habajpai-amd
141 lignes
4.4 KiB
C++
141 lignes
4.4 KiB
C++
/*************************************************************************
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* Copyright (c) 2016-2022, NVIDIA CORPORATION. All rights reserved.
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* Modifications Copyright (c) 2020-2022 Advanced Micro Devices, Inc. All rights reserved.
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*
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* See LICENSE.txt for license information
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************************************************************************/
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#include "common.h"
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#include "cuda_runtime.h"
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#include "rccl_compat.h"
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void
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ScatterGetCollByteCount(size_t* sendcount, size_t* recvcount, size_t* paramcount,
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size_t* sendInplaceOffset, size_t* recvInplaceOffset,
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size_t count, size_t eltSize, int nranks)
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{
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*recvcount = (count / nranks) & -(16 / eltSize);
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*sendcount = (*recvcount) * nranks;
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*sendInplaceOffset = 0;
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*recvInplaceOffset = *recvcount;
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*paramcount = *recvcount;
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}
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testResult_t
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ScatterInitData(struct threadArgs* args, ncclDataType_t type, ncclRedOp_t op, int root,
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int rep, int in_place)
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{
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size_t sendcount = args->sendBytes / wordSize(type);
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size_t recvcount = args->expectedBytes / wordSize(type);
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for(int i = 0; i < args->nGpus; i++)
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{
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CUDACHECK(cudaSetDevice(args->gpus[i]));
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int rank = ((args->proc * args->nThreads + args->thread) * args->nGpus + i);
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CUDACHECK(cudaMemset(args->recvbuffs[i], 0, args->expectedBytes));
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void* data = in_place ? args->recvbuffs[i] : args->sendbuffs[i];
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if(rank == root)
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TESTCHECK(InitData(data, sendcount, 0, type, ncclSum, rep, 1, 0));
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TESTCHECK(InitData(args->expected[i], recvcount, rank * recvcount, type, ncclSum,
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rep, 1, 0));
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CUDACHECK(cudaDeviceSynchronize());
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}
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return testSuccess;
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}
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void
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ScatterGetBw(size_t count, int typesize, double sec, double* algBw, double* busBw,
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int nranks)
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{
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double baseBw = (double) (count * nranks * typesize) / 1.0E9 / sec;
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*algBw = baseBw;
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double factor = ((double) (nranks - 1)) / ((double) (nranks));
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*busBw = baseBw * factor;
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}
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testResult_t
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ScatterRunColl(void* sendbuff, void* recvbuff, size_t count, ncclDataType_t type,
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ncclRedOp_t op, int root, ncclComm_t comm, cudaStream_t stream,
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void* bias = nullptr)
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{
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(void) bias;
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int nRanks;
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NCCLCHECK(ncclCommCount(comm, &nRanks));
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int rank;
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NCCLCHECK(ncclCommUserRank(comm, &rank));
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size_t rankOffset = count * wordSize(type);
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if(count == 0) return testSuccess;
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NCCLCHECK(ncclGroupStart());
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if(rank == root)
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{
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for(int r = 0; r < nRanks; r++)
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{
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NCCLCHECK(ncclSend(((char*) sendbuff) + r * rankOffset, count, type, r, comm,
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stream));
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}
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}
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NCCLCHECK(ncclRecv(recvbuff, count, type, root, comm, stream));
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NCCLCHECK(ncclGroupEnd());
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return testSuccess;
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}
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struct testColl scatterTest = { "Scatter", ScatterGetCollByteCount, ScatterInitData,
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ScatterGetBw, ScatterRunColl, nullptr };
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void
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ScatterGetBuffSize(size_t* sendcount, size_t* recvcount, size_t count, int nranks)
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{
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size_t paramcount, sendInplaceOffset, recvInplaceOffset;
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ScatterGetCollByteCount(sendcount, recvcount, ¶mcount, &sendInplaceOffset,
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&recvInplaceOffset, count, /*eltSize=*/1, nranks);
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}
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testResult_t
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ScatterRunTest(struct threadArgs* args, int root, ncclDataType_t type,
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const char* typeName, ncclRedOp_t op, const char* opName)
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{
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args->collTest = &scatterTest;
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ncclDataType_t* run_types;
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const char** run_typenames;
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int type_count;
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int begin_root, end_root;
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if((int) type != -1)
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{
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type_count = 1;
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run_types = &type;
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run_typenames = &typeName;
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}
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else
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{
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type_count = test_typenum;
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run_types = test_types;
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run_typenames = test_typenames;
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}
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if(root != -1)
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{
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begin_root = end_root = root;
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}
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else
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{
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begin_root = 0;
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end_root = args->nProcs * args->nThreads * args->nGpus - 1;
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}
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for(int i = 0; i < type_count; i++)
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{
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for(int j = begin_root; j <= end_root; j++)
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{
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TESTCHECK(TimeTest(args, run_types[i], run_typenames[i], (ncclRedOp_t) 0,
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"none", j));
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}
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}
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return testSuccess;
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}
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struct testEngine ncclTestEngine = { ScatterGetBuffSize, ScatterRunTest };
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