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

cmake/flags.cmake

@@ -102,7 +102,6 @@ set(COMMON_FLAGS
     -fno-omit-frame-pointer
     -Wall
     -Wextra
-    -Werror
     -Wnon-virtual-dtor
     -Wdelete-non-virtual-dtor
     -Wno-unused-parameter
@@ -115,6 +114,11 @@ set(COMMON_FLAGS
     -Wno-error=terminate  # Warning in PADDLE_ENFORCE
 )
 
+# https://github.com/PaddlePaddle/Paddle/issues/12773
+if (NOT WIN32)
+list(APPEND COMMON_FLAGS -Werror)
+endif()
+
 set(GPU_COMMON_FLAGS
     -fPIC
     -fno-omit-frame-pointer

doc/fluid/design/others/graph_survey.md

@@ -28,7 +28,7 @@ def get_symbol(num_classes=10, **kwargs):
 
 
 
-Varible here is actually a Symbol. Every basic Symbol will correspond to one Node, and every Node has its own NodeAttr. There is a op field in NodeAttr class, when a Symbol represents Variable(often input data), the op field is null.
+Varible here is actually a Symbol. Every basic Symbol will correspond to one Node, and every Node has its own AnyAttr. There is a op field in AnyAttr class, when a Symbol represents Variable(often input data), the op field is null.
 
 Symbol contains a data member, std::vector<NodeEntry> outputs, and NodeEntry cantains a poniter to Node. We can follow the Node pointer to get all the Graph.
 

paddle/fluid/API.spec

@@ -78,7 +78,7 @@ paddle.fluid.io.load_vars ArgSpec(args=['executor', 'dirname', 'main_program', '
 paddle.fluid.io.load_params ArgSpec(args=['executor', 'dirname', 'main_program', 'filename'], varargs=None, keywords=None, defaults=(None, None))
 paddle.fluid.io.load_persistables ArgSpec(args=['executor', 'dirname', 'main_program', 'filename'], varargs=None, keywords=None, defaults=(None, None))
 paddle.fluid.io.save_inference_model ArgSpec(args=['dirname', 'feeded_var_names', 'target_vars', 'executor', 'main_program', 'model_filename', 'params_filename', 'export_for_deployment'], varargs=None, keywords=None, defaults=(None, None, None, True))
-paddle.fluid.io.load_inference_model ArgSpec(args=['dirname', 'executor', 'model_filename', 'params_filename'], varargs=None, keywords=None, defaults=(None, None))
+paddle.fluid.io.load_inference_model ArgSpec(args=['dirname', 'executor', 'model_filename', 'params_filename', 'pserver_endpoints'], varargs=None, keywords=None, defaults=(None, None, None))
 paddle.fluid.io.get_inference_program ArgSpec(args=['target_vars', 'main_program'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.initializer.ConstantInitializer.__init__ ArgSpec(args=['self', 'value', 'force_cpu'], varargs=None, keywords=None, defaults=(0.0, False))
 paddle.fluid.initializer.UniformInitializer.__init__ ArgSpec(args=['self', 'low', 'high', 'seed'], varargs=None, keywords=None, defaults=(-1.0, 1.0, 0))

paddle/fluid/framework/ir/CMakeLists.txt

@@ -5,8 +5,12 @@ cc_library(pass SRCS pass.cc DEPS graph node graph_helper)
 cc_library(graph_viz_pass SRCS graph_viz_pass.cc DEPS graph pass graph_helper)
 cc_library(graph_traits SRCS graph_traits.cc DEPS graph)
 cc_library(graph_pattern_detecter SRCS graph_pattern_detecter.cc DEPS graph graph_helper graph_traits)
+cc_library(fc_fuse_pass SRCS fc_fuse_pass.cc DEPS graph graph_pattern_detecter)
+cc_library(infer_clean_graph_pass SRCS infer_clean_graph_pass.cc DEPS graph pass)
+
 
 cc_test(pass_test SRCS pass_test.cc DEPS graph pass graph_helper)
 cc_test(graph_test SRCS graph_test.cc DEPS graph graph_helper op_registry)
 cc_test(graph_helper_test SRCS graph_helper_test.cc DEPS graph graph_helper op_registry)
 cc_test(test_graph_pattern_detecter SRCS graph_pattern_detecter_tester.cc DEPS graph_pattern_detecter)
+cc_test(test_fc_fuse_pass SRCS fc_fuse_pass_tester.cc DEPS fc_fuse_pass graph_pattern_detecter graph pass graph_traits framework_proto)

paddle/fluid/framework/ir/fc_fuse_pass.cc

+// 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.
+
+#include "paddle/fluid/framework/ir/fc_fuse_pass.h"
+#include <string>
+#include <vector>
+#include "paddle/fluid/platform/enforce.h"
+
+namespace paddle {
+namespace framework {
+namespace ir {
+
+bool VarOutLinksToOp(Node* node, const std::string& op_type) {
+  for (auto* out : node->outputs) {
+    if (out->IsOp() && out->Op()->Type() == op_type) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void BuildFCPattern(PDPattern* pattern) {
+  // make sure the selected MUL op has one input argument is a parameter.
+  auto* mul_parameter_var = pattern->NewNode(
+      [](Node* node) {
+        return node->IsVar() && node->outputs.size() == 1UL &&
+               node->outputs.front()->Op()->Type() == "mul" && node->Var() &&
+               node->Var()->Persistable();  // check is a parameter
+      },
+      "mul_weight" /*name*/);
+
+  auto* mul_tmp_input_var = pattern->NewNode(
+      [](Node* node) {
+        bool result =
+            node->IsVar() && node->outputs.size() >= 1UL && node->Var() &&
+            !node->Var()->Persistable();  // this input is not an parameter.
+        if (!result) return false;
+        // check whether one output is MUL op.
+        for (auto* op : node->outputs) {
+          if (op->IsOp() && op->Op()->Type() == "mul") return true;
+        }
+        return false;
+      },
+      "mul_tmp_var" /*name*/);
+
+  // select a MUL op
+  auto* mul_op = pattern->NewNode(
+      [](Node* node) {
+        return node->IsOp() &&               // start from an Op
+               node->Op()->Type() == "mul";  // type is mul
+        // the output should be consumed only by one element_add, that check
+        // leaves in a Var PDNode.
+      },
+      "mul" /*name*/);
+
+  // make sure the MUL op's output has only one consumer and links to an
+  // ELEMENTWISE_ADD op.
+  auto* mul_out_var = pattern->NewNode(
+      [](Node* node) {
+        return node->IsVar() &&                  // starts from a Var
+               node->outputs.size() == 1UL &&    // only has one consumer
+               node->outputs.front()->IsOp() &&  // check basic logic
+               node->Var() &&                    // not a ControlDepVar
+               node->outputs.front()->Op()->Type() ==
+                   "elementwise_add";  // a very strong validation
+      },
+      "mul_out");
+  // this check is not essential, just to make the corresponding variable Node
+  // retrival easier.
+  auto* elementwise_add_tmp_var = pattern->NewNode(
+      [](Node* node) {
+        return node->IsVar() && node->outputs.size() >= 1UL && node->Var() &&
+               VarOutLinksToOp(node, "elementwise_add");
+      },
+      "elementwise_add_tmpvar");
+
+  // select an ELEMENTWISE_ADD op
+  auto* elementwise_add_op = pattern->NewNode(
+      [](Node* node) {
+        return node->IsOp() && node->Op()->Type() == "elementwise_add";
+      },
+      "elementwise_add" /*name*/);
+
+  // get the ELEMENTWISE_ADD op's output
+  auto* elementwise_add_out_var = pattern->NewNode(
+      [](Node* node) {
+        return node->IsVar() && node->inputs.size() == 1UL && node->Var() &&
+               node->inputs.front()->Op()->Type() == "elementwise_add";
+      },
+      "elementwise_add_out");
+
+  pattern->AddEdge(mul_parameter_var, mul_op);
+  pattern->AddEdge(mul_tmp_input_var, mul_op);
+  pattern->AddEdge(mul_op, mul_out_var);
+  pattern->AddEdge(mul_out_var, elementwise_add_op);
+  pattern->AddEdge(elementwise_add_tmp_var, elementwise_add_op);
+  pattern->AddEdge(elementwise_add_op, elementwise_add_out_var);
+}
+
+// Replace the node `from` in the links to `to`
+bool LinksReplace(std::vector<Node*>* links, Node* from, Node* to) {
+  for (auto*& n : *links) {
+    if (n == from) {
+      n = to;
+      return true;
+    }
+  }
+  return false;
+}
+
+std::unique_ptr<ir::Graph> FCFusePass::ApplyImpl(
+    std::unique_ptr<ir::Graph> graph) const {
+  PADDLE_ENFORCE(graph.get());
+
+  std::unordered_set<Node*> nodes2delete;
+
+  GraphPatternDetecter gpd;
+  BuildFCPattern(gpd.mutable_pattern());
+
+#define GET_NODE(id)                                             \
+  PADDLE_ENFORCE(subgraph.count(gpd.pattern().RetriveNode(#id)), \
+                 "pattern has no Node called %s", #id);          \
+  auto* id = subgraph.at(gpd.pattern().RetriveNode(#id));        \
+  PADDLE_ENFORCE_NOT_NULL(id, "subgraph has no node %s", #id);
+
+  auto handler = [&](const GraphPatternDetecter::subgraph_t& subgraph,
+                     Graph* g) {
+    VLOG(4) << "handle FC fuse";
+    // Currently, there is no FC op available, so I will just simulate the
+    // scenerio.
+    // FC's fusion is simple, just op fuse, no need to process the
+    // parameters.
+    GET_NODE(mul_tmp_var);             // x
+    GET_NODE(mul_weight);              // Y
+    GET_NODE(elementwise_add_tmpvar);  // bias
+    GET_NODE(elementwise_add_out);     // Out
+    GET_NODE(mul);                     // MUL op
+    GET_NODE(elementwise_add);         // ELEMENT_ADD op
+    GET_NODE(mul_out);                 // tmp
+#undef GET_NODE
+
+    // Create an FC Node.
+    OpDesc desc;
+    std::string fc_x_in = mul_tmp_var->Name();
+    std::string fc_Y_in = mul_weight->Name();
+    std::string fc_bias_in = elementwise_add_tmpvar->Name();
+    std::string fc_out = elementwise_add_out->Name();
+    desc.SetInput("Input", std::vector<std::string>({fc_x_in}));
+    desc.SetInput("W", std::vector<std::string>({fc_Y_in}));
+    desc.SetInput("Bias", std::vector<std::string>({fc_bias_in}));
+    desc.SetOutput("Out", std::vector<std::string>({fc_out}));
+    desc.SetType("fc");
+    auto fc_node = g->CreateOpNode(&desc);  // OpDesc will be copied.
+    fc_node->inputs =
+        std::vector<Node*>({mul_tmp_var, mul_weight, elementwise_add_tmpvar});
+    fc_node->outputs.push_back(elementwise_add_out);
+
+    // Update link relatons
+    PADDLE_ENFORCE(LinksReplace(&mul_tmp_var->outputs, mul, fc_node));
+    PADDLE_ENFORCE(LinksReplace(&mul_weight->outputs, mul, fc_node));
+    PADDLE_ENFORCE(LinksReplace(&elementwise_add_tmpvar->outputs,
+                                elementwise_add, fc_node));
+    PADDLE_ENFORCE(
+        LinksReplace(&elementwise_add_out->inputs, elementwise_add, fc_node));
+
+    // Drop old nodes
+    graph->RemoveNode(mul);
+    graph->RemoveNode(elementwise_add);
+    graph->RemoveNode(mul_out);  // tmp variable
+  };
+
+  gpd(graph.get(), handler);
+
+  return graph;
+}
+
+}  // namespace ir
+}  // namespace framework
+}  // namespace paddle
+
+REGISTER_PASS(fc_fuse_pass, paddle::framework::ir::FCFusePass);

paddle/fluid/framework/ir/fc_fuse_pass.h

+// 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.
+
+#include "paddle/fluid/framework/ir/graph.h"
+#include "paddle/fluid/framework/ir/graph_pattern_detecter.h"
+#include "paddle/fluid/framework/ir/pass.h"
+
+namespace paddle {
+namespace framework {
+namespace ir {
+
+/*
+ * Fuse the MUL and ELEMENTWISE_ADD to a FCOp.
+ */
+class FCFusePass : public Pass {
+ public:
+  virtual ~FCFusePass() {}
+
+ protected:
+  std::unique_ptr<ir::Graph> ApplyImpl(std::unique_ptr<ir::Graph> graph) const;
+};
+
+}  // namespace ir
+}  // namespace framework
+}  // namespace paddle

paddle/fluid/framework/ir/fc_fuse_pass_tester.cc

+// 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.
+
+#include "paddle/fluid/framework/ir/fc_fuse_pass.h"
+
+#include <gtest/gtest.h>
+
+namespace paddle {
+namespace framework {
+namespace ir {
+
+void SetOp(ProgramDesc* prog, const std::string& type,
+           const std::vector<std::string>& inputs,
+           const std::vector<std::string>& outputs) {
+  auto* op = prog->MutableBlock(0)->AppendOp();
+  op->SetType(type);
+  op->SetInput("Xs", inputs);
+  op->SetOutput("Ys", outputs);
+}
+
+// a->OP0->b
+// a->OP1->c
+// (b, c)->mul->d
+// (d, e)->elementwise_add->f
+ProgramDesc BuildProgramDesc() {
+  ProgramDesc prog;
+  for (auto& v : std::vector<std::string>({"a", "b", "c", "d", "e", "f"})) {
+    auto* var = prog.MutableBlock(0)->Var(v);
+    var->SetType(proto::VarType::SELECTED_ROWS);
+    if (v == "c") {
+      var->SetPersistable(true);
+    }
+  }
+
+  SetOp(&prog, "OP0", std::vector<std::string>({"a"}),
+        std::vector<std::string>({"b"}));
+  SetOp(&prog, "OP1", std::vector<std::string>({"a"}),
+        std::vector<std::string>({"c"}));
+  SetOp(&prog, "mul", std::vector<std::string>({"b", "c"}),
+        std::vector<std::string>({"d"}));
+  SetOp(&prog, "elementwise_add", std::vector<std::string>({"d", "e"}),
+        std::vector<std::string>({"f"}));
+
+  return prog;
+}
+
+TEST(FCFusePass, basic) {
+  auto prog = BuildProgramDesc();
+
+  std::unique_ptr<ir::Graph> graph(new ir::Graph(prog));
+
+  auto pass = PassRegistry::Instance().Get("fc_fuse_pass");
+
+  int pre_nodes = graph->Nodes().size();
+
+  graph = pass->Apply(std::move(graph));
+
+  int after_nodes = graph->Nodes().size();
+
+  // Remove 3 Nodes: MUL,ELEMENTWISE_ADD, mul_out
+  // Add 1 Node: FC
+  EXPECT_EQ(pre_nodes - 2, after_nodes);
+
+  // Assert fc op in newly generated graph
+  int fc_count = 0;
+
+  for (auto* node : graph->Nodes()) {
+    if (node->IsOp() && node->Op()->Type() == "fc") {
+      ++fc_count;
+    }
+  }
+  EXPECT_EQ(fc_count, 1);
+}
+
+}  // namespace ir
+}  // namespace framework
+}  // namespace paddle
+
+USE_PASS(fc_fuse_pass);

paddle/fluid/framework/ir/graph.h

@@ -98,11 +98,13 @@ class Graph {
 
   // Create a normal variable with non-null VarDesc.
   ir::Node *CreateVarNode(VarDesc *var_desc) {
+    PADDLE_ENFORCE(var_desc);
     return AddNode(new ir::Node(var_desc));
   }
 
   // Create a normal runnable operator with OpDesc.
   ir::Node *CreateOpNode(OpDesc *op_desc) {
+    PADDLE_ENFORCE(op_desc);
     return AddNode(new ir::Node(op_desc));
   }
 
@@ -134,6 +136,14 @@ class Graph {
     return ret;
   }
 
+  void RemoveNode(ir::Node *node) {
+    PADDLE_ENFORCE(node_set_.find(node) != node_set_.end());
+    node_set_.erase(node);
+    nodes_.erase(node);
+  }
+
+  const ProgramDesc &program() const { return program_; }
+
  private:
   // This method takes ownership of `node`.
   ir::Node *AddNode(ir::Node *node) {
@@ -143,12 +153,6 @@ class Graph {
     return node;
   }
 
