::DimsHW shape, const T* idata, nvinfer1::DimsHW istrides,
   for (int h = 0; h < shape.h(); ++h) {
     for (int w = 0; w < shape.w(); ++w) {
       odata[h * ostrides.h() + w * ostrides.w()] =
-          idata[h * ostrides.h() + w * ostrides.w()];
+          idata[h * istrides.h() + w * istrides.w()];
     }
   }
 }
-
+// indata c * k
 // Reorder the data layout from CK to KC.
 void ReorderCKtoKC(TensorRTEngine::Weight& iweights,
                    TensorRTEngine::Weight* oweights) {
@@ -79,9 +79,8 @@ class FcOpConverter : public OpConverter {
 
     framework::LoDTensor tmp;
     tmp.Resize(Y_t->dims());
-    memcpy(tmp.mutable_data<float>(platform::CPUPlace()), Y_t->data<float>(),
-           Y_t->dims()[0] * Y_t->dims()[1]);
-
+    memcpy(tmp.mutable_data<float>(platform::CPUPlace()), weight_data,
+           Y_t->dims()[0] * Y_t->dims()[1] * sizeof(float));
     TensorRTEngine::Weight weight{nvinfer1::DataType::kFLOAT,
                                   static_cast<void*>(weight_data),
                                   Y_t->memory_size() / sizeof(float)};
@@ -93,7 +92,7 @@ class FcOpConverter : public OpConverter {
 
     // The data layout of TRT FC layer's weight is different from fluid's FC,
     // need to reorder the elements.
-    ReorderCKtoKC(tmp_weight, &weight);
+    ReorderCKtoKC(weight, &tmp_weight);
 
     // Currently, the framework can only handle one fluid op -> one TRT layer,
     // but fc fuses `mul` and `bias` (2 fluid ops), so here is a trick, just
@@ -103,7 +102,7 @@ class FcOpConverter : public OpConverter {
 
     auto* layer = TRT_ENGINE_ADD_LAYER(engine_, FullyConnected,
                                        *const_cast<nvinfer1::ITensor*>(X),
-                                       n_output, weight.get(), bias.get());
+                                       n_output, tmp_weight.get(), bias.get());
 
     auto output_name = op_desc.Output("Out").front();
     engine_->SetITensor(output_name, layer->getOutput(0));
@@ -118,4 +117,3 @@ class FcOpConverter : public OpConverter {
 }  // namespace paddle
 
 REGISTER_TRT_OP_CONVERTER(fc, FcOpConverter);
-USE_OP(mul);
diff --git a/paddle/fluid/inference/tensorrt/convert/test_activation_op.cc b/paddle/fluid/inference/tensorrt/convert/test_activation_op.cc
index 0a02a7bebf9efbd0555707e6cfa701ef1e7d9659..7dabfd9f6a9a8cfbdd1d9a66541180d3499b7bdc 100644
--- a/paddle/fluid/inference/tensorrt/convert/test_activation_op.cc
+++ b/paddle/fluid/inference/tensorrt/convert/test_activation_op.cc
@@ -37,7 +37,7 @@ TEST(ReluOpConverter, main) {
   validator.SetOp(*desc.Proto());
   LOG(INFO) << "execute";
 
-  validator.Execute(10);
+  validator.Execute(1);
 }
 
 }  // namespace tensorrt
diff --git a/paddle/fluid/inference/tensorrt/convert/test_fc_op.cc b/paddle/fluid/inference/tensorrt/convert/test_fc_op.cc
index a30253072ac581ceca85ca10151a176f87a7cb39..081f4d605975f1408d4d8a8ed3108c04d837a4de 100644
--- a/paddle/fluid/inference/tensorrt/convert/test_fc_op.cc
+++ b/paddle/fluid/inference/tensorrt/convert/test_fc_op.cc
@@ -23,11 +23,11 @@ namespace tensorrt {
 TEST(fc_op, test) {
   std::unordered_set<std::string> parameters({"mul-Y"});
   framework::Scope scope;
-  TRTConvertValidation validator(20, parameters, scope, 1000);
-
-  validator.DeclInputVar("mul-X", nvinfer1::Dims4(8, 3, 1, 1));
-  validator.DeclParamVar("mul-Y", nvinfer1::Dims2(3, 2));
-  validator.DeclOutputVar("mul-Out", nvinfer1::Dims2(8, 2));
+  TRTConvertValidation validator(10, parameters, scope, 1000);
+  validator.DeclInputVar("mul-X", nvinfer1::Dims4(1, 10, 1, 1));
+  validator.DeclParamVar("mul-Y", nvinfer1::Dims2(10, 2));
+  // validator.DeclParamVar("mul-Y", nvinfer1::Dims2(8, 2));
+  validator.DeclOutputVar("mul-Out", nvinfer1::Dims2(1, 2));
 
   // Prepare Op description
   framework::OpDesc desc;
@@ -38,9 +38,10 @@ TEST(fc_op, test) {
 
   validator.SetOp(*desc.Proto());
 
-  validator.Execute(10);
+  validator.Execute(1);
 }
 
 }  // namespace tensorrt
 }  // namespace inference
 }  // namespace paddle
+USE_OP(mul);
diff --git a/paddle/fluid/inference/tensorrt/convert/test_mul_op.cc b/paddle/fluid/inference/tensorrt/convert/test_mul_op.cc
index 1ce1130e5d660d717a1262a1fbdb4b620462c0b3..674f37f2fdddf013a8f6f4671debbc19c3322423 100644
--- a/paddle/fluid/inference/tensorrt/convert/test_mul_op.cc
+++ b/paddle/fluid/inference/tensorrt/convert/test_mul_op.cc
@@ -39,7 +39,7 @@ TEST(MulOpConverter, main) {
   validator.SetOp(*desc.Proto());
   LOG(INFO) << "execute";
 
-  validator.Execute(10);
+  validator.Execute(1);
 }
 
 }  // namespace tensorrt
diff --git a/paddle/fluid/inference/tensorrt/convert/ut_helper.h b/paddle/fluid/inference/tensorrt/convert/ut_helper.h
index 3b1f531adc5d756259df1c350f7f44bf71ee1f93..f14885b238134cdf38a278cd8a0734947bcacfe0 100644
--- a/paddle/fluid/inference/tensorrt/convert/ut_helper.h
+++ b/paddle/fluid/inference/tensorrt/convert/ut_helper.h
@@ -39,7 +39,7 @@ namespace tensorrt {
 float random(float low, float high) {
   static std::random_device rd;
   static std::mt19937 mt(rd());
-  std::uniform_real_distribution<double> dist(1.0, 10.0);
+  std::uniform_real_distribution<double> dist(low, high);
   return dist(mt);
 }
 
@@ -49,6 +49,7 @@ void RandomizeTensor(framework::LoDTensor* tensor, const platform::Place& place,
   size_t num_elements = analysis::AccuDims(dims, dims.size());
   PADDLE_ENFORCE_GT(num_elements, 0);
   auto* data = tensor->mutable_data<float>(place);
+
   for (size_t i = 0; i < num_elements; i++) {
     *(data + i) = random(0., 1.);
   }
@@ -68,7 +69,7 @@ class TRTConvertValidation {
                        int workspace_size = 1 << 10)
       : parameters_(parameters), scope_(scope) {
     // create engine.
-    engine_.reset(new TensorRTEngine(10, 1 << 10, &stream_));
+    engine_.reset(new TensorRTEngine(batch_size, workspace_size, &stream_));
     engine_->InitNetwork();
 
     PADDLE_ENFORCE_EQ(cudaStreamCreate(&stream_), 0);
@@ -138,12 +139,11 @@ class TRTConvertValidation {
     cudaStreamSynchronize(*engine_->stream());
 
     ASSERT_FALSE(op_desc_->OutputArgumentNames().empty());
-    const size_t output_space_size = 200;
+    const size_t output_space_size = 2000;
     for (const auto& output : op_desc_->OutputArgumentNames()) {
       std::vector<float> fluid_out;
       std::vector<float> trt_out(output_space_size);
-      engine_->GetOutputInCPU(output, &trt_out[0],
-                              output_space_size * sizeof(float));
+      engine_->GetOutputInCPU(output, &trt_out[0], output_space_size);
       cudaStreamSynchronize(*engine_->stream());
 
       auto* var = scope_.FindVar(output);
diff --git a/paddle/fluid/inference/tensorrt/engine.cc b/paddle/fluid/inference/tensorrt/engine.cc
index fefec0df6d03669a294ce9643b666d7416593708..b821c3d0bf425c46fae634fbf53f7ee63100ca5c 100644
--- a/paddle/fluid/inference/tensorrt/engine.cc
+++ b/paddle/fluid/inference/tensorrt/engine.cc
@@ -1,7 +1,7 @@
 /* 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.
+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
@@ -26,6 +26,8 @@ namespace paddle {
 namespace inference {
 namespace tensorrt {
 
+int TensorRTEngine::runtime_batch_ = 1;
+
 void TensorRTEngine::Build(const DescType &paddle_model) {
   PADDLE_ENFORCE(false, "not implemented");
 }
@@ -42,6 +44,7 @@ void TensorRTEngine::Execute(int batch_size) {
   PADDLE_ENFORCE_NOT_NULL(stream_);
   infer_context_->enqueue(batch_size, buffers.data(), *stream_, nullptr);
   cudaStreamSynchronize(*stream_);
+  SetRuntimeBatch(batch_size);
 }
 
 TensorRTEngine::~TensorRTEngine() {
@@ -80,17 +83,17 @@ void TensorRTEngine::FreezeNetwork() {
       auto dims = infer_engine_->getBindingDimensions(slot_offset);
       item.second = kDataTypeSize[static_cast<int>(
                         infer_engine_->getBindingDataType(slot_offset))] *
-                    analysis::AccuDims(dims.d, dims.nbDims);
+                    analysis::AccuDims(dims.d, dims.nbDims) * max_batch_;
       PADDLE_ENFORCE_GT(item.second, 0);
     }
 
     auto &buf = buffer(item.first);
     buf.max_size = item.second * max_batch_;
     CHECK(buf.buffer == nullptr);  // buffer should be allocated only once.
-    PADDLE_ENFORCE_EQ(0, cudaMalloc(&buf.buffer, buf.max_size));
-    PADDLE_ENFORCE_LE(buf.max_size, 1 << 30);  // 10G
-    // buf.size will changed in the runtime.
+
+    PADDLE_ENFORCE_EQ(0, cudaMalloc(&buf.buffer, item.second * max_batch_));
     buf.size = 0;
+    PADDLE_ENFORCE_LE(buf.max_size, 1 << 30);  // 10G
     buf.device = DeviceType::GPU;
   }
 }
@@ -105,7 +108,7 @@ nvinfer1::ITensor *TensorRTEngine::DeclareInput(const std::string &name,
   auto *input = infer_network_->addInput(name.c_str(), dtype, dims);
   PADDLE_ENFORCE(input, "infer network add input %s failed", name);
   buffer_sizes_[name] = kDataTypeSize[static_cast<int>(dtype)] *
-                        analysis::AccuDims(dims.d, dims.nbDims);
+                        analysis::AccuDims(dims.d, dims.nbDims) * max_batch_;
   PADDLE_ENFORCE(input->isNetworkInput());
   TensorRTEngine::SetITensor(name, input);
   return input;
@@ -149,35 +152,42 @@ void *TensorRTEngine::GetOutputInGPU(const std::string &name) {
 void TensorRTEngine::GetOutputInGPU(const std::string &name, void *dst,
                                     size_t max_size) {
   // determine data size
+  auto *output = TensorRTEngine::GetITensor(name);
+  nvinfer1::Dims dims = output->getDimensions();
+  auto dim_size = analysis::AccuDims(dims.d, dims.nbDims);
+  size_t dst_size = dim_size * runtime_batch_ *
+                    kDataTypeSize[static_cast<int>(output->getType())];
+
   auto it = buffer_sizes_.find(name);
   PADDLE_ENFORCE(it != buffer_sizes_.end());
   PADDLE_ENFORCE_GT(it->second, 0);
-  PADDLE_ENFORCE_GE(max_size, it->second);
+  PADDLE_ENFORCE_LE(dst_size, it->second);
+  PADDLE_ENFORCE_GE(max_size, dst_size);
   auto &buf = buffer(name);
   PADDLE_ENFORCE_NOT_NULL(buf.buffer, "buffer should be allocated before");
-  PADDLE_ENFORCE_EQ(cudaMemcpyAsync(dst, buf.buffer, it->second,
+  PADDLE_ENFORCE_EQ(cudaMemcpyAsync(dst, buf.buffer, dst_size,
                                     cudaMemcpyDeviceToDevice, *stream_),
                     0);
 }
 
 void TensorRTEngine::GetOutputInCPU(const std::string &name, void *dst,
                                     size_t max_size) {
-  VLOG(4) << "get output in cpu";
-  auto &buf = buffer(name);
-
-  // Update needed buffer size.
-  auto slot_offset = infer_engine_->getBindingIndex(name.c_str());
-  auto dims = infer_engine_->getBindingDimensions(slot_offset);
-  buf.size = kDataTypeSize[static_cast<int>(
-                 infer_engine_->getBindingDataType(slot_offset))] *
-             analysis::AccuDims(dims.d, dims.nbDims);
-  PADDLE_ENFORCE_LE(buf.size, buf.max_size);
   // determine data size
+
+  auto *output = TensorRTEngine::GetITensor(name);
+  nvinfer1::Dims dims = output->getDimensions();
+  auto dim_size = analysis::AccuDims(dims.d, dims.nbDims);
+  size_t dst_size = dim_size * runtime_batch_ *
+                    kDataTypeSize[static_cast<int>(output->getType())];
+  auto it = buffer_sizes_.find(name);
+  PADDLE_ENFORCE(it != buffer_sizes_.end());
+  PADDLE_ENFORCE_GT(it->second, 0);
+  PADDLE_ENFORCE_LE(dst_size, it->second);
+  PADDLE_ENFORCE_GE(max_size, dst_size);
+  auto &buf = buffer(name);
   PADDLE_ENFORCE_NOT_NULL(buf.buffer, "buffer should be allocated before");
-  // DEBUG
-  memset(dst, 0, buf.size);
-  PADDLE_ENFORCE_EQ(
-      0, cudaMemcpy(dst, buf.buffer, buf.size, cudaMemcpyDeviceToHost));
+  PADDLE_ENFORCE_EQ(0, cudaMemcpyAsync(dst, buf.buffer, dst_size,
+                                       cudaMemcpyDeviceToHost, *stream_));
 }
 
