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* SPDX-FileCopyrightText: Copyright (c) 1993-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*/
// Need 10.1 for cublasGemmStridedBatchedEx
#include <cuda.h>
#if CUDA_VERSION >= 10010
#ifndef TRT_QKV_TO_CONTEXT_PLUGIN_H
#define TRT_QKV_TO_CONTEXT_PLUGIN_H
#include "NvInferPlugin.h"
#include "common/cublasWrapper.h"
#include "mhaRunner.h"
#include "zeroPadding2d.h"
#include <math.h>
#include <string>
#include <vector>
namespace nvinfer1
{
namespace plugin
{
namespace bert
{
std::pair<int32_t, int32_t> tuneBatchedGemm(
const int32_t B, const int32_t S, const int32_t numHeads, const int32_t headSize);
template <typename T>
int32_t computeScaledSoftmax(cudaStream_t stream, const int32_t ld, const int32_t B, const int32_t N,
float const rsqrtHeadSize, T const* input, T* output);
template <typename T>
int32_t computeMaskedScaledSoftmax(cudaStream_t stream, const int32_t ld, const int32_t B, const int32_t N,
float const rsqrtHeadSize, int32_t const* maskIdx, T const* input, T* output);
// One of the preferred ways of making TensorRT to be able to see
// our custom layer requires extending IPluginV2 and IPluginCreator classes.
// For requirements for overriden functions, check TensorRT API docs.
class QKVToContextPluginDynamic : public IPluginV3,
public IPluginV3OneCore,
public IPluginV3OneBuild,
public IPluginV3OneRuntime
{
public:
QKVToContextPluginDynamic(const std::string name, const nvinfer1::DataType type, const int32_t hiddenSize,
const int32_t numHeads, float const dqProbs, bool hasImask = false);
// constructor that also takes in MHARunner state
// this constructor should only be called during runtime plugin creation after engine deserialization
QKVToContextPluginDynamic(const std::string name, const DataType type, const int32_t S, const int32_t B,
const int32_t SM, const int32_t hiddenSize, const int32_t numHeads, float const dqProbs, bool hasImask,
bool hasUnfusedDispatcher, void const* runnerStateBuffer);
// It doesn't make sense to make QKVToContextPluginDynamic without arguments, so we
// delete default constructor.
QKVToContextPluginDynamic() = delete;
~QKVToContextPluginDynamic() override;
// IPluginV3 Methods
// NOTE: since this is itself is an abstract class, the rest of virtual methods defined in its children classes
IPluginCapability* getCapabilityInterface(PluginCapabilityType type) noexcept override;
// end of IPluginV3 Methods
// IPluginV3OneCore Methods
char const* getPluginName() const noexcept override;
char const* getPluginNamespace() const noexcept override;
void setPluginNamespace(char const* pluginNamespace) noexcept;
char const* getPluginVersion() const noexcept override;
// end of IPluginV3OneCore Methods
// IPluginV3Build Methods
bool supportsFormatCombination(
int32_t pos, DynamicPluginTensorDesc const* inOut, int32_t nbInputs, int32_t nbOutputs) noexcept override;
int32_t configurePlugin(DynamicPluginTensorDesc const* in, int32_t nbInputs, DynamicPluginTensorDesc const* out,
int32_t nbOutputs) noexcept override;
size_t getWorkspaceSize(DynamicPluginTensorDesc const* inputs, int32_t nbInputs,
DynamicPluginTensorDesc const* outputs, int32_t nbOutputs) const noexcept override;
int32_t getOutputDataTypes(
DataType* outputTypes, int32_t nbOutputs, DataType const* inputTypes, int32_t nbInputs) const noexcept override;
int32_t getNbOutputs() const noexcept override;
