97 lines
3.0 KiB
C++
97 lines
3.0 KiB
C++
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/*
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Copyright (c) 2015-2016 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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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <algorithm>
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#include <iostream>
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#include "hip/hip_runtime.h"
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#define WIDTH 256
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#define HEIGHT 128
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#define NUM (WIDTH * HEIGHT)
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#define THREADS_PER_BLOCK_X 8
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#define THREADS_PER_BLOCK_Y 8
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#define THREADS_PER_BLOCK_Z 1
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__global__ void vectoradd_att(float* __restrict__ a, const float* __restrict__ b,
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const float* __restrict__ c, int width, int height)
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{
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int x = blockDim.x * blockIdx.x + threadIdx.x;
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int y = blockDim.y * blockIdx.y + threadIdx.y;
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int i = y * width + x;
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if (i < width * height)
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a[i] = b[i] + c[i];
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}
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int main() {
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float* hostA;
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float* hostB;
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float* hostC;
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float* deviceA;
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float* deviceB;
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float* deviceC;
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hipDeviceProp_t devProp;
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hipGetDeviceProperties(&devProp, 0);
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hostA = reinterpret_cast<float*>(malloc(NUM * sizeof(float)));
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hostB = reinterpret_cast<float*>(malloc(NUM * sizeof(float)));
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hostC = reinterpret_cast<float*>(malloc(NUM * sizeof(float)));
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// initialize the input data
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for (size_t i = 0; i < NUM; i++) {
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hostB[i] = static_cast<float>(i);
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hostC[i] = static_cast<float>(i) * 100.0f;
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}
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hipMalloc(reinterpret_cast<void**>(&deviceA), NUM * sizeof(float));
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hipMalloc(reinterpret_cast<void**>(&deviceB), NUM * sizeof(float));
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hipMalloc(reinterpret_cast<void**>(&deviceC), NUM * sizeof(float));
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hipMemcpy(deviceB, hostB, NUM * sizeof(float), hipMemcpyHostToDevice);
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hipMemcpy(deviceC, hostC, NUM * sizeof(float), hipMemcpyHostToDevice);
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hipLaunchKernelGGL(vectoradd_att,
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dim3(WIDTH / THREADS_PER_BLOCK_X, HEIGHT / THREADS_PER_BLOCK_Y),
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dim3(THREADS_PER_BLOCK_X, THREADS_PER_BLOCK_Y),
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0, 0, deviceA, deviceB, deviceC, WIDTH, HEIGHT);
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hipMemcpy(hostA, deviceA, NUM * sizeof(float), hipMemcpyDeviceToHost);
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hipFree(deviceA);
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hipFree(deviceB);
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hipFree(deviceC);
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free(hostA);
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free(hostB);
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free(hostC);
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return 0;
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}
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