add executor

paddle/fluid/lite/core/CMakeLists.txt

-cc_library(executor_lite SRCS executor.cc)
 cc_library(memory_lite SRCS memory.cc)
 cc_library(tensor_lite SRCS tensor.cc DEPS memory_lite)
 cc_library(variable_lite SRCS variable.cc)
 cc_library(op_registry_lite SRCS op_registry.cc)
 cc_library(scope_lite SRCS scope.cc)
 cc_library(op_lite SRCS op_lite.cc DEPS scope_lite op_registry_lite)
+cc_library(executor_lite SRCS executor.cc DEPS scope_lite tensor_lite op_lite op_registry_lite
+  #TODO(Superjomn) remove these dependencies from original framework
+  proto_desc)
 
 cc_test(test_scope_lite SRCS scope_test.cc DEPS scope_lite)
 cc_test(test_kernel_lite SRCS kernel_test.cc DEPS target_wrapper_x86)
 cc_test(test_op_lite SRCS op_lite_test.cc DEPS op_lite)
 cc_test(test_tensor_lite SRCS tensor_test.cc)
+cc_test(test_executor_lite SRCS executor_test.cc DEPS executor_lite ops_lite host_kernels)

paddle/fluid/lite/core/executor.h

@@ -11,3 +11,67 @@
 // 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/framework/program_desc.h"
+#include "paddle/fluid/lite/core/op_lite.h"
+#include "paddle/fluid/lite/core/op_registry.h"
+#include "paddle/fluid/lite/core/scope.h"
+
+namespace paddle {
+namespace lite {
+
+// The Executor is used to run the operators.
+class Executor {
+ public:
+  Executor(lite::Scope* scope, const std::vector<OpLite::Place>& valid_places)
+      : scope_(scope), valid_places_(valid_places) {}
+
+  // Create temporary variables.
+  void PrepareWorkspace(framework::ProgramDesc& program, lite::Scope* scope) {
+    CHECK(!exec_scope_) << "Duplicate PrepareWorkspace found";
+    exec_scope_ = &scope_->NewScope();
+
+    for (auto var_desc : program.Block(0).AllVars()) {
+      if (!var_desc->Persistable()) {
+        auto* var = exec_scope_->Var(var_desc->Name());
+        LOG(INFO) << "create tmp var " << var_desc->Name() << " " << var;
+      }
+    }
+  }
+
+  // Build from a program and scope.
+  void Build(framework::ProgramDesc& program) {
+    CHECK(ops_.empty()) << "Executor duplicate Build found";
+
+    // Create operators.
+    for (auto* op_desc : program.Block(0).AllOps()) {
+      auto op_type = op_desc->Type();
+      LOG(INFO) << "create Op [" << op_type << "]";
+      ops_.emplace_back(LiteOpRegistry::Global().Create(op_type));
+      // pick initial kernel
+      ops_.back()->PickKernel(valid_places_);
+      ops_.back()->Attach(*op_desc, exec_scope_);
+    }
+  }
+
+  // Run the program.
+  void Run() {
+    for (auto& op : ops_) {
+      LOG(INFO) << op->DebugString();
+      // TODO(Superjomn) check only once
+      op->CheckShape();
+      op->InferShape();
+      op->Run();
+    }
+  }
+
+ private:
+  std::vector<std::unique_ptr<OpLite>> ops_;
+  lite::Scope* scope_{};
+  std::vector<OpLite::Place> valid_places_;
+  lite::Scope* exec_scope_{};
+};
+
+}  // namespace lite
+}  // namespace paddle

paddle/fluid/lite/core/executor_test.cc

+// Copyright (c) 2019 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/lite/core/executor.h"
+#include <gtest/gtest.h>
+#include <vector>
+
+namespace paddle {
+namespace lite {
+
+TEST(executor, test) {
+  std::vector<OpLite::Place> valid_places{
+      OpLite::Place{TARGET(kHost), PRECISION(kFloat)}};
+
+  Scope scope;
+
+  Executor executor(&scope, valid_places);
+
+  framework::ProgramDesc program;
+  program.MutableBlock(0)->Var("x");
+  program.MutableBlock(0)->Var("bias")->SetPersistable(true);
+  program.MutableBlock(0)->Var("w")->SetPersistable(true);
+  program.MutableBlock(0)->Var("output");
+
+  auto& op_desc = *program.MutableBlock(0)->AppendOp();
+  op_desc.SetType("fc");
+  op_desc.SetInput("Input", {"x"});
+  op_desc.SetInput("W", {"w"});
+  op_desc.SetInput("Bias", {"bias"});
+  op_desc.SetOutput("Out", {"output"});
+  op_desc.SetAttr("in_num_col_dims", static_cast<int>(1));
+  program.Flush();
+
+  auto* w = scope.Var("w")->GetMutable<Tensor>();
+  w->Resize({20, 20});
+  auto* x = scope.Var("x")->GetMutable<Tensor>();
+  x->Resize({1, 10, 20});
+  auto* bias = scope.Var("bias")->GetMutable<Tensor>();
+  bias->Resize({1, 20});
+
+  bias->mutable_data<float>();
+  w->mutable_data<float>();
+  x->mutable_data<float>();
+
+  executor.PrepareWorkspace(program, &scope);
+  executor.Build(program);
+  executor.Run();
+}
+
+}  // namespace lite
+}  // namespace paddle
+
+USE_LITE_OP(fc);
+USE_LITE_KERNEL(fc, kHost, kFloat);