 Buffer &TensorRTEngine::buffer(const std::string &name) {
@@ -225,6 +235,12 @@ nvinfer1::ITensor *TensorRTEngine::GetITensor(const std::string &name) {
   return itensor_map_[name];
 }
 
+void TensorRTEngine::SetRuntimeBatch(size_t batch_size) {
+  runtime_batch_ = batch_size;
+}
+
+int TensorRTEngine::GetRuntimeBatch() { return runtime_batch_; }
+
 }  // namespace tensorrt
 }  // namespace inference
 }  // namespace paddle
diff --git a/paddle/fluid/inference/tensorrt/engine.h b/paddle/fluid/inference/tensorrt/engine.h
index 7064d333f6db754f88c0ac6956a9527a48bf866c..694468c419c20089de1cdecff1a903ad0cc6e99f 100644
--- a/paddle/fluid/inference/tensorrt/engine.h
+++ b/paddle/fluid/inference/tensorrt/engine.h
@@ -117,10 +117,14 @@ class TensorRTEngine : public EngineBase {
 
   nvinfer1::ICudaEngine* engine() { return infer_engine_.get(); }
   nvinfer1::INetworkDefinition* network() { return infer_network_.get(); }
+  void SetRuntimeBatch(size_t batch_size);
+  int GetRuntimeBatch();
 
  private:
   // the max batch size
   int max_batch_;
+  // the runtime batch size
+  static int runtime_batch_;
   // the max memory size the engine uses
   int max_workspace_;
 
diff --git a/paddle/fluid/inference/tensorrt/test_engine.cc b/paddle/fluid/inference/tensorrt/test_engine.cc
index fca3488008ed83418b5e28b8af42d8019aaaa2a4..f8732e51b66bdc78aa35d06ba9651f1942a74b01 100644
--- a/paddle/fluid/inference/tensorrt/test_engine.cc
+++ b/paddle/fluid/inference/tensorrt/test_engine.cc
@@ -28,7 +28,7 @@ class TensorRTEngineTest : public ::testing::Test {
  protected:
   void SetUp() override {
     ASSERT_EQ(0, cudaStreamCreate(&stream_));
-    engine_ = new TensorRTEngine(1, 1 << 10, &stream_);
+    engine_ = new TensorRTEngine(10, 1 << 10, &stream_);
     engine_->InitNetwork();
   }
 
@@ -71,7 +71,7 @@ TEST_F(TensorRTEngineTest, add_layer) {
 
   LOG(INFO) << "to get output";
   float y_cpu;
-  engine_->GetOutputInCPU("y", &y_cpu, sizeof(float));
+  engine_->GetOutputInCPU("y", &y_cpu, 1 * sizeof(float));
 
   LOG(INFO) << "to checkout output";
   ASSERT_EQ(y_cpu, x_v * 2 + 3);
@@ -103,15 +103,49 @@ TEST_F(TensorRTEngineTest, add_layer_multi_dim) {
 
   LOG(INFO) << "to get output";
   float y_cpu[2] = {-1., -1.};
+
   auto dims = engine_->GetITensor("y")->getDimensions();
   ASSERT_EQ(dims.nbDims, 3);
   ASSERT_EQ(dims.d[0], 2);
   ASSERT_EQ(dims.d[1], 1);
-  engine_->GetOutputInCPU("y", &y_cpu[0], sizeof(float) * 2);
+  engine_->GetOutputInCPU("y", &y_cpu[0], 2 * sizeof(float));
   ASSERT_EQ(y_cpu[0], 4.5);
   ASSERT_EQ(y_cpu[1], 14.5);
 }
 
+TEST_F(TensorRTEngineTest, test_conv2d_temp) {
+  // Weight in CPU memory.
+  float raw_weight[9] = {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0};
+  float raw_bias[1] = {0};
+
+  TensorRTEngine::Weight weight(nvinfer1::DataType::kFLOAT, raw_weight, 9);
+  TensorRTEngine::Weight bias(nvinfer1::DataType::kFLOAT, raw_bias, 1);
+  auto* x = engine_->DeclareInput("x", nvinfer1::DataType::kFLOAT,
+                                  nvinfer1::Dims3{1, 3, 3});
+  auto* conv_layer =
+      TRT_ENGINE_ADD_LAYER(engine_, Convolution, *x, 1, nvinfer1::DimsHW{3, 3},
+                           weight.get(), bias.get());
+  PADDLE_ENFORCE(conv_layer != nullptr);
+  conv_layer->setStride(nvinfer1::DimsHW{1, 1});
+  conv_layer->setPadding(nvinfer1::DimsHW{1, 1});
+
+  engine_->DeclareOutput(conv_layer, 0, "y");
+  engine_->FreezeNetwork();
+  ASSERT_EQ(engine_->engine()->getNbBindings(), 2);
+
+  float x_v[18] = {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+                   1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0};
+  engine_->SetInputFromCPU("x", reinterpret_cast<void*>(&x_v),
+                           18 * sizeof(float));
+  engine_->Execute(2);
+
+  LOG(INFO) << "to get output";
+  float* y_cpu = new float[18];
+  engine_->GetOutputInCPU("y", &y_cpu[0], 18 * sizeof(float));
+  ASSERT_EQ(y_cpu[0], 4.0);
+  ASSERT_EQ(y_cpu[1], 6.0);
+}
+
 }  // namespace tensorrt
 }  // namespace inference
 }  // namespace paddle
diff --git a/paddle/fluid/inference/tests/test_helper.h b/paddle/fluid/inference/tests/test_helper.h
index 44c36b1683b037832a218df02184e7cd2ba143e9..695790a37dce889e838462b401ca4e89f09271d5 100644
--- a/paddle/fluid/inference/tests/test_helper.h
+++ b/paddle/fluid/inference/tests/test_helper.h
@@ -210,13 +210,14 @@ void TestInference(const std::string& dirname,
 
     // Ignore the profiling results of the first run
     std::unique_ptr<paddle::framework::ExecutorPrepareContext> ctx;
+    bool CreateLocalScope = CreateVars;
     if (PrepareContext) {
       ctx = executor.Prepare(*inference_program, 0);
       executor.RunPreparedContext(ctx.get(), scope, &feed_targets,
-                                  &fetch_targets, true, CreateVars);
+                                  &fetch_targets, CreateLocalScope, CreateVars);
     } else {
       executor.Run(*inference_program, scope, &feed_targets, &fetch_targets,
-                   true, CreateVars);
+                   CreateLocalScope, CreateVars);
     }
 
     // Enable the profiler
@@ -232,10 +233,11 @@ void TestInference(const std::string& dirname,
         // Note: if you change the inference_program, you need to call
         // executor.Prepare() again to get a new ExecutorPrepareContext.
         executor.RunPreparedContext(ctx.get(), scope, &feed_targets,
-                                    &fetch_targets, CreateVars);
+                                    &fetch_targets, CreateLocalScope,
+                                    CreateVars);
       } else {
         executor.Run(*inference_program, scope, &feed_targets, &fetch_targets,
-                     CreateVars);
+                     CreateLocalScope, CreateVars);
       }
     }
 
diff --git a/paddle/fluid/operators/distributed/CMakeLists.txt b/paddle/fluid/operators/distributed/CMakeLists.txt
index 6555b8101a90bba8351d2c82313ab12e572a01ee..1612927055dd4ec5ee2220bc2b285e8d9b640ea8 100644
--- a/paddle/fluid/operators/distributed/CMakeLists.txt
+++ b/paddle/fluid/operators/distributed/CMakeLists.txt
@@ -18,7 +18,7 @@ if(WITH_GRPC)
   set_source_files_properties(grpc_serde_test.cc rpc_server_test.cc PROPERTIES COMPILE_FLAGS ${DISTRIBUTE_COMPILE_FLAGS})
   cc_test(grpc_serde_test SRCS grpc_serde_test.cc 
      DEPS grpc++_unsecure grpc_unsecure gpr cares zlib protobuf sendrecvop_grpc scope profiler math_function SERIAL)
-  cc_test(grpc_server_test SRCS rpc_server_test.cc 
+  cc_test(rpc_server_test SRCS rpc_server_test.cc 
     DEPS sendrecvop_grpc grpc++_unsecure grpc_unsecure gpr cares zlib protobuf executor  proto_desc lookup_table_op SERIAL)
   return()
 endif()
diff --git a/paddle/fluid/operators/distributed/grpc_client.cc b/paddle/fluid/operators/distributed/grpc_client.cc
index 52c4bc1e7965323438de959d5eb1f3b4ef4f4cfe..265f964ddc682868c64669744b130aebbbf86692 100644
--- a/paddle/fluid/operators/distributed/grpc_client.cc
+++ b/paddle/fluid/operators/distributed/grpc_client.cc
@@ -36,20 +36,16 @@ void GRPCClient::InitEventLoop() {
   client_thread_.reset(new std::thread(std::bind(&GRPCClient::Proceed, this)));
 }
 
-void GRPCClient::SendBeginPass() {
-  for (auto& it : channels_) {
-    VLOG(3) << "send begin pass to: " << it.first;
-    this->AsyncSendBeginPass(it.first);
-  }
-  this->Wait();
-}
-
-void GRPCClient::SendEndPass() {
-  for (auto& it : channels_) {
-    VLOG(3) << "send end pass to " << it.first;
-    this->AsyncSendEndPass(it.first);
+void GRPCClient::SendComplete() {
+  std::unique_lock<std::mutex> lk(completed_mutex_);
+  if (!completed_) {
+    for (auto& it : channels_) {
+      VLOG(3) << "send complete message to " << it.first;
+      this->AsyncSendComplete(it.first);
+    }
+    PADDLE_ENFORCE(this->Wait(), "internal grpc error");
+    completed_ = true;
   }
-  this->Wait();
 }
 
 GRPCClient::~GRPCClient() {
@@ -239,32 +235,19 @@ void GRPCClient::AsyncSendFetchBarrier(const std::string& ep,
   req_count_++;
 }
 
-void GRPCClient::AsyncSendBeginPass(const std::string& ep, int64_t time_out) {
+void GRPCClient::AsyncSendComplete(const std::string& ep, int64_t time_out) {
   const auto ch = GetChannel(ep);
 
   BatchBarrierProcessor* s = new BatchBarrierProcessor(ch);
   s->Prepare(time_out);
 
   sendrecv::VariableMessage req;
-  req.set_varname(BEGIN_PASS_MESSAGE);
+  req.set_varname(COMPLETE_MESSAGE);
   auto rpc = s->stub_->AsyncSendVariable(s->context_.get(), req, &cq_);
   rpc->Finish(&s->reply_, &s->status_, reinterpret_cast<void*>(s));
   req_count_++;
 }
 
