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switch to heap memory in benchmark()

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AustrianToast 2024-10-08 23:04:09 +02:00
parent 55480a727e
commit d8c3a75d50
Signed by: AustrianToast
GPG Key ID: 1B4D0AAF6E558816
1 changed files with 18 additions and 32 deletions
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50
main.c
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@ -2,29 +2,33 @@
#include "matrix.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
void benchmark() {
const uint64_t row_length1 = 100, column_length1 = 100;
uint64_t matrix1[row_length1][column_length1];
const uint64_t vertex_count1 = 1024;
// printf("vertex_count1 * vertex_count1 * sizeof(uint64_t) = %lu bytes\n", vertex_count1 * vertex_count1 * sizeof(uint64_t));
// printf("sizeof(uint64_t[vertex_count1][vertex_count1] = %lu bytes\n", sizeof(uint64_t[vertex_count1][vertex_count1]));
// return;
uint64_t (*matrix1)[vertex_count1] = malloc(vertex_count1 * vertex_count1 * sizeof(uint64_t));
const uint64_t row_length2 = 100, column_length2 = 100;
uint64_t matrix2[row_length2][column_length2];
const uint64_t vertex_count2 = 1024;
uint64_t (*matrix2)[vertex_count2] = malloc(vertex_count2 * vertex_count2 * sizeof(uint64_t));
uint64_t new_matrix[row_length1][column_length2];
uint64_t (*new_matrix)[vertex_count2] = malloc(vertex_count1 * vertex_count2 * sizeof(uint64_t));
double elapsed_time = 0.0;
const uint64_t iterations = 10000;
const uint64_t iterations = 1;
clock_t start_time;
for (uint64_t i = 0; i < iterations; i++) {
random_adjacency(row_length1, matrix1);
random_adjacency(row_length2, matrix2);;
random_adjacency(vertex_count1, matrix1);
random_adjacency(vertex_count2, matrix2);
start_time = clock();
matrix_multiply_basic(row_length1, column_length1, matrix1,
row_length2, column_length2, matrix2,
matrix_multiply_basic(vertex_count1, vertex_count1, matrix1,
vertex_count2, vertex_count2, matrix2,
new_matrix);
elapsed_time += (double)(clock() - start_time) / CLOCKS_PER_SEC;
@ -32,6 +36,10 @@ void benchmark() {
printf("%lu iterations of matrix_multiply_basic took roughly %f seconds\n", iterations, elapsed_time);
printf("An iteration of matrix_multiply_basic took on average roughly %f seconds\n", elapsed_time/iterations);
free(matrix1);
free(matrix2);
free(new_matrix);
}
void test() {
@ -44,28 +52,6 @@ void test() {
print_matrix(vertex_count, vertex_count, adjacency_matrix);
puts("");
// uint64_t new_matrix1[vertex_count][vertex_count];
//
// matrix_multiply_basic(vertex_count, vertex_count, adjacency_matrix,
// vertex_count, vertex_count, adjacency_matrix,
// new_matrix1);
//
// puts("G²:");
// print_matrix(vertex_count, vertex_count, new_matrix1);
// puts("");
//
// uint64_t new_matrix2[vertex_count][vertex_count];
//
// copy(vertex_count, vertex_count, new_matrix1, new_matrix2);
//
// matrix_multiply_basic(vertex_count, vertex_count, new_matrix1,
// vertex_count, vertex_count, adjacency_matrix,
// new_matrix2);
//
// puts("G³:");
// print_matrix(vertex_count, vertex_count, new_matrix2);
// puts("");
uint64_t distance_matrix[vertex_count][vertex_count];
calculate_distance_matrix(vertex_count, adjacency_matrix, distance_matrix);