Add convolution Function

paddle/function/CMakeLists.txt

@@ -14,8 +14,8 @@ add_library(paddle_function STATIC ${cpp_files} ${cu_objs})
 add_dependencies(paddle_function ${external_project_dependencies})
 add_dependencies(paddle_function gen_proto_cpp)
 
-if(WITH_GPU)
 if(WITH_TESTING)
+if(WITH_GPU)
     # TODO:
     # file(GLOB test_files . *OpTest.cpp)
     # add_executable(${test_bin} EXCLUDE_FROM_ALL ${test_files})
@@ -30,6 +30,8 @@ if(WITH_TESTING)
     add_simple_unittest(CosSimOpTest)
     add_simple_unittest(RowConvOpTest)
 endif()
+
+add_simple_unittest(ConvOpTest)
 endif()
 
 add_style_check_target(paddle_function ${h_files})

paddle/function/ContextProjectionOpTest.cpp

@@ -28,7 +28,7 @@ void testMatrixProjectionForward(int context_start,
                std::max(0, (int)(context_start + context_length - 1));
   if (pad == 0) is_padding = false;
 
-  FunctionCompare test(
+  CpuGpuFuncCompare test(
       "ContextProjectionForward",
       FuncConfig()
           .set("context_length", context_length)
@@ -60,7 +60,7 @@ void testMatrixProjectionBackward(int context_start,
                std::max(0, (int)(context_start + context_length - 1));
   if (pad == 0) is_padding = false;
 
-  FunctionCompare test(
+  CpuGpuFuncCompare test(
       "ContextProjectionBackward",
       FuncConfig()
           .set("context_length", context_length)

paddle/function/ConvOp.h

@@ -0,0 +1,146 @@
+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+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 "Function.h"
+
+namespace paddle {
+
+/*
+ * \brief Based on the ConvFunctionBase class, the forward calculation,
+ *        backward input calculation and backward filter calculation
+ *        of convolution operations can be implemented.
+ *
+ * Arguments of forward and backward calculation:
+ *   1. Forward calculation of convolution.
+ *      inputs = {INPUT, FILTER}, outputs = {OUTPUT}
+ *      The first and second input arguments are input image and filter data.
+ *      The output argument is output image.
+ *
+ *   2. Backward input calculation of convolution.
+ *      inputs = {OUTPUT_GRAD, FILTER}, outputs = {INPUT_GRAD}
+ *      The first and second input arguments are output grad image
+ *      and filter data.
+ *      The output argument is input grad image.
+ *
+ *   3. Backward filter calculation of convolution.
+ *      inputs = {OUTPUT_GRAD, INPUT}, outputs = {FILTER_GRAD}
+ *      The first and second input arguments are output grad image
+ *      and input image.
+ *      The output argument is filter grad.
+ *
+ * Arguments format of input, filter and output:
+ *   1. Input image, output image, input image gradient, output image gradient
+ *      are all NCHW format. Where N is batch size, C is the number of channels,
+ *      H and W is the height and width of image or image gradient.
+ *
+ *   2. The format of the filter data is MCHW, where M is the number of output
+ *      image channels, C is the number of input image channels,
+ *      H and W is height and width of filter.
+ *
+ *      If `groups` is greater than 1, the filter's data format should be GMCHW,
+ *      where G is the `groups`, and G * M is the number of output image
+ *      channels, G * C is the number of input image channels,
+ *      H and W is height and width of filter.
+ */
+class ConvFunctionBase : public FunctionBase {
+public:
+  void init(const FuncConfig& config) override {
+    // function arguments
+    strides_ = config.get<std::vector<size_t>>("strides");
+    paddings_ = config.get<std::vector<size_t>>("paddings");
+    groups_ = config.get<size_t>("groups");
+
+    // number of inputs and outputs
+    numInputs_ = 2;
+    numOutputs_ = 1;
+  }
+
+  virtual void calc(const BufferArgs& inputs, const BufferArgs& outputs) {}
+
+  // input can be INPUT and INPUT_GRAD
+  // filter can be FILTER and FILTER_GRAD
+  // output can be OUTPUT and OUTPUT_GRAD
+  void check(const TensorShape& input,
+             const TensorShape& filter,
+             const TensorShape& output) {
+    // inputs and outputs arguments should be 4-dimensional.
+    CHECK_EQ(input.ndims(), (size_t)4);
+    CHECK_EQ(output.ndims(), (size_t)4);
+    // The batchSize of the input needs to be equal to
+    // the batchSize of the output.
+    CHECK_EQ(input[0], output[0]);
+
+    if (filter.ndims() == (size_t)4) {
+      // If the filter's dimension is 4, groups convolution is not supported.
+      CHECK_EQ(groups_, (size_t)1);
+      // The input and output channel dimensions are the second and first
+      // dimensions of the filter shape.
+      CHECK_EQ(input[1], filter[1]);
+      CHECK_EQ(output[1], filter[0]);
+    } else {
+      // filter argument should be 5-dimensional.
+      CHECK_EQ(filter.ndims(), (size_t)5);
+      // The first dimension of the filter is the size of the group
+      CHECK_EQ(filter[0], groups_);
+      // The input and output channel dimensions are the third and second
+      // dimensions of the filter shape.
+      CHECK_EQ(input[1], filter[2] * groups_);
+      CHECK_EQ(output[1], filter[1] * groups_);
+    }
+  }
+
+protected:
+  size_t getFilterHeight(const TensorShape& filter) const {
+    return filter[filter.ndims() - 2];
+  }
+
+  size_t getFilterWidth(const TensorShape& filter) const {
+    return filter[filter.ndims() - 1];
+  }
+
+  std::vector<size_t> strides_;
+  std::vector<size_t> paddings_;
+
+  /// Group size, refer to grouped convolution in
+  /// Alex Krizhevsky's paper: when group=2, the first half of the
+  /// filters are only connected to the first half of the input channels,
+  /// and the second half only connected to the second half.
+  size_t groups_;
+
+  inline int strideH() const { return strides_[0]; }
+
+  inline int strideW() const { return strides_[1]; }
+
+  inline int paddingH() const { return paddings_[0]; }
+
+  inline int paddingW() const { return paddings_[1]; }
+
+  // A temporary memory in convolution calculation.
+  MemoryHandlePtr memory_;
+
+  template <DeviceType Device>
+  void resizeBuffer(size_t newSize) {
+    if (!memory_ || newSize * sizeof(real) > memory_->getAllocSize()) {
+      if (Device == DEVICE_TYPE_CPU) {
+        memory_ = std::make_shared<CpuMemoryHandle>(newSize * sizeof(real));
+      } else {
+        memory_ = std::make_shared<GpuMemoryHandle>(newSize * sizeof(real));
+      }
+    }
+  }
+};
+
+}  // namespace paddle

