mirror of
https://github.com/NVIDIA/TensorRT-LLM.git
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323 lines
8.4 KiB
C++
323 lines
8.4 KiB
C++
/*
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* SPDX-FileCopyrightText: Copyright (c) 1993-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0
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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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#pragma once
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#include <cstdlib>
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#include <iostream>
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#include <memory>
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#include <mutex>
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#include <shared_mutex>
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#include <sstream>
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#include <unordered_map>
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#include <vector>
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#include <cuda_runtime.h>
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#include "tensorrt_llm/common/assert.h"
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#include "tensorrt_llm/common/logger.h"
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#include "tensorrt_llm/plugins/common/plugin.h"
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namespace tensorrt_llm::plugins
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{
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struct GemmDims
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{
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int32_t minM;
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int32_t maxM;
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int32_t n;
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int32_t k;
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GemmDims()
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: minM(-1)
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, maxM(-1)
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, n(-1)
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, k(-1)
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{
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}
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GemmDims(int32_t minM_, int32_t maxM_, int32_t n_, int32_t k_)
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: minM(minM_)
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, maxM(maxM_)
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, n(n_)
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, k(k_)
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{
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}
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bool isInitialized() const
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{
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return minM >= 0 && maxM >= 0 && n >= 0 && k >= 0;
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}
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};
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// Unique ID of GEMM
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// In our case GEMM is uniqly identified by N and K
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class GemmIdCore
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{
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public:
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int n;
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int k;
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nvinfer1::DataType dtype;
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GemmIdCore(int n_, int k_, const nvinfer1::DataType& dtype_)
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: n(n_)
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, k(k_)
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, dtype(dtype_)
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{
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}
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GemmIdCore()
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: n(-1)
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, k(-1)
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, dtype(nvinfer1::DataType::kFLOAT) // dtype does not matter here
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{
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}
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bool operator==(const GemmIdCore& id) const
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{
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return isEqual(id);
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}
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friend std::ostream& operator<<(std::ostream& out, const GemmIdCore& id)
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{
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out << "(N;K)=(" << id.n << ";" << id.k << "),";
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out << " type=" << static_cast<int>(id.dtype);
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return out;
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}
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protected:
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bool isEqual(const GemmIdCore& id) const
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{
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return n == id.n && k == id.k && dtype == id.dtype;
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}
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};
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// Hash of GemmId
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struct GemmIdCoreHash
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{
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std::size_t operator()(const GemmIdCore& id) const
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{
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auto h1 = std::hash<int>{}(id.n);
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auto h2 = std::hash<int>{}(id.k);
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auto h3 = std::hash<int>{}(static_cast<int>(id.dtype));
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return h1 ^ h2 ^ h3;
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}
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};
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class GemmIdCublas : public GemmIdCore
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{
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public:
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bool transA{};
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bool transB{};
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GemmIdCublas(int n_, int k_, const nvinfer1::DataType& dtype_, bool transA_, bool transB_)
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: GemmIdCore(n_, k_, dtype_)
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, transA(transA_)
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, transB(transB_)
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{
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}
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GemmIdCublas() {}
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bool operator==(const GemmIdCublas& id) const
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{
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return isEqual(id) && transA == id.transA && transB == id.transB;
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}
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friend std::ostream& operator<<(std::ostream& out, const GemmIdCublas& id)
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{
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out << "(N;K)=(" << id.n << ";" << id.k << "),";
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out << " type=" << static_cast<int>(id.dtype);
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out << " transA=" << id.transA;
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out << " transB=" << id.transB;
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return out;
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}
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};
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// Hash of GemmIdCublas
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struct GemmIdCublasHash
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{
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std::size_t operator()(const GemmIdCublas& id) const
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{
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auto h1 = std::hash<int>{}(id.n);
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auto h2 = std::hash<int>{}(id.k);
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auto h3 = std::hash<int>{}(static_cast<int>(id.dtype));
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auto h4 = std::hash<bool>{}(id.transA);
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auto h5 = std::hash<bool>{}(id.transB);
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return h1 ^ h2 ^ h3 ^ h4 ^ h5;
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}
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};
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template <typename Config, typename RunnerPtr, typename GemmIdType, typename GemmIdHashType>
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class GemmPluginProfiler
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{
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public:
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static constexpr int MAX_PROFILE_M = 8192;
