74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
#include <math.h>
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#include <omp.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "common.h"
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int main(int argc, char **argv) {
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char *data_file_name = argv[1], *label_file_name = argv[2];
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int outer_iterations = atoi(argv[3]);
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int thread_count = atoi(argv[4]);
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omp_set_num_threads(8);
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struct data *data = read_data(data_file_name);
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struct labels *label = read_labels(label_file_name);
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printf("Running %d iteration(s) with %d thread(s).\n", outer_iterations,
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thread_count);
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FLOAT *w = calloc(data->dimensions, sizeof(FLOAT));
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for (int iter = 0; iter < outer_iterations; iter++) {
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double start_time = monotonic_seconds();
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FLOAT *new_w = calloc(data->dimensions, sizeof(FLOAT));
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#pragma omp parallel for default(shared)
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for (int i = 0; i < data->dimensions; i++) {
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FLOAT *ouais = calloc(data->rows, sizeof(FLOAT));
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#pragma omp parallel for default(shared)
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for (int j = 0; j < data->rows; j++) {
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FLOAT x_ni_w_ni = 0;
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#pragma omp parallel for default(shared) reduction(+ : x_ni_w_ni)
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for (int i2 = 0; i2 < data->dimensions; i2++) {
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if (i2 == i)
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continue;
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x_ni_w_ni = data->buf[data->rows * i2 + j] * w[i2];
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}
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ouais[j] = label->buf[j] - x_ni_w_ni;
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}
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FLOAT numer = 0, denom = 0;
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#pragma omp parallel for default(shared) reduction(+ : numer, denom)
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for (int j = 0; j < data->rows; j++) {
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FLOAT xij = data->buf[data->dimensions * i + j];
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numer = xij * ouais[j];
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denom = xij * xij;
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}
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free(ouais);
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new_w[i] = numer / denom;
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}
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printf("Done.\n");
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for (int idx = 0; idx < data->dimensions; idx++) {
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printf("%.3f ", new_w[idx]);
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}
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printf("\n");
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free(w);
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w = new_w;
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double end_time = monotonic_seconds();
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print_time(end_time - start_time);
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}
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free(w);
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return 0;
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} |