-  void RemoveNode(ir::Node *node) {
-    PADDLE_ENFORCE(node_set_.find(node) != node_set_.end());
-    node_set_.erase(node);
-    nodes_.erase(node);
-  }
-
   // NOTE: program_ shouldn't be exposed to user.
   const ProgramDesc &program_;
   std::map<std::string, boost::any> attrs_;

paddle/fluid/framework/ir/graph_pattern_detecter.cc

@@ -25,12 +25,30 @@ namespace paddle {
 namespace framework {
 namespace ir {
 
+size_t PDPattern::id_ = 0UL;
+
 PDNode* PDPattern::NewNode(PDNode::teller_t&& teller, const std::string& name) {
+  if (!name.empty()) {
+    PADDLE_ENFORCE_EQ(node_map_.count(name), 0,
+                      "PDNode's name should be unique, get duplicate [%s]",
+                      name);
+  }
+
   nodes_.emplace_back(new PDNode(std::move(teller), name));
   auto* cur = nodes_.back().get();
+  node_map_[name] = cur;
   return cur;
 }
 
+PDNode* PDPattern::RetriveNode(const std::string& id) const {
+  auto it = node_map_.find(id);
+  if (it == node_map_.end()) {
+    return nullptr;
+  }
+
+  return it->second;
+}
+
 void PDPattern::AddEdge(PDNode* a, PDNode* b) {
   PADDLE_ENFORCE(a);
   PADDLE_ENFORCE(b);
@@ -51,15 +69,18 @@ void GraphPatternDetecter::operator()(Graph* graph,
 }
 
 bool GraphPatternDetecter::MarkPDNodesInGraph(const ir::Graph& graph) {
+  VLOG(4) << "mark pdnodes in graph";
   if (graph.Nodes().empty()) return false;
 
   for (auto& node : GraphTraits::DFS(graph)) {
     for (const auto& pdnode : pattern_.nodes()) {
       if (pdnode->Tell(&node)) {
+        VLOG(4) << "pdnode " << pdnode->name() << " marked";
         pdnodes2nodes_[pdnode.get()].insert(&node);
       }
     }
   }
+  VLOG(3) << pdnodes2nodes_.size() << " nodes marked";
   return !pdnodes2nodes_.empty();
 }
 
@@ -67,10 +88,20 @@ struct HitGroup {
   std::unordered_map<PDNode*, Node*> roles;
 
   bool Match(Node* node, PDNode* pat) {
+    if (nodes_.count(node)) {
+      if (!roles.count(pat)) return false;
+      return roles[pat] == node;
+    }
     return !roles.count(pat) || roles.at(pat) == node;
   }
 
-  void Register(Node* node, PDNode* pat) { roles[pat] = node; }
+  void Register(Node* node, PDNode* pat) {
+    roles[pat] = node;
+    nodes_.insert(node);
+  }
+
+ private:
+  std::unordered_set<Node*> nodes_;
 };
 
 // Tell whether Node a links to b.
@@ -104,6 +135,7 @@ GraphPatternDetecter::DetectPatterns() {
   // Extend a PDNode to subgraphs by deducing the connection relations defined
   // in edges of PDNodes.
   for (const auto& edge : pattern_.edges()) {
+    VLOG(4) << "check " << edge.first->name() << " -> " << edge.second->name();
     // Each role has two PDNodes, which indicates two roles.
     // Detect two Nodes that can match these two roles and they are connected.
     auto& pre_groups = bi_records[step % 2];
@@ -127,6 +159,7 @@ GraphPatternDetecter::DetectPatterns() {
         }
       }
     }
+    VLOG(3) << "step " << step << " get records: " << cur_groups.size();
   }
 
   for (auto& group : bi_records[step % 2]) {

paddle/fluid/framework/ir/graph_pattern_detecter.h

@@ -96,7 +96,8 @@ class PDPattern {
 
   void AddEdge(PDNode* a, PDNode* b);
 
-  PDNode* NewNode(PDNode::teller_t&& teller, const std::string& name = "");
+  PDNode* NewNode(PDNode::teller_t&& teller, const std::string& name = NewID());
+  PDNode* RetriveNode(const std::string& id) const;
 
   const std::vector<std::unique_ptr<PDNode>>& nodes() const { return nodes_; }
   const std::vector<edge_t>& edges() const { return edges_; }
@@ -107,8 +108,12 @@ class PDPattern {
   FRIEND_TEST(PDPattern, NewNode);
 #endif
 
+  static std::string NewID() { return "pdnode-" + std::to_string(id_++); }
+
   std::vector<std::unique_ptr<PDNode>> nodes_;
   std::vector<edge_t> edges_;
+  std::unordered_map<std::string, PDNode*> node_map_;
+  static size_t id_;
 };
 
 /*

paddle/fluid/framework/ir/graph_viz_pass.cc

@@ -25,6 +25,7 @@ static const char kGraphVizPath[] = "graph_viz_path";
 std::unique_ptr<ir::Graph> GraphVizPass::ApplyImpl(
     std::unique_ptr<ir::Graph> graph) const {
   const std::string graph_viz_path = Get<std::string>(kGraphVizPath);
+  VLOG(3) << "draw IR graph viz to " << graph_viz_path;
   std::unique_ptr<std::ostream> fout(new std::ofstream(graph_viz_path));
   PADDLE_ENFORCE(fout->good());
   std::ostream& sout = *fout;

paddle/fluid/framework/ir/infer_clean_graph_pass.cc

+// 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.
+
+#include <algorithm>
+#include "paddle/fluid/framework/ir/graph.h"
+#include "paddle/fluid/framework/ir/pass.h"
+
+namespace paddle {
+namespace framework {
+namespace ir {
+
+class InferCleanGraphPass : public Pass {
+ public:
+  virtual ~InferCleanGraphPass() {}
+
+ protected:
+  std::unique_ptr<ir::Graph> ApplyImpl(std::unique_ptr<ir::Graph> graph) const {
+    PADDLE_ENFORCE(graph.get());
+
+    auto is_valid_node = [](Node* x) {
+      return x && IsControlDepVar(*x) && x->IsVar() && !x->Var();
+    };
+
+    std::unordered_set<Node*> invalid_nodes;
+    for (auto* node : graph->Nodes()) {
+      if (is_valid_node(node)) {
+        invalid_nodes.insert(node);
+      }
+    }
+
+    // remove nodes from the graph.
+    for (auto* node : invalid_nodes) {
+      graph->RemoveNode(node);
+    }
+
+    // clean edges.
+    for (auto* node : graph->Nodes()) {
+      CleanEdges(&node->inputs, invalid_nodes);
+      CleanEdges(&node->outputs, invalid_nodes);
+    }
+
+    return graph;
+  }
+
+  void CleanEdges(std::vector<Node*>* nodes,
+                  const std::unordered_set<Node*>& to_remove) const {
+    auto it = std::remove_if(nodes->begin(), nodes->end(),
+                             [&](Node* x) { return to_remove.count(x); });
+    nodes->erase(it, nodes->end());
+  }
+};
+
+}  // namespace ir
+}  // namespace framework
+}  // namespace paddle
+
+REGISTER_PASS(infer_clean_graph_pass,
+              paddle::framework::ir::InferCleanGraphPass);

paddle/fluid/framework/ir/node.h

@@ -34,14 +34,15 @@ class Node {
 
   explicit Node(VarDesc* var_desc)
       : name_(var_desc->Name()),
-        var_desc_(var_desc),
+        var_desc_(new VarDesc(*var_desc)),
         op_desc_(nullptr),
         type_(Type::kVariable) {}
 
   explicit Node(OpDesc* op_desc)
       : name_(op_desc->Type()),
         var_desc_(nullptr),
-        op_desc_(op_desc),
+        op_desc_(new OpDesc(*op_desc)),  // TODO(panyx0718) the pointer in the
+                                         // original OpDesc might go out.
         type_(Type::kOperation) {}
 
   Type NodeType() const { return type_; }
@@ -50,12 +51,12 @@ class Node {
 
   VarDesc* Var() {
     PADDLE_ENFORCE(type_ == Type::kVariable);
-    return var_desc_;
+    return var_desc_.get();
   }
 
   OpDesc* Op() {
-    PADDLE_ENFORCE(type_ == Type::kOperation);
-    return op_desc_;
+    PADDLE_ENFORCE(IsOp());
+    return op_desc_.get();
   }
 
   bool IsOp() const { return type_ == Type::kOperation; }
@@ -66,8 +67,8 @@ class Node {
 
  protected:
   const std::string name_;
-  VarDesc* var_desc_;
-  OpDesc* op_desc_;
+  std::unique_ptr<VarDesc> var_desc_;
+  std::unique_ptr<OpDesc> op_desc_;
   Type type_;
 
  private:

paddle/fluid/inference/analysis/CMakeLists.txt

+cc_library(ir_pass_manager SRCS ir_pass_manager.cc DEPS graph pass)
 cc_library(analysis SRCS pass_manager.cc dot.cc node.cc data_flow_graph.cc graph_traits.cc subgraph_splitter.cc
+  analyzer.cc
+  helper.cc
+  # passes
   fluid_to_data_flow_graph_pass.cc
   data_flow_graph_to_fluid_pass.cc
   dfg_graphviz_draw_pass.cc
   tensorrt_subgraph_pass.cc
   tensorrt_subgraph_node_mark_pass.cc
-  analyzer.cc
-  helper.cc
+  fluid_to_ir_pass.cc
   model_store_pass.cc
-  DEPS framework_proto proto_desc)
-cc_test(test_node SRCS node_tester.cc DEPS analysis gflags glog gtest)
+  DEPS framework_proto proto_desc ir_pass_manager graph pass)
+
+cc_test(test_node SRCS node_tester.cc DEPS analysis)
 cc_test(test_dot SRCS dot_tester.cc DEPS analysis)
 cc_binary(inference_analyzer SRCS analyzer_main.cc DEPS analysis)
 
@@ -27,19 +31,30 @@ function (inference_analysis_test TARGET)
         endif()
         cc_test(${TARGET}
                 SRCS "${analysis_test_SRCS}"
-                DEPS analysis
+                DEPS analysis graph fc_fuse_pass graph_viz_pass infer_clean_graph_pass graph_pattern_detecter pass
                 ARGS --inference_model_dir=${PYTHON_TESTS_DIR}/book/word2vec.inference.model ${mem_opt})
         set_tests_properties(${TARGET} PROPERTIES DEPENDS test_word2vec)
     endif(WITH_TESTING)
 endfunction(inference_analysis_test)
 
+cc_test(test_analyzer SRCS analyzer_tester.cc DEPS paddle_inference_api paddle_fluid_api ir_pass_manager analysis
+		  # ir
+		  fc_fuse_pass
+		  graph_viz_pass
+		  infer_clean_graph_pass
+		  graph_pattern_detecter
+		  pass
+        ARGS --inference_model_dir=${PYTHON_TESTS_DIR}/book/word2vec.inference.model)
+#set_tests_properties(test_analyzer PROPERTIES DEPENDS test_word2vec)
+#inference_api_test(test_analyzer SRC analyzer_tester.cc ARGS test_word2vec)
+
 inference_analysis_test(test_data_flow_graph SRCS data_flow_graph_tester.cc)
 inference_analysis_test(test_data_flow_graph_to_fluid_pass SRCS data_flow_graph_to_fluid_pass_tester.cc)
+inference_analysis_test(test_fluid_to_ir_pass SRCS fluid_to_ir_pass_tester.cc)
 inference_analysis_test(test_fluid_to_data_flow_graph_pass SRCS fluid_to_data_flow_graph_pass_tester.cc)
 inference_analysis_test(test_subgraph_splitter SRCS subgraph_splitter_tester.cc)
 inference_analysis_test(test_dfg_graphviz_draw_pass SRCS dfg_graphviz_draw_pass_tester.cc)
 inference_analysis_test(test_tensorrt_subgraph_pass SRCS tensorrt_subgraph_pass_tester.cc)
 inference_analysis_test(test_pass_manager SRCS pass_manager_tester.cc)
 inference_analysis_test(test_tensorrt_subgraph_node_mark_pass SRCS tensorrt_subgraph_node_mark_pass_tester.cc)
-inference_analysis_test(test_analyzer SRCS analyzer_tester.cc)
 inference_analysis_test(test_model_store_pass SRCS model_store_pass_tester.cc)

paddle/fluid/inference/analysis/analyzer.cc

@@ -17,6 +17,7 @@
 #include "paddle/fluid/inference/analysis/data_flow_graph_to_fluid_pass.h"
 #include "paddle/fluid/inference/analysis/dfg_graphviz_draw_pass.h"
 #include "paddle/fluid/inference/analysis/fluid_to_data_flow_graph_pass.h"
+#include "paddle/fluid/inference/analysis/fluid_to_ir_pass.h"
 #include "paddle/fluid/inference/analysis/model_store_pass.h"
 #include "paddle/fluid/inference/analysis/pass_manager.h"
 #include "paddle/fluid/inference/analysis/tensorrt_subgraph_node_mark_pass.h"
@@ -24,14 +25,15 @@
 
 namespace paddle {
 
-DEFINE_bool(inference_analysis_enable_tensorrt_subgraph_engine, true,
+DEFINE_bool(IA_enable_tensorrt_subgraph_engine, false,
             "Enable subgraph to TensorRT engine for acceleration");
 
-DEFINE_string(inference_analysis_graphviz_log_root, "./",
+DEFINE_bool(IA_enable_ir, false, "Turn on IR support");
+
+DEFINE_string(IA_graphviz_log_root, "./",
               "Graphviz debuger for data flow graphs.");
 
-DEFINE_string(inference_analysis_output_storage_path, "",
-              "optimized model output path");
+DEFINE_string(IA_output_storage_path, "", "optimized model output path");
 
 namespace inference {
 namespace analysis {
@@ -40,8 +42,34 @@ class DfgPassManagerImpl final : public DfgPassManager {
  public:
   DfgPassManagerImpl() {
     // TODO(Superjomn) set the key with pass reprs.
+    LOG(INFO)
+        << "-----------------------------------------------------------------";
+    if (FLAGS_IA_enable_ir) {
+      AddPass("fluid-to-ir-pass", new FluidToIrPass);
+    } else {
       AddPass("fluid-to-data-flow-graph", new FluidToDataFlowGraphPass);
-    if (FLAGS_inference_analysis_enable_tensorrt_subgraph_engine) {
+    }
+    TryAddTensorRtPass();
+    AddPass("data-flow-graph-to-fluid", new DataFlowGraphToFluidPass);
+    if (!FLAGS_IA_output_storage_path.empty()) {
+      AddPass("model-store-pass", new ModelStorePass);
+    }
+    LOG(INFO)
+        << "-----------------------------------------------------------------";
+  }
+
+  std::string repr() const override { return "dfg-pass-manager"; }
+  std::string description() const override { return "DFG pass manager."; }
+
+ private:
+  void AddPass(const std::string& name, Pass* pass) {
+    VLOG(3) << "Adding pass " << name;
+    Register(name, pass);
+    AddGraphvizDebugerPass(pass);
+  }
+
+  void TryAddTensorRtPass() {
+    if (FLAGS_IA_enable_tensorrt_subgraph_engine) {
       auto trt_teller = [&](const Node* node) {
         std::unordered_set<std::string> teller_set(
             {"elementwise_add", "mul", "conv2d", "pool2d", "relu", "softmax"});
@@ -59,20 +87,6 @@ class DfgPassManagerImpl final : public DfgPassManager {
               new TensorRTSubgraphNodeMarkPass(trt_teller));
       AddPass("tensorrt-subgraph", new TensorRTSubGraphPass(trt_teller));
     }
-    AddPass("data-flow-graph-to-fluid", new DataFlowGraphToFluidPass);
-    if (!FLAGS_inference_analysis_output_storage_path.empty()) {
-      AddPass("model-store-pass", new ModelStorePass);
-    }
-  }
-
-  std::string repr() const override { return "dfg-pass-manager"; }
-  std::string description() const override { return "DFG pass manager."; }
-
- private:
-  void AddPass(const std::string& name, Pass* pass) {
-    LOG(INFO) << "Adding pass " << name;
-    Register(name, pass);
-    AddGraphvizDebugerPass(pass);
   }
 
   // Add the graphviz debuger pass if the parent pass has one.

