mirror of
https://github.com/NVIDIA/TensorRT-LLM.git
synced 2026-01-14 06:27:45 +08:00
202bed4574
Signed-off-by: nv-guomingz <137257613+nv-guomingz@users.noreply.github.com> Signed-off-by: Wangshanshan <30051912+dominicshanshan@users.noreply.github.com>
426 lines
14 KiB
C++
426 lines
14 KiB
C++
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/*
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* SPDX-FileCopyrightText: Copyright (c) 1993-2024 NVIDIA CORPORATION &
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* AFFILIATES. All rights reserved. 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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#include "lowLatencyGemmPlugin.h"
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#include "low_latency_gemm.h"
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#include "tensorrt_llm/common/assert.h"
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#include "tensorrt_llm/common/cudaFp8Utils.h"
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#include "tensorrt_llm/common/logger.h"
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#include <NvInferRuntime.h>
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#include <NvInferRuntimeBase.h>
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#include <NvInferRuntimePlugin.h>
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#include <cstddef>
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#include <cstdint>
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#include <cstdio>
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#include <numeric>
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#include <optional>
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#include <vector>
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using namespace nvinfer1;
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using namespace tensorrt_llm::common;
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using namespace tensorrt_llm::kernels::internal_cutlass_kernels;
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using tensorrt_llm::plugins::LowLatencyGemmPluginCreator;
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using tensorrt_llm::plugins::LowLatencyGemmPlugin;
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using tensorrt_llm::plugins::LowLatencyGemmPluginProfiler;
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using tensorrt_llm::plugins::read;
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using tensorrt_llm::plugins::write;
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static char const* LOW_LATENCY_GEMM_PLUGIN_VERSION{"1"};
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static char const* LOW_LATENCY_GEMM_PLUGIN_NAME{"LowLatencyGemm"};
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PluginFieldCollection LowLatencyGemmPluginCreator::mFC{};
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std::vector<nvinfer1::PluginField> LowLatencyGemmPluginCreator::mPluginAttributes;
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using FP8Type = __nv_fp8_e4m3;
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static std::optional<float> getFloatEnv(char const* name)
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{
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char const* const env = std::getenv(name);
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if (env == nullptr)
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{
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return std::nullopt;
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}
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try
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{
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float value = std::stof(env);
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return {value};
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}
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catch (std::invalid_argument const& e)
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{
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return std::nullopt;
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}
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catch (std::out_of_range const& e)
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{
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return std::nullopt;
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}
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};
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void LowLatencyGemmPluginProfiler::runTactic(int m, int n, int k, LowLatencyGemmPluginProfiler::Config const& tactic,
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char* workspace, cudaStream_t const& stream)
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{
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float default_pdl_overlap_ratio = 0.5;
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float default_prefetch_ratio = -1.0;
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FP8Type* aTmp = reinterpret_cast<FP8Type*>(workspace);
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FP8Type* bTmp
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= reinterpret_cast<FP8Type*>(nextWorkspacePtr(reinterpret_cast<int8_t*>(aTmp), m * k * sizeof(FP8Type)));
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void* cTmp = reinterpret_cast<void*>(nextWorkspacePtr(reinterpret_cast<int8_t*>(bTmp), n * k * sizeof(FP8Type)));
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size_t workspaceSize = mRunner->getWorkspaceSize(m, n, k);
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char* workspaceTmp = reinterpret_cast<char*>(nextWorkspacePtr(
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reinterpret_cast<int8_t*>(cTmp), m * n * (mType == nvinfer1::DataType::kFLOAT ? sizeof(float) : sizeof(half))));
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mRunner->gemm(aTmp, bTmp, 1.0f, 0.0f, nullptr, cTmp, m, n, k, default_pdl_overlap_ratio, default_prefetch_ratio,
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tactic, workspaceTmp, workspaceSize, stream);
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}
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void LowLatencyGemmPluginProfiler::computeTmpSize(size_t maxM, size_t n, size_t k)
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{
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std::vector<size_t> workspaces = {maxM * k * sizeof(FP8Type), n * k * sizeof(FP8Type),
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maxM * n * (mType == nvinfer1::DataType::kFLOAT ? sizeof(float) : sizeof(half)),
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mRunner->getWorkspaceSize(maxM, n, k)};
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size_t bytes = calculateTotalWorkspaceSize(workspaces.data(), workspaces.size());
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setTmpWorkspaceSizeInBytes(bytes);
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}
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std::vector<LowLatencyGemmPluginProfiler::Config> LowLatencyGemmPluginProfiler::getTactics(int m, int n, int k) const
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{
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return mRunner->getConfigs();
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}
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LowLatencyGemmPlugin::LowLatencyGemmPlugin(
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nvinfer1::DataType type, float alpha, PluginProfilerPtr const& pluginProfiler)
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: mPluginProfiler(pluginProfiler)