-void GRPCClient::AsyncSendEndPass(const std::string& ep, int64_t time_out) {
-  const auto ch = GetChannel(ep);
-
-  FetchBarrierProcessor* s = new FetchBarrierProcessor(ch);
-  s->Prepare(time_out);
-
-  sendrecv::VariableMessage req;
-  req.set_varname(END_PASS_MESSAGE);
-  auto rpc = s->stub_->AsyncGetVariable(s->context_.get(), req, &cq_);
-  rpc->Finish(&s->reply_, &s->status_, reinterpret_cast<void*>(s));
-  req_count_++;
-}
-
 void GRPCClient::AsyncCheckpointNotify(const std::string& ep,
                                        const std::string& dir,
                                        int64_t time_out) {
diff --git a/paddle/fluid/operators/distributed/grpc_client.h b/paddle/fluid/operators/distributed/grpc_client.h
index 11de84d9e265b2ca75d6d72a1d1e8797763f96a5..8351d825f817437e1b3691e916952dd9a86af491 100644
--- a/paddle/fluid/operators/distributed/grpc_client.h
+++ b/paddle/fluid/operators/distributed/grpc_client.h
@@ -174,7 +174,7 @@ class CheckpointNotifyProcessor : public BaseProcessor {
 
 class GRPCClient : public RPCClient {
  public:
-  GRPCClient() : ok_(true) {}
+  GRPCClient() : ok_(true), completed_(false) {}
   virtual ~GRPCClient();
 
   bool AsyncSendVar(const std::string& ep, const platform::DeviceContext& ctx,
@@ -201,17 +201,12 @@ class GRPCClient : public RPCClient {
   void AsyncCheckpointNotify(const std::string& ep, const std::string& dir,
                              int64_t time_out = FLAGS_rpc_deadline) override;
 
-  void AsyncSendBeginPass(const std::string& ep,
-                          int64_t time_out = FLAGS_rpc_deadline) override;
-
-  void AsyncSendEndPass(const std::string& ep,
-                        int64_t time_out = FLAGS_rpc_deadline) override;
+  void AsyncSendComplete(const std::string& ep,
+                         int64_t time_out = FLAGS_rpc_deadline) override;
 
   bool Wait() override;
 
-  void SendBeginPass() override;
-
-  void SendEndPass() override;
+  void SendComplete() override;
 
  protected:
   void InitImpl() override;
@@ -238,6 +233,10 @@ class GRPCClient : public RPCClient {
   // mutex for GetChannel thread safety
   std::mutex chan_mutex_;
   DISABLE_COPY_AND_ASSIGN(GRPCClient);
+
+  // mutex for sending complete message only once
+  std::mutex completed_mutex_;
+  bool completed_;
 };
 
 }  // namespace distributed
diff --git a/paddle/fluid/operators/distributed/request_handler.h b/paddle/fluid/operators/distributed/request_handler.h
index 3d61171dff98d6752be98b4b90577bfd059525ab..64ac7281848f91302bc0aa3cb81dd198e56fb653 100644
--- a/paddle/fluid/operators/distributed/request_handler.h
+++ b/paddle/fluid/operators/distributed/request_handler.h
@@ -43,8 +43,6 @@ constexpr char kRequestPassBarrier[] = "RequestPassBarrier";
 #define BATCH_BARRIER_MESSAGE "BATCH_BARRIER@RECV"
 #define FETCH_BARRIER_MESSAGE "FETCH_BARRIER@RECV"
 #define COMPLETE_MESSAGE "COMPLETE@RECV"
-#define BEGIN_PASS_MESSAGE "BEGIN_PASS@RECV"
-#define END_PASS_MESSAGE "END_PASS@RECV"
 
 #define CHECKPOINT_SAVE_MESSAGE "SAVE@CHECKPOINTNOTIFY"
 #define CHECKPOINT_LOAD_MESSAGE "LOAD@CHECKPOINTNOTIFY"
diff --git a/paddle/fluid/operators/distributed/request_handler_impl.cc b/paddle/fluid/operators/distributed/request_handler_impl.cc
index f1f84072d47e58eaa81dd66dc018e17b182bb57b..55995783c6eab10632ab2a5bca64ca856f000df1 100644
--- a/paddle/fluid/operators/distributed/request_handler_impl.cc
+++ b/paddle/fluid/operators/distributed/request_handler_impl.cc
@@ -55,10 +55,9 @@ bool RequestSendHandler::Handle(const std::string& varname,
   if (varname == BATCH_BARRIER_MESSAGE) {
     VLOG(3) << "sync: recv BATCH_BARRIER_MESSAGE";
     rpc_server_->IncreaseBatchBarrier(kRequestSend);
-  } else if (varname == BEGIN_PASS_MESSAGE) {
-    VLOG(3) << "sync: recv begin pass message";
-    rpc_server_->WaitCond(kRequestSend);
-    rpc_server_->BeginPass();
+  } else if (varname == COMPLETE_MESSAGE) {
+    VLOG(3) << "sync: recv complete message";
+    rpc_server_->Complete();
   } else {
     VLOG(3) << "sync: received var_name: " << varname;
     rpc_server_->WaitCond(kRequestSend);
@@ -94,14 +93,12 @@ bool RequestGetHandler::Handle(const std::string& varname,
     if (varname == FETCH_BARRIER_MESSAGE) {
       VLOG(3) << "sync: recv fetch barrier message";
       rpc_server_->IncreaseBatchBarrier(kRequestGet);
-    } else if (varname == END_PASS_MESSAGE) {
-      rpc_server_->EndPass();
     } else {
       rpc_server_->WaitCond(kRequestGet);
       *outvar = scope_->FindVar(varname);
     }
   } else {
-    if (varname != FETCH_BARRIER_MESSAGE && varname != END_PASS_MESSAGE) {
+    if (varname != FETCH_BARRIER_MESSAGE && varname != COMPLETE_MESSAGE) {
       *outvar = scope_->FindVar(varname);
     }
   }
diff --git a/paddle/fluid/operators/distributed/rpc_client.h b/paddle/fluid/operators/distributed/rpc_client.h
index 4d87376fbf776e29156b78d826f5012bc53460df..22a022a5d25e5c6628b80294494b87ca105a04c7 100644
--- a/paddle/fluid/operators/distributed/rpc_client.h
+++ b/paddle/fluid/operators/distributed/rpc_client.h
@@ -60,17 +60,13 @@ class RPCClient {
                                      const std::string& dir,
                                      int64_t time_out = FLAGS_rpc_deadline) = 0;
 
-  virtual void AsyncSendBeginPass(const std::string& ep,
-                                  int64_t time_out = FLAGS_rpc_deadline) = 0;
+  virtual void AsyncSendComplete(const std::string& ep,
+                                 int64_t time_out = FLAGS_rpc_deadline) = 0;
 
-  virtual void AsyncSendEndPass(const std::string& ep,
-                                int64_t time_out = FLAGS_rpc_deadline) = 0;
-
-  // BeginePass/EndPass tells all the pserver that start/end a pass, so that
-  // the pserver can increase/reduce it's barrier count, and continue to train
+  // Complete tells all the pserver instances that finishe the training,
+  // the pserver can reduce it's barrier count, and continue to train
   // with other trainers.
-  virtual void SendBeginPass() = 0;
-  virtual void SendEndPass() = 0;
+  virtual void SendComplete() = 0;
 
   virtual bool Wait() = 0;
 
diff --git a/paddle/fluid/operators/distributed/rpc_server.cc b/paddle/fluid/operators/distributed/rpc_server.cc
index d49ee34eeaf4e80f6fd4f8cdc548cc2b938d0f2a..83b14fa64d735d80f43bf55c798cddb2f3ea7032 100644
--- a/paddle/fluid/operators/distributed/rpc_server.cc
+++ b/paddle/fluid/operators/distributed/rpc_server.cc
@@ -64,18 +64,7 @@ void RPCServer::IncreaseBatchBarrier(const std::string rpc_name) {
   }
 }
 
-void RPCServer::BeginPass() {
-  VLOG(4) << "RPCServer begin increase pass barrier";
-  {
-    std::unique_lock<std::mutex> lock(mutex_);
-    client_num_++;
-    VLOG(4) << "increase client_num to: " << client_num_;
-  }
-  barrier_cond_.notify_all();
-}
-
-void RPCServer::EndPass() {
-  VLOG(4) << "RPCServer begin increase pass barrier";
+void RPCServer::Complete() {
   {
     std::unique_lock<std::mutex> lock(mutex_);
     client_num_--;
@@ -87,6 +76,11 @@ void RPCServer::EndPass() {
   barrier_cond_.notify_all();
 }
 
+int RPCServer::GetClientNum() {
+  std::unique_lock<std::mutex> lock(mutex_);
+  return client_num_;
+}
+
 void RPCServer::ResetBarrierCounter() {
   VLOG(3) << "RPCServer ResetBarrierCounter ";
   std::unique_lock<std::mutex> lock(mutex_);
diff --git a/paddle/fluid/operators/distributed/rpc_server.h b/paddle/fluid/operators/distributed/rpc_server.h
index 833991c8aa6e7cfd10f2aa52f9218be7ff8ccebf..fd914d7a72e61bc9472876c433b65598ef5b1980 100644
--- a/paddle/fluid/operators/distributed/rpc_server.h
+++ b/paddle/fluid/operators/distributed/rpc_server.h
@@ -44,7 +44,7 @@ class RPCServer {
 
   int GetSelectedPort() const { return selected_port_; }
 
-  int GetClientNum() const;
+  int GetClientNum();
 
   void SavePort() const;
 
@@ -64,8 +64,7 @@ class RPCServer {
   void WaitCond(const std::string& rpc_name);
   void IncreaseBatchBarrier(const std::string rpc_name);
 
-  void BeginPass();
-  void EndPass();
+  void Complete();
 
   void ResetBarrierCounter();
 
diff --git a/paddle/fluid/operators/distributed/rpc_server_test.cc b/paddle/fluid/operators/distributed/rpc_server_test.cc
index a0693cffabcc561b0adfafc2c49027a890dd5efc..9f2360ec70d2ce5d4e16435595e109c1bf04fd13 100644
--- a/paddle/fluid/operators/distributed/rpc_server_test.cc
+++ b/paddle/fluid/operators/distributed/rpc_server_test.cc
@@ -91,7 +91,7 @@ void InitTensorsOnServer(framework::Scope* scope, platform::CPUPlace* place,
   }
 }
 
-void StartServer() {
+void StartServer(const std::string& rpc_name) {
   framework::ProgramDesc program;
   framework::Scope scope;
   platform::CPUPlace place;
@@ -107,14 +107,14 @@ void StartServer() {
                      std::shared_ptr<framework::ExecutorPrepareContext>>
       prefetch_var_name_to_prepared;
   prefetch_var_name_to_prepared[in_var_name] = prepared[0];
+
   g_req_handler->SetProgram(&program);
   g_req_handler->SetPrefetchPreparedCtx(&prefetch_var_name_to_prepared);
   g_req_handler->SetDevCtx(&ctx);
   g_req_handler->SetScope(&scope);
   g_req_handler->SetExecutor(&exe);
 
-  g_rpc_service->RegisterRPC(distributed::kRequestPrefetch,
-                             g_req_handler.get());
+  g_rpc_service->RegisterRPC(rpc_name, g_req_handler.get());
   g_req_handler->SetRPCServer(g_rpc_service.get());
 
   std::thread server_thread(
@@ -129,7 +129,7 @@ TEST(PREFETCH, CPU) {
   distributed::RPCClient* client =
       distributed::RPCClient::GetInstance<RPCCLIENT_T>();
 
-  std::thread server_thread(StartServer);
+  std::thread server_thread(StartServer, distributed::kRequestPrefetch);
   g_rpc_service->WaitServerReady();
 
   int port = g_rpc_service->GetSelectedPort();
@@ -162,3 +162,24 @@ TEST(PREFETCH, CPU) {
   g_rpc_service.reset(nullptr);
   g_req_handler.reset(nullptr);
 }
+
+TEST(COMPLETE, CPU) {
+  g_req_handler.reset(new distributed::RequestSendHandler(true));
+  g_rpc_service.reset(new RPCSERVER_T("127.0.0.1:0", 2));
+  distributed::RPCClient* client =
+      distributed::RPCClient::GetInstance<RPCCLIENT_T>();
+  PADDLE_ENFORCE(client != nullptr);
+  std::thread server_thread(StartServer, distributed::kRequestSend);
+  g_rpc_service->WaitServerReady();
+  int port = g_rpc_service->GetSelectedPort();
+  std::string ep = paddle::string::Sprintf("127.0.0.1:%d", port);
+  client->AsyncSendComplete(ep);
+  client->Wait();
+
+  EXPECT_EQ(g_rpc_service->GetClientNum(), 1);
+
+  g_rpc_service->ShutDown();
+  server_thread.join();
+  g_rpc_service.reset(nullptr);
+  g_req_handler.reset(nullptr);
+}
diff --git a/paddle/fluid/operators/reader/lod_tensor_blocking_queue.h b/paddle/fluid/operators/reader/lod_tensor_blocking_queue.h
index 311a429f9c307f3913a1ffe5dfb7d84119c9711e..4f7cfc24ec035349f3c85e84d876ad9b5b5493a6 100644
--- a/paddle/fluid/operators/reader/lod_tensor_blocking_queue.h
+++ b/paddle/fluid/operators/reader/lod_tensor_blocking_queue.h
@@ -38,12 +38,10 @@ class LoDTensorBlockingQueue {
 
  public:
   bool Push(const std::vector<framework::LoDTensor>& lod_tensor_vec) {
-    CheckDims(lod_tensor_vec);
     return queue_.Send(lod_tensor_vec);
   }
 
   bool Push(std::vector<framework::LoDTensor>&& lod_tensor_vec) {
-    CheckDims(lod_tensor_vec);
     return queue_.Send(std::move(lod_tensor_vec));
   }
 