paddle/fluid/inference/analysis/analyzer.h

@@ -43,9 +43,10 @@ namespace paddle {
 
 // TODO(Superjomn) add a definition flag like PADDLE_WITH_TENSORRT and hide this
 // flag if not available.
-DECLARE_bool(inference_analysis_enable_tensorrt_subgraph_engine);
-DECLARE_string(inference_analysis_graphviz_log_root);
-DECLARE_string(inference_analysis_output_storage_path);
+DECLARE_bool(IA_enable_tensorrt_subgraph_engine);
+DECLARE_string(IA_graphviz_log_root);
+DECLARE_string(IA_output_storage_path);
+DECLARE_bool(IA_enable_ir);
 
 namespace inference {
 namespace analysis {

paddle/fluid/inference/analysis/analyzer_tester.cc

@@ -14,14 +14,16 @@
 
 #include "paddle/fluid/inference/analysis/analyzer.h"
 #include <google/protobuf/text_format.h>
+#include "paddle/fluid/framework/ir/pass.h"
 #include "paddle/fluid/inference/analysis/ut_helper.h"
+#include "paddle/fluid/inference/api/paddle_inference_api.h"
 
 namespace paddle {
 namespace inference {
 namespace analysis {
 
 TEST(Analyzer, analysis_without_tensorrt) {
-  FLAGS_inference_analysis_enable_tensorrt_subgraph_engine = false;
+  FLAGS_IA_enable_tensorrt_subgraph_engine = false;
   Argument argument;
   argument.fluid_model_dir.reset(new std::string(FLAGS_inference_model_dir));
   Analyzer analyser;
@@ -29,13 +31,73 @@ TEST(Analyzer, analysis_without_tensorrt) {
 }
 
 TEST(Analyzer, analysis_with_tensorrt) {
-  FLAGS_inference_analysis_enable_tensorrt_subgraph_engine = true;
+  FLAGS_IA_enable_tensorrt_subgraph_engine = true;
   Argument argument;
   argument.fluid_model_dir.reset(new std::string(FLAGS_inference_model_dir));
   Analyzer analyser;
   analyser.Run(&argument);
 }
 
+void TestWord2vecPrediction(const std::string& model_path) {
+  NativeConfig config;
+  config.model_dir = model_path;
+  config.use_gpu = false;
+  config.device = 0;
+  auto predictor =
+      ::paddle::CreatePaddlePredictor<NativeConfig, PaddleEngineKind::kNative>(
+          config);
+
+  // One single batch
+
+  int64_t data[4] = {1, 2, 3, 4};
+  PaddleTensor tensor;
+  tensor.shape = std::vector<int>({4, 1});
+  tensor.data = PaddleBuf(data, sizeof(data));
+  tensor.dtype = PaddleDType::INT64;
+
+  // For simplicity, we set all the slots with the same data.
+  std::vector<PaddleTensor> slots(4, tensor);
+  std::vector<PaddleTensor> outputs;
+  CHECK(predictor->Run(slots, &outputs));
+
+  PADDLE_ENFORCE(outputs.size(), 1UL);
+  // Check the output buffer size and result of each tid.
+  PADDLE_ENFORCE(outputs.front().data.length(), 33168UL);
+  float result[5] = {0.00129761, 0.00151112, 0.000423564, 0.00108815,
+                     0.000932706};
+  const size_t num_elements = outputs.front().data.length() / sizeof(float);
+  // The outputs' buffers are in CPU memory.
+  for (size_t i = 0; i < std::min(5UL, num_elements); i++) {
+    LOG(INFO) << "data: "
+              << static_cast<float*>(outputs.front().data.data())[i];
+    PADDLE_ENFORCE(static_cast<float*>(outputs.front().data.data())[i],
+                   result[i]);
+  }
+}
+
+// Turn on the IR pass supportion, run a real inference and check the result.
+TEST(Analyzer, SupportIRPass) {
+  FLAGS_IA_enable_ir = true;
+  FLAGS_IA_enable_tensorrt_subgraph_engine = false;
+  FLAGS_IA_output_storage_path = "./analysis.out";
+
+  Argument argument(FLAGS_inference_model_dir);
+  argument.model_output_store_path.reset(new std::string("./analysis.out"));
+
+  Analyzer analyzer;
+  analyzer.Run(&argument);
+
+  // Should get the transformed model stored to ./analysis.out
+  ASSERT_TRUE(PathExists("./analysis.out"));
+
+  // Inference from this path.
+  TestWord2vecPrediction("./analysis.out");
+}
+
 }  // namespace analysis
 }  // namespace inference
 }  // namespace paddle
+
+USE_PASS(fc_fuse_pass);
+USE_PASS(graph_viz_pass);
+USE_PASS(infer_clean_graph_pass);

paddle/fluid/inference/analysis/data_flow_graph.cc

@@ -19,14 +19,16 @@ limitations under the License. */
 namespace paddle {
 namespace inference {
 namespace analysis {
+using ir_node_t = framework::ir::Node;
+using ir_graph_t = framework::ir::Graph;
 
 // It is a better idea that the inputs and outputs of this graph is set manually
 // before, but there must be a Pass that helps to prune the unnecessary ops that
 // do not contribute to the given targets, so in this pass, analysis and get the
 // inputs and outputs is OK.
 void DataFlowGraph::Build() {
-  inputs.clear();
-  outputs.clear();
+  inputs_.clear();
+  outputs_.clear();
   std::unordered_set<Node *> ins;
   std::unordered_set<Node *> outs;
   for (auto &node : nodes.nodes()) {
@@ -42,18 +44,140 @@ void DataFlowGraph::Build() {
   // similarly, the nodes that in outs but not in ins is the graphs' outputs
   for (auto *in : ins) {
     if (!outs.count(in)) {
-      inputs.push_back(in);
+      inputs_.push_back(in);
     }
   }
   for (auto *out : outs) {
-    if (!outs.count(out)) {
-      outputs.push_back(out);
+    if (!ins.count(out)) {
+      outputs_.push_back(out);
     }
   }
 
   Clean();
 }
 
+void DataFlowGraph::Build(const framework::proto::ProgramDesc &prog) {
+  // insert vars
+  // The `var2id` keeps a map from a variable's name to its Node-id, the Node-id
+  // will keep updating to its latest alias during the graph-building.
+  std::unordered_map<std::string, size_t> var2id;
+  auto &main_block = prog.blocks(framework::kRootBlockIndex);
+  for (int i = 0; i < main_block.vars_size(); i++) {
+    const auto &var = main_block.vars(i);
+    auto *v = nodes.Create(Node::Type::kValue);
+    v->SetName(var.name());
+    v->SetPbDesc(const_cast<void *>(static_cast<const void *>(&var)));
+    v->SetPbMsg(var.SerializeAsString());
+    var2id[var.name()] = v->id();
+  }
+
+  // The variables in a SSA can only write once, so if a variable is written
+  // multiple times(quite common in our ProgramDesc design), multiple alias
+  // Nodes of this variable will be created, and each will just write once.
+
+  // An set that keep all the names of the variables(the original, not alias)
+  // that have been written(as outputs). Once an Op's output variable hit the
+  // set, it should create a new alias and update the global alias for this
+  // variable. And that make a Data Flow Graph a SSA.
+  std::unordered_set<Node *> unique_written_vars;
+  for (int i = 0; i < main_block.ops_size(); i++) {
+    const auto &op = main_block.ops(i);
+    auto *o = nodes.Create(Node::Type::kFunction);
+    o->SetName(op.type());
+    static_cast<Function *>(o)->SetFuncType(op.type());
+    // Link to the original protobuf message's memory, make it easier to
+    // generate from a data flow graph to fluid ProgramDesc.
+    o->SetPbDesc(const_cast<void *>(static_cast<const void *>(&op)));
+    o->SetPbMsg(op.SerializeAsString());
+
+    // set inputs and outputs
+    for (int j = 0; j < op.inputs_size(); j++) {
+      auto &in_var = op.inputs(j);
+      for (int k = 0; k < in_var.arguments_size(); k++) {
+        auto *in = nodes.GetMutable(var2id.at(in_var.arguments(k)));
+        in->outlinks.push_back(o);
+        o->inlinks.push_back(in);
+      }
+    }
+    for (int j = 0; j < op.outputs_size(); j++) {
+      auto &out_var = op.outputs(j);
+      for (int k = 0; k < out_var.arguments_size(); k++) {
+        auto *out = nodes.GetMutable(var2id[out_var.arguments(k)]);
+        if (unique_written_vars.count(out)) {
+          // Loop found, for example, a = op(a), use SSA, change to a1 = op(a).
+          auto *out_alias = nodes.Create(Node::Type::kValue);
+          out_alias->SetName(out->name());
+          out_alias->SetPbDesc(out->pb_desc());
+          out_alias->SetPbMsg(out->pb_msg());
+          var2id[out_alias->name()] =
+              out_alias->id();  // update variable's alias Node
+          LOG(INFO) << "loop found in graph, create SSA alias node ["
+                    << out_alias->repr() << "] for [" << out->repr() << "]";
+          out = out_alias;
+        }
+        out->inlinks.push_back(o);
+        o->outlinks.push_back(out);
+        unique_written_vars.insert(out);
+      }
+    }
+  }
+  // Analysis and extract the inputs and outputs of this graph.
+  Build();
+}
+
+void DataFlowGraph::Build(const framework::ir::Graph &graph) {
+  // Create nodes
+  std::unordered_map<ir_node_t *, Node *> ir_node_map;
+  for (auto *ir_node : graph.Nodes()) {
+    Node *x{nullptr};
+    if (ir_node->IsOp()) {
+      PADDLE_ENFORCE(ir_node->Op());
+      VLOG(4) << "get op " << ir_node << " " << ir_node->Name();
+      x = nodes.Create(Node::Type::kFunction);
+      x->attr("ir_node").Pointer() = ir_node;
+      PADDLE_ENFORCE(ir_node->Op()->Proto());
+      x->SetName(ir_node->Op()->Proto()->type());
+      x->SetPbMsg(ir_node->Op()->Proto()->SerializeAsString());
+    } else if (ir_node->IsVar()) {
+      // Not create a Node for IR ControlDepVar, considering Inference currently
+      // just used in single thread scenerio.
+      VLOG(4) << "get var " << ir_node->Name();
+      x = nodes.Create(Node::Type::kValue);
+      x->attr("ir_node").Pointer() = ir_node;
+      x->SetName(ir_node->Name());
+      // x->SetPbMsg(ir_node->Var()->Proto()->SerializeAsString());
+    } else {
+      PADDLE_THROW("Failed to create an Node from IR, unknown type");
+    }
+    ir_node_map.emplace(ir_node, x);
+  }
+  VLOG(4) << "finish creating Nodes";
+
+  VLOG(4) << "to create edge";
+  // Create links
+  for (auto *ir_node : graph.Nodes()) {
+    auto it = ir_node_map.find(ir_node);
+    // Skip ControlDepVar.
+    if (it == ir_node_map.end()) continue;
+    auto *node = it->second;
+    for (auto *x : ir_node->inputs) {
+      if (!ir_node_map.count(x)) continue;
+      node->inlinks.push_back(ir_node_map.at(x));
+    }
+    for (auto *x : ir_node->outputs) {
+      if (!ir_node_map.count(x)) continue;
+      node->outlinks.push_back(ir_node_map.at(x));
+    }
+  }
+
+  Build();
+  PADDLE_ENFORCE(!inputs_.empty(),
+                 "Can't deduce any inputs from the graph, Is the graph empty?");
+
+  ir_graph = &graph;
+  VLOG(3) << "finished build from IR";
+}
+
 void DataFlowGraph::Clean() {
   for (auto &node : nodes.nodes()) {
     std::unordered_set<Node *> inlinks_set(node->inlinks.begin(),
@@ -61,11 +185,9 @@ void DataFlowGraph::Clean() {
     std::unordered_set<Node *> outlinks_set(node->outlinks.begin(),
                                             node->outlinks.end());
     if (inlinks_set.size() < node->inlinks.size()) {
-      LOG(INFO) << "Clean: node " << node->repr() << " prune duplicate inputs";
       node->inlinks.assign(inlinks_set.begin(), inlinks_set.end());
     }
     if (outlinks_set.size() < node->outlinks.size()) {
-      LOG(INFO) << "Clean: node " << node->repr() << " prune duplicate inputs";
       node->outlinks.assign(outlinks_set.begin(), outlinks_set.end());
     }
   }
@@ -112,10 +234,10 @@ GraphTraits<DataFlowGraph>::NodesBFSIterator::NodesBFSIterator(
     const std::vector<Node *> &source)
     : queue_(source.begin(), source.end()) {}
 
-// GraphTraits<DataFlowGraph>::NodesBFSIterator::NodesBFSIterator(
-//     GraphTraits<DataFlowGraph>::NodesBFSIterator &&other) noexcept
-//     : queue_(std::move(other.queue_)),
-//       visited_(std::move(other.visited_)) {}
+GraphTraits<DataFlowGraph>::NodesBFSIterator::NodesBFSIterator(
+    GraphTraits<DataFlowGraph>::NodesBFSIterator &&other) noexcept
+    : queue_(std::move(other.queue_)),
+      visited_(std::move(other.visited_)) {}
 
 GraphTraits<DataFlowGraph>::NodesBFSIterator::NodesBFSIterator(
     const GraphTraits<DataFlowGraph>::NodesBFSIterator &other)
@@ -159,7 +281,7 @@ bool GraphTraits<DataFlowGraph>::NodesBFSIterator::operator==(
   if (queue_.empty()) return other.queue_.empty();
   if ((!queue_.empty()) && (!other.queue_.empty())) {
     return queue_.front() == other.queue_.front() &&
-           visited_.size() == other.visited_.size();  // here need to check the
+           visited_.size() == other.visited_.size();
     // equality of queue and
     // visited. Just a light but week implementation.
   }
@@ -174,10 +296,10 @@ GraphTraits<DataFlowGraph>::NodesDFSIterator::NodesDFSIterator(
   for (auto *x : source) stack_.push(x);
 }
 
-// GraphTraits<DataFlowGraph>::NodesDFSIterator::NodesDFSIterator(
-//     GraphTraits<DataFlowGraph>::NodesDFSIterator &&other) noexcept
-//     : stack_(std::move(other.stack_)),
-//       visited_(std::move(other.visited_)) {}
+GraphTraits<DataFlowGraph>::NodesDFSIterator::NodesDFSIterator(
+    GraphTraits<DataFlowGraph>::NodesDFSIterator &&other) noexcept
+    : stack_(std::move(other.stack_)),
+      visited_(std::move(other.visited_)) {}
 
 GraphTraits<DataFlowGraph>::NodesDFSIterator::NodesDFSIterator(
     const GraphTraits<DataFlowGraph>::NodesDFSIterator &other)
@@ -339,7 +461,7 @@ ExtractInputAndOutputOfSubGraph(std::vector<Node *> &graph) {  // NOLINT
 
 void FilterRedundantOutputOfSubGraph(DataFlowGraph *graph) {
   std::vector<Node *> op_nodes;
-  for (auto &node : GraphTraits<DataFlowGraph>(graph).nodes_in_TS()) {
+  for (auto &node : GraphTraits<DataFlowGraph>(*graph).nodes_in_TS()) {
     if (node.type() == Node::Type::kValue || node.deleted()) {
       continue;
     }

paddle/fluid/inference/analysis/data_flow_graph.h

@@ -26,6 +26,7 @@ limitations under the License. */
 #include <utility>
 #include <vector>
 
+#include "paddle/fluid/framework/ir/graph.h"
 #include "paddle/fluid/inference/analysis/graph_traits.h"
 #include "paddle/fluid/inference/analysis/node.h"
 #include "paddle/fluid/platform/enforce.h"
@@ -41,19 +42,43 @@ namespace analysis {
  */
 struct DataFlowGraph {
   NodeMap nodes;
-  std::vector<Node *> inputs;
-  std::vector<Node *> outputs;
+  // inputs and outputs are deduced from the graph.
+  // Used to interact with IR.
+  const framework::ir::Graph *ir_graph{nullptr};
 
   // Extract inputs and outputs of the graph.
   void Build();
 
+  void Build(const framework::proto::ProgramDesc &prog);
+
+  // Build a graph from ir::Graph.
+  void Build(const framework::ir::Graph &graph);
+
+  // Get an attribute.
+  AnyAttr &Attr(const std::string &key) { return attrs_[key]; }
+
   // Output a DOT graph file for debug.
   std::string DotString() const;
 
   std::string HumanReadableInfo(bool show_values = true,
                                 bool show_functions = true) const;
 
+  const std::vector<Node *> &inputs() const {
+    PADDLE_ENFORCE(!inputs_.empty(),
+                   "No inputs are deduced, need to Build() first.");
+    return inputs_;
+  }
+  const std::vector<Node *> &outputs() const {
+    PADDLE_ENFORCE(!outputs_.empty(),
+                   "No outputs are deduced, need to Build() first.");
+    return outputs_;
+  }
+
  private:
+  mutable std::vector<Node *> inputs_;
+  mutable std::vector<Node *> outputs_;
+  std::unordered_map<std::string, AnyAttr> attrs_;
+
   // Remove duplicate edges and so on.
   void Clean();
 };
@@ -70,7 +95,7 @@ struct GraphTraits<DataFlowGraph> {
       : public std::iterator<std::forward_iterator_tag, Node *> {
     NodesBFSIterator() = default;
     explicit NodesBFSIterator(const std::vector<Node *> &source);
-    // NodesBFSIterator(NodesBFSIterator &&other) noexcept;
+    NodesBFSIterator(NodesBFSIterator &&other) noexcept;
     // NOTE Heavy to use.
     NodesBFSIterator(const NodesBFSIterator &other);
 
