gemv.c

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#include "bench.h"


#undef GEMV

#ifndef COMPLEX

#ifdef DOUBLE
#define GEMV   BLASFUNC(dgemv)
#else
#define GEMV   BLASFUNC(sgemv)
#endif

#else

#ifdef DOUBLE
#define GEMV   BLASFUNC(zgemv)
#else
#define GEMV   BLASFUNC(cgemv)
#endif

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

  FLOAT *a, *x, *y;
  FLOAT alpha[] = {1.0, 1.0};
  FLOAT beta [] = {1.0, 0.0};
  char trans='N';
  blasint m, i, j;
  blasint inc_x=1,inc_y=1;
  blasint n=0;
  int has_param_n = 0;
  int has_param_m = 0;
  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++;}


  int tomax = to;

  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_TRANS")))  trans=*p;
  if ((p = getenv("OPENBLAS_PARAM_N"))) {
	  n = atoi(p);
	  if ((n>0)) has_param_n = 1;
  	  if ( n > tomax ) tomax = n;
  }
  if ( has_param_n == 0 )
  	if ((p = getenv("OPENBLAS_PARAM_M"))) {
		  m = atoi(p);
		  if ((m>0)) has_param_m = 1;
  	  	  if ( m > tomax ) tomax = m;
  	}



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

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

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

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

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

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

  if (has_param_m == 0)
  {

  	for(m = from; m <= to; m += step)
  	{
   		timeg=0;
   		if ( has_param_n == 0 ) n = m;
   		fprintf(stderr, " %6dx%d : ", (int)m,(int)n);
   		for(j = 0; j < m; j++){
      			for(i = 0; i < n * 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 < n * 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();
    			GEMV (&trans, &m, &n, alpha, a, &m, x, &inc_x, beta, y, &inc_y );
    			end();
    			time1 = getsec();
			timeg += time1;

    		}

    		timeg /= loops;

    		fprintf(stderr, " %10.2f MFlops %10.6f sec\n", COMPSIZE * COMPSIZE * 2. * (double)m * (double)n / timeg * 1.e-6, timeg);

  	}
  }
  else
  {

  	for(n = from; n <= to; n += step)
  	{
   		timeg=0;
   		fprintf(stderr, " %6dx%d : ", (int)m,(int)n);
   		for(j = 0; j < m; j++){
      			for(i = 0; i < n * 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 < n * 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();
    			GEMV (&trans, &m, &n, alpha, a, &m, x, &inc_x, beta, y, &inc_y );
    			end();
    			time1 = getsec();
			timeg += time1;

    		}

    		timeg /= loops;

    		fprintf(stderr, " %10.2f MFlops %10.6f sec\n", COMPSIZE * COMPSIZE * 2. * (double)m * (double)n / timeg * 1.e-6, timeg);

  	}
  }

  return 0;
}

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