64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/*
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* Copyright (c) 2018-2020, NVIDIA CORPORATION. All rights reserved.
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*
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* NVIDIA CORPORATION and its licensors retain all intellectual property
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* and proprietary rights in and to this software, related documentation
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* and any modifications thereto. Any use, reproduction, disclosure or
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* distribution of this software and related documentation without an express
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* license agreement from NVIDIA CORPORATION is strictly prohibited.
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*
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* See COPYRIGHT.txt for license information
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*/
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#include "coll_test.h"
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int main(int argc, char *argv[]) {
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int status = 0;
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int mype;
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size_t size = 1;
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struct timeval t_start, t_stop;
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float ms = 0;
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double latency_value;
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cudaEvent_t start_event, stop_event;
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cudaStream_t stream;
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read_args(argc, argv);
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init_wrapper(&argc, &argv);
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mype = nvshmem_my_pe();
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#ifdef _NVSHMEM_DEBUG
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int npes = nvshmem_n_pes();
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#endif
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CUDA_CHECK(cudaStreamCreateWithFlags(&stream, cudaStreamNonBlocking));
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CUDA_CHECK(cudaEventCreate(&start_event));
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CUDA_CHECK(cudaEventCreate(&stop_event));
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DEBUG_PRINT("SHMEM: [%d of %d] hello shmem world! \n", mype, npes);
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for (size_t iter = 0; iter < iters + warmup_iters; iter++) {
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if (iter == warmup_iters) CUDA_CHECK(cudaEventRecord(start_event, stream));
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nvshmemx_team_sync_on_stream(NVSHMEM_TEAM_WORLD, stream);
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}
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CUDA_CHECK(cudaEventRecord(stop_event, stream));
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CUDA_CHECK(cudaStreamSynchronize(stream));
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CUDA_CHECK(cudaEventElapsedTime(&ms, start_event, stop_event));
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if (!mype) {
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latency_value = (ms / iters) * 1000;
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print_table_basic("sync_on_stream", "None", "size (Bytes)", "latency", "us", '-', &size,
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&latency_value, 1);
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}
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nvshmem_barrier_all();
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CUDA_CHECK(cudaStreamDestroy(stream));
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CUDA_CHECK(cudaEventDestroy(start_event));
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CUDA_CHECK(cudaEventDestroy(stop_event));
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finalize_wrapper();
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return status;
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}
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