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| 1 | +// clang-format off |
| 2 | +// RUN: cgeist %s %stdinclude %cudaopts -O3 -o %s.execm && %s.execm 1 10 10 10 10 |
| 3 | +// clang-format on |
| 4 | +/** |
| 5 | + * 2mm.c: This file is part of the PolyBench/C 3.2 test suite. |
| 6 | + * |
| 7 | + * |
| 8 | + * Contact: Louis-Noel Pouchet <pouchet@cse.ohio-state.edu> |
| 9 | + * Web address: http://polybench.sourceforge.net |
| 10 | + */ |
| 11 | +#include <math.h> |
| 12 | +#include <stdio.h> |
| 13 | +#include <stdlib.h> |
| 14 | +#include <string.h> |
| 15 | +#include <unistd.h> |
| 16 | + |
| 17 | +__global__ void kernel_A_mul_B(int ni, int nj, int nk, int nl, double alpha, |
| 18 | + double beta, double *tmp, double *A, double *B, |
| 19 | + double *C, double *D) { |
| 20 | + int i = blockDim.x * blockIdx.x + threadIdx.x; |
| 21 | + int j = blockDim.y * blockIdx.y + threadIdx.y; |
| 22 | + int k; |
| 23 | + double dot = 0.0; |
| 24 | + |
| 25 | + if (i < ni && j < nj) { |
| 26 | + for (k = 0; k < nk; k++) |
| 27 | + dot += alpha * A[i * nk + k] * B[k * nj + j]; |
| 28 | + tmp[i * nj + j] = dot; |
| 29 | + } |
| 30 | +} |
| 31 | + |
| 32 | +__global__ void kernel_D_plus_tmp_mul_C(int ni, int nj, int nk, int nl, |
| 33 | + double alpha, double beta, double *tmp, |
| 34 | + double *A, double *B, double *C, |
| 35 | + double *D) { |
| 36 | + int i = blockDim.x * blockIdx.x + threadIdx.x; |
| 37 | + int l = blockDim.y * blockIdx.y + threadIdx.y; |
| 38 | + int j; |
| 39 | + double dot = 0.0; |
| 40 | + |
| 41 | + if (i < ni && l < nl) { |
| 42 | + // D[i * nj + l] *= beta; |
| 43 | + dot = D[i * nj + l] * beta; |
| 44 | + |
| 45 | + for (j = 0; j < nj; j++) |
| 46 | + // D[i * nl + l] += tmp[i * nj + j] * C[j * nl + l]; |
| 47 | + dot += tmp[i * nj + j] * C[j * nl + l]; |
| 48 | + D[i * nl + l] = dot; |
| 49 | + } |
| 50 | +} |
| 51 | + |
| 52 | +short num_blocks(short num, short factor) { |
| 53 | + return (num + factor - 1) / factor; |
| 54 | +} |
| 55 | + |
| 56 | +static void kernel(int ni, int nj, int nk, int nl, double alpha, double beta, |
| 57 | + double *tmp, double *A, double *B, double *C, double *D) { |
| 58 | + |
| 59 | + unsigned threadsPerBlock = 256; |
| 60 | + dim3 block(threadsPerBlock / 32, 32, 1); |
| 61 | + |
| 62 | + { |
| 63 | + dim3 grid(num_blocks(ni, block.x), num_blocks(nj, block.y), 1); |
| 64 | + kernel_A_mul_B<<<grid, block>>>(ni, nj, nk, nl, alpha, beta, tmp, A, B, C, |
| 65 | + D); |
| 66 | + } |
| 67 | + |
| 68 | + { |
| 69 | + dim3 grid(num_blocks(ni, block.x), num_blocks(nl, block.y), 1); |
| 70 | + kernel_D_plus_tmp_mul_C<<<grid, block>>>(ni, nj, nk, nl, alpha, beta, tmp, |
| 71 | + A, B, C, D); |
| 72 | + } |
| 73 | +} |
| 74 | + |
| 75 | +static void print_array(int ni, int nl, double *D) { |
| 76 | + int i, j; |
| 77 | + |
| 78 | + for (i = 0; i < ni; i++) |
| 79 | + for (j = 0; j < nl; j++) { |
| 80 | + fprintf(stderr, "%0.2lf ", D[i * ni + j]); |
| 81 | + if ((i * ni + j) % 20 == 0) |
| 82 | + fprintf(stderr, "\n"); |
| 83 | + } |
| 84 | + fprintf(stderr, "\n"); |
| 85 | +} |
| 86 | + |
| 87 | +static void init_array(int ni, int nj, int nk, int nl, double *A, double *B, |
| 88 | + double *C, double *D, double *tmp) { |