@@ -65,21 +63,6 @@ class LoDTensorBlockingQueue {
   inline bool IsClosed() const { return queue_.IsClosed(); }
 
  private:
-  void CheckDims(
-      const std::vector<framework::LoDTensor>& lod_tensor_vec) const {
-    PADDLE_ENFORCE(dims_.size() == lod_tensor_vec.size(),
-                   "Expect input size is %d but found %s", dims_.size(),
-                   lod_tensor_vec.size());
-    for (size_t i = 0; i < dims_.size(); ++i) {
-      const auto& in_dims = framework::slice_ddim(
-          lod_tensor_vec[i].dims(), 1, lod_tensor_vec[i].dims().size());
-      const auto& expect_dims =
-          framework::slice_ddim(dims_[i], 1, dims_[i].size());
-      PADDLE_ENFORCE(in_dims == expect_dims,
-                     "Dims of the %d-th input tensor do not match", i);
-    }
-  }
-
   BlockingQueue<std::vector<framework::LoDTensor>> queue_;
   std::vector<framework::DDim> dims_;
 };
diff --git a/paddle/fluid/operators/reshape_op.cc b/paddle/fluid/operators/reshape_op.cc
index 918f3be533d51367eade5f5108ad2eab954a9303..a9fd1869c9df5464db6fc87ac633cdba2d6dbe7f 100644
--- a/paddle/fluid/operators/reshape_op.cc
+++ b/paddle/fluid/operators/reshape_op.cc
@@ -216,7 +216,7 @@ class ReshapeKernel {
     if (shape_tensor) {
       auto *shape_data = shape_tensor->data<int>();
       framework::Tensor cpu_shape_tensor;
-      if (platform::is_gpu_place(ctx.GetPlace())) {
+      if (platform::is_gpu_place(shape_tensor->place())) {
         TensorCopySync(*shape_tensor, platform::CPUPlace(), &cpu_shape_tensor);
         shape_data = cpu_shape_tensor.data<int>();
       }
diff --git a/paddle/fluid/operators/tensorrt_engine_op.cc b/paddle/fluid/operators/tensorrt_engine_op.cc
index 43672d6db92a981f0fbe6e8f7079dafc6ae4052e..db641a4bc2c637e0babee6b6bc6e67b068759ff5 100644
--- a/paddle/fluid/operators/tensorrt_engine_op.cc
+++ b/paddle/fluid/operators/tensorrt_engine_op.cc
@@ -55,13 +55,14 @@ nvinfer1::Dims Vec2TRT_Dims(const std::vector<int64_t> &shape) {
                     "TensorRT' tensor input requires at least 2 dimensions");
   PADDLE_ENFORCE_LE(shape.size(), 4UL,
                     "TensorRT' tensor input requires at most 4 dimensions");
+
   switch (shape.size()) {
     case 2:
-      return nvinfer1::Dims2(shape[0], shape[1]);
+      return nvinfer1::Dims2(1, shape[1]);
     case 3:
-      return nvinfer1::Dims3(shape[0], shape[1], shape[2]);
+      return nvinfer1::Dims3(1, shape[1], shape[2]);
     case 4:
-      return nvinfer1::Dims4(shape[0], shape[1], shape[2], shape[3]);
+      return nvinfer1::Dims4(1, shape[1], shape[2], shape[3]);
     default:
       return nvinfer1::Dims();
   }
diff --git a/paddle/fluid/operators/tensorrt_engine_op.h b/paddle/fluid/operators/tensorrt_engine_op.h
index a332d70030ffa6a033f6b2b33487a4fd279b7016..32d10fd8a5687ebaae1d7d75af531cbc45ef4245 100644
--- a/paddle/fluid/operators/tensorrt_engine_op.h
+++ b/paddle/fluid/operators/tensorrt_engine_op.h
@@ -93,13 +93,15 @@ class TensorRTEngineKernel : public framework::OpKernel<T> {
       auto* fluid_v = context.scope().FindVar(y);
       PADDLE_ENFORCE_NOT_NULL(fluid_v, "no output variable called %s", y);
       auto* fluid_t = fluid_v->GetMutable<framework::LoDTensor>();
-      auto size = inference::analysis::AccuDims(dims.d, dims.nbDims);
+
       fluid_t->Resize(framework::make_ddim(ddim));
 
       // TODO(Superjomn) find some way to determine which device to output the
       // tensor.
       // if (platform::is_cpu_place(fluid_t->place())) {
       // TODO(Superjomn) change this float to dtype size.
+      auto size = inference::analysis::AccuDims(dims.d, dims.nbDims) *
+                  FLAGS_tensorrt_engine_batch_size;
       engine->GetOutputInCPU(y,
                              fluid_t->mutable_data<float>(platform::CPUPlace()),
                              size * sizeof(float));
diff --git a/paddle/fluid/operators/tensorrt_engine_op_test.cc b/paddle/fluid/operators/tensorrt_engine_op_test.cc
index 82a16361e40513aeaf6f510e450f58989369fcdb..7cb1e47a1516c32fb31a7818e7203b498e31e431 100644
--- a/paddle/fluid/operators/tensorrt_engine_op_test.cc
+++ b/paddle/fluid/operators/tensorrt_engine_op_test.cc
@@ -64,36 +64,37 @@ TEST(TensorRTEngineOp, manual) {
 
   LOG(INFO) << "create block desc";
   framework::BlockDesc block_desc(&program, block_);
-  LOG(INFO) << "create mul op";
-  auto* mul = block_desc.AppendOp();
-  mul->SetType("mul");
-  mul->SetInput("X", std::vector<std::string>({"x"}));     // 2 x 4
-  mul->SetInput("Y", std::vector<std::string>({"y"}));     // 4 x 6
-  mul->SetOutput("Out", std::vector<std::string>({"z"}));  // 2 x 6
+  LOG(INFO) << "create fc op";
+  auto* fc0 = block_desc.AppendOp();
+  fc0->SetType("fc");
+  fc0->SetInput("X", std::vector<std::string>({"x"}));     // 4 x 1 x 1
+  fc0->SetInput("Y", std::vector<std::string>({"y"}));     // 4 x 6
+  fc0->SetOutput("Out", std::vector<std::string>({"z"}));  // 6 x 1 x 1
 
   LOG(INFO) << "create fc op";
-  auto* fc = block_desc.AppendOp();
-  fc->SetType("mul");
-  fc->SetInput("X", std::vector<std::string>({"z"}));
-  fc->SetInput("Y", std::vector<std::string>({"y0"}));     // 6 x 8
-  fc->SetOutput("Out", std::vector<std::string>({"z0"}));  // 2 x 8
+  auto* fc1 = block_desc.AppendOp();
+  fc1->SetType("fc");
+  fc1->SetInput("X", std::vector<std::string>({"z"}));
+  fc1->SetInput("Y", std::vector<std::string>({"y0"}));     // 6 x 8
+  fc1->SetOutput("Out", std::vector<std::string>({"z0"}));  // 8 x 1 x 1
 
   // Set inputs' variable shape in BlockDesc
-  AddTensorToBlockDesc(block_, "x", std::vector<int64_t>({2, 4}));
+  // the batch size is 2, so the dims of 'x' is {2, 4, 1, 1}
+  AddTensorToBlockDesc(block_, "x", std::vector<int64_t>({2, 4, 1, 1}));
   AddTensorToBlockDesc(block_, "y", std::vector<int64_t>({4, 6}));
   AddTensorToBlockDesc(block_, "y0", std::vector<int64_t>({6, 8}));
   AddTensorToBlockDesc(block_, "z", std::vector<int64_t>({2, 6}));
 
   // It is wired, need to copy manually.
-  *block_->add_ops() = *mul->Proto();
-  *block_->add_ops() = *fc->Proto();
+  *block_->add_ops() = *fc0->Proto();
+  *block_->add_ops() = *fc1->Proto();
 
   ASSERT_EQ(block_->ops_size(), 2);
 
   LOG(INFO) << "create tensorrt desc";
   framework::OpDesc engine_op_desc(nullptr);
   engine_op_desc.SetType("tensorrt_engine");
-  engine_op_desc.SetInput("Xs", std::vector<std::string>({"x", "y", "y0"}));
+  engine_op_desc.SetInput("Xs", std::vector<std::string>({"x"}));
   engine_op_desc.SetOutput("Ys", std::vector<std::string>({"z0"}));
   SetAttr<std::string>(engine_op_desc.Proto(), "subgraph",
                        block_->SerializeAsString());
@@ -207,5 +208,4 @@ TEST(TensorRTEngineOp, fc) { Execute(40, 28, 28); }
 }  // namespace operators
 }  // namespace paddle
 
-USE_TRT_CONVERTER(mul)
 USE_TRT_CONVERTER(fc)
diff --git a/paddle/fluid/pybind/pybind.cc b/paddle/fluid/pybind/pybind.cc
index 3e13e7b1ffebf92301df69084b058ca55783e578..ee1c8d46ddfb4f0c09591bb78dc720555dc735b4 100644
--- a/paddle/fluid/pybind/pybind.cc
+++ b/paddle/fluid/pybind/pybind.cc
@@ -498,10 +498,7 @@ All parameter, weight, gradient are variables in Paddle.
 
   py::class_<framework::Executor>(m, "Executor")
       .def(py::init<const platform::Place &>())
-#ifdef PADDLE_WITH_DISTRIBUTE
-      .def("begin_pass", &Executor::BeginPass)
-      .def("end_pass", &Executor::EndPass)
-#endif
+      .def("close", &Executor::Close)
       .def("run", [](Executor &self, const ProgramDesc &prog, Scope *scope,
                      int block_id, bool create_local_scope, bool create_vars) {
         pybind11::gil_scoped_release release;
diff --git a/python/paddle/fluid/executor.py b/python/paddle/fluid/executor.py
index f9e600cb4cb252baead87025db0e0db71e8169d2..4178971398c953236bf8de4d5cb6e93d0e33380c 100644
--- a/python/paddle/fluid/executor.py
+++ b/python/paddle/fluid/executor.py
@@ -247,6 +247,7 @@ class Executor(object):
         p.set_place(place)
         self.executor = core.Executor(p)
         self.program_caches = dict()
+        self._closed = False
 
     def as_lodtensor(self, data):
         """
@@ -348,11 +349,23 @@ class Executor(object):
         ]
         return outs
 
-    def begin_pass(self):
-        self.executor.begin_pass()
+    def close(self):
+        """
+        Close this executor.
 
-    def end_pass(self):
-        self.executor.end_pass()
+        You can no long use this executor after calling this method.
+        For the distributed training, this method would free the resource on PServers related to
+        the current Trainer.
+
+        Example:
+            >>> cpu = core.CPUPlace()
+            >>> exe = Executor(cpu)
+            >>> ...
+            >>> exe.close()
+        """
+        if not self._closed:
+            self.executor.close()
+            self._closed = True
 
     def run(self,
             program=None,
@@ -405,6 +418,10 @@ class Executor(object):
             >>>     feed={'X': x},
             >>>     fetch_list=[loss.name])
         """
+
+        if self._closed:
+            raise RuntimeError("Attempted to use a closed Executor")
+
         if feed is None:
             feed = {}
         if not isinstance(feed, dict):
diff --git a/python/paddle/fluid/framework.py b/python/paddle/fluid/framework.py
index 1a61fce37fa76fe0d62ce01caa45511bd0a5c0bf..9fc3849ee071dba0c4d39e2d661f5afd064d1210 100644
--- a/python/paddle/fluid/framework.py
+++ b/python/paddle/fluid/framework.py
@@ -32,7 +32,6 @@ except Exception, e:
 import unique_name
 
 __all__ = [
-    'Variable',
     'Program',
     'Operator',
     'Parameter',
@@ -302,7 +301,7 @@ class Variable(object):
 
     __repr__ = __str__
 
-    def set_desc(self, input):
+    def _set_desc(self, input):
         """
         Set the variable description.
 
