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https://github.com/NVIDIA/TensorRT-LLM.git
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4bb65f216f
* Update TensorRT-LLM --------- Co-authored-by: meghagarwal <16129366+megha95@users.noreply.github.com> Co-authored-by: Shixiaowei02 <39303645+Shixiaowei02@users.noreply.github.com>
119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
/*
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* Copyright (c) 2022-2024, 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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#include "tensorrt_llm/runtime/ipcUtils.h"
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#include "tensorrt_llm/common/cudaUtils.h"
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#include "tensorrt_llm/common/mpiUtils.h"
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namespace tensorrt_llm::runtime
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{
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void setPeerAccess(WorldConfig const& worldConfig, bool enable)
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{
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auto const srcNode = worldConfig.getTensorParallelRank();
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for (SizeType destNode = 0; destNode < worldConfig.getTensorParallelism(); destNode++)
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{
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if (destNode == srcNode)
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{
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continue;
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}
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int canAccessPeer;
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TLLM_CUDA_CHECK(cudaDeviceCanAccessPeer(&canAccessPeer, srcNode, destNode));
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if (enable)
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{
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cudaDeviceEnablePeerAccess(destNode, 0);
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}
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else
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{
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cudaDeviceDisablePeerAccess(destNode);
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}
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auto const error = cudaGetLastError();
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if (error != cudaErrorPeerAccessAlreadyEnabled && error != cudaErrorPeerAccessNotEnabled)
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{
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TLLM_CUDA_CHECK(error);
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}
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}
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}
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IpcMemory::IpcMemory(WorldConfig const& worldConfig, std::size_t bufferSize)
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: mWorldConfig(worldConfig)
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, mCommPtrs(worldConfig.getTensorParallelism())
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, mBufferSize(bufferSize)
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{
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allocateIpcMemory();
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}
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void IpcMemory::allocateIpcMemory()
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{
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TLLM_CUDA_CHECK(cudaMalloc(&mBufferPtr, mBufferSize));
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TLLM_CUDA_CHECK(cudaMemset(mBufferPtr, 0, mBufferSize));
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cudaIpcMemHandle_t localHandle;
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TLLM_CUDA_CHECK(cudaIpcGetMemHandle(&localHandle, mBufferPtr));
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auto const tpRank = mWorldConfig.getTensorParallelRank();
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auto const ppRank = mWorldConfig.getPipelineParallelRank();
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auto const comm = COMM_SESSION.split(ppRank, tpRank);
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std::vector<char> serialHandles(CUDA_IPC_HANDLE_SIZE * mWorldConfig.getTensorParallelism(), 0);
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comm.allgather(&localHandle.reserved, serialHandles.data(), CUDA_IPC_HANDLE_SIZE, mpi::MpiType::kBYTE);
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std::vector<cudaIpcMemHandle_t> handles(mWorldConfig.getTensorParallelism());
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for (size_t i = 0; i < handles.size(); ++i)
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{
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memcpy(handles[i].reserved, &serialHandles[i * CUDA_IPC_HANDLE_SIZE], CUDA_IPC_HANDLE_SIZE);
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}
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for (size_t nodeId = 0; nodeId < handles.size(); nodeId++)
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{
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if ((int) nodeId == mWorldConfig.getTensorParallelRank())
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{
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mCommPtrs[nodeId] = mBufferPtr;
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}
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else
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{
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uint8_t* foreignBuffer;
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TLLM_CUDA_CHECK(cudaIpcOpenMemHandle(
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reinterpret_cast<void**>(&foreignBuffer), handles[nodeId], cudaIpcMemLazyEnablePeerAccess));
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mCommPtrs[nodeId] = foreignBuffer;
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}
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}
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}
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IpcMemory::~IpcMemory()
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{
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destroyIpcMemory();
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}
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void IpcMemory::destroyIpcMemory()
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{
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for (SizeType nodeId = 0; nodeId < mWorldConfig.getTensorParallelism(); ++nodeId)
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{
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if ((int) nodeId == mWorldConfig.getTensorParallelRank())
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{
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TLLM_CUDA_CHECK(cudaFree(mCommPtrs[nodeId]));
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}
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else
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{
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TLLM_CUDA_CHECK(cudaIpcCloseMemHandle(mCommPtrs[nodeId]));
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}
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}
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cudaFree(mBufferPtr);
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}
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} // namespace tensorrt_llm::runtime
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