OpenBLAS/benchmark/trsv.c

/***************************************************************************
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#include "bench.h"

#undef GEMV
#undef TRSV

#ifndef COMPLEX

#ifdef DOUBLE
#define TRSV   BLASFUNC(dtrsv)
#else
#define TRSV   BLASFUNC(strsv)
#endif

#else

#ifdef DOUBLE
#define TRSV   BLASFUNC(ztrsv)
#else
#define TRSV   BLASFUNC(ctrsv)
#endif

#endif

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

  FLOAT *a, *x;
  blasint n = 0, i, j;
  blasint inc_x=1;
  int loops = 1;
  int l;
  char *p;

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

  time_t seconds = 0;

  double time1,timeg;
  long long nanos = 0;

  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++;}

  char uplo ='L';
  char transa = 'N';
  char diag ='U';

  if ((p = getenv("OPENBLAS_LOOPS")))  loops = atoi(p);
  if ((p = getenv("OPENBLAS_INCX")))   inc_x = atoi(p);
  if ((p = getenv("OPENBLAS_TRANSA")))  transa=*p;
  if ((p = getenv("OPENBLAS_DIAG")))  diag=*p;
  if ((p = getenv("OPENBLAS_UPLO")))  uplo=*p;

  fprintf(stderr, "From : %3d  To : %3d Step = %3d Transa = '%c' Inc_x = %d uplo=%c diag=%c loop = %d\n", from, to, step,transa,inc_x,
          uplo,diag,loops);


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

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

  for(n = from; n <= to; n += step)
  {
      timeg=0;
      if (( a = (FLOAT *)malloc(sizeof(FLOAT) * n * n * COMPSIZE)) == NULL){
          fprintf(stderr,"Out of Memory!!\n");exit(1);
      }

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

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

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

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

          begin();
          TRSV(&uplo,&transa,&diag,&n,a,&n,x,&inc_x);
          end();
          time1 = getsec();
          timeg += time1;
      }

      timeg /= loops;
      long long muls = n*(n+1)/2.0;
      long long adds = (n - 1.0)*n/2.0;

      fprintf(stderr, "%10d :   %10.2f MFlops %10.6f sec\n", n,(muls+adds) / timeg * 1.e-6, timeg);
      if(a != NULL){
        free(a);
      }

      if( x != NULL){
        free(x);
      }

  }

  return 0;
}