@@ -347,7 +346,7 @@ class Variable(object):
     def type(self):
         return self.desc.type()
 
-    def set_error_clip(self, error_clip):
+    def _set_error_clip(self, error_clip):
         """
         Set the error_clip.
 
diff --git a/python/paddle/fluid/io.py b/python/paddle/fluid/io.py
index e5eb34eb0f5cfceeaa7ac09d5bd3d9dc60b7692f..2d03e189b968cf55a7006b8ebcff4d9c3e30a232 100644
--- a/python/paddle/fluid/io.py
+++ b/python/paddle/fluid/io.py
@@ -797,104 +797,6 @@ def get_parameter_value_by_name(name, executor, program=None):
     return get_parameter_value(var, executor)
 
 
-def get_test_program(filelist, program=None, startup_program=None):
-    """
-    Transpile current train program to a program to read test dataset
-    if the program is using reader ops like "open_files_op".
-    """
-
-    def _copy_reader_var_(block, var, new_name=None):
-        if new_name == None:
-            new_name = var.name
-        new_var = block.create_var(
-            name=str(new_name), type=core.VarDesc.VarType.READER)
-        new_var.desc.set_shapes(var.desc.shapes())
-        new_var.desc.set_dtypes(var.desc.dtypes())
-        new_var.persistable = True
-        return new_var
-
-    def _get_test_reader_name(train_reader_name):
-        return train_reader_name + "_test"
-
-    def _is_reader_op(op):
-        block = op.block
-        if "Out" in op.output_names:
-            reader_out = block.vars[op.output("Out")[0]]
-            if reader_out.type == core.VarDesc.VarType.READER:
-                return True
-        return False
-
-    if program == None:
-        program = default_main_program()
-    if startup_program == None:
-        startup_program = default_startup_program()
-    startup_block = startup_program.global_block()
-
-    # 1. find out the orignal reader var name
-    startup_reader_op_list = []
-
-    for op in startup_block.ops:
-        if _is_reader_op(op):
-            startup_reader_op_list.append(op)
-
-    if len(startup_reader_op_list) == 0:
-        return program
-
-    root_reader_op = startup_reader_op_list[0]
-    train_test_reader_map = {}
-    # 2. add operators to startup to read open and read test data files
-    for op in startup_reader_op_list:
-        assert (len(op.output("Out")) == 1)
-        train_reader_name = op.output("Out")[0]
-        train_reader = startup_block.vars[train_reader_name]
-        test_reader = _copy_reader_var_(
-            startup_block,
-            train_reader,
-            new_name=_get_test_reader_name(train_reader_name))
-        train_test_reader_map[train_reader.name] = test_reader
-
-        test_op_inputs = {}
-        for name in op.input_names:
-            train_arg_names = op.input(name)
-            test_arg_vars = []
-            for arg_name in train_arg_names:
-                arg_var = train_test_reader_map[
-                    arg_name] if name == "UnderlyingReader" else startup_block.vars[
-                        arg_name]
-                test_arg_vars.append(arg_var)
-            test_op_inputs[name] = test_arg_vars
-
-        test_op = startup_block.append_op(
-            type=op.type,
-            inputs=test_op_inputs,
-            outputs={'Out': [test_reader]},
-            attrs=op.attrs)
-        # root reader op's filelist attr for read test files
-        if op.type == root_reader_op.type:
-            test_op.set_attr("file_names", filelist)
-        if op.type == "create_multi_pass_reader":
-            test_op.set_attr("pass_num", 1)
-
-    # 3. rename reader vars in inference program to different name
-    #    to avoid read from train data.
-    main_block = program.global_block()
-    for var in main_block.vars.values():
-        if var.type == core.VarDesc.VarType.READER:
-            main_block._rename_var(
-                str(var.name), str(_get_test_reader_name(var.name)))
-
-    for op in main_block.ops:
-        if op.type == root_reader_op.type:
-            test_op.set_attr("file_names", filelist)
-        if op.type == "create_multi_pass_reader":
-            test_op.set_attr("pass_num", 1)
-
-    startup_program._sync_with_cpp()
-    program._sync_with_cpp()
-
-    return program
-
-
 def _load_slice_up_vars(executor, dirname, slice_vars_and_atts):
     if slice_vars_and_atts == None or len(slice_vars_and_atts) == 0:
         return
diff --git a/python/paddle/fluid/layers/control_flow.py b/python/paddle/fluid/layers/control_flow.py
index 79a11a30d602cb33c2583873e0d0f2e15e0fcb8c..f05ae6d5d1900560e37370121bf64f1fcab14357 100644
--- a/python/paddle/fluid/layers/control_flow.py
+++ b/python/paddle/fluid/layers/control_flow.py
@@ -23,25 +23,17 @@ from ops import logical_and, logical_not, logical_or
 import numpy
 
 __all__ = [
-    'split_lod_tensor',
-    'merge_lod_tensor',
     'While',
     'Switch',
-    'lod_rank_table',
-    'max_sequence_len',
-    'lod_tensor_to_array',
-    'array_to_lod_tensor',
     'increment',
     'array_write',
     'create_array',
     'less_than',
     'equal',
     'array_read',
-    'shrink_memory',
     'array_length',
     'IfElse',
     'DynamicRNN',
-    'ConditionalBlock',
     'StaticRNN',
     'reorder_lod_tensor_by_rank',
     'ParallelDo',
@@ -1457,7 +1449,7 @@ class IfElse(object):
         if self.status == IfElse.OUT_IF_ELSE_BLOCKS:
             raise ValueError("input must in true/false blocks")
         if id(x) not in self.input_table:
-            parent_block = self.parent_block()
+            parent_block = self._parent_block()
             out_true = parent_block.create_var(
                 name=unique_name.generate('ifelse_input' + self.helper.name),
                 dtype=x.dtype)
@@ -1483,7 +1475,7 @@ class IfElse(object):
         else:
             return out_false
 
-    def parent_block(self):
+    def _parent_block(self):
         current_block = self.helper.main_program.current_block()
         return self.helper.main_program.block(current_block.parent_idx)
 
@@ -1499,7 +1491,7 @@ class IfElse(object):
 
         out_table = self.output_table[1 if self.status ==
                                       self.IN_IF_ELSE_TRUE_BLOCKS else 0]
-        parent_block = self.parent_block()
+        parent_block = self._parent_block()
         for each_out in outs:
             if not isinstance(each_out, Variable):
                 raise TypeError("Each output should be a variable")
diff --git a/python/paddle/fluid/layers/learning_rate_scheduler.py b/python/paddle/fluid/layers/learning_rate_scheduler.py
index 6071e3e74218e4db4cddc223818d3a9b7086fd86..c7966e36f15ef0e3f30f8a96ad71df04aece0fa1 100644
--- a/python/paddle/fluid/layers/learning_rate_scheduler.py
+++ b/python/paddle/fluid/layers/learning_rate_scheduler.py
@@ -62,10 +62,10 @@ def noam_decay(d_model, warmup_steps):
         The decayed learning rate.
     """
     global_step = _decay_step_counter(1)
-    with init_on_cpu():
-        a = global_step**-0.5
-        b = (warmup_steps**-1.5) * global_step
-        lr_value = (d_model**-0.5) * ops.elementwise_min(a, b)
+
+    a = global_step**-0.5
+    b = (warmup_steps**-1.5) * global_step
+    lr_value = (d_model**-0.5) * ops.elementwise_min(a, b)
 
     return lr_value
 
@@ -108,12 +108,10 @@ def exponential_decay(learning_rate, decay_steps, decay_rate, staircase=False):
     """
     global_step = _decay_step_counter()
 
-    with init_on_cpu():
-        # update learning_rate
-        div_res = global_step / decay_steps
-        if staircase:
-            div_res = ops.floor(div_res)
-        decayed_lr = learning_rate * (decay_rate**div_res)
+    div_res = global_step / decay_steps
+    if staircase:
+        div_res = ops.floor(div_res)
+    decayed_lr = learning_rate * (decay_rate**div_res)
 
     return decayed_lr
 
@@ -138,11 +136,10 @@ def natural_exp_decay(learning_rate, decay_steps, decay_rate, staircase=False):
     """
     global_step = _decay_step_counter()
 
-    with init_on_cpu():
-        div_res = global_step / decay_steps
-        if staircase:
-            div_res = ops.floor(div_res)
-        decayed_lr = learning_rate * ops.exp(-1 * decay_rate * div_res)
+    div_res = global_step / decay_steps
+    if staircase:
+        div_res = ops.floor(div_res)
+    decayed_lr = learning_rate * ops.exp(-1 * decay_rate * div_res)
 
     return decayed_lr
 
@@ -184,12 +181,11 @@ def inverse_time_decay(learning_rate, decay_steps, decay_rate, staircase=False):
     """
     global_step = _decay_step_counter()
 
-    with init_on_cpu():
-        div_res = global_step / decay_steps
-        if staircase:
-            div_res = ops.floor(div_res)
+    div_res = global_step / decay_steps
+    if staircase:
+        div_res = ops.floor(div_res)
 
-        decayed_lr = learning_rate / (1 + decay_rate * div_res)
+    decayed_lr = learning_rate / (1 + decay_rate * div_res)
 
     return decayed_lr
 
@@ -224,25 +220,22 @@ def polynomial_decay(learning_rate,
     """
     global_step = _decay_step_counter()
 
-    with init_on_cpu():
-        if cycle:
-            div_res = ops.ceil(global_step / decay_steps)
-            zero_var = tensor.fill_constant(
-                shape=[1], dtype='float32', value=0.0)
-            one_var = tensor.fill_constant(
-                shape=[1], dtype='float32', value=1.0)
-
-            with control_flow.Switch() as switch:
-                with switch.case(global_step == zero_var):
-                    tensor.assign(input=one_var, output=div_res)
-            decay_steps = decay_steps * div_res
-        else:
-            decay_steps_var = tensor.fill_constant(
-                shape=[1], dtype='float32', value=float(decay_steps))
-            global_step = ops.elementwise_min(x=global_step, y=decay_steps_var)
+    if cycle:
+        div_res = ops.ceil(global_step / decay_steps)
+        zero_var = tensor.fill_constant(shape=[1], dtype='float32', value=0.0)
+        one_var = tensor.fill_constant(shape=[1], dtype='float32', value=1.0)
 
-        decayed_lr = (learning_rate - end_learning_rate) * \
-                     ((1 - global_step / decay_steps) ** power) + end_learning_rate
+        with control_flow.Switch() as switch:
+            with switch.case(global_step == zero_var):
+                tensor.assign(input=one_var, output=div_res)
+        decay_steps = decay_steps * div_res
+    else:
+        decay_steps_var = tensor.fill_constant(
+            shape=[1], dtype='float32', value=float(decay_steps))
+        global_step = ops.elementwise_min(x=global_step, y=decay_steps_var)
+
+    decayed_lr = (learning_rate - end_learning_rate) * \
+        ((1 - global_step / decay_steps) ** power) + end_learning_rate
     return decayed_lr
 
 
@@ -277,28 +270,28 @@ def piecewise_decay(boundaries, values):
 
     global_step = _decay_step_counter()
 
-    with init_on_cpu():
-        lr = tensor.create_global_var(
-            shape=[1],
-            value=0.0,
-            dtype='float32',
-            persistable=True,
-            name="learning_rate")
+    lr = tensor.create_global_var(
+        shape=[1],
+        value=0.0,
+        dtype='float32',
+        persistable=True,
+        name="learning_rate")
 
-        with control_flow.Switch() as switch:
-            for i in range(len(boundaries)):
-                boundary_val = tensor.fill_constant(
-                    shape=[1], dtype='float32', value=float(boundaries[i]))
-                value_var = tensor.fill_constant(
-                    shape=[1], dtype='float32', value=float(values[i]))
-                with switch.case(global_step < boundary_val):
-                    tensor.assign(value_var, lr)
-            last_value_var = tensor.fill_constant(
+    with control_flow.Switch() as switch:
+        for i in range(len(boundaries)):
+            boundary_val = tensor.fill_constant(
                 shape=[1],
                 dtype='float32',
-                value=float(values[len(values) - 1]))
-            with switch.default():
-                tensor.assign(last_value_var, lr)
+                value=float(boundaries[i]),
+                force_cpu=True)
+            value_var = tensor.fill_constant(
+                shape=[1], dtype='float32', value=float(values[i]))
+            with switch.case(global_step < boundary_val):
+                tensor.assign(value_var, lr)
+        last_value_var = tensor.fill_constant(
+            shape=[1], dtype='float32', value=float(values[len(values) - 1]))
+        with switch.default():
+            tensor.assign(last_value_var, lr)
 
     return lr
 
@@ -333,9 +326,9 @@ def append_LARS(params_grads, learning_rate, weight_decay):
         grad_norm = ops.sqrt(nn.reduce_sum(input=ops.square(grad)))
         if type(param_lr) == float and param_lr == 1.0:
             decayed_lr = learning_rate * param_norm \
-                         / _balanced_weight(param_norm, grad_norm)
+                / _balanced_weight(param_norm, grad_norm)
         else:
             decayed_lr = learning_rate * param_lr * param_norm \
-                         / _balanced_weight(param_norm, grad_norm)
+                / _balanced_weight(param_norm, grad_norm)
         # set back param local learning rate
         param.optimize_attr['learning_rate'] = decayed_lr
diff --git a/python/paddle/fluid/tests/demo/text_classification/.gitignore b/python/paddle/fluid/tests/demo/file_reader/.gitignore
similarity index 100%
rename from python/paddle/fluid/tests/demo/text_classification/.gitignore
rename to python/paddle/fluid/tests/demo/file_reader/.gitignore
diff --git a/python/paddle/fluid/tests/demo/text_classification/convert_data_to_recordio.py b/python/paddle/fluid/tests/demo/file_reader/convert_data_to_recordio.py
similarity index 94%
rename from python/paddle/fluid/tests/demo/text_classification/convert_data_to_recordio.py
rename to python/paddle/fluid/tests/demo/file_reader/convert_data_to_recordio.py
index 8244617711138d590193b2898de5d2f3aeb1e11e..b839e14889884bca8d27586aa8c1d76fba3458c1 100644
--- a/python/paddle/fluid/tests/demo/text_classification/convert_data_to_recordio.py
+++ b/python/paddle/fluid/tests/demo/file_reader/convert_data_to_recordio.py
@@ -35,7 +35,7 @@ if len(sys.argv) == 1:
     word_dict = paddle.dataset.imdb.word_dict()
 else:
     word_dict = load_vocab(sys.argv[1])
-word_dict["<unk>"] = len(word_dict)
+    word_dict["<unk>"] = len(word_dict)
 print "Dict dim = ", len(word_dict)
 
