Rajeev Rao
139 lines
4.7 KiB
C++
139 lines
4.7 KiB
C++
/*
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* Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TRT_GROUP_NORM_PLUGIN_H
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#define TRT_GROUP_NORM_PLUGIN_H
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#include "serialize.hpp"
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#include "plugin.h"
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#include <cudnn.h>
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#include <vector>
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#include <iostream>
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#include <string>
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// One of the preferred ways of making TensorRT to be able to see
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// our custom layer requires extending IPluginV2 and IPluginCreator classes.
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// For requirements for overriden functions, check TensorRT API docs.
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namespace nvinfer1
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{
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namespace plugin
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{
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template <typename T>
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cudaError_t scaleShiftChannelsInplace(T* inOut, const int B, const int C, const int channelVolume, const float* beta,
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const float* gamma, cudaStream_t stream);
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class GroupNormalizationPlugin final : public nvinfer1::IPluginV2DynamicExt
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{
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public:
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GroupNormalizationPlugin(float epsilon, const int nbGroups);
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GroupNormalizationPlugin(const void* data, size_t length);
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// It doesn't make sense to make GroupNormalizationPlugin without arguments, so we
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// delete default constructor.
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GroupNormalizationPlugin() = delete;
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int getNbOutputs() const noexcept override;
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// DynamicExt plugins returns DimsExprs class instead of Dims
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DimsExprs getOutputDimensions(int index, const nvinfer1::DimsExprs* inputs, int nbInputDims,
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nvinfer1::IExprBuilder& exprBuilder) noexcept override;
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int initialize() noexcept override;
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void terminate() noexcept override;
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size_t getWorkspaceSize(const nvinfer1::PluginTensorDesc* inputs, int nbInputs,
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const nvinfer1::PluginTensorDesc* outputs, int nbOutputs) const noexcept override;
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int enqueue(const nvinfer1::PluginTensorDesc* inputDesc, const nvinfer1::PluginTensorDesc* outputDesc,
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const void* const* inputs, void* const* outputs, void* workspace, cudaStream_t stream) noexcept override;
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size_t getSerializationSize() const noexcept override;
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void serialize(void* buffer) const noexcept override;
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bool supportsFormatCombination(
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int pos, const nvinfer1::PluginTensorDesc* inOut, int nbInputs, int nbOutputs) noexcept override;
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const char* getPluginType() const noexcept override;
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const char* getPluginVersion() const noexcept override;
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nvinfer1::IPluginV2DynamicExt* clone() const noexcept override;
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void destroy() noexcept override;
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DataType getOutputDataType(int index, const nvinfer1::DataType* inputTypes, int nbInputs) const noexcept override;
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void attachToContext(cudnnContext* cudnn, cublasContext* cublas, nvinfer1::IGpuAllocator* allocator) noexcept override;
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void detachFromContext() noexcept override;
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void setPluginNamespace(const char* pluginNamespace) noexcept override;
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const char* getPluginNamespace() const noexcept override;
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void configurePlugin(const nvinfer1::DynamicPluginTensorDesc* in, int nbInputs,
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const nvinfer1::DynamicPluginTensorDesc* out, int nbOutputs) noexcept override;
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private:
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const char* mPluginNamespace;
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std::string mNamespace;
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float mEpsilon;
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int mNbGroups;
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int mChannelVolume;
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cudnnHandle_t _cudnn_handle;
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cudnnTensorDescriptor_t desc, bnDesc; // describes input and output
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// These are buffers initialized to 1 and 0 respectively
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void* bnScale;
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void* bnBias;
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};
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class GroupNormalizationPluginCreator : public IPluginCreator
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{
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public:
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GroupNormalizationPluginCreator();
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~GroupNormalizationPluginCreator() override = default;
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const char* getPluginName() const noexcept override;
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const char* getPluginVersion() const noexcept override;
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const PluginFieldCollection* getFieldNames() noexcept override;
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IPluginV2DynamicExt* createPlugin(const char* name, const PluginFieldCollection* fc) noexcept override;
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IPluginV2DynamicExt* deserializePlugin(const char* name, const void* serialData, size_t serialLength) noexcept override;
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void setPluginNamespace(const char* pluginNamespace) noexcept override;
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const char* getPluginNamespace() const noexcept override;
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private:
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static PluginFieldCollection mFC;
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static std::vector<PluginField> mPluginAttributes;
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std::string mNamespace;
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};
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} // namespace plugin
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} // namespace nvinfer1
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#endif // TRT_GROUP_NORM_PLUGIN_H
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