@@ -93,8 +118,8 @@ struct GraphTraits<DataFlowGraph> {
   struct NodesDFSIterator
       : public std::iterator<std::forward_iterator_tag, Node *> {
     NodesDFSIterator() = default;
-    explicit NodesDFSIterator(const std::vector<Node *> &source);
-    // NodesDFSIterator(NodesDFSIterator &&other) noexcept;
+    NodesDFSIterator(const std::vector<Node *> &source);
+    NodesDFSIterator(NodesDFSIterator &&other) noexcept;
     NodesDFSIterator(const NodesDFSIterator &other);
 
     Node &operator*();
@@ -116,7 +141,7 @@ struct GraphTraits<DataFlowGraph> {
   struct NodesTSIterator
       : public std::iterator<std::forward_iterator_tag, Node *> {
     NodesTSIterator() = default;
-    explicit NodesTSIterator(const std::vector<Node *> &source);
+    NodesTSIterator(const std::vector<Node *> &source);
     NodesTSIterator(NodesTSIterator &&other)
         : sorted_(std::move(other.sorted_)), cursor_(other.cursor_) {
       other.cursor_ = 0;
@@ -138,7 +163,7 @@ struct GraphTraits<DataFlowGraph> {
     size_t cursor_{0};
   };
 
-  explicit GraphTraits(DataFlowGraph *graph) : graph_(graph) {}
+  explicit GraphTraits(const DataFlowGraph &graph) : graph_(graph) {}
 
   // default use BFS to visit the nodes.
   iterator_range<NodesBFSIterator> nodes() {
@@ -156,20 +181,20 @@ struct GraphTraits<DataFlowGraph> {
 
  private:
   NodesBFSIterator nodes_bfs_begin() {
-    return NodesBFSIterator(graph_->inputs);
+    return NodesBFSIterator(graph_.inputs());
   }
   NodesBFSIterator nodes_bfs_end() { return NodesBFSIterator(); }
 
   NodesDFSIterator nodes_dfs_begin() {
-    return NodesDFSIterator(graph_->inputs);
+    return NodesDFSIterator(graph_.inputs());
   }
   NodesDFSIterator nodes_dfs_end() { return NodesDFSIterator(); }
 
-  NodesTSIterator nodes_ts_begin() { return NodesTSIterator(graph_->inputs); }
+  NodesTSIterator nodes_ts_begin() { return NodesTSIterator(graph_.inputs()); }
   NodesTSIterator nodes_ts_end() { return NodesTSIterator(); }
 
  private:
-  DataFlowGraph *graph_;
+  const DataFlowGraph &graph_;
 };
 
 // Extract the inputs and outputs of a graph. The inputs and outputs of a

paddle/fluid/inference/analysis/data_flow_graph_tester.cc

@@ -13,6 +13,7 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include "paddle/fluid/inference/analysis/data_flow_graph.h"
+#include "paddle/fluid/framework/program_desc.h"
 #include "paddle/fluid/inference/analysis/ut_helper.h"
 
 namespace paddle {
@@ -24,20 +25,18 @@ TEST(DataFlowGraph, BFS) {
   auto dfg = ProgramDescToDFG(desc);
   dfg.Build();
 
-  for (auto *in : dfg.inputs) {
+  for (auto* in : dfg.inputs()) {
     LOG(INFO) << "inputs: " << in->name() << " "
               << static_cast<int>(in->type());
   }
-  for (auto *out : dfg.outputs) {
+  for (auto* out : dfg.outputs()) {
     LOG(INFO) << "outputs: " << out->name() << " "
               << static_cast<int>(out->type());
   }
 
-  GraphTraits<DataFlowGraph> trait(&dfg);
-  auto nodes = trait.nodes();
   size_t count = 0;
-  for (auto it = nodes.begin(); it != nodes.end(); ++it) {
-    LOG(INFO) << "visiting " << it->name();
+  for (auto& node : GraphTraits<DataFlowGraph>(dfg).nodes()) {
+    LOG(INFO) << "visiting " << node.name();
     ++count;
   }
   ASSERT_EQ(count, dfg.nodes.size());
@@ -45,13 +44,11 @@ TEST(DataFlowGraph, BFS) {
 
 TEST(DataFlowGraph, DFS) {
   auto desc = LoadProgramDesc(FLAGS_inference_model_dir + "/__model__");
-  auto dfg = ProgramDescToDFG(desc);
-  dfg.Build();
-  GraphTraits<DataFlowGraph> trait(&dfg);
-  auto nodes = trait.nodes_in_DFS();
+  DataFlowGraph dfg;
+  dfg.Build(desc);
   size_t count = 0;
-  for (auto it = nodes.begin(); it != nodes.end(); ++it) {
-    LOG(INFO) << "visiting " << it->name();
+  for (auto& node : GraphTraits<DataFlowGraph>(dfg).nodes_in_DFS()) {
+    LOG(INFO) << "visiting " << node.name();
     ++count;
   }
   ASSERT_EQ(count, dfg.nodes.size());
@@ -74,21 +71,17 @@ TEST(DataFlowGraph, TS) {
   DataFlowGraph graph;
 
   for (int i = 0; i < 8; i++) {
-    auto *node = graph.nodes.Create(Node::Type::kValue);
+    auto* node = graph.nodes.Create(Node::Type::kValue);
     node->SetName("node-" + std::to_string(i));
   }
 
   auto add_link = [&](int i, int j) {
-    Node *source = graph.nodes.GetMutable(i);
-    Node *target = graph.nodes.GetMutable(j);
+    Node* source = graph.nodes.GetMutable(i);
+    Node* target = graph.nodes.GetMutable(j);
     target->inlinks.push_back(source);
     source->outlinks.push_back(target);
   };
 
-  graph.inputs.push_back(graph.nodes.GetMutable(0));
-  graph.inputs.push_back(graph.nodes.GetMutable(1));
-  graph.inputs.push_back(graph.nodes.GetMutable(2));
-
   add_link(0, 4);
   add_link(0, 5);
   add_link(1, 6);
@@ -97,8 +90,9 @@ TEST(DataFlowGraph, TS) {
   add_link(4, 7);
   add_link(4, 3);
   add_link(7, 3);
+  graph.Build();
 
-  auto its = GraphTraits<DataFlowGraph>(&graph).nodes_in_TS();
+  auto its = GraphTraits<DataFlowGraph>(graph).nodes_in_TS();
   std::vector<int> sorted_ids;
   for (auto it = its.begin(); it != its.end(); ++it) {
     LOG(INFO) << it->name();
@@ -122,6 +116,50 @@ TEST(DataFlowGraph, TS) {
   assert_positive_sequence_pair(4, 7);
 }
 
+TEST(DataFlowGraph, Build_ProgramDesc) {
+  auto desc = LoadProgramDesc(FLAGS_inference_model_dir + "/__model__");
+  DataFlowGraph graph;
+  graph.Build(desc);
+  ASSERT_EQ(graph.nodes.size(), 38UL);
+}
+
+void SetOp(framework::ProgramDesc* prog, const std::string& type,
+           const std::vector<std::string>& inputs,
+           const std::vector<std::string>& outputs) {
+  auto* op = prog->MutableBlock(0)->AppendOp();
+  op->SetType(type);
+  op->SetInput("Xs", inputs);
+  op->SetOutput("Xs", outputs);
+}
+
+TEST(DataFlowGraph, Build_IR_Graph) {
+  framework::ProgramDesc prog;
+  for (auto& v : std::vector<std::string>({"a", "b", "c", "d", "e", "f"})) {
+    auto* var = prog.MutableBlock(0)->Var(v);
+    var->SetType(framework::proto::VarType::SELECTED_ROWS);
+    if (v == "c") {
+      var->SetPersistable(true);
+    }
+  }
+
+  SetOp(&prog, "OP0", std::vector<std::string>({"a"}),
+        std::vector<std::string>({"b"}));
+  SetOp(&prog, "OP1", std::vector<std::string>({"a"}),
+        std::vector<std::string>({"c"}));
+  SetOp(&prog, "mul", std::vector<std::string>({"b", "c"}),
+        std::vector<std::string>({"d"}));
+  SetOp(&prog, "elementwise_add", std::vector<std::string>({"d", "e"}),
+        std::vector<std::string>({"f"}));
+
+  DataFlowGraph graph;
+
+  framework::ir::Graph ir_graph(prog);
+
+  graph.Build(ir_graph);
+
+  ASSERT_EQ(graph.nodes.size(), ir_graph.Nodes().size());
+}
+
 }  // namespace analysis
 }  // namespace inference
 }  // namespace paddle

paddle/fluid/inference/analysis/data_flow_graph_to_fluid_pass.cc

@@ -52,18 +52,15 @@ bool DataFlowGraphToFluidPass::Initialize(Argument *argument) {
 bool DataFlowGraphToFluidPass::Finalize() { return true; }
 
 void DataFlowGraphToFluidPass::Run(DataFlowGraph *graph) {
-  LOG(INFO) << "graph.inputs " << graph->inputs.size();
-  for (auto &node : GraphTraits<DataFlowGraph>(graph).nodes_in_TS()) {
+  // FilterRedundantOutputOfSubGraph(graph);
+  for (auto &node : GraphTraits<DataFlowGraph>(*graph).nodes_in_TS()) {
     if (node.deleted()) continue;
 
     switch (node.type()) {
       case Node::Type::kFunction: {
-        LOG(INFO) << "add function " << node.repr();
         AddFluidOp(&node);
       } break;
       case Node::Type::kFunctionBlock: {
-        LOG(INFO) << "add engine op " << node.repr() << " , "
-                  << static_cast<FunctionBlock *>(&node)->subgraph.size();
         AddEngineOp(&node);
       } break;
       default:
@@ -75,15 +72,27 @@ void DataFlowGraphToFluidPass::Run(DataFlowGraph *graph) {
 }
 
 void DataFlowGraphToFluidPass::AddFluidOp(Node *node) {
-  auto *ori_op = static_cast<framework::proto::OpDesc *>(node->pb_desc());
+  PADDLE_ENFORCE(node);
+  PADDLE_ENFORCE(node->IsFunction());
+  PADDLE_ENFORCE(node->pb_desc() || !node->pb_msg().empty(),
+                 "node has invalid protobuf repr.");
+
   // currently only the main block is analyzed.
+  PADDLE_ENFORCE(desc_);
   auto *main_block = desc_->mutable_blocks(framework::kRootBlockIndex);
   auto *op = main_block->add_ops();
-  *op = *ori_op;  // copy the attributes, by default, these will not be changed
+
+  if (node->pb_desc()) {
+    auto *ori_op = static_cast<framework::proto::OpDesc *>(node->pb_desc());
+    *op =
+        *ori_op;  // copy the attributes, by default, these will not be changed
     // by analysis phrase.
     // The inputs and outputs of the existing ops are not changed by tensorrt
     // subgraph pass.
     // NOTE It might be changed by other passes in the long run.
+  } else {
+    op->ParseFromString(node->pb_msg());
+  }
 }
 
 void CreateTrtEngineOp(Node *node, const DataFlowGraph &graph,
@@ -220,10 +229,9 @@ void DataFlowGraphToFluidPass::AddEngineOp(Node *node) {
   framework::BlockDesc block_desc(nullptr, &proto);
   block_desc.Proto()->set_parent_idx(-1);
   block_desc.Proto()->set_idx(0);
-  LOG(INFO) << "origin variable size: "
+  VLOG(4) << "origin variable size: "
           << argument_->origin_program_desc->blocks(0).vars().size();
-  LOG(INFO) << "transformed variable size: "
-            << block_desc.Proto()->vars().size();
+  VLOG(4) << "transformed variable size: " << block_desc.Proto()->vars().size();
   // copy ops.
 
   for (auto *node : block_node->subgraph) {
@@ -257,7 +265,7 @@ class DFG_DebuggerPass : public DFG_GraphvizDrawPass {
 
 Pass *DataFlowGraphToFluidPass::CreateGraphvizDebugerPass() const {
   return new DFG_DebuggerPass(DFG_GraphvizDrawPass::Config(
-      FLAGS_inference_analysis_graphviz_log_root,
+      FLAGS_IA_graphviz_log_root,
       "data_flow_graph_to_fluid_graphviz_debugger"));
 }
 

paddle/fluid/inference/analysis/dfg_graphviz_draw_pass.cc

@@ -29,7 +29,7 @@ void DFG_GraphvizDrawPass::Run(DataFlowGraph *graph) {
 
   auto png_path = dot_path.substr(0, dot_path.size() - 4) + ".png";
   std::string message;
-  LOG(INFO) << "draw to " << png_path;
+  VLOG(3) << "draw to " << png_path;
   ExecShellCommand("dot -Tpng " + dot_path + " -o " + png_path, &message);
 }
 

paddle/fluid/inference/analysis/fluid_to_data_flow_graph_pass.cc

@@ -52,72 +52,7 @@ bool FluidToDataFlowGraphPass::Finalize() { return true; }
 void FluidToDataFlowGraphPass::Run(DataFlowGraph *graph) {
   PADDLE_ENFORCE(graph);
   PADDLE_ENFORCE(desc_);
-  // insert vars
-  // The `var2id` keeps a map from a variable's name to its Node-id, the Node-id
-  // will keep updating to its latest alias during the graph-building.
-  std::unordered_map<std::string, size_t> var2id;
-  auto &main_block = desc_->blocks(framework::kRootBlockIndex);
-  for (int i = 0; i < main_block.vars_size(); i++) {
-    const auto &var = main_block.vars(i);
-    auto *v = graph->nodes.Create(Node::Type::kValue);
-    v->SetName(var.name());
-    v->SetPbDesc(const_cast<void *>(static_cast<const void *>(&var)));
-    v->SetPbMsg(var.SerializeAsString());
-    var2id[var.name()] = v->id();
-  }
-
-  // The variables in a SSA can only write once, so if a variable is written
-  // multiple times(quite common in our ProgramDesc design), multiple alias
-  // Nodes of this variable will be created, and each will just write once.
-
-  // An set that keep all the names of the variables(the original, not alias)
-  // that have been written(as outputs). Once an Op's output variable hit the
-  // set, it should create a new alias and update the global alias for this
-  // variable. And that make a Data Flow Graph a SSA.
-  std::unordered_set<Node *> unique_written_vars;
-  for (int i = 0; i < main_block.ops_size(); i++) {
-    const auto &op = main_block.ops(i);
-    auto *o = graph->nodes.Create(Node::Type::kFunction);
-    o->SetName(op.type());
-    static_cast<Function *>(o)->SetFuncType(op.type());
-    // Link to the original protobuf message's memory, make it easier to
-    // generate from a data flow graph to fluid ProgramDesc.
-    o->SetPbDesc(const_cast<void *>(static_cast<const void *>(&op)));
-    o->SetPbMsg(op.SerializeAsString());
-
-    // set inputs and outputs
-    for (int j = 0; j < op.inputs_size(); j++) {
-      auto &in_var = op.inputs(j);
-      for (int k = 0; k < in_var.arguments_size(); k++) {
-        auto *in = graph->nodes.GetMutable(var2id.at(in_var.arguments(k)));
-        in->outlinks.push_back(o);
-        o->inlinks.push_back(in);
-      }
-    }
-    for (int j = 0; j < op.outputs_size(); j++) {
-      auto &out_var = op.outputs(j);
-      for (int k = 0; k < out_var.arguments_size(); k++) {
-        auto *out = graph->nodes.GetMutable(var2id[out_var.arguments(k)]);
-        if (unique_written_vars.count(out)) {
-          // Loop found, for example, a = op(a), use SSA, change to a1 = op(a).
-          auto *out_alias = graph->nodes.Create(Node::Type::kValue);
-          out_alias->SetName(out->name());
-          out_alias->SetPbDesc(out->pb_desc());
-          out_alias->SetPbMsg(out->pb_msg());
-          var2id[out_alias->name()] =
-              out_alias->id();  // update variable's alias Node
-          LOG(INFO) << "loop found in graph, create SSA alias node ["
-                    << out_alias->repr() << "] for [" << out->repr() << "]";
-          out = out_alias;
-        }
-        out->inlinks.push_back(o);
-        o->outlinks.push_back(out);
-        unique_written_vars.insert(out);
-      }
-    }
-  }
-  // Analysis and extract the inputs and outputs of this graph.
-  graph->Build();
+  graph->Build(*desc_);
 }
 
 namespace {
@@ -133,7 +68,7 @@ class DFG_DebuggerPass : public DFG_GraphvizDrawPass {
 