 # input text data
@@ -50,7 +50,7 @@ feeder = fluid.DataFeeder(feed_list=[data, label], place=fluid.CPUPlace())
 BATCH_SIZE = 128
 train_reader = paddle.batch(
     paddle.reader.shuffle(
-        paddle.dataset.imdb.train(word_dict), buf_size=10000),
+        paddle.dataset.imdb.train(word_dict), buf_size=25000),
     batch_size=BATCH_SIZE)
 
 test_reader = paddle.batch(
diff --git a/python/paddle/fluid/tests/demo/file_reader/train.py b/python/paddle/fluid/tests/demo/file_reader/train.py
new file mode 100644
index 0000000000000000000000000000000000000000..bc3a6dc81d24afec66ed1489aead1cff79a59bca
--- /dev/null
+++ b/python/paddle/fluid/tests/demo/file_reader/train.py
@@ -0,0 +1,138 @@
+#   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.
+# 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.
+
+import paddle.fluid as fluid
+import numpy
+import sys
+
+TRAIN_FILES = ['train.recordio']
+TEST_FILES = ['test.recordio']
+
+DICT_DIM = 5147
+
+# embedding dim
+emb_dim = 128
+
+# hidden dim
+hid_dim = 128
+
+# class num
+class_dim = 2
+
+# epoch num
+epoch_num = 10
+
+
+def build_program(is_train):
+    file_obj_handle = fluid.layers.io.open_files(
+        filenames=TRAIN_FILES if is_train else TEST_FILES,
+        shapes=[[-1, 1], [-1, 1]],
+        lod_levels=[1, 0],
+        dtypes=['int64', 'int64'])
+
+    file_obj = fluid.layers.io.double_buffer(file_obj_handle)
+
+    with fluid.unique_name.guard():
+
+        data, label = fluid.layers.read_file(file_obj)
+
+        emb = fluid.layers.embedding(input=data, size=[DICT_DIM, emb_dim])
+
+        conv_3 = fluid.nets.sequence_conv_pool(
+            input=emb,
+            num_filters=hid_dim,
+            filter_size=3,
+            act="tanh",
+            pool_type="sqrt")
+
+        conv_4 = fluid.nets.sequence_conv_pool(
+            input=emb,
+            num_filters=hid_dim,
+            filter_size=4,
+            act="tanh",
+            pool_type="sqrt")
+
+        prediction = fluid.layers.fc(input=[conv_3, conv_4],
+                                     size=class_dim,
+                                     act="softmax")
+
+        # cross entropy loss
+        cost = fluid.layers.cross_entropy(input=prediction, label=label)
+
+        # mean loss
+        avg_cost = fluid.layers.mean(x=cost)
+        acc = fluid.layers.accuracy(input=prediction, label=label)
+
+        if is_train:
+            # SGD optimizer
+            sgd_optimizer = fluid.optimizer.Adagrad(learning_rate=0.001)
+            sgd_optimizer.minimize(avg_cost)
+
+    return {'loss': avg_cost, 'log': [avg_cost, acc], 'file': file_obj_handle}
+
+
+def main():
+    train = fluid.Program()
+    startup = fluid.Program()
+    test = fluid.Program()
+
+    with fluid.program_guard(train, startup):
+        train_args = build_program(is_train=True)
+
+    with fluid.program_guard(test, startup):
+        test_args = build_program(is_train=False)
+
+    use_cuda = fluid.core.is_compiled_with_cuda()
+    # startup
+    place = fluid.CUDAPlace(0) if use_cuda else fluid.CPUPlace()
+    exe = fluid.Executor(place=place)
+    exe.run(startup)
+
+    train_exe = fluid.ParallelExecutor(
+        use_cuda=use_cuda,
+        loss_name=train_args['loss'].name,
+        main_program=train)
+    test_exe = fluid.ParallelExecutor(
+        use_cuda=use_cuda, main_program=test, share_vars_from=train_exe)
+
+    fetch_var_list = [var.name for var in train_args['log']]
+    for epoch_id in range(epoch_num):
+        # train
+        try:
+            batch_id = 0
+            while True:
+                loss, acc = map(numpy.array,
+                                train_exe.run(fetch_list=fetch_var_list))
+                print 'Train epoch', epoch_id, 'batch', batch_id, 'loss:', loss, 'acc:', acc
+                batch_id += 1
+        except fluid.core.EOFException:
+            print 'End of epoch', epoch_id
+            train_args['file'].reset()
+
+        # test
+        loss = []
+        acc = []
+        try:
+            while True:
+                loss_np, acc_np = map(numpy.array,
+                                      test_exe.run(fetch_list=fetch_var_list))
+                loss.append(loss_np[0])
+                acc.append(acc_np[0])
+        except:
+            test_args['file'].reset()
+            print 'Test loss:', numpy.mean(loss), 'acc:', numpy.mean(acc)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/python/paddle/fluid/tests/demo/text_classification/train.py b/python/paddle/fluid/tests/demo/text_classification/train.py
deleted file mode 100644
index 281c2869d642c7fe41a386c42208ca2da1dc2891..0000000000000000000000000000000000000000
--- a/python/paddle/fluid/tests/demo/text_classification/train.py
+++ /dev/null
@@ -1,146 +0,0 @@
-#   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.
-# 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.
-
-import paddle.fluid as fluid
-import numpy
-import sys
-
-TRAIN_FILES = ['train.recordio']
-TEST_FILES = ['test.recordio']
-
-DICT_DIM = 89528
-
-# embedding dim
-emb_dim = 128
-
-# hidden dim
-hid_dim = 128
-
-# hidden dim2
-hid_dim2 = 96
-
-# class num
-class_dim = 2
-
-
-def network_cfg(is_train, pass_num=100):
-    with fluid.unique_name.guard():
-        train_file_obj = fluid.layers.open_files(
-            filenames=TRAIN_FILES,
-            pass_num=pass_num,
-            shapes=[[-1, 1], [-1, 1]],
-            lod_levels=[1, 0],
-            dtypes=['int64', 'int64'])
-
-        test_file_obj = fluid.layers.open_files(
-            filenames=TEST_FILES,
-            pass_num=1,
-            shapes=[[-1, 1], [-1, 1]],
-            lod_levels=[1, 0],
-            dtypes=['int64', 'int64'])
-
-        if is_train:
-            file_obj = fluid.layers.shuffle(train_file_obj, buffer_size=1000)
-        else:
-            file_obj = test_file_obj
-
-        file_obj = fluid.layers.double_buffer(
-            file_obj,
-            name="train_double_buffer" if is_train else 'test_double_buffer')
-
-        data, label = fluid.layers.read_file(file_obj)
-
-        emb = fluid.layers.embedding(input=data, size=[DICT_DIM, emb_dim])
-
-        # sequence conv with window size = 3
-        win_size = 3
-        conv_3 = fluid.nets.sequence_conv_pool(
-            input=emb,
-            num_filters=hid_dim,
-            filter_size=win_size,
-            act="tanh",
-            pool_type="max")
-
-        # fc layer after conv
-        fc_1 = fluid.layers.fc(input=[conv_3], size=hid_dim2)
-
-        # probability of each class
-        prediction = fluid.layers.fc(input=[fc_1],
-                                     size=class_dim,
-                                     act="softmax")
-        # cross entropy loss
-        cost = fluid.layers.cross_entropy(input=prediction, label=label)
-
-        # mean loss
-        avg_cost = fluid.layers.mean(x=cost)
-        acc = fluid.layers.accuracy(input=prediction, label=label)
-
-        if is_train:
-            # SGD optimizer
-            sgd_optimizer = fluid.optimizer.Adagrad(learning_rate=0.01)
-            sgd_optimizer.minimize(avg_cost)
-
-        return {
-            'loss': avg_cost,
-            'log': [avg_cost, acc],
-            'file': train_file_obj if is_train else test_file_obj
-        }
-
-
-def main():
-    train = fluid.Program()
-    startup = fluid.Program()
-
-    with fluid.program_guard(train, startup):
-        train_args = network_cfg(is_train=True)
-
-    test = fluid.Program()
-
-    with fluid.program_guard(test, fluid.Program()):
-        test_args = network_cfg(is_train=False)
-
-    # startup
-    place = fluid.CUDAPlace(0)
-    exe = fluid.Executor(place=place)
-    exe.run(startup)
-
-    train_exe = fluid.ParallelExecutor(
-        use_cuda=True, loss_name=train_args['loss'].name, main_program=train)
-
-    fetch_var_list = [var.name for var in train_args['log']]
-    for i in xrange(sys.maxint):
-        result = map(numpy.array,
-                     train_exe.run(fetch_list=fetch_var_list
-                                   if i % 1000 == 0 else []))
-        if len(result) != 0:
-            print 'Train: ', result
-
-        if i % 1000 == 0:
-            test_exe = fluid.ParallelExecutor(
-                use_cuda=True, main_program=test, share_vars_from=train_exe)
-            loss = []
-            acc = []
-            try:
-                while True:
-                    loss_np, acc_np = map(
-                        numpy.array, test_exe.run(fetch_list=fetch_var_list))
-                    loss.append(loss_np[0])
-                    acc.append(acc_np[0])
-            except:
-                test_args['file'].reset()
-                print 'TEST: ', numpy.mean(loss), numpy.mean(acc)
-
-
-if __name__ == '__main__':
-    main()
diff --git a/python/paddle/fluid/tests/test_error_clip.py b/python/paddle/fluid/tests/test_error_clip.py
index 89f4c64975802dc1827ec17ed3626b91e36d6971..3dc858971c584cca947cd958680dbdcf25df9e99 100644
--- a/python/paddle/fluid/tests/test_error_clip.py
+++ b/python/paddle/fluid/tests/test_error_clip.py
@@ -36,7 +36,7 @@ with fluid.program_guard(main_program=prog):
     avg_cost = fluid.layers.mean(cost)
 
 prog_clip = prog.clone()
-prog_clip.block(0).var(hidden1.name).set_error_clip(
+prog_clip.block(0).var(hidden1.name)._set_error_clip(
     fluid.clip.ErrorClipByValue(
         max=CLIP_MAX, min=CLIP_MIN))
 
diff --git a/python/paddle/fluid/tests/test_if_else_op.py b/python/paddle/fluid/tests/test_if_else_op.py
index 1b58925599de62510ea9048f5210bb0b7e49f933..799c31dfe5161ff6aef47601f1b6f6e38885760b 100644
--- a/python/paddle/fluid/tests/test_if_else_op.py
+++ b/python/paddle/fluid/tests/test_if_else_op.py
@@ -19,6 +19,10 @@ from paddle.fluid.executor import Executor
 from paddle.fluid.optimizer import MomentumOptimizer
 import paddle.fluid.core as core
 import paddle.fluid as fluid
+from paddle.fluid.layers.control_flow import split_lod_tensor
+from paddle.fluid.layers.control_flow import merge_lod_tensor
+from paddle.fluid.layers.control_flow import ConditionalBlock
+
 import unittest
 import numpy as np
 
