Bertan Dogancay
105 lines
3.7 KiB
Plaintext
105 lines
3.7 KiB
Plaintext
/*************************************************************************
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* Copyright (c) 2016-2022, NVIDIA CORPORATION. All rights reserved.
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* Modifications Copyright (c) 2019-2022 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 "cuda_runtime.h"
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#include "common.h"
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#define ALIGN 4
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void ReduceScatterGetCollByteCount(size_t *sendcount, size_t *recvcount, size_t *paramcount, size_t *sendInplaceOffset, size_t *recvInplaceOffset, size_t count, int nranks) {
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size_t base = (count/(ALIGN*nranks))*ALIGN;
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*sendcount = base*nranks;
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*recvcount = base;
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*sendInplaceOffset = 0;
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*recvInplaceOffset = base;
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*paramcount = base;
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}
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testResult_t ReduceScatterInitData(struct threadArgs* args, ncclDataType_t type, ncclRedOp_t op, int root, int rep, int in_place) {
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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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int nranks = args->nProcs*args->nThreads*args->nGpus;
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for (int i=0; i<args->nGpus; i++) {
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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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TESTCHECK(InitData(data, sendcount, 0, type, op, rep, nranks, rank));
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CUDACHECK(cudaMemcpy(args->expected[i], args->recvbuffs[i], args->expectedBytes, cudaMemcpyDefault));
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TESTCHECK(InitDataReduce(args->expected[i], recvcount, rank*recvcount, type, op, rep, nranks));
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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 ReduceScatterGetBw(size_t count, int typesize, double sec, double* algBw, double* busBw, int nranks) {
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double baseBw = (double)(count * typesize * nranks) / 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 ReduceScatterRunColl(void* sendbuff, void* recvbuff, size_t count, ncclDataType_t type, ncclRedOp_t op, int root, ncclComm_t comm, cudaStream_t stream) {
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NCCLCHECK(ncclReduceScatter(sendbuff, recvbuff, count, type, op, comm, stream));
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return testSuccess;
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}
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struct testColl reduceScatterTest = {
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"ReduceScatter",
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ReduceScatterGetCollByteCount,
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ReduceScatterInitData,
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ReduceScatterGetBw,
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ReduceScatterRunColl
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};
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void ReduceScatterGetBuffSize(size_t *sendcount, size_t *recvcount, size_t count, int nranks) {
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size_t paramcount, sendInplaceOffset, recvInplaceOffset;
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ReduceScatterGetCollByteCount(sendcount, recvcount, ¶mcount, &sendInplaceOffset, &recvInplaceOffset, count, nranks);
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}
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testResult_t ReduceScatterRunTest(struct threadArgs* args, int root, ncclDataType_t type, const char* typeName, ncclRedOp_t op, const char* opName) {
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args->collTest = &reduceScatterTest;
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ncclDataType_t *run_types;
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ncclRedOp_t *run_ops;
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const char **run_typenames, **run_opnames;
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int type_count, op_count;
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if ((int)type != -1) {
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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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} else {
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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 ((int)op != -1) {
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run_ops = &op;
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run_opnames = &opName;
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op_count = 1;
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} else {
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op_count = test_opnum;
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run_ops = test_ops;
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run_opnames = test_opnames;
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}
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for (int i=0; i<type_count; i++) {
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for (int j=0; j<op_count; j++) {
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TESTCHECK(TimeTest(args, run_types[i], run_typenames[i], run_ops[j], run_opnames[j], -1));
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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 = {
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ReduceScatterGetBuffSize,
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ReduceScatterRunTest
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};
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