95 lines
2.1 KiB
C++
95 lines
2.1 KiB
C++
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#include "util.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <math.h>
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#include <sys/time.h>
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#include <omp.h>
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static double start_time[8];
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static double get_time() {
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struct timeval tv;
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gettimeofday(&tv, 0);
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return tv.tv_sec + tv.tv_usec * 1e-6;
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}
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void timer_start(int i) {
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start_time[i] = get_time();
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}
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double timer_stop(int i) {
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return get_time() - start_time[i];
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}
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void check_mat_mul(float *A, float *B, float *C, int M, int N, int K) {
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printf("Validating...\n");
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float *C_ans;
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alloc_mat(&C_ans, M, N);
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zero_mat(C_ans, M, N);
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#pragma omp parallel for num_threads(20)
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for (int i = 0; i < M; ++i) {
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for (int k = 0; k < K; ++k) {
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for (int j = 0; j < N; ++j) {
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C_ans[i * N + j] += A[i * K + k] * B[k * N + j];
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}
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}
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}
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bool is_valid = true;
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int cnt = 0, thr = 10;
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float eps = 1e-3;
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for (int i = 0; i < M; ++i) {
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for (int j = 0; j < N; ++j) {
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float c = C[i * N + j];
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float c_ans = C_ans[i * N + j];
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if (fabsf(c - c_ans) > eps && (c_ans == 0 || fabsf((c - c_ans) / c_ans) > eps)) {
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++cnt;
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if (cnt <= thr)
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printf("C[%d][%d] : correct_value = %f, your_value = %f\n", i, j, c_ans, c);
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if (cnt == thr + 1)
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printf("Too many error, only first %d values are printed.\n", thr);
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is_valid = false;
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}
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}
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}
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if (is_valid) {
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printf("Result: VALID\n");
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} else {
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printf("Result: INVALID\n");
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}
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}
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void print_mat(float *m, int R, int C) {
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for (int i = 0; i < R; ++i) {
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for (int j = 0; j < C; ++j) {
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printf("%+.3f ", m[i * C + j]);
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}
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printf("\n");
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}
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}
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void alloc_mat(float **m, int R, int C) {
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*m = (float *) aligned_alloc(32, sizeof(float) * R * C);
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if (*m == NULL) {
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printf("Failed to allocate memory for matrix.\n");
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exit(0);
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}
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}
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void rand_mat(float *m, int R, int C) {
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for (int i = 0; i < R; i++) {
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for (int j = 0; j < C; j++) {
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m[i * C + j] = (float) rand() / RAND_MAX - 0.5;
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}
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}
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}
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void zero_mat(float *m, int R, int C) {
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memset(m, 0, sizeof(float) * R * C);
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}
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