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, mAplha(alpha)
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{
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init(type);
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}
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LowLatencyGemmPlugin::LowLatencyGemmPlugin(void const* data, size_t length, PluginProfilerPtr const& pluginProfiler)
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: mPluginProfiler(pluginProfiler)
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{
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char const *d = reinterpret_cast<char const*>(data), *a = d;
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nvinfer1::DataType type;
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read(d, type);
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read(d, mAplha);
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read(d, mDims);
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init(type);
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mPluginProfiler->deserialize(d, mDims, mGemmId);
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TLLM_CHECK_WITH_INFO(d == a + length,
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"Expected length (%d) != real length (%d). This is often "
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"caused by using different TensorRT LLM version to build "
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"engine and run engine.",
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(int) length, (int) (d - a));
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}
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void LowLatencyGemmPlugin::init(nvinfer1::DataType type)
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{
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mType = type;
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if (mType == nvinfer1::DataType::kFLOAT)
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{
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m_lowLatencyGemmRunner = std::make_shared<CutlassLowLatencyFp8GemmRunner<float>>();
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}
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else if (mType == nvinfer1::DataType::kHALF)
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{
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m_lowLatencyGemmRunner = std::make_shared<CutlassLowLatencyFp8GemmRunner<half>>();
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}
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#ifdef ENABLE_BF16
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else if (mType == nvinfer1::DataType::kBF16)
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{
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m_lowLatencyGemmRunner = std::make_shared<CutlassLowLatencyFp8GemmRunner<__nv_bfloat16>>();
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}
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#endif
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else
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{
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TLLM_THROW("Unsupported data type");
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}
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mGemmId = GemmIdCore(mDims.n, mDims.k, mType);
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}
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nvinfer1::DimsExprs LowLatencyGemmPlugin::getOutputDimensions(
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int outputIndex, nvinfer1::DimsExprs const* inputs, int nbInputs, nvinfer1::IExprBuilder& exprBuilder) noexcept
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{
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try
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{
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TLLM_CHECK(nbInputs == 2);
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TLLM_CHECK(outputIndex == 0);
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int const nbDimsA = inputs[0].nbDims;
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TLLM_CHECK(nbDimsA >= 2);
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DimsExprs ret;
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ret.nbDims = nbDimsA;
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for (int ii = 0; ii < nbDimsA - 1; ++ii)
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{
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ret.d[ii] = inputs[0].d[ii];
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}
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// input[1] , weights [n,k]
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ret.d[nbDimsA - 1] = inputs[1].d[0];
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return ret;
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}
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catch (std::exception const& e)
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{
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caughtError(e);
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}
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return DimsExprs{};
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}
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bool LowLatencyGemmPlugin::supportsFormatCombination(
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int pos, nvinfer1::PluginTensorDesc const* inOut, int nbInputs, int nbOutputs) noexcept
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{
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switch (pos)
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{
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case 0:
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// activation
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return inOut[pos].type == nvinfer1::DataType::kFP8 && inOut[pos].format == TensorFormat::kLINEAR;
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case 1:
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// weights
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// Weights stored in checkpoint must have fp8 type
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return inOut[pos].type == nvinfer1::DataType::kFP8 && inOut[pos].format == TensorFormat::kLINEAR;
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case 2:
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// out
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return inOut[pos].type == mType && inOut[pos].format == TensorFormat::kLINEAR;
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default:
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// Never should be here
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assert(false);
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return false;
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}
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}
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void LowLatencyGemmPlugin::configurePlugin(nvinfer1::DynamicPluginTensorDesc const* in, int nbInputs,
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nvinfer1::DynamicPluginTensorDesc const* out, int nbOutputs) noexcept
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{
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auto const minM = std::accumulate(in[0].min.d, in[0].min.d + in[0].min.nbDims - 1, 1, std::multiplies<int>());
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auto const maxM = std::accumulate(in[0].max.d, in[0].max.d + in[0].max.nbDims - 1, 1, std::multiplies<int>());
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int const maxK = in[0].max.d[in[0].max.nbDims - 1];