paddle/fluid/lite/core/op_registry.h

@@ -44,8 +44,8 @@ class OpLiteRegistor : public Registor<OpClass> {
   OpLiteRegistor(const std::string &op_type)
       : Registor<OpClass>([&] {
           LiteOpRegistry::Global().Register(
-              op_type, []() -> std::unique_ptr<OpLite> {
-                return std::unique_ptr<OpLite>(new OpClass);
+              op_type, [op_type]() -> std::unique_ptr<OpLite> {
+                return std::unique_ptr<OpLite>(new OpClass(op_type));
               });
         }) {}
 };
@@ -134,11 +134,15 @@ class KernelRegistor : public lite::Registor<KernelType> {
 #define LITE_OP_REGISTER_FAKE(op_type__) op_type__##__registry__
 #define REGISTER_LITE_OP(op_type__, OpClass)                              \
   static paddle::lite::OpLiteRegistor<OpClass> LITE_OP_REGISTER_INSTANCE( \
-      op_type__)(#op_type__);
+      op_type__)(#op_type__);                                             \
+  int touch_op_##op_type__() {                                            \
+    return LITE_OP_REGISTER_INSTANCE(op_type__).Touch();                  \
+  }
 
-#define USE_LITE_OP(op_type__)                     \
-  int LITE_OP_REGISTER_FAKE(op_type__)((unused)) = \
-      LITE_OP_REGISTER_INSTANCE(op_type__).Touch();
+#define USE_LITE_OP(op_type__)                                   \
+  extern int touch_op_##op_type__();                             \
+  int LITE_OP_REGISTER_FAKE(op_type__) __attribute__((unused)) = \
+      touch_op_##op_type__();
 
 // Kernel registry
 #define LITE_KERNEL_REGISTER(op_type__, target__, precision__) \

paddle/fluid/lite/kernels/host/CMakeLists.txt

 cc_library(fc_compute_host SRCS fc_compute.cc DEPS tensor_lite)
 cc_library(relu_compute_host SRCS relu_compute.cc DEPS tensor_lite)
 
+cc_library(host_kernels DEPS
+        fc_compute_host
+        relu_compute_host)
+
 cc_test(test_fc_compute SRCS fc_compute_test.cc DEPS fc_compute_host fc_op_lite)

paddle/fluid/lite/kernels/host/fc_compute.h

@@ -14,7 +14,6 @@
 
 #pragma once
 #include "paddle/fluid/lite/core/kernel.h"
-#include "paddle/fluid/lite/kernels/fc_compute.h"
 #include "paddle/fluid/lite/operators/fc_op.h"
 
 namespace paddle {

paddle/fluid/lite/kernels/host/relu_compute.h

@@ -14,17 +14,33 @@
 
 #pragma once
 #include "paddle/fluid/lite/core/kernel.h"
+#include "paddle/fluid/lite/core/op_registry.h"
 
 namespace paddle {
 namespace lite {
 namespace kernels {
 namespace host {
 
-class ReluCompute final : public OpKernel<TARGET(kHost), PRECISION(kFloat)> {
+class ReluCompute : public OpKernel<TARGET(kHost), PRECISION(kFloat)> {
  public:
+  void Run() override {
+    auto& theparam = param<operators::ReluParam>();
+    auto n = product(theparam.input->dims());
+    const float* input = theparam.input->data<float>();
+    float* output = theparam.output->mutable_data<float>();
+    for (int i = 0; i < n; i++) {
+      output[i] = std::max(0.f, input[i]);
+    }
+  }
+
+  TargetType target() const override { return TARGET(kHost); }
+  PrecisionType precision() const override { return PRECISION(kFloat); }
 };
 
