OpenBLAS/benchmark/gemm.c

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#include "bench.h"

#undef GEMM

#ifndef COMPLEX

#ifdef DOUBLE
#define GEMM   BLASFUNC(dgemm)
#elif defined(HALF)
#define GEMM   BLASFUNC(sbgemm)
#else
#define GEMM   BLASFUNC(sgemm)
#endif

#else

#ifdef DOUBLE
#define GEMM   BLASFUNC(zgemm)
#else
#define GEMM   BLASFUNC(cgemm)
#endif

#endif

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

  IFLOAT *a, *b;
  FLOAT *c;
  FLOAT alpha[] = {1.0, 0.0};
  FLOAT beta [] = {0.0, 0.0};
  char transa = 'N';
  char transb = 'N';
  blasint m, n, k, i, j, lda, ldb, ldc;
  int loops = 1;
  int has_param_m = 0;
  int has_param_n = 0;
  int has_param_k = 0;
  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_TRANS"))) {
    transa=*p;
    transb=*p;
  }
  if ((p = getenv("OPENBLAS_TRANSA"))) {
    transa=*p;
  }
  if ((p = getenv("OPENBLAS_TRANSB"))) {
    transb=*p;
  }
  TOUPPER(transa);
  TOUPPER(transb);

  fprintf(stderr, "From : %3d  To : %3d Step=%d : Transa=%c : Transb=%c\n", from, to, step, transa, transb);

  p = getenv("OPENBLAS_LOOPS");
  if ( p != NULL ) {
    loops = atoi(p);
  }

  if ((p = getenv("OPENBLAS_PARAM_M"))) {
    m = atoi(p);
    has_param_m=1;
  } else {
    m = to;
  }
  if ((p = getenv("OPENBLAS_PARAM_N"))) {
    n = atoi(p);
    has_param_n=1;
  } else {
    n = to;
  }
  if ((p = getenv("OPENBLAS_PARAM_K"))) {
    k = atoi(p);
    has_param_k=1;
  } else {
    k = to;
  }

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

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

  for (i = 0; i < m * k * COMPSIZE; i++) {
    a[i] = ((IFLOAT) rand() / (IFLOAT) RAND_MAX) - 0.5;
  }
  for (i = 0; i < k * n * COMPSIZE; i++) {
    b[i] = ((IFLOAT) rand() / (IFLOAT) RAND_MAX) - 0.5;
  }
  for (i = 0; i < m * n * COMPSIZE; i++) {
    c[i] = ((FLOAT) rand() / (FLOAT) RAND_MAX) - 0.5;
  }

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

  for (i = from; i <= to; i += step) {
    
    timeg=0;

    if (!has_param_m) { m = i; }
    if (!has_param_n) { n = i; }
    if (!has_param_k) { k = i; }

    if (transa == 'N') { lda = m; }
    else { lda = k; }
    if (transb == 'N') { ldb = k; }
    else { ldb = n; }
    ldc = m;

    fprintf(stderr, " M=%4d, N=%4d, K=%4d : ", (int)m, (int)n, (int)k);
    begin();

    for (j=0; j<loops; j++) {
      GEMM (&transa, &transb, &m, &n, &k, alpha, a, &lda, b, &ldb, beta, c, &ldc);
    }

    end();
    time1 = getsec();

    timeg = time1/loops;
    fprintf(stderr,
	    " %10.2f MFlops %10.6f sec\n",
	    COMPSIZE * COMPSIZE * 2. * (double)k * (double)m * (double)n / timeg * 1.e-6, time1);
    
  }

  return 0;
}

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