agunashe
127 líneas
3.9 KiB
C++
127 líneas
3.9 KiB
C++
/*
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Copyright (c) 2015 - 2021 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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/* HIT_START
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* BUILD: %t %s ../../src/test_common.cpp EXCLUDE_HIP_PLATFORM nvidia
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* TEST: %t
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* HIT_END
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*/
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#include <iostream>
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#include <chrono>
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#include "test_common.h"
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using namespace std;
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#define arraySize 16
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typedef struct d_uint16 {
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uint data[arraySize];
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} d_uint16;
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__global__ void write_kernel(d_uint16 *dst, ulong N, d_uint16 pval) {
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size_t idx = (blockIdx.x * blockDim.x + threadIdx.x);
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size_t stride = blockDim.x * gridDim.x;
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for (size_t i = idx; i < N; i += stride) {
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dst[i] = pval;
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}
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};
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int main(int argc, char* argv[]) {
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d_uint16 *dDst;
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d_uint16 *hDst;
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hipStream_t stream;
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ulong N = 4 * 1024 * 1024;
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uint nBytes = N * sizeof(d_uint16);
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d_uint16 pval;
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for (int i = 0; i < arraySize; i++) {
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pval.data[i] = 0xabababab;
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}
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int nGpu = 0;
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HIPCHECK(hipGetDeviceCount(&nGpu));
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if (nGpu < 1) {
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cout << "info: didn't find any GPU! skipping the test!\n";
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passed();
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return 0;
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}
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static int device = 0;
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HIPCHECK(hipSetDevice(device));
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hipDeviceProp_t props;
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HIPCHECK(hipGetDeviceProperties(&props, device));
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cout << "info: running on bus " << "0x" << props.pciBusID << " " << props.name <<
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" with " << props.multiProcessorCount << " CUs" << endl;
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size_t threadsPerBlock = 64;
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size_t blocks = props.multiProcessorCount * 4;
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uint inputData = 0xabababab;
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int nIter = 1000;
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hDst = new d_uint16[nBytes];
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HIPCHECK(hDst == 0 ? hipErrorOutOfMemory : hipSuccess);
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for (size_t i = 0; i < N; i++) {
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for (size_t j = 0; j < arraySize; j++) {
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hDst[i].data[j] = 0;
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}
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}
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HIPCHECK(hipMalloc(&dDst, nBytes));
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HIPCHECK(hipStreamCreate(&stream));
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hipLaunchKernelGGL(write_kernel, dim3(blocks), dim3(threadsPerBlock), 0, stream, dDst, N, pval);
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HIPCHECK(hipMemcpy(hDst, dDst, nBytes , hipMemcpyDeviceToHost));
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hipDeviceSynchronize();
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for (uint i = 0; i < N; i++) {
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for (uint j = 0; j < arraySize; j++) {
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if (hDst[i].data[j] != inputData) {
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cout << "info: Data validation failed for warm up run! " << endl;
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cout << "at index i: " << i << " element j: " << j << endl;
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cout << hex << "expected 0x" << inputData << " but got 0x" << hDst[i].data[j] << endl;
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HIPCHECK(hipErrorUnknown);
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}
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}
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}
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auto all_start = chrono::steady_clock::now();
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for(int i = 0; i < nIter; i++) {
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hipLaunchKernelGGL(write_kernel, dim3(blocks), dim3(threadsPerBlock), 0, stream, dDst, N, pval);
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}
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hipDeviceSynchronize();
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auto all_end = chrono::steady_clock::now();
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chrono::duration<double> all_kernel_time = all_end - all_start;
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// read speed in GB/s
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double perf = ((double)nBytes * nIter * (double)(1e-09)) / all_kernel_time.count();
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cout << "info: average write speed of " << perf << " GB/s " << "achieved for memory size of " <<
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nBytes / (1024 * 1024) << " MB" << endl;
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delete [] hDst;
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hipFree(dDst);
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HIPCHECK(hipStreamDestroy(stream));
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passed();
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}
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