int32_t getOutputShapes(DimsExprs const* inputs, int32_t nbInputs, DimsExprs const* shapeInputs,
int32_t nbShapeInputs, DimsExprs* outputs, int32_t nbOutputs, IExprBuilder& exprBuilder) noexcept override;
// end IPluginV3Build Methods
// IPluginV3Runtime Methods
IPluginV3* clone() noexcept override;
int32_t onShapeChange(
PluginTensorDesc const* in, int32_t nbInputs, PluginTensorDesc const* out, int32_t nbOutputs) noexcept override;
int32_t enqueue(nvinfer1::PluginTensorDesc const* inputDesc, nvinfer1::PluginTensorDesc const* outputDesc,
void const* const* inputs, void* const* outputs, void* workspace, cudaStream_t stream) noexcept override;
IPluginV3* attachToContext(IPluginResourceContext* context) noexcept override;
PluginFieldCollection const* getFieldsToSerialize() noexcept override;
// end IPluginV3Runtime Methods
// setter for mCublasWrapper and mCublasHandle
void setCublasResources(std::shared_ptr<CublasWrapper>);
protected:
void createMHARunner();
private:
const std::string mLayerName;
std::string mNamespace;
// used for sequence len 128, 384, precision int8
// used for sequence len 64, 96, 128, 384, precision fp16
std::unique_ptr<MHARunner> fusedDispatcher;
// used for other sequence, precision fp32 and fp16
std::unique_ptr<MHARunner> unfusedDispatcher;
int32_t mS{};
int32_t mB{};
int32_t mSM{};
int32_t mHeadSize{};
int32_t mHiddenSize;
int32_t mNumHeads{};
int32_t mHasImask{};
int32_t mHasUnfusedDispatcher{};
nvinfer1::DataType mType{};
float mDqProbs{};
nvinfer1::pluginInternal::cublasHandle_t mCublasHandle{};
// the wrapper pointer is shared among all plugins attached to the same context.
std::shared_ptr<nvinfer1::pluginInternal::CublasWrapper> mCublasWrapper;
// IPluginV3 serialization related
std::vector<nvinfer1::PluginField> mDataToSerialize;
nvinfer1::PluginFieldCollection mFCToSerialize;
std::vector<char> mRunnerStateBuffer; // memory management of this is handled automatically by class destructor
};
class QKVToContextPluginDynamicCreator : public nvinfer1::IPluginCreatorV3One
{
public:
QKVToContextPluginDynamicCreator();
~QKVToContextPluginDynamicCreator() override = default;
char const* getPluginName() const noexcept override;
char const* getPluginVersion() const noexcept override;
PluginFieldCollection const* getFieldNames() noexcept override;
IPluginV3* createPlugin(char const* name, PluginFieldCollection const* fc, TensorRTPhase phase) noexcept override;
void setPluginNamespace(char const* libNamespace) noexcept;
char const* getPluginNamespace() const noexcept override;
private:
nvinfer1::PluginFieldCollection mFC;
std::vector<nvinfer1::PluginField> mPluginAttributes;
std::string mNamespace;
};
class QKVToContextVarSeqlenPlugin : public IPluginV3,
public IPluginV3OneCore,
public IPluginV3OneBuild,
public IPluginV3OneRuntime
{
public:
QKVToContextVarSeqlenPlugin(std::string const name, nvinfer1::DataType const type, int32_t const hiddenSize,
int32_t const numHeads, float const dqProbs, bool hasImask = false, bool varSeqlen = false,
bool const useInt8ScaleMax = true);
QKVToContextVarSeqlenPlugin(std::string const name, int32_t const s, int32_t b, nvinfer1::DataType const type,
int32_t const hiddenSize, int32_t const numHeads, float const dqProbs, bool hasImask, bool varSeqlen,
bool const useInt8ScaleMax, void const* runnerStateBuffer);
// It doesn't make sense to make QKVToContextVarSeqlenPlugin without arguments, so we
// delete default constructor.
