hemv.c

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#include "bench.h"

#undef HEMV

#ifdef DOUBLE
#define HEMV   BLASFUNC(zhemv)
#else
#define HEMV   BLASFUNC(chemv)
#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[(long)i + (long)j * (long)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();

    	HEMV (&uplo, &m, alpha, a, &m, 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__")));