@@ -34,11 +38,10 @@ class TestMNISTIfElseOp(unittest.TestCase):
 
             limit = layers.fill_constant(shape=[1], dtype='int64', value=5)
             cond = layers.less_than(x=label, y=limit)
-            true_image, false_image = layers.split_lod_tensor(
-                input=image, mask=cond)
+            true_image, false_image = split_lod_tensor(input=image, mask=cond)
 
             true_out = layers.create_tensor(dtype='float32')
-            true_cond = layers.ConditionalBlock([cond])
+            true_cond = ConditionalBlock([cond])
 
             with true_cond.block():
                 hidden = layers.fc(input=true_image, size=100, act='tanh')
@@ -46,14 +49,14 @@ class TestMNISTIfElseOp(unittest.TestCase):
                 layers.assign(input=prob, output=true_out)
 
             false_out = layers.create_tensor(dtype='float32')
-            false_cond = layers.ConditionalBlock([cond])
+            false_cond = ConditionalBlock([cond])
 
             with false_cond.block():
                 hidden = layers.fc(input=false_image, size=200, act='tanh')
                 prob = layers.fc(input=hidden, size=10, act='softmax')
                 layers.assign(input=prob, output=false_out)
 
-            prob = layers.merge_lod_tensor(
+            prob = merge_lod_tensor(
                 in_true=true_out, in_false=false_out, mask=cond, x=image)
             loss = layers.cross_entropy(input=prob, label=label)
             avg_loss = layers.mean(loss)
diff --git a/python/paddle/fluid/tests/unittests/op_test.py b/python/paddle/fluid/tests/unittests/op_test.py
index 6824ede82b74c4e9783682149db870a471c35079..82b5e7cf0b3633eb04ab97c5300b1926b9d47cb6 100644
--- a/python/paddle/fluid/tests/unittests/op_test.py
+++ b/python/paddle/fluid/tests/unittests/op_test.py
@@ -251,7 +251,7 @@ class OpTest(unittest.TestCase):
             for out_name, out_dup in Operator.get_op_outputs(self.op_type):
                 fetch_list.append(str(out_name))
         # fetch_list = map(block.var, fetch_list)
-        if not isinstance(fetch_list[0], Variable):
+        if not isinstance(fetch_list[0], fluid.framework.Variable):
             fetch_list = map(block.var, fetch_list)
         outs = executor.run(program,
                             feed=feed_map,
diff --git a/python/paddle/fluid/tests/unittests/test_conditional_block.py b/python/paddle/fluid/tests/unittests/test_conditional_block.py
index 084b8d37386fac0366c190f5f30dd39467072498..d9f83905e6135e22f74e749857f9b0fbe464d3f4 100644
--- a/python/paddle/fluid/tests/unittests/test_conditional_block.py
+++ b/python/paddle/fluid/tests/unittests/test_conditional_block.py
@@ -18,14 +18,15 @@ import paddle.fluid.core as core
 from paddle.fluid.framework import default_startup_program, default_main_program
 from paddle.fluid.executor import Executor
 from paddle.fluid.backward import append_backward
+from paddle.fluid.layers.control_flow import ConditionalBlock
 import numpy
 
 
-class ConditionalBlock(unittest.TestCase):
+class ConditionalBlockTest(unittest.TestCase):
     def test_forward(self):
         data = layers.data(name='X', shape=[1], dtype='float32')
         data.stop_gradient = False
-        cond = layers.ConditionalBlock(inputs=[data])
+        cond = ConditionalBlock(inputs=[data])
         out = layers.create_tensor(dtype='float32')
         with cond.block():
             hidden = layers.fc(input=data, size=10)
diff --git a/python/paddle/fluid/tests/unittests/test_const_value.py b/python/paddle/fluid/tests/unittests/test_const_value.py
index d1075d514e9b2b692f271f10a005815a66b421fb..58ac6fa0a9a30a08a831111513777cca59062724 100644
--- a/python/paddle/fluid/tests/unittests/test_const_value.py
+++ b/python/paddle/fluid/tests/unittests/test_const_value.py
@@ -16,7 +16,7 @@ import unittest
 import paddle.fluid.framework as framework
 
 
-class ConditionalBlock(unittest.TestCase):
+class ConstantTest(unittest.TestCase):
     def test_const_value(self):
         self.assertEqual(framework.GRAD_VAR_SUFFIX, "@GRAD")
         self.assertEqual(framework.TEMP_VAR_NAME, "@TEMP@")
diff --git a/python/paddle/fluid/tests/unittests/test_dyn_rnn.py b/python/paddle/fluid/tests/unittests/test_dyn_rnn.py
index 0faed94deb4808783027d776e0f4c61da0db457a..4448de8839d7ad4ad1f70ecdc4ac94da1e619adb 100644
--- a/python/paddle/fluid/tests/unittests/test_dyn_rnn.py
+++ b/python/paddle/fluid/tests/unittests/test_dyn_rnn.py
@@ -17,6 +17,12 @@ import paddle
 import unittest
 import numpy
 
+from paddle.fluid.layers.control_flow import lod_rank_table
+from paddle.fluid.layers.control_flow import max_sequence_len
+from paddle.fluid.layers.control_flow import lod_tensor_to_array
+from paddle.fluid.layers.control_flow import array_to_lod_tensor
+from paddle.fluid.layers.control_flow import shrink_memory
+
 
 class TestDynRNN(unittest.TestCase):
     def setUp(self):
@@ -38,12 +44,11 @@ class TestDynRNN(unittest.TestCase):
 
             label = fluid.layers.data(name='label', shape=[1], dtype='float32')
 
-            rank_table = fluid.layers.lod_rank_table(x=sent_emb)
+            rank_table = lod_rank_table(x=sent_emb)
 
-            sent_emb_array = fluid.layers.lod_tensor_to_array(
-                x=sent_emb, table=rank_table)
+            sent_emb_array = lod_tensor_to_array(x=sent_emb, table=rank_table)
 
-            seq_len = fluid.layers.max_sequence_len(rank_table=rank_table)
+            seq_len = max_sequence_len(rank_table=rank_table)
             i = fluid.layers.fill_constant(shape=[1], dtype='int64', value=0)
             i.stop_gradient = False
 
@@ -66,7 +71,7 @@ class TestDynRNN(unittest.TestCase):
                 mem = fluid.layers.array_read(array=mem_array, i=i)
                 ipt = fluid.layers.array_read(array=sent_emb_array, i=i)
 
-                mem = fluid.layers.shrink_memory(x=mem, i=i, table=rank_table)
+                mem = shrink_memory(x=mem, i=i, table=rank_table)
 
                 hidden = fluid.layers.fc(input=[mem, ipt], size=100, act='tanh')
 
@@ -75,8 +80,7 @@ class TestDynRNN(unittest.TestCase):
                 fluid.layers.array_write(x=hidden, i=i, array=mem_array)
                 fluid.layers.less_than(x=i, y=seq_len, cond=cond)
 
-            all_timesteps = fluid.layers.array_to_lod_tensor(
-                x=out, table=rank_table)
+            all_timesteps = array_to_lod_tensor(x=out, table=rank_table)
             last = fluid.layers.sequence_last_step(input=all_timesteps)
             logits = fluid.layers.fc(input=last, size=1, act=None)
             loss = fluid.layers.sigmoid_cross_entropy_with_logits(
diff --git a/python/paddle/fluid/tests/unittests/test_learning_rate_scheduler.py b/python/paddle/fluid/tests/unittests/test_learning_rate_scheduler.py
index 6382e290eb30c621da64d5c600be6d8a7c6254f1..e628195e7265ec564bd64a212c4a35fdff495063 100644
--- a/python/paddle/fluid/tests/unittests/test_learning_rate_scheduler.py
+++ b/python/paddle/fluid/tests/unittests/test_learning_rate_scheduler.py
@@ -91,20 +91,21 @@ class TestLearningRateDecay(unittest.TestCase):
 
     def check_decay_with_place(self, place, python_decay_fn, fluid_decay_fn,
                                kwargs):
+        main_prog = fluid.Program()
+        startup_prog = fluid.Program()
 
-        decayed_lr = fluid_decay_fn(**kwargs)
+        with fluid.program_guard(main_prog, startup_prog):
+            decayed_lr = fluid_decay_fn(**kwargs)
 
         place = fluid.CPUPlace()
         exe = fluid.Executor(place)
 
-        exe.run(fluid.default_startup_program())
+        exe.run(startup_prog)
 
-        fluid.memory_optimize(fluid.default_main_program())
+        fluid.memory_optimize(main_prog)
 
         for step in range(10):
-            lr_val, = exe.run(fluid.default_main_program(),
-                              feed={},
-                              fetch_list=[decayed_lr])
+            lr_val, = exe.run(main_prog, feed={}, fetch_list=[decayed_lr])
             python_decayed_lr = python_decay_fn(
                 global_step=float(step), **kwargs)
             self.assertAlmostEqual(
diff --git a/python/paddle/fluid/tests/unittests/test_lod_rank_table.py b/python/paddle/fluid/tests/unittests/test_lod_rank_table.py
index bac5e502318397b43e9867d5fc9e4e8cd33394b8..16e85830ffa51ec428951570cc7a038f3d10c873 100644
--- a/python/paddle/fluid/tests/unittests/test_lod_rank_table.py
+++ b/python/paddle/fluid/tests/unittests/test_lod_rank_table.py
@@ -12,7 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from paddle.fluid.layers import lod_rank_table, data
+from paddle.fluid.layers import data
+from paddle.fluid.layers.control_flow import lod_rank_table
 from paddle.fluid.executor import Executor
 import paddle.fluid.core as core
 import numpy
diff --git a/python/paddle/fluid/tests/unittests/test_lod_tensor_array_ops.py b/python/paddle/fluid/tests/unittests/test_lod_tensor_array_ops.py
index cebe6997bb4152519dabbabfc0404d6036bc4e65..5a4580116bc7009c73f1de14a265bf2cea5acf9b 100644
--- a/python/paddle/fluid/tests/unittests/test_lod_tensor_array_ops.py
+++ b/python/paddle/fluid/tests/unittests/test_lod_tensor_array_ops.py
@@ -20,6 +20,11 @@ from paddle.fluid.framework import Program, program_guard
 from paddle.fluid.executor import Executor
 from paddle.fluid.backward import append_backward
 
+from paddle.fluid.layers.control_flow import lod_rank_table
+from paddle.fluid.layers.control_flow import max_sequence_len
+from paddle.fluid.layers.control_flow import lod_tensor_to_array
+from paddle.fluid.layers.control_flow import array_to_lod_tensor
+
 
 class TestCPULoDTensorArrayOps(unittest.TestCase):
     def place(self):
@@ -137,13 +142,13 @@ class TestCPULoDTensorArrayOps(unittest.TestCase):
         with program_guard(program):
             x = layers.data(name='x', shape=[10])
             x.persistable = True
-            table = layers.lod_rank_table(x, level=level)
-            max_len = layers.max_sequence_len(table)
+            table = lod_rank_table(x, level=level)
+            max_len = max_sequence_len(table)
             max_len.persistable = True
-            array = layers.lod_tensor_to_array(x, table)
+            array = lod_tensor_to_array(x, table)
             array.persistable = True
 
-            result = layers.array_to_lod_tensor(array, table)
+            result = array_to_lod_tensor(array, table)
             result.persistable = True
         exe = Executor(place)
         scope = core.Scope()
@@ -181,9 +186,9 @@ class TestCPULoDTensorArrayOpGrad(unittest.TestCase):
         with program_guard(program):
             x = layers.data(
                 name='x', shape=[1], dtype='float32', stop_gradient=False)
-            table = layers.lod_rank_table(x, level=0)
-            array = layers.lod_tensor_to_array(x, table)
-            result = layers.array_to_lod_tensor(array, table)
+            table = lod_rank_table(x, level=0)
+            array = lod_tensor_to_array(x, table)
+            result = array_to_lod_tensor(array, table)
 
             mean = layers.mean(result)
 
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_executor_mnist.py b/python/paddle/fluid/tests/unittests/test_parallel_executor_mnist.py
index b21e16439a5070e5f6d763e1617d4cfffe8bd618..76389d916fc39f470a22aed4792bf7b754600436 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_executor_mnist.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_executor_mnist.py
@@ -107,44 +107,24 @@ class TestMNIST(TestParallelExecutorBase):
         label = np.ones(shape=[32, 1], dtype='int64')
         return img, label
 
-    # simple_fc
-    def check_simple_fc_convergence(self, use_cuda, use_reduce=False):
+    def _compare_reduce_and_allreduce(self, model, use_cuda, random_data=True):
         if use_cuda and not core.is_compiled_with_cuda():
             return
-        self.check_network_convergence(simple_fc_net, use_cuda=use_cuda)
         self.check_network_convergence(
-            simple_fc_net, use_cuda=use_cuda, allow_op_delay=True)
-
-        img, label = self._init_data()
-
+            model, use_cuda=use_cuda, use_reduce=True)
         self.check_network_convergence(
-            simple_fc_net,
-            feed_dict={"image": img,
-                       "label": label},
-            use_cuda=use_cuda,
-            use_reduce=use_reduce)
+            model, use_cuda=use_cuda, allow_op_delay=True, use_reduce=True)
 
