| /* |
| Copyright (c) 2015-2016 Advanced Micro Devices, Inc. All rights reserved. |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in |
| all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| THE SOFTWARE. |
| */ |
| |
| #include <stdio.h> |
| #include "hip/hip_runtime.h" |
| |
| #define CHECK(cmd) \ |
| {\ |
| hipError_t error = cmd;\ |
| if (error != hipSuccess) { \ |
| fprintf(stderr, "error: '%s'(%d) at %s:%d\n", hipGetErrorString(error), error,__FILE__, __LINE__); \ |
| exit(EXIT_FAILURE);\ |
| }\ |
| } |
| |
| /* |
| * Square each element in the array A and write to array C. |
| */ |
| template <typename T> |
| __global__ void |
| vector_square(T *C_d, const T *A_d, size_t N) |
| { |
| size_t offset = (hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x); |
| size_t stride = hipBlockDim_x * hipGridDim_x ; |
| |
| for (size_t i=offset; i<N; i+=stride) { |
| C_d[i] = A_d[i] * A_d[i]; |
| } |
| } |
| |
| |
| int main(int argc, char *argv[]) |
| { |
| float *A_h, *C_h; |
| size_t N = 1000000; |
| size_t Nbytes = N * sizeof(float); |
| |
| hipDeviceProp_t props; |
| CHECK(hipGetDeviceProperties(&props, 0/*deviceID*/)); |
| printf ("info: running on device %s\n", props.name); |
| #ifdef __HIP_PLATFORM_HCC__ |
| printf ("info: architecture on AMD GPU device is: %d\n",props.gcnArch); |
| #endif |
| printf ("info: allocate host and device mem (%6.2f MB)\n", 2*Nbytes/1024.0/1024.0); |
| CHECK(hipHostMalloc(&A_h, Nbytes)); |
| CHECK(hipHostMalloc(&C_h, Nbytes)); |
| // Fill with Phi + i |
| for (size_t i=0; i<N; i++) |
| { |
| A_h[i] = 1.618f + i; |
| } |
| |
| const unsigned blocks = 512; |
| const unsigned threadsPerBlock = 256; |
| |
| printf ("info: launch 'vector_square' kernel\n"); |
| hipLaunchKernelGGL(vector_square, dim3(blocks), dim3(threadsPerBlock), 0, 0, C_h, A_h, N); |
| hipDeviceSynchronize(); |
| |
| printf ("info: check result\n"); |
| for (size_t i=0; i<N; i++) { |
| if (C_h[i] != A_h[i] * A_h[i]) { |
| CHECK(hipErrorUnknown); |
| } |
| } |
| printf ("PASSED!\n"); |
| return 0; |
| } |
| |