Rename PlainNet --> NetOp

paddle/framework/CMakeLists.txt

@@ -29,7 +29,5 @@ py_proto_compile(framework_py_proto SRCS attr_type.proto op_proto.proto op_desc.
 add_custom_target(framework_py_proto_init ALL COMMAND ${CMAKE_COMMAND} -E touch __init__.py)
 add_dependencies(framework_py_proto framework_py_proto_init)
 
-proto_library(net_proto SRCS net_proto.proto DEPS op_proto)
-# cc_library(net SRCS net.cc DEPS operator net_proto op_registry fc_op)
-cc_library(net SRCS net.cc DEPS operator net_proto op_registry)
+cc_library(net SRCS net.cc DEPS op_registry)
 cc_test(net_op_test SRCS net_op_test.cc DEPS net add_op mul_op sigmoid_op softmax_op fc_op)

paddle/framework/net.cc

@@ -20,17 +20,7 @@
 namespace paddle {
 namespace framework {
 
-std::shared_ptr<PlainNet> AddBackwardOp(std::shared_ptr<PlainNet> ForwardOps) {
-  auto grad_ops = std::make_shared<PlainNet>();
-  for (auto& op : ForwardOps->ops_) {
-    auto op_grad = OpRegistry::CreateGradOp(op);
-    grad_ops->AddOp(op_grad);
-  }
-  grad_ops->CompleteAddOp();
-  return grad_ops;
-}
-
-void PlainNet::CompleteAddOp(bool calc) {
+void NetOp::CompleteAddOp(bool calc) {
   add_op_done_ = true;
   if (!calc) return;
   std::unordered_set<std::string> input_set;
@@ -70,7 +60,7 @@ void PlainNet::CompleteAddOp(bool calc) {
   attrs_["temporary_index"] = tmp_index;
 }
 
-std::string PlainNet::DebugString() const {
+std::string NetOp::DebugString() const {
   std::ostringstream os;
   os << OperatorBase::DebugString() << std::endl;
   for (auto& op : ops_) {
@@ -82,5 +72,7 @@ std::string PlainNet::DebugString() const {
   return os.str();
 }
 
+bool NetOp::IsNetOp() const { return true; }
+
 }  // namespace framework
 }  // namespace paddle

paddle/framework/net.h

@@ -37,21 +37,7 @@ namespace framework {
  * This is the base class of network, all the networks should implement the APIs
  * it defines.
  */
-class Net : public OperatorBase {
- public:
-  virtual void AddOp(const std::shared_ptr<OperatorBase>& op) = 0;
-  virtual void CompleteAddOp(bool calc) = 0;
-};
-
-using NetPtr = std::shared_ptr<Net>;
-
-/**
- * @brief a basic implementation of Net.
- *
- * PlainNet is a very simple Net, it create a list of operators, and run them
- * sequentially following the order they added.
- */
-class PlainNet : public Net {
+class NetOp : public OperatorBase {
  public:
   /**
    * Infer all the operators' input and output variables' shapes, will be called
@@ -80,15 +66,17 @@ class PlainNet : public Net {
   /**
    * @brief Add an operator by ptr
    */
-  void AddOp(const std::shared_ptr<OperatorBase>& op) override {
+  void AddOp(const std::shared_ptr<OperatorBase>& op) {
     PADDLE_ENFORCE(!add_op_done_, "Cannot AddOp when this network is sealed");
     ops_.push_back(op);
   }
 
-  void CompleteAddOp(bool calculate = true) override;
+  void CompleteAddOp(bool calculate = true);
 
   std::string DebugString() const override;
 
+  bool IsNetOp() const override;
+
   std::vector<std::shared_ptr<OperatorBase>> ops_;
 
  private:
@@ -100,7 +88,5 @@ class PlainNet : public Net {
   }
 };
 
-std::shared_ptr<PlainNet> AddBackwardOp(std::shared_ptr<PlainNet> ForwardOps);
-
 }  // namespace framework
 }  // namespace paddle

paddle/framework/net_op_test.cc

@@ -40,7 +40,7 @@ void AssertSameVectorWithoutOrder(const std::vector<T>& expected,
 }
 
 TEST(OpKernel, all) {
-  auto net = std::make_shared<PlainNet>();
+  auto net = std::make_shared<NetOp>();
   ASSERT_NE(net, nullptr);
 
   auto op1 = std::make_shared<TestOp>();
@@ -71,28 +71,21 @@ TEST(OpKernel, all) {
   ASSERT_EQ(2, run_cnt);
   ASSERT_THROW(net->AddOp(op2), paddle::platform::EnforceNotMet);
 }
-TEST(AddBackwardOp, TestGradOp) {
-  auto net = std::make_shared<PlainNet>();
-  ASSERT_NE(net, nullptr);
-  net->AddOp(framework::OpRegistry::CreateOp("mul", {"X", "Y"}, {"Out"}, {}));
-  net->AddOp(
-      framework::OpRegistry::CreateOp("add_two", {"X", "Y"}, {"Out"}, {}));
-  net->AddOp(framework::OpRegistry::CreateOp("add_two", {"X", "Y"}, {""}, {}));
-  auto grad_ops = AddBackwardOp(net);
-  for (auto& op : grad_ops->ops_) {
-    op->DebugString();
-  }
-}
 