paddle/function/ConvOpTest.cpp

@@ -0,0 +1,210 @@
+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+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 <gtest/gtest.h>
+#include <memory>
+#include "Function.h"
+#include "FunctionTest.h"
+
+namespace paddle {
+
+enum TestType {
+  kForwardTest = 0,
+  kBackwardInputTest = 1,
+  kBackwardFilterTest = 2,
+};
+
+template <DeviceType DType1, DeviceType DType2>
+class ConvolutionTest {
+public:
+  ConvolutionTest(const std::string& conv1,
+                  const std::string& conv2,
+                  TestType type,
+                  std::string algo = "auto") {
+    for (size_t batchSize : {1, 32}) {
+      for (size_t inputSize : {7, 14, 54}) {
+        for (size_t filterSize : {1, 3, 5}) {
+          for (size_t inputChannels : {3, 64}) {
+            for (size_t outputChannels : {3, 64, 128}) {
+              if (inputChannels < outputChannels) break;
+              for (size_t stride : {1, 2}) {
+                for (size_t padding : {0, 1}) {
+                  if (padding >= filterSize) break;
+                  size_t outputSize =
+                      (inputSize - filterSize + 2 * padding + stride) / stride;
+                  VLOG(3) << " batchSize=" << batchSize
+                          << " inputChannels=" << inputChannels
+                          << " inputHeight=" << inputSize
+                          << " inputWidth=" << inputSize
+                          << " outputChannels=" << outputChannels
+                          << " filterHeight=" << filterSize
+                          << " filterWidth=" << filterSize
+                          << " outputHeight=" << outputSize
+                          << " outputWidth=" << outputSize
+                          << " stride=" << stride << " padding=" << padding;
+
+                  std::vector<size_t> paddings = {padding, padding};
+                  std::vector<size_t> strides = {stride, stride};
+                  Compare2Function<DType1, DType2> test(
+                      conv1,
+                      conv2,
+                      FuncConfig()
+                          .set("paddings", paddings)
+                          .set("strides", strides)
+                          .set("groups", (size_t)1)
+                          .set("algo", algo));
+
+                  TensorShape input{
+                      batchSize, inputChannels, inputSize, inputSize};
+                  TensorShape filter{
+                      outputChannels, inputChannels, filterSize, filterSize};
+                  TensorShape output{
+                      batchSize, outputChannels, outputSize, outputSize};
+
+                  if (type == kForwardTest) {
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, input));
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, filter));
+                    test.addOutputs(BufferArg(VALUE_TYPE_FLOAT, output));
+                    test.run();
+                  } else if (type == kBackwardInputTest) {
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, output));
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, filter));
+                    test.addOutputs(BufferArg(VALUE_TYPE_FLOAT, input), ADD_TO);
+                    test.run();
+                  } else if (type == kBackwardFilterTest) {
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, output));
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, input));
+                    test.addOutputs(BufferArg(VALUE_TYPE_FLOAT, filter));
+                    test.run();
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+};
+
+// Mainly used to test cases where the height and width (input, filter)
+// are not equal.
+template <DeviceType DType1, DeviceType DType2>
+class ConvolutionTest2 {
+public:
+  ConvolutionTest2(const std::string& conv1,
+                   const std::string& conv2,
+                   TestType type,
+                   std::string algo = "auto") {
+    for (size_t batchSize : {16}) {
+      for (size_t inputHeight : {7, 31}) {
+        for (size_t inputWidth : {10, 54}) {
+          for (size_t filterHeight : {1, 5}) {