-    def check_simple_fc_convergence_with_Reduce(self, use_cuda):
-        if use_cuda and not core.is_compiled_with_cuda():
-            return
-        self.check_network_convergence(
-            simple_fc_net, use_cuda=use_cuda, use_reduce=True)
-        self.check_network_convergence(
-            simple_fc_net,
-            use_cuda=use_cuda,
-            allow_op_delay=True,
-            use_reduce=True)
-
-        img, label = self._init_data()
+        img, label = self._init_data(random_data)
 
         all_reduce_first_loss, all_reduce_last_loss = self.check_network_convergence(
-            simple_fc_net,
+            model,
             feed_dict={"image": img,
                        "label": label},
             use_cuda=use_cuda,
             use_reduce=False)
         reduce_first_loss, reduce_last_loss = self.check_network_convergence(
-            simple_fc_net,
+            model,
             feed_dict={"image": img,
                        "label": label},
             use_cuda=use_cuda,
@@ -153,7 +133,24 @@ class TestMNIST(TestParallelExecutorBase):
         for loss in zip(all_reduce_first_loss, reduce_first_loss):
             self.assertAlmostEquals(loss[0], loss[1], delta=1e-6)
         for loss in zip(all_reduce_last_loss, reduce_last_loss):
-            self.assertAlmostEquals(loss[0], loss[1], delta=1e-6)
+            self.assertAlmostEquals(loss[0], loss[1], delta=1e-4)
+
+    # simple_fc
+    def check_simple_fc_convergence(self, use_cuda, use_reduce=False):
+        if use_cuda and not core.is_compiled_with_cuda():
+            return
+        self.check_network_convergence(simple_fc_net, use_cuda=use_cuda)
+        self.check_network_convergence(
+            simple_fc_net, use_cuda=use_cuda, allow_op_delay=True)
+
+        img, label = self._init_data()
+
+        self.check_network_convergence(
+            simple_fc_net,
+            feed_dict={"image": img,
+                       "label": label},
+            use_cuda=use_cuda,
+            use_reduce=use_reduce)
 
     def test_simple_fc(self):
         # use_cuda
@@ -162,8 +159,8 @@ class TestMNIST(TestParallelExecutorBase):
 
     def test_simple_fc_with_new_strategy(self):
         # use_cuda, use_reduce
-        self.check_simple_fc_convergence_with_Reduce(True)
-        self.check_simple_fc_convergence_with_Reduce(False)
+        self._compare_reduce_and_allreduce(simple_fc_net, True)
+        self._compare_reduce_and_allreduce(simple_fc_net, False)
 
     def check_simple_fc_parallel_accuracy(self, use_cuda):
         if use_cuda and not core.is_compiled_with_cuda():
@@ -209,39 +206,13 @@ class TestMNIST(TestParallelExecutorBase):
                        "label": label},
             use_cuda=use_cuda)
 
-    def check_batchnorm_fc_convergence_use_reduce(self, use_cuda):
-        if use_cuda and not core.is_compiled_with_cuda():
-            return
-        self.check_network_convergence(
-            fc_with_batchnorm, use_cuda=use_cuda, use_reduce=True)
-
-        img, label = self._init_data()
-
-        all_reduce_first_loss, all_reduce_last_loss = self.check_network_convergence(
-            fc_with_batchnorm,
-            feed_dict={"image": img,
-                       "label": label},
-            use_cuda=use_cuda,
-            use_reduce=False)
-        reduce_first_loss, reduce_last_loss = self.check_network_convergence(
-            fc_with_batchnorm,
-            feed_dict={"image": img,
-                       "label": label},
-            use_cuda=use_cuda,
-            use_reduce=True)
-
-        for loss in zip(all_reduce_first_loss, reduce_first_loss):
-            self.assertAlmostEquals(loss[0], loss[1], delta=1e-6)
-        for loss in zip(all_reduce_last_loss, reduce_last_loss):
-            self.assertAlmostEquals(loss[0], loss[1], delta=1e-4)
-
     def test_batchnorm_fc(self):
         self.check_batchnorm_fc_convergence(True)
         self.check_batchnorm_fc_convergence(False)
 
     def test_batchnorm_fc_with_new_strategy(self):
-        self.check_batchnorm_fc_convergence_use_reduce(True)
-        self.check_batchnorm_fc_convergence_use_reduce(False)
+        self._compare_reduce_and_allreduce(fc_with_batchnorm, True)
+        self._compare_reduce_and_allreduce(fc_with_batchnorm, False)
 
 
 if __name__ == '__main__':
diff --git a/python/paddle/fluid/tests/unittests/test_parallel_op.py b/python/paddle/fluid/tests/unittests/test_parallel_op.py
index 9ec05e02973138e3ec233ef07f98afd598ec86b1..18309f457704f522457daefdb8464ae5df2ffcfb 100644
--- a/python/paddle/fluid/tests/unittests/test_parallel_op.py
+++ b/python/paddle/fluid/tests/unittests/test_parallel_op.py
@@ -120,7 +120,7 @@ class BaseParallelForTest(unittest.TestCase):
                 pd = fluid.layers.ParallelDo(places, use_nccl=use_nccl)
                 data = next(generator)
 
-                if isinstance(data, fluid.Variable):
+                if isinstance(data, fluid.framework.Variable):
                     data = [data]
 
                 with pd.do():
diff --git a/python/paddle/fluid/tests/unittests/test_reorder_lod_tensor.py b/python/paddle/fluid/tests/unittests/test_reorder_lod_tensor.py
index a70321bd800bf25eeb9e5d197ea7e08626b9aede..6e1cd56b3e309fc014dc981a1e3aa841159fca15 100644
--- a/python/paddle/fluid/tests/unittests/test_reorder_lod_tensor.py
+++ b/python/paddle/fluid/tests/unittests/test_reorder_lod_tensor.py
@@ -15,6 +15,7 @@
 import unittest
 import paddle.fluid as fluid
 import paddle.fluid.core as core
+from paddle.fluid.layers.control_flow import lod_rank_table
 import numpy
 
 
@@ -34,7 +35,7 @@ class TestReorderLoDTensor(unittest.TestCase):
         dat.stop_gradient = False
         rank_dat = fluid.layers.data(
             name=cls.data_desc[1][0], shape=cls.data_desc[1][1])
-        table = fluid.layers.lod_rank_table(rank_dat)
+        table = lod_rank_table(rank_dat)
         new_dat = fluid.layers.reorder_lod_tensor_by_rank(
             x=dat, rank_table=table)
         loss = fluid.layers.reduce_sum(new_dat)
diff --git a/python/paddle/fluid/tests/unittests/test_shrink_rnn_memory.py b/python/paddle/fluid/tests/unittests/test_shrink_rnn_memory.py
index 24bc2cbaf86e8ed2c6a359c4c4d9a1e1507df746..6f0e337034d1010880514181654170316fd9db19 100644
--- a/python/paddle/fluid/tests/unittests/test_shrink_rnn_memory.py
+++ b/python/paddle/fluid/tests/unittests/test_shrink_rnn_memory.py
@@ -21,6 +21,9 @@ from paddle.fluid.framework import default_main_program, switch_main_program
 from paddle.fluid.framework import Program
 import numpy as np
 
+from paddle.fluid.layers.control_flow import shrink_memory
+from paddle.fluid.layers.control_flow import lod_rank_table
+
 
 class TestShrinkRNNMemoryBase(unittest.TestCase):
     def setUp(self):
@@ -30,15 +33,15 @@ class TestShrinkRNNMemoryBase(unittest.TestCase):
         x.stop_gradient = False
         rank_table_tensor = layers.data(
             'rank_table_tensor', shape=[1], dtype='float32', lod_level=1)
-        table = layers.lod_rank_table(x=rank_table_tensor)
+        table = lod_rank_table(x=rank_table_tensor)
         i = layers.zeros(dtype='int64', shape=[1])
-        self.mem1 = layers.shrink_memory(x=x, i=i, table=table)
+        self.mem1 = shrink_memory(x=x, i=i, table=table)
         i = layers.increment(x=i)
         i.stop_gradient = True
-        self.mem2 = layers.shrink_memory(x=self.mem1, i=i, table=table)
+        self.mem2 = shrink_memory(x=self.mem1, i=i, table=table)
         i = layers.increment(x=i)
         i.stop_gradient = True
-        self.mem3 = layers.shrink_memory(x=self.mem2, i=i, table=table)
+        self.mem3 = shrink_memory(x=self.mem2, i=i, table=table)
         mem3_mean = layers.mean(self.mem3)
         append_backward(loss=mem3_mean)
         self.x_grad = self.main_program.global_block().var('x@GRAD')
diff --git a/python/paddle/fluid/tests/unittests/test_split_and_merge_lod_tensor_op.py b/python/paddle/fluid/tests/unittests/test_split_and_merge_lod_tensor_op.py
index 0916ed7c9f1e2d6d90c6908983fdc8b177aecbb9..ea1146166d34a31efbd859318b411cea50895fe1 100644
--- a/python/paddle/fluid/tests/unittests/test_split_and_merge_lod_tensor_op.py
+++ b/python/paddle/fluid/tests/unittests/test_split_and_merge_lod_tensor_op.py
@@ -19,6 +19,8 @@ import paddle.fluid.layers as layers
 from paddle.fluid.framework import Program, program_guard
 from paddle.fluid.executor import Executor
 from paddle.fluid.backward import append_backward
+from paddle.fluid.layers.control_flow import split_lod_tensor
+from paddle.fluid.layers.control_flow import merge_lod_tensor
 
 
 class TestCPULoDTensorArrayOps(unittest.TestCase):
@@ -96,12 +98,11 @@ class TestCPULoDTensorArrayOps(unittest.TestCase):
             y = layers.data(name='y', shape=[1])
             y.persistable = True
 
-            out_true, out_false = layers.split_lod_tensor(
-                input=x, mask=y, level=level)
+            out_true, out_false = split_lod_tensor(input=x, mask=y, level=level)
             out_true.persistable = True
             out_false.persistable = True
 
-            out = layers.merge_lod_tensor(
+            out = merge_lod_tensor(
                 in_true=out_true, in_false=out_false, mask=y, x=x, level=level)
 
             out.persistable = True
@@ -142,9 +143,8 @@ class TestCPUSplitMergeLoDTensorGrad(unittest.TestCase):
 
             level = 0
 
-            out_true, out_false = layers.split_lod_tensor(
-                input=x, mask=y, level=level)
-            out = layers.merge_lod_tensor(
+            out_true, out_false = split_lod_tensor(input=x, mask=y, level=level)
+            out = merge_lod_tensor(
                 in_true=out_true, in_false=out_false, mask=y, x=x, level=level)
             mean = layers.mean(out)
 
diff --git a/python/paddle/fluid/transpiler/distribute_transpiler.py b/python/paddle/fluid/transpiler/distribute_transpiler.py
index 22a461125e9f9ae7a8a6b51d02774aaa163f7b2a..2dd9ec3e473e538cce19e9c6698ac4a2f76bcba7 100644
--- a/python/paddle/fluid/transpiler/distribute_transpiler.py
+++ b/python/paddle/fluid/transpiler/distribute_transpiler.py
@@ -38,7 +38,7 @@ from ps_dispatcher import RoundRobin, HashName, PSDispatcher
 from .. import core, framework
 from ..framework import Program, default_main_program, \
                         default_startup_program, Block, \
-                        Variable, Parameter, grad_var_name
+                        Parameter, grad_var_name
 from details import *
 
 LOOKUP_TABLE_TYPE = "lookup_table"
@@ -918,7 +918,8 @@ class DistributeTranspiler(object):
         # create table optimize block in pserver program
         table_opt_op = [
             op for op in self.optimize_ops
-            if op.input("Param")[0] == self.table_name
+            if 'Param' in op.input_names and op.input("Param")[0] ==
+            self.table_name
         ][0]
         table_opt_block = pserver_program.create_block(pre_block_idx)
         # only support sgd now
@@ -1075,7 +1076,6 @@ class DistributeTranspiler(object):
         ]
 
     def _clone_var(self, block, var, persistable=True):
-        assert isinstance(var, Variable)
         return block.create_var(
             name=var.name,
             shape=var.shape,
diff --git a/python/paddle/fluid/transpiler/memory_optimization_transpiler.py b/python/paddle/fluid/transpiler/memory_optimization_transpiler.py
index 353c82f71632c0fa398bcfcf836cc382e7e501f7..0ca5cf813b51e200da5edd5830767ad9457acec2 100644
--- a/python/paddle/fluid/transpiler/memory_optimization_transpiler.py
+++ b/python/paddle/fluid/transpiler/memory_optimization_transpiler.py
@@ -14,7 +14,7 @@
 
 from collections import defaultdict
 from .. import core
-from ..framework import Program, default_main_program, Parameter, Variable
+from ..framework import Program, default_main_program, Parameter
 from ..backward import _rename_arg_
 
 dtype_to_size = {