OpenBLAS/benchmark/hpmv.c

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#include "bench.h"

#undef HPMV

#ifdef DOUBLE
#define HPMV   BLASFUNC(zhpmv)
#else
#define HPMV   BLASFUNC(chpmv)
#endif

int main(int argc, char *argv[]){

    FLOAT *a, *x, *y;
    FLOAT alpha[] = {1.0, 1.0};
    FLOAT beta [] = {1.0, 1.0};
    char uplo='L';
    blasint m, i, j;
    blasint inc_x=1, inc_y=1;
    int loops = 1;
    int l;
    char *p;

    int from =   1;
    int to   = 200;
    int step =   1;

    double time1,timeg;

    argc--;argv++;

    if (argc > 0) { from     = atol(*argv);		argc--; argv++;}
    if (argc > 0) { to       = MAX(atol(*argv), from);	argc--; argv++;}
    if (argc > 0) { step     = atol(*argv);		argc--; argv++;}

    if ((p = getenv("OPENBLAS_LOOPS")))  loops = atoi(p);
    if ((p = getenv("OPENBLAS_INCX")))   inc_x = atoi(p);
    if ((p = getenv("OPENBLAS_INCY")))   inc_y = atoi(p);
    if ((p = getenv("OPENBLAS_UPLO")))   uplo=*p;

    fprintf(stderr, "From : %3d  To : %3d Step = %3d Uplo = '%c' Inc_x = %d Inc_y = %d Loops = %d\n", from, to, step,uplo,inc_x,inc_y,loops);

    if (( a = (FLOAT *)malloc(sizeof(FLOAT) * to * to * COMPSIZE)) == NULL) {
        fprintf(stderr,"Out of Memory!!\n");
        exit(1);
    }

    if (( x = (FLOAT *)malloc(sizeof(FLOAT) * to * abs(inc_x) * COMPSIZE)) == NULL) {
        fprintf(stderr,"Out of Memory!!\n");
        exit(1);
    }

    if (( y = (FLOAT *)malloc(sizeof(FLOAT) * to * abs(inc_y) * COMPSIZE)) == NULL) {
        fprintf(stderr,"Out of Memory!!\n");
        exit(1);
    }

#ifdef __linux
    srandom(getpid());
#endif

    fprintf(stderr, "   SIZE       Flops\n");

    for(m = from; m <= to; m += step) {

        timeg=0;

        fprintf(stderr, " %6dx%d : ", (int)m, (int)m);

        for(j = 0; j < m; j++) {
            for(i = 0; i < m * COMPSIZE; i++) {
                a[i + j * m * COMPSIZE] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
            }
        }

    for (l = 0; l < loops; l++) {

        for (i = 0; i < m * COMPSIZE * abs(inc_x); i++) {
            x[i] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
        }

        for (i = 0; i < m * COMPSIZE * abs(inc_y); i++) {
            y[i] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
        }

        begin();

        HPMV (&uplo, &m, alpha, a, x, &inc_x, beta, y, &inc_y );

        end();

        time1 = getsec();

        timeg += time1;

    }

    timeg /= loops;

    fprintf(stderr, " %10.2f MFlops\n",
            COMPSIZE * COMPSIZE * 2. * (double)m * (double)m / timeg * 1.e-6);
    }

    return 0;
}

// void main(int argc, char *argv[]) __attribute__((weak, alias("MAIN__")));