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78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
#include "geostat.h"
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#include "log.h"
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#include "memory.h"
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#include <math.h>
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#include <stdarg.h>
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#include <stddef.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 <time.h>
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/* build_real */
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/* build a realization in the spectral domain */
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/*n: vector with the number of cells along the */
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/* X, Y and Z axes for the underlying grid */
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/* i = [0 1 2] */
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/* --> 0 0 0 : n will be computed and */
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/* updated as output */
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/* --> nx ny nz: these dimensions are used */
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/*covar: vector defining the covariance in spectral domain */
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/*realization: vector defining the real part */
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/*ireal: vector defining the i-part */
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void build_real(int n[3], int NTOT, double* covar, double* realization, double* ireal, 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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int i, j, k, maille1;
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double temp;
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log_info("RESULT = in progress, NTOT = %d, covar = %f, n[0] = %d, n[1] = %d, n[2] = %d", NTOT, *covar, n[0], n[1], n[2]);
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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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clock_t t = clock();
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/*decomposition and multiplication in the spectral domain*/
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for (k = 1; k <= n[2]; k++) {
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for (j = 1; j <= n[1]; j++) {
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for (i = 1; i <= n[0]; i++) {
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maille1 = i + (j - 1 + (k - 1) * n[1]) * n[0];
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temp = covar[maille1];
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if (temp > 0.) {
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temp = sqrt(temp) / (double)NTOT;
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} else if (temp < 0.) {
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temp = sqrt(-temp) / (double)NTOT;
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}
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realization[maille1] *= temp;
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ireal[maille1] *= temp;
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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, realization = %f, ireal = %f, ELAPSED = %f seconds, DIF USED VIRTUAL MEM = %5.1f MB", *realization, *ireal, 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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