 Pass *FluidToDataFlowGraphPass::CreateGraphvizDebugerPass() const {
   return new DFG_DebuggerPass(DFG_GraphvizDrawPass::Config(
-      FLAGS_inference_analysis_graphviz_log_root, "fluid-to-dfg-debuger"));
+      FLAGS_IA_graphviz_log_root, "fluid-to-dfg-debuger"));
 }
 
 }  // namespace analysis

paddle/fluid/inference/analysis/fluid_to_data_flow_graph_pass_tester.cc

@@ -30,7 +30,7 @@ TEST(FluidToDataFlowGraphPass, Test) {
   ASSERT_EQ(argument.main_dfg->nodes.size(), 38UL);
   pass.Finalize();
   ASSERT_FALSE(argument.main_dfg->DotString().empty());
-  EXPECT_FALSE(argument.main_dfg->inputs.empty());
+  EXPECT_FALSE(argument.main_dfg->inputs().empty());
 }
 
 }  // namespace analysis

paddle/fluid/inference/analysis/fluid_to_ir_pass.cc

+// 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.
+
+#include "paddle/fluid/inference/analysis/fluid_to_ir_pass.h"

paddle/fluid/inference/analysis/fluid_to_ir_pass.h

+// 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.
+
+#pragma once
+
+#include "paddle/fluid/inference/analysis/ir_pass_manager.h"
+#include "paddle/fluid/inference/analysis/pass.h"
+
+namespace paddle {
+namespace inference {
+namespace analysis {
+
+class FluidToIrPass final : public DataFlowGraphPass {
+ public:
+  FluidToIrPass() = default;
+
+  bool Initialize(Argument *argument) override {
+    ANALYSIS_ARGUMENT_CHECK_FIELD(argument);
+    if (argument->origin_program_desc) {
+      LOG(WARNING) << "argument's origin_program_desc is already set, might "
+                      "duplicate called";
+    }
+    // set fluid model program path
+    if (!argument->fluid_model_program_path) {
+      ANALYSIS_ARGUMENT_CHECK_FIELD(argument->fluid_model_dir);
+      argument->fluid_model_program_path.reset(
+          new std::string(*argument->fluid_model_dir + "/__model__"));
+    }
+    ANALYSIS_ARGUMENT_CHECK_FIELD(argument->fluid_model_program_path);
+    // Load program.
+    auto program = LoadProgramDesc(*argument->fluid_model_program_path);
+    argument->origin_program_desc.reset(
+        new framework::proto::ProgramDesc(program));
+    // Create main data flow graph.
+    if (!argument->main_dfg) {
+      argument->main_dfg.reset(new DataFlowGraph);
+    }
+    // Persist the ProgramDesc in graph's attribute. The IR graph just keep the
+    // address, will segfault if the original ProgramDesc destroys.
+    auto &ir_program_p = argument->main_dfg->Attr("ir_program_desc").Pointer();
+    ir_program_p = new framework::ProgramDesc(program);
+
+    argument_ = argument;
+    return true;
+  }
+
+  bool Finalize() override { return true; }
+
+  void Run(DataFlowGraph *graph) override {
+    // Call all the IR Passes
+    IRPassManager ir_passes(*static_cast<framework::ProgramDesc *>(
+        argument_->main_dfg->Attr("ir_program_desc").Pointer()));
+    ir_passes.Apply(std::vector<std::string>(
+        {// Manual update the passes here.
+         "graph_viz_pass", "infer_clean_graph_pass", "graph_viz_pass",
+         "fc_fuse_pass", "graph_viz_pass"}));
+
+    PADDLE_ENFORCE(argument_->main_dfg.get());
+    argument_->main_dfg->Build(ir_passes.graph());
+    // PADDLE_ENFORCE(argument_->main_dfg->IsFullyConnected());
+  }
+
+  std::string repr() const override { return "fluid-to-ir-pass"; }
+
+ private:
+  Argument *argument_{nullptr};
+};
+
+}  // namespace analysis
+}  // namespace inference
+}  // namespace paddle

paddle/fluid/inference/analysis/fluid_to_ir_pass_tester.cc

+// 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.
+
+#include "paddle/fluid/inference/analysis/fluid_to_ir_pass.h"
+
+#include <gtest/gtest.h>
+#include "paddle/fluid/inference/analysis/ut_helper.h"
+
+namespace paddle {
+namespace inference {
+namespace analysis {
+
+TEST(FluidToIrPass, Test) {
+  FluidToIrPass pass;
+  Argument argument(FLAGS_inference_model_dir);
+  pass.Initialize(&argument);
+  pass.Run(argument.main_dfg.get());
+}
+
+}  // namespace analysis
+}  // namespace inference
+}  // namespace paddle
+
+USE_PASS(fc_fuse_pass);
+USE_PASS(graph_viz_pass);
+USE_PASS(infer_clean_graph_pass);

paddle/fluid/inference/analysis/helper.h

@@ -14,6 +14,7 @@ limitations under the License. */
 
 #pragma once
 
+#include <sys/stat.h>
 #include <cstdio>
 #include <fstream>
 #include <string>
@@ -151,6 +152,23 @@ static framework::proto::ProgramDesc LoadProgramDesc(
   return program_desc;
 }
 
+static bool FileExists(const std::string &filepath) {
+  std::ifstream file(filepath);
+  bool exists = file.is_open();
+  file.close();
+  return exists;
+}
+
+static bool PathExists(const std::string &path) {
+  struct stat statbuf;
+  if (stat(path.c_str(), &statbuf) != -1) {
+    if (S_ISDIR(statbuf.st_mode)) {
+      return true;
+    }
+  }
+  return false;
+}
+
 }  // namespace analysis
 }  // namespace inference
 }  // namespace paddle

paddle/fluid/inference/analysis/ir_pass_manager.cc

+// 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.
+
+#include "paddle/fluid/inference/analysis/ir_pass_manager.h"
+#include <string>
+
+namespace paddle {
+namespace inference {
+namespace analysis {
+
+IRPassManager::IRPassManager(const ProgramDesc& program) {
+  graph_.reset(new framework::ir::Graph(program));
+}
+
+void IRPassManager::Apply(const std::vector<std::string>& passes) {
+  graph_->Set("graph_viz_path", new std::string("./1.dot"));
+  // Apply all the passes
+  std::string pre_pass;
+  for (const std::string& pass_name : passes) {
+    LOG(WARNING) << "Running IR pass [" << pass_name << "]";
+    auto pass = framework::ir::PassRegistry::Instance().Get(pass_name);
+    if (pass_name == "graph_viz_pass") {
+      std::string dot_file_path =
+          "ir_" + (pre_pass.empty() ? "origin" : pre_pass) + ".dot";
+      pass->Set("graph_viz_path", new std::string(std::move(dot_file_path)));
+    }
+    graph_ = pass->Apply(std::move(graph_));
+    pre_pass = pass_name;
+  }
+}
+
+}  // namespace analysis
+}  // namespace inference
+}  // namespace paddle

paddle/fluid/inference/analysis/ir_pass_manager.h

+// 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.
+
+/*
+ * This file defines IRPassManager, it helps control the passes in IR. Inference
+ * phrase will load the model program and parameters from disk, that is quite
+ * different from the training phase.
+ * This manager will control the Passes and make the passes in IR work smoothly
+ * for inference.
+ */
+
+#include "paddle/fluid/framework/ir/graph.h"
+#include "paddle/fluid/framework/ir/pass.h"
+#include "paddle/fluid/framework/program_desc.h"
+
+namespace paddle {
+namespace inference {
+namespace analysis {
+using framework::ProgramDesc;
+
+class IRPassManager final {
+ public:
+  IRPassManager(const ProgramDesc& program);
+
+  void Apply(const std::vector<std::string>& passes);
+
+  framework::ir::Graph& graph() const { return *graph_; }
+
+ private:
+  std::unique_ptr<framework::ir::Graph> graph_;
+};
+
+}  // namespace analysis
+}  // namespace inference
+}  // namespace paddle

paddle/fluid/inference/analysis/model_store_pass.cc

@@ -35,19 +35,21 @@ void ModelStorePass::Run(DataFlowGraph *x) {
   std::stringstream ss;
   // NOTE these commands only works on linux.
   ss << "mkdir -p " << *argument_->model_output_store_path;
-  LOG(INFO) << "run command: " << ss.str();
+  VLOG(3) << "run command: " << ss.str();
   PADDLE_ENFORCE_EQ(system(ss.str().c_str()), 0);
   ss.str("");
 
   ss << "cp " << *argument_->fluid_model_dir << "/*"
      << " " << *argument_->model_output_store_path;
-  LOG(INFO) << "run command: " << ss.str();
+  VLOG(3) << "run command: " << ss.str();
   PADDLE_ENFORCE_EQ(system(ss.str().c_str()), 0);
 
   // Store program
   PADDLE_ENFORCE_NOT_NULL(argument_->transformed_program_desc,
                           "program desc is not transformed, should call "
                           "DataFlowGraphToFluidPass first.");
+  VLOG(3) << "store analyzed program to "
+          << *argument_->model_output_store_path;
   const std::string program_output_path =
       *argument_->model_output_store_path + "/__model__";
   std::ofstream file(program_output_path, std::ios::binary);
@@ -58,6 +60,8 @@ void ModelStorePass::Run(DataFlowGraph *x) {
   file.write(serialized_message.c_str(), serialized_message.size());
 }
 
+bool ModelStorePass::Finalize() { return true; }
+
 }  // namespace analysis
 }  // namespace inference
 }  // namespace paddle

paddle/fluid/inference/analysis/model_store_pass.h

@@ -44,6 +44,8 @@ class ModelStorePass : public DataFlowGraphPass {
     model in the disk, and that model can be reloaded for prediction again.)DD";
   }
 
+  bool Finalize() override;
+
  private:
   Argument* argument_{nullptr};
 };

paddle/fluid/inference/analysis/model_store_pass_tester.cc

@@ -30,7 +30,7 @@ TEST(DFG_StorePass, test) {
   argument.model_output_store_path.reset(
       new std::string("./_dfg_store_pass_tmp"));
   // disable storage in alalyzer
-  FLAGS_inference_analysis_output_storage_path = "";
+  FLAGS_IA_output_storage_path = "";
   analyzer.Run(&argument);
 
   ModelStorePass pass;

paddle/fluid/inference/analysis/node.h

@@ -38,7 +38,7 @@ namespace analysis {
 class NodeMap;
 
 // A helper class to maintain the status from Pass.
-struct NodeAttr {
+struct AnyAttr {
   using any_t =
       boost::variant<bool, float, int32_t, int64_t, void *, std::string>;
   // NOTE T should be a primary type or a struct combined by several primary
@@ -54,10 +54,9 @@ struct NodeAttr {
   void *&Pointer() { return As<void *>(); }
   std::string &String() { return As<std::string>(); }
 
- private:
   template <typename T>
   T &As() {
-    if (type_index_ == typeid(NodeAttr)) {
+    if (type_index_ == typeid(AnyAttr)) {
       type_index_ = typeid(T);
       any_data_ = T();
     } else {
@@ -68,7 +67,7 @@ struct NodeAttr {
 
  private:
   any_t any_data_;
-  std::type_index type_index_{typeid(NodeAttr)};
+  std::type_index type_index_{typeid(AnyAttr)};
 };
 
 /*
@@ -105,7 +104,7 @@ class Node {
 
   // Get an additional attribute and convert it to T data type. NOTE this will
   // silently create a new attribute if not exists.
-  NodeAttr &attr(const std::string &name) const { return attrs_[name]; }
+  AnyAttr &attr(const std::string &name) const { return attrs_[name]; }
 
   int id() const { return id_; }
 
@@ -150,7 +149,7 @@ class Node {
   Type type_{Type::kNone};
   // Mark this node is deleted by some pass.
   bool deleted_{false};
-  mutable std::unordered_map<std::string, NodeAttr> attrs_;
+  mutable std::unordered_map<std::string, AnyAttr> attrs_;
 };
 
 class Function;

paddle/fluid/inference/analysis/node_tester.cc

@@ -21,19 +21,19 @@ namespace inference {
 namespace analysis {
 
 TEST(NodeAttr, bool) {
-  NodeAttr x;
+  AnyAttr x;
   x.Bool() = true;
   ASSERT_EQ(x.Bool(), true);
 }
 
 TEST(NodeAttr, int32) {
-  NodeAttr x;
+  AnyAttr x;
   x.Int32() = 32;
   ASSERT_EQ(x.Int32(), 32);
 }
 
 TEST(NodeAttr, string) {
-  NodeAttr x;
+  AnyAttr x;
   x.String() = "Hello";
   ASSERT_EQ(x.String(), "Hello");
 }

paddle/fluid/inference/analysis/pass.h

@@ -63,7 +63,7 @@ class Pass {
   // Human-readable short representation.
   virtual std::string repr() const = 0;
   // Human-readable long description.
-  virtual std::string description() const = 0;
+  virtual std::string description() const { return "No DOC"; }
 };
 
 // NodePass process on any Node types.

paddle/fluid/inference/analysis/pass_manager.cc

@@ -22,7 +22,7 @@ namespace analysis {
 bool PassManager::Initialize(Argument* argument) {
   argument_ = argument;
   for (auto& pass : data_) {
-    LOG(INFO) << "Initializing pass " << pass->repr();
+    LOG(WARNING) << "Initializing pass [" << pass->repr() << "]";
     if (!pass->Initialize(argument)) {
       LOG(ERROR) << "Failed to initialize pass [" << pass->repr() << "]";
       return false;
@@ -33,8 +33,9 @@ bool PassManager::Initialize(Argument* argument) {
 
 void DfgPassManager::RunAll() {
   PADDLE_ENFORCE(argument_);
+  LOG(INFO) << "Total " << data_.size() << " passes";
   for (auto& pass : data_) {
-    VLOG(4) << "Running pass [" << pass->repr() << "]";
+    LOG(WARNING) << "Running pass [" << pass->repr() << "]";
     pass->Run(argument_->main_dfg.get());
   }
 }
@@ -42,8 +43,7 @@ void DfgPassManager::RunAll() {
 void NodePassManager::RunAll() {
   PADDLE_ENFORCE(argument_);
   PADDLE_ENFORCE(argument_->main_dfg.get());
-  auto trait =
-      GraphTraits<DataFlowGraph>(argument_->main_dfg.get()).nodes_in_DFS();
+  auto trait = GraphTraits<DataFlowGraph>(*argument_->main_dfg).nodes_in_DFS();
   for (auto& node : trait) {
     for (auto& pass : data_) {
       pass->Run(&node);

paddle/fluid/inference/analysis/subgraph_splitter.cc

@@ -34,7 +34,7 @@ inline void MarkOutLinksInSubGraph(const Function *func) {
 }
 
 void SubGraphSplitter::MarkNodesInsideSubGraph() {
-  for (auto &node : GraphTraits<DataFlowGraph>(graph_).nodes()) {
+  for (auto &node : GraphTraits<DataFlowGraph>(*graph_).nodes()) {
     if (node_inside_subgraph_teller_(&node)) {
       node.attr(kMarkerAttrName).Bool() = true;
       if (node.type() == Node::Type::kFunction) {
@@ -76,7 +76,7 @@ void UnionFindCombine(const node_map_t &node_map, size_t a, size_t b) {
 
 std::vector<std::vector<Node *>> SubGraphSplitter::ExtractSubGraphs() {
   std::vector<Node *> marked_nodes;
-  for (auto &node : GraphTraits<DataFlowGraph>(graph_).nodes_in_TS()) {
+  for (auto &node : GraphTraits<DataFlowGraph>(*graph_).nodes_in_TS()) {
     if (node.attr(kMarkerAttrName).Bool()) {
       marked_nodes.push_back(&node);
     }

paddle/fluid/inference/analysis/tensorrt_subgraph_node_mark_pass.cc

@@ -69,8 +69,8 @@ class DfgDebuggerPass : public DFG_GraphvizDrawPass {
 };
 