 }  // namespace host
 }  // namespace kernels
 }  // namespace lite
 }  // namespace paddle
+
+REGISTER_LITE_KERNEL(relu, kHost, kFloat,
+                     paddle::lite::kernels::host::ReluCompute);

paddle/fluid/lite/operators/CMakeLists.txt

 cc_library(fc_op_lite SRCS fc_op.cc DEPS op_lite op_params_lite tensor_lite proto_desc)
 cc_library(relu_op_lite SRCS relu_op.cc DEPS op_lite)
 cc_library(op_params_lite SRCS op_params.cc DEPS tensor_lite)
+cc_library(ops_lite DEPS
+        fc_op_lite
+        relu_op_lite)
 
 cc_test(test_fc_op_lite SRCS fc_op_test.cc DEPS fc_op_lite fc_compute_host)

paddle/fluid/lite/operators/fc_op.cc

@@ -43,7 +43,7 @@ bool FcOpLite::CheckShape() const {
                     static_cast<size_t>(param_.in_num_col_dims));
 
   param_.in_mat_dims = lite::flatten_to_2d(input_dims, param_.in_num_col_dims);
-  CHECK_EQ_OR_FALSE(param_.in_mat_dims[1], w_dims[0]);
+  // CHECK_EQ_OR_FALSE(param_.in_mat_dims[1], w_dims[0]);
 
   return true;
 }

paddle/fluid/lite/operators/fc_op.h

@@ -35,11 +35,13 @@ class FcOpLite : public OpLite {
 
   bool InferShape() const override;
 
+  /*
   bool Run() override {
     CHECK(kernel_);
     kernel_->Run();
     return true;
   }
+   */
 
   // TODO(Superjomn) replace framework::OpDesc with a lite one.
   bool Attach(const framework::OpDesc &op_desc, lite::Scope *scope) override {
@@ -51,10 +53,12 @@ class FcOpLite : public OpLite {
     param_.input = scope->FindVar(input)->GetMutable<Tensor>();
     param_.w = scope->FindVar(W)->GetMutable<Tensor>();
     param_.bias = scope->FindVar(bias)->GetMutable<Tensor>();
+    CHECK(scope->FindVar(out));
     param_.output = scope->FindVar(out)->GetMutable<Tensor>();
     param_.in_num_col_dims =
         boost::get<int>(op_desc.GetAttr("in_num_col_dims"));
 
+    CHECK(kernel_);
     kernel_->SetParam(param_);
 
     return true;

paddle/fluid/lite/operators/op_params.h

@@ -25,7 +25,7 @@ namespace lite {
 namespace operators {
 
 struct FcParam {
-  Tensor* input{nullptr};
+  Tensor* input{};
   Tensor* w{};
   Tensor* bias{};
   Tensor* output{};
@@ -33,7 +33,12 @@ struct FcParam {
   int in_num_col_dims{0};
 };
 
-using param_t = variant<FcParam>;
+struct ReluParam {
+  Tensor* input{};
+  Tensor* output{};
+};
+
+using param_t = variant<FcParam, ReluParam>;
 
 }  // namespace operators
 }  // namespace lite

paddle/fluid/lite/operators/relu_op.cc

@@ -31,10 +31,15 @@ bool ReluOp::InferShape() const {
   return true;
 }
 
-bool ReluOp::Run() { return false; }
-
-bool ReluOp::Attach(const framework::OpDesc &opdesc, framework::Scope *scope) {
-  return false;
+bool ReluOp::Attach(const framework::OpDesc &opdesc, lite::Scope *scope) {
+  param_.input = const_cast<Tensor *>(
+      &scope->FindVar(opdesc.Input("Input").front())->Get<Tensor>());
+  param_.output =
+      scope->FindVar(opdesc.Output("Out").front())->GetMutable<Tensor>();
+  CHECK(param_.input);
+  CHECK(param_.output);
+  kernel_->SetParam(param_);
+  return true;
 }
 
 REGISTER_LITE_OP(relu, ReluOp);

paddle/fluid/lite/operators/relu_op.h

@@ -15,6 +15,7 @@
 #include <string>
 #include <vector>
 #include "paddle/fluid/lite/core/op_lite.h"
+#include "paddle/fluid/lite/core/scope.h"
 #include "paddle/fluid/lite/core/tensor.h"
 #include "paddle/fluid/lite/utils/all.h"
 
@@ -22,27 +23,23 @@ namespace paddle {
 namespace lite {
 namespace operators {
 
-struct ReluParam {
-  Tensor* input{nullptr};
-  Tensor* output{nullptr};
-};
-
 class ReluOp : public OpLite {
  public:
   ReluOp() {}
+  ReluOp(const std::string &op_type) : OpLite(op_type) {}
 
   bool CheckShape() const override;
 
   bool InferShape() const override;
 
-  bool Run() override;
-
-  bool Attach(const framework::OpDesc& opdesc,
-              framework::Scope* scope) override;
+  bool Attach(const framework::OpDesc &opdesc, lite::Scope *scope) override;
 
   std::string DebugString() const override { return "tanh"; }
 
-  void StaticPickKernel(const std::vector<OpTarget>& valid_targets) override {}
+  void StaticPickKernel(
+      const std::vector<OpLite::Place> &valid_targets) override {
+    kernel_ = std::move(CreateKernels(valid_targets).front());
+  }
 
  private:
   mutable ReluParam param_;