QKVToContextVarSeqlenPlugin() = delete;
~QKVToContextVarSeqlenPlugin() override;
// IPluginV3 Methods
// NOTE: since this is itself is an abstract class, the rest of virtual methods defined in its children classes
IPluginCapability* getCapabilityInterface(PluginCapabilityType type) noexcept override;
// end of IPluginV3 Methods
// IPluginV3OneCore Methods
char const* getPluginName() const noexcept override;
char const* getPluginNamespace() const noexcept override;
void setPluginNamespace(char const* pluginNamespace) noexcept;
char const* getPluginVersion() const noexcept override;
// end of IPluginV3OneCore Methods
// IPluginV3Build Methods
bool supportsFormatCombination(
int32_t pos, DynamicPluginTensorDesc const* inOut, int32_t nbInputs, int32_t nbOutputs) noexcept override;
int32_t configurePlugin(DynamicPluginTensorDesc const* in, int32_t nbInputs, DynamicPluginTensorDesc const* out,
int32_t nbOutputs) noexcept override;
size_t getWorkspaceSize(DynamicPluginTensorDesc const* inputs, int32_t nbInputs,
DynamicPluginTensorDesc const* outputs, int32_t nbOutputs) const noexcept override;
int32_t getOutputDataTypes(
DataType* outputTypes, int32_t nbOutputs, DataType const* inputTypes, int32_t nbInputs) const noexcept override;
int32_t getNbOutputs() const noexcept override;
int32_t getOutputShapes(DimsExprs const* inputs, int32_t nbInputs, DimsExprs const* shapeInputs,
int32_t nbShapeInputs, DimsExprs* outputs, int32_t nbOutputs, IExprBuilder& exprBuilder) noexcept override;
// end IPluginV3Build Methods
// IPluginV3Runtime Methods
IPluginV3* clone() noexcept override;
int32_t onShapeChange(
PluginTensorDesc const* in, int32_t nbInputs, PluginTensorDesc const* out, int32_t nbOutputs) noexcept override;
int32_t enqueue(nvinfer1::PluginTensorDesc const* inputDesc, nvinfer1::PluginTensorDesc const* outputDesc,
void const* const* inputs, void* const* outputs, void* workspace, cudaStream_t stream) noexcept override;
IPluginV3* attachToContext(IPluginResourceContext* context) noexcept override;
PluginFieldCollection const* getFieldsToSerialize() noexcept override;
// setter for mCublasWrapper and mCublasHandle
void setCublasResources(std::shared_ptr<CublasWrapper>);
protected:
void createMHARunner();
private:
const std::string mLayerName;
std::string mNamespace;
// Used for kernels with header size equals to 32.
std::unique_ptr<MHARunner> mDispatcher;
std::unique_ptr<QkvPaddingRunner> mPatcher;
int32_t mS{};
int32_t mB{};
int32_t mSM{};
int32_t mHeadSize{};
int32_t mHiddenSize{};
int32_t mNumHeads{};
int32_t mHasImask{};
nvinfer1::DataType mType{};
float mDqProbs{};
int32_t mHdim{};
int32_t mUseVarSeqlen{};
int32_t mUseInt8ScaleMax{true};
nvinfer1::pluginInternal::cublasHandle_t mCublasHandle{};
// the wrapper pointer is shared among all plugins attached to the same context.
std::shared_ptr<nvinfer1::pluginInternal::CublasWrapper> mCublasWrapper;
// serialization data structures
std::vector<char> mRunnerStateBuffer; // memory management of this is handled automatically by class destructor
std::vector<nvinfer1::PluginField> mDataToSerialize;
nvinfer1::PluginFieldCollection mFCToSerialize;
};
class QKVToContextVarSeqlenPluginCreator : public nvinfer1::IPluginCreatorV3One
{
public:
QKVToContextVarSeqlenPluginCreator();
~QKVToContextVarSeqlenPluginCreator() override = default;
char const* getPluginName() const noexcept override;
char const* getPluginVersion() const noexcept override;
PluginFieldCollection const* getFieldNames() noexcept override;
IPluginV3* createPlugin(char const* name, PluginFieldCollection const* fc, TensorRTPhase phase) noexcept override;
void setPluginNamespace(char const* libNamespace) noexcept;
char const* getPluginNamespace() const noexcept override;
private:
nvinfer1::PluginFieldCollection mFC;
std::vector<nvinfer1::PluginField> mPluginAttributes;
std::string mNamespace;
};
} // namespace bert
} // namespace plugin
} // namespace nvinfer1
#endif // TRT_QKV_TO_CONTEXT_PLUGIN_H
#endif // CUDA_VERSION >= 10010
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