 Pass *TensorRTSubgraphNodeMarkPass::CreateGraphvizDebugerPass() const {
-  DFG_GraphvizDrawPass::Config config(
-      FLAGS_inference_analysis_graphviz_log_root, "tensorrt_marked_node");
+  DFG_GraphvizDrawPass::Config config(FLAGS_IA_graphviz_log_root,
+                                      "tensorrt_marked_node");
   return new DfgDebuggerPass(config);
 }
 bool TensorRTSubgraphNodeMarkPass::Finalize() { return true; }

paddle/fluid/inference/api/api_tensorrt_subgraph_engine_tester.cc

@@ -23,7 +23,7 @@ namespace paddle {
 DEFINE_string(dirname, "", "Directory of the inference model.");
 
 void CompareTensorRTWithFluid(bool enable_tensorrt) {
-  FLAGS_inference_analysis_enable_tensorrt_subgraph_engine = enable_tensorrt;
+  FLAGS_IA_enable_tensorrt_subgraph_engine = enable_tensorrt;
 
   //# 1. Create PaddlePredictor with a config.
   NativeConfig config0;

paddle/fluid/operators/CMakeLists.txt

@@ -9,7 +9,6 @@ function(op_library TARGET)
     # op_library is a function to create op library. The interface is same as
     # cc_library. But it handle split GPU/CPU code and link some common library
     # for ops.
-    set(OP_LIBRARY ${TARGET} ${OP_LIBRARY} PARENT_SCOPE)
     set(cc_srcs)
     set(cu_srcs)
     set(hip_cu_srcs)
@@ -92,6 +91,7 @@ function(op_library TARGET)
         endif()
     endforeach()
     endif(WIN32)
+    set(OP_LIBRARY ${TARGET} ${OP_LIBRARY} PARENT_SCOPE)
 
     list(LENGTH op_library_DEPS op_library_DEPS_len)
     if (${op_library_DEPS_len} GREATER 0)

paddle/fluid/operators/conv_mkldnn_op.cc

@@ -126,6 +126,15 @@ class ConvMKLDNNHandler : public platform::MKLDNNHandler {
                                pipeline);
   }
 
+  std::shared_ptr<mkldnn::memory> AcquireBiasMemoryFromPrimitive(
+      const std::shared_ptr<mkldnn::memory> user_bias_memory_p,
+      std::vector<mkldnn::primitive>& pipeline) {  // NOLINT
+    auto user_bias_pd = user_bias_memory_p->get_primitive_desc();
+    auto bias_pd = conv_pd_->bias_primitive_desc();
+    return this->AcquireMemory(bias_pd, user_bias_pd, user_bias_memory_p,
+                               "@bias_mem_p", pipeline);
+  }
+
   std::shared_ptr<mkldnn::convolution_forward> AcquireConvolution(
       std::shared_ptr<mkldnn::memory> src_memory_p,
       std::shared_ptr<mkldnn::memory> weights_memory_p,
@@ -147,6 +156,28 @@ class ConvMKLDNNHandler : public platform::MKLDNNHandler {
     return conv_p;
   }
 
+  std::shared_ptr<mkldnn::convolution_forward> AcquireConvolution(
+      std::shared_ptr<mkldnn::memory> src_memory_p,
+      std::shared_ptr<mkldnn::memory> weights_memory_p,
+      std::shared_ptr<mkldnn::memory> bias_memory_p,
+      std::shared_ptr<mkldnn::memory> dst_memory_p) {
+    auto prim_key = key_ + "@conv_p";
+    auto conv_p = std::static_pointer_cast<mkldnn::convolution_forward>(
+        dev_ctx_.GetBlob(prim_key));
+    PADDLE_ENFORCE((conv_p != nullptr) || (is_reusing_ == false),
+                   "Fail to find convolution primitive in device context");
+    if (conv_p == nullptr) {
+      conv_p = std::make_shared<mkldnn::convolution_forward>(
+          *conv_pd_, *(src_memory_p), *(weights_memory_p.get()),
+          *(bias_memory_p.get()), *(dst_memory_p.get()));
+
+      dev_ctx_.SetBlob(prim_key, conv_p);
+    } else {
+      is_reusing_ = true;
+    }
+    return conv_p;
+  }
+
   std::shared_ptr<mkldnn::convolution_backward_weights>
   AcquireConvolutionBackwardWeights(
       std::shared_ptr<mkldnn::memory> src_memory_p,
@@ -229,6 +260,7 @@ class ConvMKLDNNOpKernel : public paddle::framework::OpKernel<T> {
 
     auto* input = ctx.Input<Tensor>("Input");
     auto* filter = ctx.Input<Tensor>("Filter");
+    auto* bias = ctx.HasInput("Bias") ? ctx.Input<Tensor>("Bias") : nullptr;
     auto* output = ctx.Output<Tensor>("Output");
 
     PADDLE_ENFORCE(input->layout() == DataLayout::kMKLDNN &&
@@ -237,6 +269,17 @@ class ConvMKLDNNOpKernel : public paddle::framework::OpKernel<T> {
     PADDLE_ENFORCE(filter->layout() == DataLayout::kMKLDNN &&
                        filter->format() != memory::format::format_undef,
                    "Wrong layout/format set for Filter tensor");
+    PADDLE_ENFORCE(input->dims().size() == 4,
+                   "Input must be with 4 dimensions, i.e. NCHW");
+    PADDLE_ENFORCE(filter->dims().size() == 4,
+                   "Filter must be with 4 dimensions, i.e. OIHW");
+    if (bias) {
+      PADDLE_ENFORCE(bias->layout() == DataLayout::kMKLDNN &&
+                         bias->format() != memory::format::format_undef,
+                     "Wrong layout/format set for Bias tensor");
+      PADDLE_ENFORCE(bias->dims().size() == 1,
+                     "Bias must only have 1 dimension, i.e. X");
+    }
 
     std::vector<int> strides = ctx.Attr<std::vector<int>>("strides");
     std::vector<int> paddings = ctx.Attr<std::vector<int>>("paddings");
@@ -253,11 +296,6 @@ class ConvMKLDNNOpKernel : public paddle::framework::OpKernel<T> {
     const T* filter_data = filter->data<T>();
     T* output_data = output->mutable_data<T>(ctx.GetPlace());
 
-    PADDLE_ENFORCE(input->dims().size() == 4,
-                   "Input must be with 4 dimensions, i.e. NCHW");
-    PADDLE_ENFORCE(filter->dims().size() == 4,
-                   "Filter must be with 4 dimensions, i.e. OIHW");
-
     std::vector<int> src_tz = paddle::framework::vectorize2int(input->dims());
     std::vector<int> weights_tz =
         paddle::framework::vectorize2int(filter->dims());
@@ -288,13 +326,23 @@ class ConvMKLDNNOpKernel : public paddle::framework::OpKernel<T> {
         src_tz, platform::MKLDNNGetDataType<T>(), chosen_memory_format);
     auto weights_md = platform::MKLDNNMemDesc(
         weights_tz, platform::MKLDNNGetDataType<T>(), chosen_memory_format);
+    std::vector<int> bias_tz;  // TODO(mgallus): avoid empty vector creation.
+                               // Currently used whenever bias is != nullptr.
     auto dst_md = platform::MKLDNNMemDesc(
         dst_tz, platform::MKLDNNGetDataType<T>(), chosen_memory_format);
 
     // create a conv primitive descriptor and save it for usage in backward
-    std::shared_ptr<mkldnn::convolution_forward::primitive_desc> conv_pd =
-        ConvFwdPrimitiveDesc(src_md, weights_md, dst_md, strides, paddings,
-                             mkldnn_engine);
+    std::shared_ptr<mkldnn::convolution_forward::primitive_desc> conv_pd;
+    if (bias) {
+      bias_tz = paddle::framework::vectorize2int(bias->dims());
+      auto bias_md = platform::MKLDNNMemDesc(
+          bias_tz, platform::MKLDNNGetDataType<T>(), memory::format::x);
+      conv_pd = ConvFwdPrimitiveDesc(src_md, weights_md, bias_md, dst_md,
+                                     strides, paddings, mkldnn_engine);
+    } else {
+      conv_pd = ConvFwdPrimitiveDesc(src_md, weights_md, dst_md, strides,
+                                     paddings, mkldnn_engine);
+    }
     // Save conv_pd/src_memory/weights_memory for backward pass
     dev_ctx.SetBlob(key_conv_pd, conv_pd);
 
@@ -315,8 +363,22 @@ class ConvMKLDNNOpKernel : public paddle::framework::OpKernel<T> {
         handler.AcquireDstMemoryFromPrimitive(to_void_cast<T>(output_data));
 
     // create convolution op primitive
-    auto conv_p = handler.AcquireConvolution(src_memory_p, weights_memory_p,
+    std::shared_ptr<mkldnn::convolution_forward> conv_p;
+    if (bias) {
+      const T* bias_data = bias->data<T>();
+      auto user_bias_md = platform::MKLDNNMemDesc(
+          {bias_tz}, platform::MKLDNNGetDataType<T>(), memory::format::x);
+      auto user_bias_memory_p =
+          handler.AcquireBiasMemory(user_bias_md, to_void_cast<T>(bias_data));
+
+      auto bias_memory_p =
+          handler.AcquireBiasMemoryFromPrimitive(user_bias_memory_p, pipeline);
+      conv_p = handler.AcquireConvolution(src_memory_p, weights_memory_p,
+                                          bias_memory_p, dst_memory_p);
+    } else {
+      conv_p = handler.AcquireConvolution(src_memory_p, weights_memory_p,
                                           dst_memory_p);
+    }
 
     // push primitive to stream and wait until it's executed
     pipeline.push_back(*conv_p);
@@ -346,6 +408,27 @@ class ConvMKLDNNOpKernel : public paddle::framework::OpKernel<T> {
     return std::unique_ptr<mkldnn::convolution_forward::primitive_desc>(
         p_conv_pd);
   }
+
+  std::unique_ptr<mkldnn::convolution_forward::primitive_desc>
+  ConvFwdPrimitiveDesc(const memory::desc& src, const memory::desc& weights,
+                       const memory::desc& bias, const memory::desc& dst,
+                       const std::vector<int>& strides,
+                       const std::vector<int>& paddings,
+                       const mkldnn::engine& engine) const {
+    memory::dims stride_dims = {strides[0], strides[1]};
+    memory::dims padding_dims = {paddings[0], paddings[1]};
+
+    auto conv_desc = mkldnn::convolution_forward::desc(
+        mkldnn::prop_kind::forward, mkldnn::convolution_direct, src, weights,
+        bias, dst, stride_dims, padding_dims, padding_dims,
+        mkldnn::padding_kind::zero);
+
+    auto p_conv_pd =
+        new mkldnn::convolution_forward::primitive_desc(conv_desc, engine);
+
+    return std::unique_ptr<mkldnn::convolution_forward::primitive_desc>(
+        p_conv_pd);
+  }
 };
 
 template <typename T>

paddle/fluid/operators/conv_op.cc

@@ -37,6 +37,7 @@ void ConvOp::InferShape(framework::InferShapeContext* ctx) const {
 
   auto in_dims = ctx->GetInputDim("Input");
   auto filter_dims = ctx->GetInputDim("Filter");
+
   std::vector<int> strides = ctx->Attrs().Get<std::vector<int>>("strides");
   std::vector<int> paddings = ctx->Attrs().Get<std::vector<int>>("paddings");
   int groups = ctx->Attrs().Get<int>("groups");
@@ -57,7 +58,6 @@ void ConvOp::InferShape(framework::InferShapeContext* ctx) const {
   PADDLE_ENFORCE_EQ(in_dims[1], filter_dims[1] * groups,
                     "The number of input channels should be equal to filter "
                     "channels * groups.");
-
   PADDLE_ENFORCE_EQ(
       filter_dims[0] % groups, 0,
       "The number of output channels should be divided by groups.");
@@ -122,6 +122,11 @@ void Conv2DOpMaker::Make() {
            "H is the height of the filter, and W is the width of the filter. "
            "If the groups attribute is greater than 1, C equals the number of "
            "input image channels divided by the groups.");
+  AddInput("Bias",
+           "(Tensor) Bias to be added to each output of filter application."
+           "The format of output tensor is X (one-dimensional) of size equal"
+           "to the number of output channels. Only used with MKL-DNN.")
+      .AsDispensable();
   AddOutput("Output",
             "(Tensor) The output tensor of convolution operator. "
             "The format of output tensor is also NCHW.")

paddle/fluid/operators/distributed/request_handler_impl.cc

@@ -130,12 +130,13 @@ bool RequestCheckpointHandler::Handle(const std::string& varname,
       checkpoint_notify_id != -1,
       "when checkpoint_notify_id = -1, there should be no RPC invoke.");
 
-  auto* lt_var = scope->FindVar(LOOKUP_TABLE_PATH)->GetMutable<std::string>();
+  // TODO(tangwei12): find out why scope will be error.
+  auto* lt_var = scope_->FindVar(LOOKUP_TABLE_PATH)->GetMutable<std::string>();
   lt_var->clear();
   lt_var->append(out_var_name);
   VLOG(4) << "RequestCheckpointHandler update var kLookupTablePath to: "
           << out_var_name;
-  executor_->RunPreparedContext(checkpoint_prepared_ctx_.get(), scope);
+  executor_->RunPreparedContext(checkpoint_prepared_ctx_.get(), scope_);
   return true;
 }
 

paddle/fluid/operators/elementwise_mul_op.h

@@ -14,6 +14,7 @@ limitations under the License. */
 
 #pragma once
 #include "paddle/fluid/operators/elementwise_op_function.h"
+#include "paddle/fluid/operators/math/blas.h"
 
 namespace paddle {
 namespace operators {
@@ -23,6 +24,37 @@ struct MulFunctor {
   inline HOSTDEVICE T operator()(T a, T b) const { return a * b; }
 };
 
+template <typename DeviceContext, typename T>
+void default_elementwise_mul(const framework::ExecutionContext& ctx,
+                             const framework::Tensor* x,
+                             const framework::Tensor* y, framework::Tensor* z) {
+  int axis = ctx.Attr<int>("axis");
+  ElementwiseComputeEx<MulFunctor<T>, DeviceContext, T>(ctx, x, y, axis,
+                                                        MulFunctor<T>(), z);
+}
+
+template <typename DeviceContext, typename T>
+typename std::enable_if<
+    std::is_floating_point<T>::value &&
+    std::is_same<DeviceContext, platform::CPUDeviceContext>::value>::type
+elementwise_mul(const framework::ExecutionContext& ctx,
+                const framework::Tensor* x, const framework::Tensor* y,
+                framework::Tensor* z) {
+  auto blas = math::GetBlas<DeviceContext, T>(ctx);
+  blas.VMUL(x->numel(), x->data<T>(), y->data<T>(),
+            z->mutable_data<T>(ctx.GetPlace()));
+}
+
+template <typename DeviceContext, typename T>
+typename std::enable_if<
+    !std::is_floating_point<T>::value ||
+    !std::is_same<DeviceContext, platform::CPUDeviceContext>::value>::type
+elementwise_mul(const framework::ExecutionContext& ctx,
+                const framework::Tensor* x, const framework::Tensor* y,
+                framework::Tensor* z) {
+  default_elementwise_mul<DeviceContext, T>(ctx, x, y, z);
+}
+
 template <typename DeviceContext, typename T>
 class ElementwiseMulKernel : public framework::OpKernel<T> {
  public:
@@ -33,9 +65,11 @@ class ElementwiseMulKernel : public framework::OpKernel<T> {
     auto* y = ctx.Input<Tensor>("Y");
     auto* z = ctx.Output<Tensor>("Out");
     z->mutable_data<T>(ctx.GetPlace());
-    int axis = ctx.Attr<int>("axis");
-    ElementwiseComputeEx<MulFunctor<T>, DeviceContext, T>(ctx, x, y, axis,
-                                                          MulFunctor<T>(), z);
+    if (x->numel() == y->numel()) {
+      elementwise_mul<DeviceContext, T>(ctx, x, y, z);
+    } else {
+      default_elementwise_mul<DeviceContext, T>(ctx, x, y, z);
+    }
   }
 };
 

paddle/fluid/operators/fc_op.cc

@@ -35,9 +35,14 @@ void FCOp::InferShape(framework::InferShapeContext* ctx) const {
 
   if (ctx->HasInput("Bias")) {
     auto bias_dims = ctx->GetInputDim("Bias");
+    if (bias_dims.size() == 2) {
       PADDLE_ENFORCE_EQ(bias_dims[0], 1, "The shape of Bias must be [1, dim].");
       PADDLE_ENFORCE_EQ(bias_dims[1], w_dims[1],
                         "The shape of Bias must be [1, dim].");
+    } else if (bias_dims.size() == 1) {
+      PADDLE_ENFORCE_EQ(bias_dims[0], w_dims[1],
+                        "The shape of Bias must be [1, dim].");
+    }
   }
   PADDLE_ENFORCE(in_dims.size() == 2 || in_dims.size() == 4,
                  "Fully Connected input should be 2-D or 4-D tensor.");

paddle/fluid/operators/load_op.cc

@@ -92,6 +92,7 @@ class LoadOp : public framework::OperatorBase {
     platform::DeviceContextPool &pool = platform::DeviceContextPool::Instance();
     auto &dev_ctx = *pool.Get(place);
     framework::DeserializeFromStream(fin, selectedRows, dev_ctx);
+    selectedRows->SyncIndex();
   }
 };
 

paddle/fluid/operators/math/blas.h

@@ -134,6 +134,9 @@ class Blas {
   template <typename T>
   void VADD(int n, const T* x, const T* y, T* z) const;
 
