gobhardw
92 строки
3.2 KiB
C++
Исполняемый файл
92 строки
3.2 KiB
C++
Исполняемый файл
/*
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Copyright (c) 2020-present Advanced Micro Devices, Inc. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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// OpenMP program to print Hello World
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// using C language is supported by HIP
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// OpenMP header
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#include <omp.h>
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#include <stdio.h>
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#include <stdlib.h>
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// HIP header
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#include <hip/hip_runtime.h>
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#define NUM_THREADS 16
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#define CHECK(cmd) \
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{ \
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hipError_t error = cmd; \
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if (error != hipSuccess) { \
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fprintf(stderr, "error: '%s'(%d) at %s:%d\n", hipGetErrorString(error), \
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error, __FILE__, __LINE__); \
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exit(EXIT_FAILURE); \
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} \
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}
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__global__ void hip_helloworld(unsigned omp_id, int *A_d) {
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// Note: the printf command will only work if printf is enabled in your build.
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// printf("Hello World... from HIP thread = %u\n", omp_id);
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A_d[omp_id] = omp_id;
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}
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int main(int argc, char *argv[]) {
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int *A_h, *A_d;
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size_t Nbytes = NUM_THREADS * sizeof(int);
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hipDeviceProp_t props;
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CHECK(hipGetDeviceProperties(&props, 0 /*deviceID*/));
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// printf("info: running on device %s\n", props.name);
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A_h = reinterpret_cast<int *>(malloc(Nbytes));
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CHECK(hipMalloc(&A_d, Nbytes));
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for (int i = 0; i < NUM_THREADS; i++) {
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A_h[i] = 0;
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}
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CHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
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// Beginning of parallel region
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#pragma omp parallel num_threads(NUM_THREADS)
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{
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// fprintf(stderr, "Hello World... from OMP thread = %d\n",
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// omp_get_thread_num());
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hipLaunchKernelGGL(hip_helloworld, dim3(1), dim3(1), 0, 0,
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omp_get_thread_num(), A_d);
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}
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// Ending of parallel region
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hipStreamSynchronize(0);
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CHECK(hipMemcpy(A_h, A_d, Nbytes, hipMemcpyDeviceToHost));
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// printf("Device Results:\n");
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for (int i = 0; i < NUM_THREADS; i++) {
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// printf(" A_d[%d] = %d\n", i, A_h[i]);
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}
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printf("PASSED!\n");
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free(A_h);
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CHECK(hipFree(A_d));
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return 0;
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}
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