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113 lines
3.8 KiB
C
113 lines
3.8 KiB
C
#include "geostat.h"
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#include "log.h"
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#include "memory.h"
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#include <time.h>
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/*builds the sampled covariance function*/
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/*dimensions are even*/
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void covariance(double* covar, struct vario_mod variogram, struct grid_mod mesh, int n[3], int cores) {
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double* used_ram_t0 = malloc(sizeof(double));
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getVirtualMemUsed(used_ram_t0);
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clock_t t = clock();
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int i, j, k, maille, n2[3], symmetric;
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double di, dj, dk;
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log_info("RESULT = in progress");
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struct cpustat initial[cores];
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struct cpustat final[cores];
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for (int i = 0; i < cores; i++) {
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get_stats(&initial[i], i - 1);
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}
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for (i = 0; i < 3; i++)
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n2[i] = n[i] / 2;
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for (i = 0; i <= n2[0]; i++) {
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for (j = 0; j <= n2[1]; j++) {
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for (k = 0; k <= n2[2]; k++) {
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/*area 1*/
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maille = 1 + i + n[0] * (j + n[1] * k);
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di = (double)i * mesh.DX;
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dj = (double)j * mesh.DY;
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dk = (double)k * mesh.DZ;
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covar[maille] = (double)cov_value(variogram, di, dj, dk, cores);
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if (k > 0 && k < n2[2] && j > 0 && j < n2[1] && i > 0 && i < n2[0]) {
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/*area 2*/
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symmetric = 1 + n[0] - i + n[0] * (n[1] - j + n[1] * (n[2] - k));
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covar[symmetric] = covar[maille];
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}
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if (i > 0 && i < n2[0]) {
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/*area 4*/
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di = -(double)i * mesh.DX;
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dj = (double)j * mesh.DY;
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dk = (double)k * mesh.DZ;
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maille = 1 + (n[0] - i) + n[0] * (j + n[1] * k);
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covar[maille] = (double)cov_value(variogram, di, dj, dk, cores);
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}
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if (k > 0 && k < n2[2] && j > 0 && j < n2[1]) {
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/*area 8*/
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symmetric = 1 + i + n[0] * (n[1] - j + n[1] * (n[2] - k));
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covar[symmetric] = covar[maille];
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}
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if (i > 0 && i < n2[0] && j > 0 && j < n2[1]) {
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/*area 5*/
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di = -(double)i * mesh.DX;
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dj = -(double)j * mesh.DY;
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dk = (double)k * mesh.DZ;
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maille = 1 + (n[0] - i) + n[0] * (n[1] - j + n[1] * k);
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covar[maille] = (double)cov_value(variogram, di, dj, dk, cores);
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}
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if (k > 0 && k < n2[2]) {
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/*area 6*/
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symmetric = 1 + i + n[0] * (j + n[1] * (n[2] - k));
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covar[symmetric] = covar[maille];
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}
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if (j > 0 && j < n2[1]) {
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/*area 3*/
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di = (double)i * mesh.DX;
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dj = -(double)j * mesh.DY;
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dk = (double)k * mesh.DZ;
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maille = 1 + i + n[0] * (n[1] - j + n[1] * k);
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covar[maille] = (double)cov_value(variogram, di, dj, dk, cores);
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}
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if (k > 0 && k < n2[2] && i > 0 && i < n2[0]) {
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/*area 7*/
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symmetric = 1 + n[0] - i + n[0] * (j + n[1] * (n[2] - k));
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covar[symmetric] = covar[maille];
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}
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}
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}
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}
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t = clock() - t;
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double time_taken = ((double)t)/CLOCKS_PER_SEC; // calculate the elapsed time
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for (int i = 0; i < cores; i++) {
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get_stats(&final[i], i - 1);
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}
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for (int i = 0; i < cores; i++) {
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log_info("CPU %d: %lf%%", i, calculate_load(&initial[i], &final[i]));
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}
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double* used_ram_tf = malloc(sizeof(double));
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getVirtualMemUsed(used_ram_tf);
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log_info("RESULT = success, di = %f, dj = %f, dk = %f, ELAPSED = %f seconds, DIF USED VIRTUAL MEM = %5.1f MB", di, dj, dk, time_taken, *used_ram_tf - *used_ram_t0);
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free(used_ram_t0);
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free(used_ram_tf);
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}
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