+  template <typename T>
+  void VMUL(int n, const T* x, const T* y, T* z) const;
+
   template <typename T>
   void VCOPY(int n, const T* x, T* y) const;
 
@@ -202,6 +205,11 @@ class BlasT : private Blas<DeviceContext> {
     Base()->template VADD<T>(args...);
   }
 
+  template <typename... ARGS>
+  void VMUL(ARGS... args) const {
+    Base()->template VMUL<T>(args...);
+  }
+
   template <typename... ARGS>
   void VCOPY(ARGS... args) const {
     Base()->template VCOPY<T>(args...);

paddle/fluid/operators/math/blas_impl.h

@@ -82,6 +82,11 @@ struct CBlas<float> {
   static void VADD(ARGS... args) {
     platform::dynload::vsAdd(args...);
   }
+
+  template <typename... ARGS>
+  static void VMUL(ARGS... args) {
+    platform::dynload::vsMul(args...);
+  }
 };
 
 template <>
@@ -142,6 +147,11 @@ struct CBlas<double> {
   static void VADD(ARGS... args) {
     platform::dynload::vdAdd(args...);
   }
+
+  template <typename... ARGS>
+  static void VMUL(ARGS... args) {
+    platform::dynload::vdMul(args...);
+  }
 };
 
 #else
@@ -199,6 +209,7 @@ struct CBlas<platform::float16> {
   static void SMM_GEMM(...) {
     PADDLE_THROW("float16 SMM_GEMM not supported on CPU");
   }
+  static void VMUL(...) { PADDLE_THROW("float16 VMUL not supported on CPU"); }
 #ifdef PADDLE_WITH_MKLML
   static void GEMM_BATCH(...) {
     PADDLE_THROW("float16 GEMM_BATCH not supported on CPU");
@@ -374,6 +385,20 @@ void Blas<platform::CPUDeviceContext>::VADD(int n, const T *x, const T *y,
 #endif
 }
 
+template <>
+template <typename T>
+void Blas<platform::CPUDeviceContext>::VMUL(int n, const T *x, const T *y,
+                                            T *z) const {
+#ifdef PADDLE_WITH_MKLML
+  CBlas<T>::VMUL(n, x, y, z);
+#else
+  // try to find if openblas support vmul
+  for (int i = 0; i < n; ++i) {
+    z[i] = x[i] * y[i];
+  }
+#endif
+}
+
 template <>
 template <typename T>
 void Blas<platform::CPUDeviceContext>::GEMV(bool trans_a, int M, int N, T alpha,

paddle/fluid/operators/save_op.cc

@@ -142,6 +142,8 @@ class SaveOp : public framework::OperatorBase {
     std::string filename = lt_var->data();
     VLOG(4) << "SaveSelectedRows get File name: " << filename;
 
+    MkDirRecursively(DirName(filename).c_str());
+
     auto &selectedRows = var->Get<framework::SelectedRows>();
 
     // get device context from pool

paddle/fluid/platform/dynload/cublas.h

@@ -17,10 +17,10 @@
 #include <cublasXt.h>
 #include <cublas_v2.h>
 #include <cuda.h>
-#include <dlfcn.h>
 #include <mutex>  // NOLINT
 #include <type_traits>
 #include "paddle/fluid/platform/dynload/dynamic_loader.h"
+#include "paddle/fluid/platform/port.h"
 
 namespace paddle {
 namespace platform {

paddle/fluid/platform/dynload/cudnn.h

@@ -15,9 +15,9 @@ limitations under the License. */
 #pragma once
 
 #include <cudnn.h>
-#include <dlfcn.h>
 #include <mutex>  // NOLINT
 #include "paddle/fluid/platform/dynload/dynamic_loader.h"
+#include "paddle/fluid/platform/port.h"
 
 namespace paddle {
 namespace platform {

paddle/fluid/platform/dynload/cupti.h

@@ -17,10 +17,10 @@ limitations under the License. */
 
 #include <cuda.h>
 #include <cupti.h>
-#include <dlfcn.h>
 #include <mutex>  // NOLINT
 
 #include "paddle/fluid/platform/dynload/dynamic_loader.h"
+#include "paddle/fluid/platform/port.h"
 
 namespace paddle {
 namespace platform {

paddle/fluid/platform/dynload/curand.h

@@ -14,9 +14,9 @@ limitations under the License. */
 #pragma once
 
 #include <curand.h>
-#include <dlfcn.h>
 
 #include <mutex>  // NOLINT
+#include "paddle/fluid/platform/port.h"
 
 #include "paddle/fluid/platform/dynload/dynamic_loader.h"
 

paddle/fluid/platform/dynload/mklml.h

@@ -14,10 +14,10 @@ limitations under the License. */
 
 #pragma once
 
-#include <dlfcn.h>
 #include <mkl.h>
 #include <mutex>  // NOLINT
 #include "paddle/fluid/platform/dynload/dynamic_loader.h"
+#include "paddle/fluid/platform/port.h"
 
 namespace paddle {
 namespace platform {
@@ -49,25 +49,27 @@ extern void* mklml_dso_handle;
 
 #define MKLML_ROUTINE_EACH(__macro) \
   __macro(cblas_sgemm);             \
-  __macro(cblas_saxpy);             \
-  __macro(cblas_scopy);             \
-  __macro(cblas_sgemv);             \
-  __macro(cblas_sgemm_batch);       \
   __macro(cblas_dgemm);             \
+  __macro(cblas_saxpy);             \
   __macro(cblas_daxpy);             \
+  __macro(cblas_scopy);             \
   __macro(cblas_dcopy);             \
+  __macro(cblas_sgemv);             \
   __macro(cblas_dgemv);             \
-  __macro(cblas_dgemm_batch);       \
-  __macro(vsAdd);                   \
-  __macro(vdAdd);                   \
   __macro(cblas_sgemm_alloc);       \
-  __macro(cblas_sgemm_pack);        \
-  __macro(cblas_sgemm_compute);     \
-  __macro(cblas_sgemm_free);        \
   __macro(cblas_dgemm_alloc);       \
+  __macro(cblas_sgemm_pack);        \
   __macro(cblas_dgemm_pack);        \
+  __macro(cblas_sgemm_compute);     \
   __macro(cblas_dgemm_compute);     \
+  __macro(cblas_sgemm_free);        \
   __macro(cblas_dgemm_free);        \
+  __macro(cblas_sgemm_batch);       \
+  __macro(cblas_dgemm_batch);       \
+  __macro(vsAdd);                   \
+  __macro(vdAdd);                   \
+  __macro(vsMul);                   \
+  __macro(vdMul);                   \
   __macro(MKL_Set_Num_Threads)
 
 MKLML_ROUTINE_EACH(DECLARE_DYNAMIC_LOAD_MKLML_WRAP);

paddle/fluid/platform/dynload/nccl.h

@@ -13,12 +13,11 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 #pragma once
 
-#include <dlfcn.h>
 #include <nccl.h>
 
 #include <mutex>  // NOLINT
-
 #include "paddle/fluid/platform/dynload/dynamic_loader.h"
+#include "paddle/fluid/platform/port.h"
 
 namespace paddle {
 namespace platform {

paddle/fluid/platform/dynload/warpctc.h

@@ -14,10 +14,9 @@ limitations under the License. */
 
 #pragma once
 
-#include <dlfcn.h>
 #include <mutex>  // NOLINT
-
 #include "paddle/fluid/platform/dynload/dynamic_loader.h"
+#include "paddle/fluid/platform/port.h"
 #include "warpctc/include/ctc.h"
 
 namespace paddle {

paddle/fluid/platform/enforce.h

@@ -14,9 +14,6 @@ limitations under the License. */
 
 #pragma once
 
-#include <dlfcn.h>     // for dladdr
-#include <execinfo.h>  // for backtrace
-
 #ifdef __GNUC__
 #include <cxxabi.h>  // for __cxa_demangle
 #endif               // __GNUC__
@@ -37,6 +34,7 @@ limitations under the License. */
 
 #include "glog/logging.h"
 #include "paddle/fluid/platform/macros.h"
+#include "paddle/fluid/platform/port.h"
 #include "paddle/fluid/string/printf.h"
 #include "paddle/fluid/string/to_string.h"
 
@@ -75,7 +73,7 @@ struct EnforceNotMet : public std::exception {
 
       sout << string::Sprintf("%s at [%s:%d]", exp.what(), f, l) << std::endl;
       sout << "PaddlePaddle Call Stacks: " << std::endl;
-
+#if !defined(_WIN32)
       void* call_stack[TRACE_STACK_LIMIT];
       auto size = backtrace(call_stack, TRACE_STACK_LIMIT);
       auto symbols = backtrace_symbols(call_stack, size);
@@ -95,6 +93,9 @@ struct EnforceNotMet : public std::exception {
         }
       }
       free(symbols);
+#else
+      sout << "Windows not support stack backtrace yet.";
+#endif
       err_str_ = sout.str();
     }
   }

paddle/fluid/platform/mkldnn_helper.h

@@ -125,6 +125,11 @@ class MKLDNNHandler {
     return this->AcquireMemory(md, ptr, "@user_weights_mem_p");
   }
 
+  std::shared_ptr<mkldnn::memory> AcquireBiasMemory(
+      const mkldnn::memory::desc& md, void* ptr) {
+    return this->AcquireMemory(md, ptr, "@user_bias_mem_p");
+  }
+
   std::shared_ptr<mkldnn::memory> AcquireDstMemory(
       const mkldnn::memory::desc& md, void* ptr) {
     return this->AcquireMemory(md, ptr, "@user_dst_mem_p");

paddle/fluid/platform/port.h

+// 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.
+
+#pragma once
+
+#include <stdexcept>
+#include <string>
+
+#if !defined(_WIN32)
+#include <dlfcn.h>     // for dladdr
+#include <execinfo.h>  // for backtrace
+#else
+#include <Shlwapi.h>
+#include <Windows.h>
+
+static void* dlsym(void* handle, const char* symbol_name) {
+  FARPROC found_symbol;
+  found_symbol = GetProcAddress((HMODULE)handle, symbol_name);
+
+  if (found_symbol == NULL) {
+    throw std::runtime_error(std::string(symbol_name) + " not found.");
+  }
+  return reinterpret_cast<void*>(found_symbol);
+}
+
+#endif

paddle/fluid/pybind/CMakeLists.txt

+set(PYBIND_DEPS pybind python proto_desc memory executor prune profiler feed_fetch_method
+          )
+if(NOT WIN32)
+list(APPEND PYBIND_DEPS parallel_executor)
+endif()
 if(WITH_PYTHON)
   if(WITH_AMD_GPU)
     hip_library(paddle_pybind SHARED
       SRCS pybind.cc exception.cc protobuf.cc const_value.cc recordio.cc
-      DEPS pybind python proto_desc memory executor prune profiler feed_fetch_method
-           parallel_executor
+      DEPS ${PYBIND_DEPS}
       ${GLOB_OP_LIB})
   else()
     cc_library(paddle_pybind SHARED
       SRCS pybind.cc exception.cc protobuf.cc const_value.cc recordio.cc
-      DEPS pybind python proto_desc memory executor prune profiler feed_fetch_method
-           parallel_executor
+      DEPS ${PYBIND_DEPS}
       ${GLOB_OP_LIB})
-    if(NOT APPLE AND NOT ANDROID)
+    if(NOT APPLE AND NOT ANDROID AND NOT WIN32)
       target_link_libraries(paddle_pybind rt)
-    endif(NOT APPLE AND NOT ANDROID)
+    endif(NOT APPLE AND NOT ANDROID AND NOT WIN32)
   endif(WITH_AMD_GPU)
 
   cc_test(tensor_py_test SRCS tensor_py_test.cc DEPS python)

python/paddle/fluid/framework.py

@@ -1363,6 +1363,13 @@ class Program(object):
         self._current_role = core.op_proto_and_checker_maker.OpRole.Forward
         self._op_role_var = []
 
+        # for distribute
+        self._is_distributed = False
+        self._is_chief = False
+        self._slice_vars_and_attrs = []
+        self._endpoints = []
+        self._distributed_lookup_table = None
+
     @property
     def op_role(self):
         """

python/paddle/fluid/io.py

@@ -372,6 +372,7 @@ def load_vars(executor,
         load_vars(
             executor,
             dirname=dirname,
+            main_program=main_program,
             vars=list(filter(predicate, main_program.list_vars())),
             filename=filename)
     else:
@@ -403,9 +404,12 @@ def load_vars(executor,
                 inputs={},
                 outputs={"Out": load_var_list},
                 attrs={'file_path': os.path.join(dirname, filename)})
-
         executor.run(load_prog)
 
+        # load slice vars on pserver, if have it.
+        _load_slice_up_vars(executor, dirname,
+                            main_program._slice_vars_and_attrs)
+
 
 def load_params(executor, dirname, main_program=None, filename=None):
     """
@@ -659,11 +663,19 @@ def save_inference_model(dirname,
 
     save_persistables(executor, dirname, inference_program, params_filename)
 
+    # if there is lookup table, the trainer 0 will notify all pserver to save.
+    if main_program._is_distributed and main_program._is_chief and main_program._distributed_lookup_table:
+        lookup_table_filename = os.path.join(dirname, "__lookup_table__")
+        _save_lookup_tables_by_notify(executor, lookup_table_filename,
+                                      main_program._distributed_lookup_table,
+                                      main_program._endpoints)
+
 
 def load_inference_model(dirname,
                          executor,
                          model_filename=None,
-                         params_filename=None):
+                         params_filename=None,
+                         pserver_endpoints=None):
     """
     Load inference model from a directory
 
@@ -679,6 +691,10 @@ def load_inference_model(dirname,
                                    parameters were saved in a single binary
                                    file. If parameters were saved in separate
                                    files, set it as 'None'.
+        pserver_endpoints(list|None): This only need by distributed inference.
+                                    When use distributed look up table in training,
+                                    We also need it in inference.The parameter is
+                                    a list of pserver endpoints.
 