+            for (size_t filterWidth : {3, 7}) {
+              for (size_t inputChannels : {7}) {
+                for (size_t outputChannels : {32}) {
+                  size_t stride = 1;
+                  size_t padding = 0;
+                  size_t outputHeight =
+                      (inputHeight - filterHeight + 2 * padding + stride) /
+                      stride;
+                  size_t outputWidth =
+                      (inputWidth - filterWidth + 2 * padding + stride) /
+                      stride;
+                  VLOG(3) << " batchSize=" << batchSize
+                          << " inputChannels=" << inputChannels
+                          << " inputHeight=" << inputHeight
+                          << " inputWidth=" << inputWidth
+                          << " outputChannels=" << outputChannels
+                          << " filterHeight=" << filterHeight
+                          << " filterWidth=" << filterWidth
+                          << " outputHeight=" << outputHeight
+                          << " outputWidth=" << outputWidth
+                          << " stride=" << stride << " padding=" << padding;
+
+                  std::vector<size_t> paddings = {padding, padding};
+                  std::vector<size_t> strides = {stride, stride};
+                  Compare2Function<DType1, DType2> test(
+                      conv1,
+                      conv2,
+                      FuncConfig()
+                          .set("paddings", paddings)
+                          .set("strides", strides)
+                          .set("groups", (size_t)1)
+                          .set("algo", algo));
+
+                  TensorShape input{
+                      batchSize, inputChannels, inputHeight, inputWidth};
+                  TensorShape filter{
+                      outputChannels, inputChannels, filterHeight, filterWidth};
+                  TensorShape output{
+                      batchSize, outputChannels, outputHeight, outputWidth};
+
+                  if (type == kForwardTest) {
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, input));
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, filter));
+                    test.addOutputs(BufferArg(VALUE_TYPE_FLOAT, output));
+                    test.run();
+                  } else if (type == kBackwardInputTest) {
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, output));
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, filter));
+                    test.addOutputs(BufferArg(VALUE_TYPE_FLOAT, input), ADD_TO);
+                    test.run();
+                  } else if (type == kBackwardFilterTest) {
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, output));
+                    test.addInputs(BufferArg(VALUE_TYPE_FLOAT, input));
+                    test.addOutputs(BufferArg(VALUE_TYPE_FLOAT, filter));
+                    test.run();
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+};
+
+TEST(Forward, GEMM) {
+  ConvolutionTest<DEVICE_TYPE_CPU, DEVICE_TYPE_CPU> test(
+      "NaiveConv-CPU", "GemmConv-CPU", kForwardTest);
+  ConvolutionTest2<DEVICE_TYPE_CPU, DEVICE_TYPE_CPU> test2(
+      "NaiveConv-CPU", "GemmConv-CPU", kForwardTest);
+}
+
+#ifndef PADDLE_ONLY_CPU
+TEST(Forward, GEMM2) {
+  ConvolutionTest<DEVICE_TYPE_CPU, DEVICE_TYPE_GPU> test(
+      "GemmConv-CPU", "GemmConv-GPU", kForwardTest);
+  ConvolutionTest2<DEVICE_TYPE_CPU, DEVICE_TYPE_GPU> test2(
+      "GemmConv-CPU", "GemmConv-GPU", kForwardTest);
+}
+
+TEST(BackwardInput, GEMM) {
+  ConvolutionTest<DEVICE_TYPE_CPU, DEVICE_TYPE_GPU> test(
+      "GemmConvGradInput-CPU", "GemmConvGradInput-GPU", kBackwardInputTest);
+  ConvolutionTest2<DEVICE_TYPE_CPU, DEVICE_TYPE_GPU> test2(
+      "GemmConvGradInput-CPU", "GemmConvGradInput-GPU", kBackwardInputTest);
+}
+
+TEST(BackwardFilter, GEMM) {
+  ConvolutionTest<DEVICE_TYPE_CPU, DEVICE_TYPE_GPU> test(
+      "GemmConvGradFilter-CPU", "GemmConvGradFilter-GPU", kBackwardFilterTest);
+  ConvolutionTest2<DEVICE_TYPE_CPU, DEVICE_TYPE_GPU> test2(
+      "GemmConvGradFilter-CPU", "GemmConvGradFilter-GPU", kBackwardFilterTest);
+}
+#endif
+
+}  // namespace paddle