| 89 | + int i, j; |
| 90 | + |
| 91 | + for (i = 0; i < ni; i++) |
| 92 | + for (j = 0; j < nk; j++) |
| 93 | + A[i * ni + j] = ((double)i * j) / ni; |
| 94 | + for (i = 0; i < nk; i++) |
| 95 | + for (j = 0; j < nj; j++) |
| 96 | + B[i * nk + j] = ((double)i * (j + 1)) / nj; |
| 97 | + for (i = 0; i < nl; i++) |
| 98 | + for (j = 0; j < nj; j++) |
| 99 | + C[i * nl + j] = ((double)i * (j + 3)) / nl; |
| 100 | + for (i = 0; i < ni; i++) |
| 101 | + for (j = 0; j < nl; j++) |
| 102 | + D[i * ni + j] = ((double)i * (j + 2)) / nk; |
| 103 | + for (i = 0; i < ni; i++) |
| 104 | + for (j = 0; j < nj; j++) |
| 105 | + tmp[i * ni + j] = 0; |
| 106 | +} |
| 107 | + |
| 108 | +int main(int argc, char **argv) { |
| 109 | + int dump_code = atoi(argv[1]); |
| 110 | + long ni = atoi(argv[2]); |
| 111 | + long nj = atoi(argv[3]); |
| 112 | + long nk = atoi(argv[4]); |
| 113 | + long nl = atoi(argv[5]); |
| 114 | + |
| 115 | + double alpha = 32412; |
| 116 | + double beta = 2123; |
| 117 | + double *A = (double *)malloc(ni * nk * sizeof(double)); |
| 118 | + double *B = (double *)malloc(nk * nj * sizeof(double)); |
| 119 | + double *C = (double *)malloc(nl * nj * sizeof(double)); |
| 120 | + double *D = (double *)malloc(ni * nl * sizeof(double)); |
| 121 | + double *tmp = (double *)malloc(ni * nj * sizeof(double)); |
| 122 | + |
| 123 | + init_array(ni, nj, nk, nl, A, B, C, D, tmp); |
| 124 | + |
| 125 | + double *dev_A; |
| 126 | + double *dev_B; |
| 127 | + double *dev_C; |
| 128 | + double *dev_D; |
| 129 | + double *dev_tmp; |
| 130 | + double *dev_alpha; |
| 131 | + double *dev_beta; |
| 132 | + cudaMalloc(&dev_A, ni * nk * sizeof(double)); |
| 133 | + cudaMalloc(&dev_B, nk * nj * sizeof(double)); |
| 134 | + cudaMalloc(&dev_C, nl * nj * sizeof(double)); |
| 135 | + cudaMalloc(&dev_D, ni * nl * sizeof(double)); |
| 136 | + cudaMalloc(&dev_tmp, ni * nj * sizeof(double)); |
| 137 | + cudaMemcpy(dev_A, A, ni * nk * sizeof(double), cudaMemcpyHostToDevice); |
| 138 | + cudaMemcpy(dev_B, B, nk * nj * sizeof(double), cudaMemcpyHostToDevice); |
| 139 | + cudaMemcpy(dev_C, C, nl * nj * sizeof(double), cudaMemcpyHostToDevice); |
| 140 | + cudaMemcpy(dev_D, D, ni * nl * sizeof(double), cudaMemcpyHostToDevice); |
| 141 | + cudaMemcpy(dev_tmp, tmp, ni * nj * sizeof(double), cudaMemcpyHostToDevice); |
| 142 | + |
| 143 | + kernel(ni, nj, nk, nl, alpha, beta, dev_tmp, dev_A, dev_B, dev_C, dev_D); |
| 144 | + |
| 145 | + cudaMemcpy(D, dev_D, ni * nl * sizeof(double), cudaMemcpyDeviceToHost); |
| 146 | + cudaFree((void *)dev_A); |
| 147 | + cudaFree((void *)dev_B); |
| 148 | + cudaFree((void *)dev_C); |
| 149 | + cudaFree((void *)dev_D); |
| 150 | + cudaFree((void *)dev_tmp); |
| 151 | + cudaFree((void *)dev_alpha); |
| 152 | + cudaFree((void *)dev_beta); |
| 153 | + |
| 154 | + if (dump_code == 1) |
| 155 | + print_array(ni, nk, D); |
| 156 | + |
| 157 | + free((void *)tmp); |
| 158 | + ; |
| 159 | + free((void *)A); |
| 160 | + ; |
| 161 | + free((void *)B); |
| 162 | + ; |
| 163 | + free((void *)C); |
| 164 | + ; |
| 165 | + free((void *)D); |
| 166 | + ; |
| 167 | + |
| 168 | + return 0; |
| 169 | +} |
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