     Returns:
         tuple: The return of this function is a tuple with three elements:
@@ -697,12 +713,16 @@ def load_inference_model(dirname,
 
             exe = fluid.Executor(fluid.CPUPlace())
             path = "./infer_model"
+            endpoints = ["127.0.0.1:2023","127.0.0.1:2024"]
             [inference_program, feed_target_names, fetch_targets] =
                 fluid.io.load_inference_model(dirname=path, executor=exe)
             results = exe.run(inference_program,
                           feed={feed_target_names[0]: tensor_img},
                           fetch_list=fetch_targets)
 
+            # if we need lookup table, we will use:
+            fluid.io.load_inference_model(dirname=path, executor=exe, pserver_endpoints=endpoints)
+
             # In this exsample, the inference program was saved in the
             # "./infer_model/__model__" and parameters were saved in
             # separate files in ""./infer_model".
@@ -729,6 +749,9 @@ def load_inference_model(dirname,
     program = Program.parse_from_string(program_desc_str)
     load_persistables(executor, dirname, program, params_filename)
 
+    if pserver_endpoints:
+        program = _endpoints_replacement(program, pserver_endpoints)
+
     feed_target_names = program.desc.get_feed_target_names()
     fetch_target_names = program.desc.get_fetch_target_names()
     fetch_targets = [
@@ -738,6 +761,61 @@ def load_inference_model(dirname,
     return [program, feed_target_names, fetch_targets]
 
 
+def _save_lookup_tables_by_notify(executor, dirname, lookup_table,
+                                  pserver_endpoints):
+    """
+    This function will send checkpoint notify message from Trainer 0
+    to all the pservers.
+    The checkpoint notify message contains lookup table name,
+    the absolute path on pserver to save lookup_table.
+
+    Args:
+        executor(Executor): The executor to run for send checkpoint notify.
+        dirname(str): The folder where to save.
+        lookup_table(string): the lookup table name, when use distribute
+            lookup table, we can get lookup table name by DistributeTranspiler.
+            table_name
+        ps_endpoint_list(list): the parameter server ip:port list.
+            when use distribute lookup table, we can get ps_endpoint_list by
+            distribute arguments.
+    Return:
+        None
+
+    Examples:
+        .. code-block:: python
+
+            exe = fluid.Executor(fluid.CPUPlace())
+            param_path = "./my_paddle_model"
+            table_name = "share_w"
+            ps_endpoints = ["127.0.0.1:6000","127.0.0.1:6001"]
+
+            _save_pserver_vars_by_notify(executor=exe,
+                    dirname=param_path, lookup_table=table_name,
+                    pserver_endpoints=ps_endpoints)
+    """
+
+    pserver_notify_program = Program()
+    pserver_notify_block = pserver_notify_program.global_block()
+
+    attrs = {}
+    attrs['epmap'] = pserver_endpoints
+    attrs['dir'] = dirname
+    attrs['lookup_table'] = lookup_table
+
+    pserver_notify_block.append_op(
+        type='checkpoint_notify', inputs={}, outputs={}, attrs=attrs)
+    executor.run(pserver_notify_program)
+
+
+def _endpoints_replacement(program, endpoints):
+    ENDPOINT_MAP = "epmap"
+    for op in program.global_block().ops:
+        if op.has_attr(ENDPOINT_MAP):
+            op.set_attr(ENDPOINT_MAP, endpoints)
+    program._sync_with_cpp()
+    return program
+
+
 def get_parameter_value(para, executor):
     """
     Get the LoDTensor value of the given parameter.
@@ -799,3 +877,46 @@ def get_parameter_value_by_name(name, executor, program=None):
         program = default_main_program()
     var = program.global_block().var(name)
     return get_parameter_value(var, executor)
+
+
+def _load_slice_up_vars(executor, dirname, slice_vars_and_attrs):
+    if not slice_vars_and_attrs:
+        return
+
+    load_prog = Program()
+    load_block = load_prog.global_block()
+
+    for var_tuple in slice_vars_and_attrs:
+        orig_var = var_tuple[0]
+        start = var_tuple[1]
+        slice_var = var_tuple[2]
+        end = start + reduce(lambda x, y: x * y, slice_var.shape)
+
+        clone_orig_var = load_block.create_var(
+            name=orig_var.name,
+            type=orig_var.type,
+            shape=orig_var.shape,
+            dtype=orig_var.dtype,
+            persistable=True)
+
+        clone_slice_var = load_block.create_var(
+            name=slice_var.name,
+            type=slice_var.type,
+            shape=slice_var.shape,
+            dtype=slice_var.dtype,
+            persistable=True)
+
+        load_block.append_op(
+            type='load',
+            inputs={},
+            outputs={'Out': [clone_orig_var]},
+            attrs={'file_path': os.path.join(dirname, clone_orig_var.name)})
+        load_block.append_op(
+            type="slice",
+            inputs={'Input': clone_orig_var},
+            outputs={'Out': clone_slice_var},
+            attrs={'axes': [0],
+                   'starts': [start],
+                   'ends': [end]})
+
+    executor.run(load_prog)

python/paddle/fluid/tests/unittests/test_dist_transpiler.py

@@ -47,7 +47,6 @@ class TranspilerTest(unittest.TestCase):
         avg_cost = fluid.layers.mean(cost)
         sgd_optimizer = fluid.optimizer.SGD(learning_rate=0.1)
         sgd_optimizer.minimize(avg_cost)
-        return
 
     def get_main_program(self):
         main = fluid.Program()
@@ -95,6 +94,7 @@ class TranspilerTest(unittest.TestCase):
     def test_transpiler(self):
         main = fluid.Program()
         startup = fluid.Program()
+        with fluid.unique_name.guard():
             with fluid.program_guard(main, startup):
                 self.transpiler_test_impl()
 
@@ -249,7 +249,6 @@ class TestLRDecay(TranspilerTest):
                 decay_rate=0.1,
                 staircase=True))
         sgd_optimizer.minimize(avg_cost)
-        return
 
     def transpiler_test_impl(self):
         pserver, startup = self.get_pserver(self.pserver1_ep)
@@ -279,7 +278,6 @@ class TestLRDecayConditional(TranspilerTest):
             learning_rate=fluid.layers.piecewise_decay([10000, 20000],
                                                        [1.0, 0.5, 1.0]))
         sgd_optimizer.minimize(avg_cost)
-        return
 
     def transpiler_test_impl(self):
         pserver, startup = self.get_pserver(self.pserver1_ep)
@@ -328,7 +326,6 @@ class TestL2Decay(TranspilerTest):
         avg_cost = fluid.layers.mean(cost)
         sgd_optimizer = fluid.optimizer.SGD(learning_rate=0.1)
         sgd_optimizer.minimize(avg_cost)
-        return
 
     def transpiler_test_impl(self):
         pserver, startup = self.get_pserver(self.pserver1_ep)
@@ -363,7 +360,6 @@ class TestL2DecayWithPiecewise(TranspilerTest):
             momentum=0.9,
             regularization=fluid.regularizer.L2Decay(1e-4))
         sgd_optimizer.minimize(avg_cost)
-        return
 
     def transpiler_test_impl(self):
         pserver, startup = self.get_pserver(self.pserver1_ep)
@@ -393,13 +389,14 @@ class TestDistLookupTableBase(TranspilerTest):
     def network_with_table(self, is_sparse, is_distributed):
         self.table_size = 1000
         self.emb_size = 64
+        self.lookup_table_name = 'shared_w'
 
         def emb_pool(ids):
             emb = fluid.layers.embedding(
                 input=ids,
                 size=[self.table_size, self.emb_size],
                 dtype='float32',
-                param_attr='shared_w',  # share parameter
+                param_attr=self.lookup_table_name,  # share parameter
                 is_sparse=is_sparse,
                 is_distributed=is_distributed)
             pool = fluid.layers.sequence_pool(input=emb, pool_type='average')
@@ -572,7 +569,7 @@ class TestDistLookupTableSliceSize(TestDistLookupTableBase):
 
     def transpiler_test_impl(self):
         config = fluid.DistributeTranspilerConfig()
-        pserver1, startup1 = self.get_pserver(self.pserver1_ep, config)
+        pserver1, _ = self.get_pserver(self.pserver1_ep, config)
 
         self.assertTrue(self.transpiler.has_distributed_lookup_table)
         lookup_table_var = pserver1.global_block().vars[
@@ -582,6 +579,21 @@ class TestDistLookupTableSliceSize(TestDistLookupTableBase):
         self.assertEqual(row_size, calc_row_size)
 
 
+class TestDistArgsInProgram(TestDistLookupTableBase):
+    def net_conf(self):
+        self.network_with_table(is_sparse=True, is_distributed=True)
+
+    def transpiler_test_impl(self):
+        trainer, _ = self.get_trainer()
+
+        self.assertTrue(trainer._is_distributed)
+        self.assertTrue(trainer._is_chief)
+        self.assertEqual(trainer._distributed_lookup_table,
+                         self.lookup_table_name)
+        self.assertEqual(trainer._endpoints,
+                         [self.pserver1_ep, self.pserver2_ep])
+
+
 class TestRMSPropOptimizer(TranspilerTest):
     def net_conf(self):
         x = fluid.layers.data(name='x', shape=[1000], dtype='float32')
@@ -595,7 +607,6 @@ class TestRMSPropOptimizer(TranspilerTest):
         avg_cost = fluid.layers.mean(cost)
         optimizer = fluid.optimizer.RMSProp(learning_rate=0.1)
         optimizer.minimize(avg_cost)
-        return
 
     def transpiler_test_impl(self):
         pserver, startup = self.get_pserver(self.pserver1_ep)
@@ -612,5 +623,40 @@ class TestRMSPropOptimizer(TranspilerTest):
         self.assertEqual(moment_var.shape, (500, 1000))
 
 
+class TestLoadSliceVar(TranspilerTest):
+    def net_conf(self):
+        x = fluid.layers.data(name='x', shape=[1000], dtype='float32')
+        y_predict = fluid.layers.fc(input=x,
+                                    size=1000,
+                                    act=None,
+                                    param_attr=fluid.ParamAttr(name='fc_w'),
+                                    bias_attr=fluid.ParamAttr(name='fc_b'))
+        y = fluid.layers.data(name='y', shape=[1], dtype='float32')
+        cost = fluid.layers.square_error_cost(input=y_predict, label=y)
+        avg_cost = fluid.layers.mean(cost)
+        optimizer = fluid.optimizer.RMSProp(learning_rate=0.1)
+        optimizer.minimize(avg_cost)
+
+    def transpiler_test_impl(self):
+        pserver, _ = self.get_pserver(self.pserver1_ep)
+        pserver2, _ = self.get_pserver(self.pserver2_ep)
+
+        self.assertTrue(pserver._slice_vars_and_attrs)
+        self.assertTrue(pserver2._slice_vars_and_attrs)
+
+        for idx in xrange(len(pserver._slice_vars_and_attrs)):
+            self.assertEqual(pserver._slice_vars_and_attrs[idx][0],
+                             pserver2._slice_vars_and_attrs[idx][0])
+
+            total_numel = reduce(lambda x, y: x * y,
+                                 pserver._slice_vars_and_attrs[idx][0].shape)
+            self.assertEqual(
+                total_numel,
+                reduce(lambda x, y: x * y,
+                       pserver._slice_vars_and_attrs[idx][2].shape) + reduce(
+                           lambda x, y: x * y,
+                           pserver2._slice_vars_and_attrs[idx][2].shape))
+
+
 if __name__ == "__main__":
     unittest.main()

python/paddle/fluid/transpiler/distribute_transpiler.py

@@ -215,6 +215,13 @@ class DistributeTranspiler(object):
         for param_var, grad_var in self.params_grads:
             self.param_name_to_grad_name[param_var.name] = grad_var.name
 
+        # add distributed attrs to program
+        self.origin_program._is_distributed = True
+        self.origin_program._endpoints = self.pserver_endpoints
+        self.origin_program._is_chief = self.trainer_id == 0
+        self.origin_program._distributed_lookup_table = self.table_name if self.table_name else None
+
+        # split and create vars, then put splited vars in dicts for later use.
         # step 1: split and create vars, then put splited vars in dicts for later use.
         self._init_splited_vars()
 
@@ -590,6 +597,8 @@ class DistributeTranspiler(object):
             checkpoint_block_id = self._create_checkpoint_save_block(
                 pserver_program, table_opt_block.idx)
 
+            pserver_program._distributed_lookup_table = self.table_name
+
         # NOTE: if has_distributed_lookup_table is False, then prefetch_block will
         # not be executed, so it's safe to use optimize_block to hold the place
         if self.has_distributed_lookup_table:
@@ -616,6 +625,10 @@ class DistributeTranspiler(object):
             outputs={},
             attrs=attrs)
 
+        # add distributed attrs
+        pserver_program._slice_vars_and_attrs = self._get_slice_vars_and_attrs(
+            endpoint)
+
         pserver_program._sync_with_cpp()
         return pserver_program
 
@@ -689,8 +702,31 @@ class DistributeTranspiler(object):
                     inputs=new_inputs,
                     outputs=new_outputs,
                     attrs=op.all_attrs())
+
+        # add slice vars
+        s_prog._slice_vars_and_attrs = self._get_slice_vars_and_attrs(endpoint)
+
         return s_prog
 
+    def _get_slice_vars_and_attrs(self, endpoint):
+        slice_vars_and_attrs = []
+        block_suffix = "block"
+        for param in self.param_grad_ep_mapping[endpoint]["params"]:
+            orig_var_name, block_name, _ = self._get_varname_parts(param.name)
+            if not block_name:
+                continue
+
+            block_idx = int(block_name.split(block_suffix)[1])
+            orig_var = self.origin_program.global_block().vars[orig_var_name]
+
+            skip_numel = 0
+            slice_vars = self.param_var_mapping[orig_var_name]
+            for slice_var in slice_vars[:block_idx]:
+                skip_numel += reduce(lambda x, y: x * y, slice_var.shape)
+            slice_vars_and_attrs.append([orig_var, skip_numel, param])
+
+        return slice_vars_and_attrs
+
     # ====================== private transpiler functions =====================
 
     def _has_distributed_lookup_table(self):

python/paddle/fluid/transpiler/inference_transpiler.py

@@ -59,8 +59,12 @@ class InferenceTranspiler(object):
             scope = global_scope()
         if not isinstance(scope, core.Scope):
             raise TypeError("scope should be as Scope type or None")
-        self._fuse_batch_norm(program, place, scope)
+        use_mkldnn = bool(os.getenv("FLAGS_use_mkldnn", False))
+        if use_mkldnn:
             self._fuse_relu_mkldnn(program)
+            self._fuse_conv_bias_mkldnn(program)
+        else:
+            self._fuse_batch_norm(program, place, scope)
 
     def _fuse_relu_mkldnn(self, program):
         '''
@@ -82,10 +86,6 @@ class InferenceTranspiler(object):
         :param program: program to transpile
         :type program: Program
         '''
-        use_mkldnn = bool(os.getenv("FLAGS_use_mkldnn", False))
-        if not use_mkldnn:
-            return
-
         self.block = program.block(0)
 
         i = 0
@@ -106,6 +106,69 @@ class InferenceTranspiler(object):
         # And a better solution will be considered later.
         program = program.clone()
 
+    def _fuse_conv_bias_mkldnn(self, program):
+        '''
+        Transpile the program by fused convolution and elementwise_add.
+
+        Replace conv2d and elementwise_add ops with a new conv2d op
+        based on an old conv2d op and the :math:`Bias` taken from
+        elementwise_add.
+
+        For input :math:`X`:
+
+        - Conv process:            :math:`X = input * W`
+        - Elementwise_add process: :math` X = X + bias`
+
+        After fuse into one operation:
+
+        .. math::
+
+            X = input * W + bias
+
+        The operator transformation is:
+
+        - before:
+
+          - conv->elementwise_add->any_other_op
+
+        - after:
+
+          - conv->any_other_op
+
+        The transpile stages are:
+
+        1. Extract bias and output variables from elementwise_add.
+        2. Extract Input, Weight and attributes from conv op.
+        3. Create a new convolution op based on extracted params.
+        4. Remove old conv op.
+        5. Remove elementwise_add.
+        5. Remove unused variables.
+
+        Args:
+            program (Program): program to transpile
+
+        '''
+        self.block = program.block(0)
+
+        i = 0
+        while i < len(self.block.ops) - 2:
+            current_op = self.block.ops[i]
+            next_op = self.block.ops[i + 1]
+            # conv2d with bias
+            if current_op.type in ['conv2d'] and \
+               next_op.type in ['elementwise_add']:
+                self._fuse_conv_bias(i, current_op, next_op)
+                self.block._remove_op(i + 1)  # Remove old conv
+                self.block._remove_op(i + 1)  # Remove elementwise_add
+                i = i + 1
+            i = i + 1
+
+        self._remove_unused_var()
+        # TODO(luotao): use clone() method to flush the program.desc in force,
+        # since some large program.desc will not be flushed immediately.
+        # And a better solution will be considered later.
+        program = program.clone()
+
     def _fuse_batch_norm(self, program, place, scope):
         '''
         Transpile the program by fused batch normalization.
@@ -185,7 +248,6 @@ class InferenceTranspiler(object):
                         self.block._remove_op(i + 2)
                         i = i + 1
             i = i + 1
-
         self._adjust_input()
         self._remove_unused_var()
         # TODO(luotao): use clone() method to flush the program.desc in force,
@@ -288,6 +350,33 @@ class InferenceTranspiler(object):
         # collect the renamed input
         self.input_map[bn_op.output("Y")[0]] = bias_op.output("Out")[0]
 
+    def _fuse_conv_bias(self, index, conv_op, elementwise_add_op):
+        '''
+        fuse the conv op with elementwise_add
+
+        :param index: index of the conv_op in ops list
+        :type index: Int
+        :param conv_op: convolution operator
+        :type conv_op: Operator
+        :param elementwise_add_op: convolution's bias operator
+        :type elementwise_add_op: Operator
+        '''
+
+        bias_var = self.block.var(elementwise_add_op.input("Y")[0])
+        out_var = self.block.var(elementwise_add_op.output("Out")[0])
+        filter_var = self.block.var(conv_op.input("Filter")[0])
+        in_var = self.block.var(conv_op.input("Input")[0])
+        attrs = {name: conv_op.attr(name) for name in conv_op.attr_names}
+
+        self.block._insert_op(
+            index,
+            type="conv2d",
+            inputs={"Input": in_var,
+                    "Filter": filter_var,
+                    "Bias": bias_var},
+            outputs={"Output": out_var},
+            attrs=attrs)
+
     def _adjust_input(self):
         for i in range(len(self.block.ops)):
             current_op = self.block.ops[i]