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int const maxN = in[1].max.d[0];
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int const minK = in[0].min.d[in[0].min.nbDims - 1];
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int const minN = in[1].min.d[0];
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TLLM_CHECK_WITH_INFO(minN == maxN, "Variable out channels is not allowed");
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TLLM_CHECK_WITH_INFO(minK == maxK, "Variable in channels is not allowed");
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if (!mDims.isInitialized())
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{
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mDims = {minM, maxM, maxN, maxK};
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}
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mGemmId = {maxN, maxK, mType};
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m_workspaceMaxSize = m_lowLatencyGemmRunner->getWorkspaceSize(maxM, maxN, maxK);
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}
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size_t LowLatencyGemmPlugin::getWorkspaceSize(nvinfer1::PluginTensorDesc const* inputs, int nbInputs,
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nvinfer1::PluginTensorDesc const* outputs, int nbOutputs) const noexcept
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{
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return m_workspaceMaxSize;
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}
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int LowLatencyGemmPlugin::enqueue(nvinfer1::PluginTensorDesc const* inputDesc,
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nvinfer1::PluginTensorDesc const* outputDesc, void const* const* inputs, void* const* outputs, void* workspace,
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cudaStream_t stream) noexcept
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{
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// input0 activation [M,K]
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// input1 weights [N,K]
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// output0 [M,N]
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int64_t m64 = 1;
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for (int ii = 0; ii < inputDesc[0].dims.nbDims - 1; ++ii)
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{
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m64 *= inputDesc[0].dims.d[ii];
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}
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int const m = TLLM_INT32_CAST(m64);
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int const n = TLLM_INT32_CAST(inputDesc[1].dims.d[0]);
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int const k = TLLM_INT32_CAST(inputDesc[0].dims.d[inputDesc[0].dims.nbDims - 1]);
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int const wsSize = m_lowLatencyGemmRunner->getWorkspaceSize(m, n, k);
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auto const& bestTactic = mPluginProfiler->getBestConfig(m, mGemmId);
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TLLM_CHECK_WITH_INFO(bestTactic, "No valid Low Latency GEMM tactic");
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auto env_pdl_overlap_ratio = getFloatEnv("TRTLLM_PDL_OVERLAP_RATIO");
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auto env_prefetch_ratio = getFloatEnv("TRTLLM_PREFETCH_RATIO");
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auto valid_ratio = [](std::optional<float>& env_val, float default_val)
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{
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if (env_val.has_value())
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{
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TLLM_CHECK_WITH_INFO(env_val.value() <= 1.0f, "Valid ratio should be less than or equal to 1.0");
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return env_val.value();
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}
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return default_val;
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};
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float pdl_overlap_ratio = valid_ratio(env_pdl_overlap_ratio, /*default_val=*/0.5);
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float prefetch_ratio = valid_ratio(env_prefetch_ratio, /*default_val=*/-1.0);
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m_lowLatencyGemmRunner->gemm(const_cast<FP8Type*>(reinterpret_cast<FP8Type const*>(inputs[0])),
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const_cast<FP8Type*>(reinterpret_cast<FP8Type const*>(inputs[1])), mAplha, 0.0F, nullptr, outputs[0], m, n, k,
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pdl_overlap_ratio, prefetch_ratio, *bestTactic, reinterpret_cast<char*>(workspace), wsSize, stream);
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return 0;
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}
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nvinfer1::DataType LowLatencyGemmPlugin::getOutputDataType(
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int index, nvinfer1::DataType const* inputTypes, int nbInputs) const noexcept
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{
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TLLM_CHECK(index == 0);
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return mType;
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}
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// IPluginV2 Methods
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char const* LowLatencyGemmPlugin::getPluginType() const noexcept
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{
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return LOW_LATENCY_GEMM_PLUGIN_NAME;
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}
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char const* LowLatencyGemmPlugin::getPluginVersion() const noexcept
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{
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return LOW_LATENCY_GEMM_PLUGIN_VERSION;
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}
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int LowLatencyGemmPlugin::getNbOutputs() const noexcept
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{
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return 1;
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}
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int LowLatencyGemmPlugin::initialize() noexcept
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{
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configGemm();
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return 0;
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}
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void LowLatencyGemmPlugin::terminate() noexcept {}
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nvinfer1::IPluginV2DynamicExt* LowLatencyGemmPlugin::clone() const noexcept
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{
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auto* plugin = new LowLatencyGemmPlugin(*this);
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return plugin;
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}
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size_t LowLatencyGemmPlugin::getSerializationSize() const noexcept
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{
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return sizeof(nvinfer1::DataType) + // dtype