-// TODO(zhihong): add fc grad without registering.
-// TEST(AddBackwardOp, TestNoGradOp) {
-//   auto net = std::make_shared<PlainNet>();
-//   ASSERT_NE(net, nullptr);
-//   net->AddOp(framework::OpRegistry::CreateOp("fc", {"X", "W", "b"}, {"Y"},
-//   {})); auto grad_ops = AddBackwardOp(net); for (auto& op : grad_ops->ops_) {
-//     op->DebugString();
-//   }
-// }
+//! TODO(yuyang18): Refine Backward Op.
+// TEST(AddBackwardOp, TestGradOp) {
+//  auto net = std::make_shared<NetOp>();
+//  ASSERT_NE(net, nullptr);
+//  net->AddOp(framework::OpRegistry::CreateOp("mul", {"X", "Y"}, {"Out"}, {}));
+//  net->AddOp(
+//      framework::OpRegistry::CreateOp("add_two", {"X", "Y"}, {"Out"}, {}));
+//  net->AddOp(framework::OpRegistry::CreateOp("add_two", {"X", "Y"}, {""},
+//  {}));
+//  auto grad_ops = AddBackwardOp(net);
+//  for (auto& op : grad_ops->ops_) {
+//    op->DebugString();
+//  }
+//}
 
 }  // namespace framework
 }  // namespace paddle

paddle/framework/net_proto.proto

-syntax="proto2";
-package paddle.framework;
-
-import "op_proto.proto";
-
-message NetDesc {
-  // network identification
-  optional string name = 1;
-  // operator contains in network
-  repeated OpProto operators = 2;
-  // network type to run with. e.g "plainNet", "DAG"
-  optional string net_type = 3;
-  // num worker always
-  optional int32 num_workers = 4;
-}

paddle/framework/operator.h

@@ -90,15 +90,17 @@ class OperatorBase {
   virtual void Run(const std::shared_ptr<Scope>& scope,
                    const platform::DeviceContext& dev_ctx) const = 0;
 
-  // Get a input with argument's name described in `op_proto`
+  virtual bool IsNetOp() const { return false; }
+
+  //! Get a input with argument's name described in `op_proto`
   const std::string& Input(const std::string& name) const;
-  // Get a input which has multiple variables.
-  // TODO add a vector_view to prevent memory copy.
+  //! Get a input which has multiple variables.
+  //! TODO add a vector_view to prevent memory copy.
   std::vector<std::string> Inputs(const std::string& name) const;
-  // Get a output with argument's name described in `op_proto`
+  //! Get a output with argument's name described in `op_proto`
   const std::string& Output(const std::string& name) const;
-  // Get an output which has multiple variables.
-  // TODO add a vector_view to prevent memory copy.
+  //! Get an output which has multiple variables.
+  //! TODO add a vector_view to prevent memory copy.
   std::vector<std::string> Outputs(const std::string& name) const;
 
  public:

paddle/operators/fc_op.cc

@@ -17,7 +17,7 @@
 namespace paddle {
 namespace operators {
 
-class FullyConnectedOp : public PlainNet {
+class FullyConnectedOp : public NetOp {
 public:
   void Init() override {
     AddOp(OpRegistry::CreateOp("mul",

paddle/operators/type_alias.h

@@ -43,7 +43,7 @@ using OpProto = framework::OpProto;
 using OpAttrChecker = framework::OpAttrChecker;
 using CPUPlace = platform::CPUPlace;
 using GPUPlace = platform::GPUPlace;
-using PlainNet = framework::PlainNet;
+using NetOp = framework::NetOp;
 using OpRegistry = framework::OpRegistry;
 }  // namespace operators
 }  // namespace paddle

paddle/pybind/pybind.cc

@@ -146,22 +146,22 @@ All parameter, weight, gradient are variables in Paddle.
   });
   ExposeOperator(operator_base);
 
-  using PlainNetPtr = std::shared_ptr<pd::PlainNet>;
-  py::class_<pd::PlainNet, PlainNetPtr> net(m, "Net");
+  py::class_<pd::NetOp, std::shared_ptr<pd::NetOp>> net(m, "Net");
 
   net.def_static("create",
-                 []() -> std::shared_ptr<pd::PlainNet> {
-                   auto retv = std::make_shared<pd::PlainNet>();
+                 []() -> std::shared_ptr<pd::NetOp> {
+                   auto retv = std::make_shared<pd::NetOp>();
                    retv->type_ = "plain_net";
                    return retv;
                  })
-      .def("add_op", &pd::PlainNet::AddOp)
+      .def("add_op", &pd::NetOp::AddOp)
       .def("add_op",
-           [](PlainNetPtr& self, const PlainNetPtr& net) -> void {
-             self->AddOp(std::static_pointer_cast<pd::OperatorBase>(net));
+           [](pd::NetOp& self, const std::shared_ptr<pd::NetOp>& net) -> void {
+             self.AddOp(std::static_pointer_cast<pd::OperatorBase>(net));
            })
-      .def("complete_add_op", &pd::PlainNet::CompleteAddOp)
-      .def("complete_add_op", [](PlainNetPtr& self) { self->CompleteAddOp(); });
+      .def("complete_add_op", &pd::NetOp::CompleteAddOp)
+      .def("complete_add_op",
+           [](std::shared_ptr<pd::NetOp>& self) { self->CompleteAddOp(); });
   ExposeOperator(net);
 
   m.def("unique_integer", UniqueIntegerGenerator);