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// Map for single GEMM for different Ms (GEMM dimension) to the best config for particular M
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using MProfileMap = std::unordered_map<int, std::optional<Config>>;
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using MProfileMapPtr = std::shared_ptr<MProfileMap>;
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// requires exclusive ownership to write to *this
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using reader_lock = std::unique_lock<std::shared_timed_mutex>;
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// requires shared ownership to read from other
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using writer_lock = std::shared_lock<std::shared_timed_mutex>;
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// Struct of continuing map if GEMMs to the best profiles for different Ms
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struct MNKProfileMap
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{
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// Mutex guarding map
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std::shared_timed_mutex mutex;
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// Map from GEMM Id to profile for particular GEMM
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std::unordered_map<GemmIdType, MProfileMapPtr, GemmIdHashType> profileMap;
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bool existsMProfileMap(const GemmIdType& id)
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{
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const auto iter = profileMap.find(id);
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return iter != profileMap.end();
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}
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void createMProfileMap(const GemmIdType& id)
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{
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profileMap[id] = std::make_shared<MProfileMap>();
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}
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MProfileMapPtr getMProfileMap(const GemmIdType& id)
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{
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const auto iter = profileMap.find(id);
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if (iter == profileMap.end())
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{
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std::ostringstream msg;
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msg << "Cannot find ID (" << id << ") in the profile map. Abort.";
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TLLM_LOG_ERROR(msg.str());
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}
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return iter->second;
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}
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};
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using MNKProfileMapPtr = std::shared_ptr<MNKProfileMap>;
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GemmPluginProfiler();
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void serialize(char*& buffer, const GemmIdType& gemmId) const;
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void deserialize(const char*& data, GemmDims& dims, const GemmIdType& gemmId);
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size_t getSerializationSize(const GemmIdType& gemmId) const;
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void profileTactics(
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const RunnerPtr& runner, const nvinfer1::DataType& type, const GemmDims& dims, const GemmIdType& gemmId);
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void setSelectionTactics(const MNKProfileMapPtr& map)
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{
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mMNKProfileMap = map;
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}
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void setTmpWorkspaceSizeInBytes(size_t bytes)
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{
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mTmpWorkspaceSizeInBytes = bytes;
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}
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void setSkip(bool skip)
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{
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mSkip = mSkip || skip;
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}
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std::optional<Config> getBestConfig(int m, const GemmIdType& gemmId) const;
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protected:
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virtual void runTactic(int m, int n, int k, const Config& tactic, char* workspace, const cudaStream_t& stream) = 0;
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virtual void computeTmpSize(int maxM, int n, int k) = 0;
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virtual bool checkTactic(int m, int n, int k, const Config& tactic) const
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{
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return true;
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}
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virtual std::vector<Config> getTactics(int m, int n, int k) const = 0;
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virtual void initTmpData(int m, int n, int k, char* workspace, size_t size, cudaStream_t stream){};
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private:
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void allocateTmpData();
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void freeTmpData();
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std::optional<Config> profileTacticsForProblem(int m, int n, int k, const std::vector<Config>& tactics);
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float profileTacticForProblem(int m, int n, int k, const Config& tactic);
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int nextPowerOfTwo(int v) const
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{
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--v;
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v |= v >> 1;
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v |= v >> 2;
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v |= v >> 4;
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v |= v >> 8;
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v |= v >> 16;
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return ++v;
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}
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protected:
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RunnerPtr mRunner{nullptr};
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nvinfer1::DataType mType{};
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private:
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MNKProfileMapPtr mMNKProfileMap{};
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size_t mTmpWorkspaceSizeInBytes{0};
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char* mWorkspaceTmp{nullptr};
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GemmDims mDims{};
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bool mSkip{false};
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};
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template <typename GemmPluginProfilerType>
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class GemmPluginProfilerManager
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{
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public:
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using MNKProfileMap = typename GemmPluginProfilerType::MNKProfileMap;
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using MNKProfileMapPtr = typename GemmPluginProfilerType::MNKProfileMapPtr;
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using GemmPluginProfilerPtr = std::shared_ptr<GemmPluginProfilerType>;
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GemmPluginProfilerManager()
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{
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mMNKProfileMap = std::make_shared<MNKProfileMap>();
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}
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GemmPluginProfilerPtr createGemmPluginProfiler(bool inference, bool skip = false)
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{
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auto profiler = std::make_shared<GemmPluginProfilerType>();
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profiler->setSkip(skip);
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// If the profiler is created during the engine build,
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// mMNKProfileMap is shared between different profilers to minimize the time spent on the profiling
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// and do not repeat profiling for the GEMMs of the same shape.
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if (!inference)
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{
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profiler->setSelectionTactics(mMNKProfileMap);
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}
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return profiler;
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}
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private:
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MNKProfileMapPtr mMNKProfileMap{};
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};
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} // namespace tensorrt_llm::plugins
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