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sizeof(float) * 1 + // alpha
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sizeof(mDims) + mPluginProfiler->getSerializationSize(mGemmId);
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}
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void LowLatencyGemmPlugin::serialize(void* buffer) const noexcept
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{
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char *d = static_cast<char*>(buffer), *a = d;
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write(d, mType);
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write(d, mAplha);
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write(d, mDims);
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mPluginProfiler->serialize(d, mGemmId);
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TLLM_CHECK(d == a + getSerializationSize());
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}
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void LowLatencyGemmPlugin::destroy() noexcept
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{
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// This gets called when the network containing plugin is destroyed
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delete this;
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}
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void LowLatencyGemmPlugin::configGemm()
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{
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mPluginProfiler->profileTactics(m_lowLatencyGemmRunner, mType, mDims, mGemmId);
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}
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LowLatencyGemmPluginCreator::LowLatencyGemmPluginCreator()
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{
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// Fill PluginFieldCollection with PluginField arguments metadata
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mPluginAttributes.clear();
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mPluginAttributes.emplace_back(PluginField("alpha", nullptr, PluginFieldType::kFLOAT32));
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mPluginAttributes.emplace_back(PluginField("type_id", nullptr, PluginFieldType::kINT32));
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mFC.nbFields = mPluginAttributes.size();
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mFC.fields = mPluginAttributes.data();
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}
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char const* LowLatencyGemmPluginCreator::getPluginName() const noexcept
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{
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return LOW_LATENCY_GEMM_PLUGIN_NAME;
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}
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char const* LowLatencyGemmPluginCreator::getPluginVersion() const noexcept
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{
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return LOW_LATENCY_GEMM_PLUGIN_VERSION;
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}
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PluginFieldCollection const* LowLatencyGemmPluginCreator::getFieldNames() noexcept
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{
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return &mFC;
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}
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IPluginV2* LowLatencyGemmPluginCreator::createPlugin(char const* name, PluginFieldCollection const* fc) noexcept
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{
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PluginField const* fields = fc->fields;
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float alpha{};
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nvinfer1::DataType type{};
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for (int i = 0; i < fc->nbFields; i++)
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{
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char const* attrName = fields[i].name;
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if (!strcmp(attrName, "alpha"))
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{
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TLLM_CHECK(fields[i].type == PluginFieldType::kFLOAT32);
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alpha = *(static_cast<float const*>(fields[i].data));
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}
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else if (!strcmp(attrName, "type_id"))
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{
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TLLM_CHECK(fields[i].type == PluginFieldType::kINT32);
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type = static_cast<nvinfer1::DataType>(*(static_cast<nvinfer1::DataType const*>(fields[i].data)));
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}
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}
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try
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{
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//
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// GemmPluginCreator is unique and shared for an engine generation
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// Create plugin profiler with shared tactics map
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auto pluginProfiler = gemmPluginProfileManager.createGemmPluginProfiler(/*inference=*/false);
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auto* obj = new LowLatencyGemmPlugin(type, alpha, pluginProfiler);
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obj->setPluginNamespace(mNamespace.c_str());
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return obj;
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}
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catch (std::exception const& e)
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{
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caughtError(e);
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}
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return nullptr;
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}
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IPluginV2* LowLatencyGemmPluginCreator::deserializePlugin(
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char const* name, void const* serialData, size_t serialLength) noexcept
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{
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try
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{
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auto pluginProfiler = gemmPluginProfileManager.createGemmPluginProfiler(/*inference=*/true);
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auto* obj = new LowLatencyGemmPlugin(serialData, serialLength, pluginProfiler);
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obj->setPluginNamespace(mNamespace.c_str());
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return obj;
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}
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catch (std::exception const& e)
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{
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caughtError(e);
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}
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return nullptr;
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}
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