agodavar
13436a7e1f
Change-Id: I59d2e15b297b6ca2d5eee1a6dee642bdb01a3839
[ROCm/hip commit: d10124e1d7]
141 строка
4.7 KiB
C++
141 строка
4.7 KiB
C++
/*
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Copyright (c) 2019 - 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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// Simple test for hipExtLaunchMultiKernelMultiDevice API. It can be tested on
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// single GPU or multi GPUs.
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/* HIT_START
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* BUILD: %t %s ../../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 "hip/hip_runtime.h"
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#include "test_common.h"
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#include <stdio.h>
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#define MAX_GPUS 8
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/*
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* Square each element in the array A and write to array C.
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*/
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#define NUM_KERNEL_ARGS 3
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__global__ void
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vector_square(float *C_d, float *A_d, size_t N)
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{
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size_t offset = (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 = offset; i < N; i += stride) {
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C_d[i] = A_d[i] * A_d[i];
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}
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}
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int main(int argc, char *argv[])
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{
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float *A_d[MAX_GPUS], *C_d[MAX_GPUS];
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float *A_h, *C_h;
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size_t N = 1000000;
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size_t Nbytes = N * sizeof(float);
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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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printf ("info: didn't find any GPU!\n");
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return 0;
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}
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if (nGpu > MAX_GPUS) {
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nGpu = MAX_GPUS;
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}
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printf ("info: allocate host mem (%6.2f MB)\n", 2*Nbytes/1024.0/1024.0);
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A_h = (float*)malloc(Nbytes);
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HIPCHECK(A_h == 0 ? hipErrorOutOfMemory : hipSuccess );
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C_h = (float*)malloc(Nbytes);
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HIPCHECK(C_h == 0 ? hipErrorOutOfMemory : hipSuccess );
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// Fill with Phi + i
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for (size_t i = 0; i < N; i++)
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{
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A_h[i] = 1.618f + i;
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}
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const unsigned blocks = 512;
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const unsigned threadsPerBlock = 256;
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hipStream_t stream[MAX_GPUS];
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for (int i = 0; i < nGpu; i++) {
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HIPCHECK(hipSetDevice(i));
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HIPCHECK(hipStreamCreateWithFlags(&stream[i], hipStreamNonBlocking));
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hipDeviceProp_t props;
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HIPCHECK(hipGetDeviceProperties(&props, i/*deviceID*/));
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printf ("info: running on bus 0x%2x %s\n", props.pciBusID, props.name);
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printf ("info: allocate device mem (%6.2f MB)\n", 2*Nbytes/1024.0/1024.0);
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HIPCHECK(hipMalloc(&A_d[i], Nbytes));
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HIPCHECK(hipMalloc(&C_d[i], Nbytes));
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printf ("info: copy Host2Device\n");
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HIPCHECK ( hipMemcpy(A_d[i], A_h, Nbytes, hipMemcpyHostToDevice));
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}
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hipLaunchParams *launchParamsList = reinterpret_cast<hipLaunchParams *>(
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malloc(sizeof(hipLaunchParams)*nGpu));
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void *args[MAX_GPUS * NUM_KERNEL_ARGS];
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for (int i = 0; i < nGpu; i++) {
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args[i * NUM_KERNEL_ARGS] = &C_d[i];
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args[i * NUM_KERNEL_ARGS + 1] = &A_d[i];
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args[i * NUM_KERNEL_ARGS + 2] = &N;
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launchParamsList[i].func =
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reinterpret_cast<void *>(vector_square);
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launchParamsList[i].gridDim = dim3(blocks);
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launchParamsList[i].blockDim = dim3(threadsPerBlock);
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launchParamsList[i].sharedMem = 0;
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launchParamsList[i].stream = stream[i];
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launchParamsList[i].args = args + i * NUM_KERNEL_ARGS;
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}
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printf ("info: launch vector_square kernel with hipExtLaunchMultiKernelMultiDevice API\n");
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hipExtLaunchMultiKernelMultiDevice(launchParamsList, nGpu, 0);
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for (int j = 0; j < nGpu; j++) {
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hipStreamSynchronize(stream[j]);
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hipDeviceProp_t props;
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HIPCHECK(hipGetDeviceProperties(&props, j/*deviceID*/));
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printf ("info: checking result on bus 0x%2x %s\n", props.pciBusID, props.name);
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printf ("info: copy Device2Host\n");
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HIPCHECK( hipMemcpy(C_h, C_d[j], Nbytes, hipMemcpyDeviceToHost));
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printf ("info: check result\n");
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for (size_t i = 0; i < N; i++) {
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if (C_h[i] != A_h[i] * A_h[i]) {
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HIPCHECK(hipErrorUnknown);
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}
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}
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}
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printf ("PASSED!\n");
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}
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