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#ifdef UTEST
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <math.h> /* fabs */
#include "blis_utest.h"
#include "bli_gemm_power7_opt_8x4.h"
#define COLMAJ_INDEX(row,col,ld) ((col*ld)+row)
#define ROWMAJ_INDEX(row,col,ld) ((row*ld)+col)
#define BLIS_INDEX(row,col,rs,cs) ((row*rs)+(col*cs))
#define MR BLIS_DEFAULT_MR_D
#define NR BLIS_DEFAULT_NR_D
#define LDA MR
#define LDB NR
#define EPSILON 0.0000001
/*
* Perform
* c = beta * c + alpha * a * b
* where
* alpha & beta are scalars
* c is mr x nr in blis-format, (col-stride & row-stride)
* a is mr x k in packed col-maj format (leading dim is mr)
* b is k x nr in packed row-maj format (leading dim is nr)
*/
void bli_dgemm_check(
dim_t k,
double* restrict alpha,
double* restrict a,
double* restrict b,
double* restrict beta,
double* restrict c, inc_t rs_c, inc_t cs_c,
auxinfo_t* data
)
{
int i, j, kk;
double c00;
for (i=0; i < MR; i++) {
for (j=0; j < NR; j++) {
c00 = c[BLIS_INDEX(i,j,rs_c,cs_c)] * *beta;
for (kk=0; kk < k; kk++)
c00 += *alpha * (a[COLMAJ_INDEX(i,kk,LDA)] * b[ROWMAJ_INDEX(kk,j,LDB)]);
c[BLIS_INDEX(i,j,rs_c,cs_c)] = c00;
}
}
}
int main(int argc, char *argv[])
{
double *A, *B, *C, *C2;
double alpha = 1.0, beta = 1.0;
long i, j;
long k = 128;
int iters = 10;
int errors;
struct timeval tv_start, tv_end;
switch (argc) {
case 2:
k = atoi(argv[1]);
case 1:
break;
default:
printf("Usage: %s [k]\n", argv[0]);
return 1;
break;
}
//long rs_c = 1, cs_c = MR; // Column major
long rs_c = NR, cs_c = 1; // Row major
A = (double*)malloc(LDA * k * sizeof(double));
B = (double*)malloc(LDB * k * sizeof(double));
C = (double*)malloc(MR * NR * sizeof(double));
C2 = (double*)malloc(MR * NR * sizeof(double));
/* Initialize C matrix in blis format */
for (j=0; j<NR; j++)
for (i=0; i<MR; i++)
C2[BLIS_INDEX(i,j,rs_c,cs_c)] = C[BLIS_INDEX(i,j,rs_c,cs_c)] = drand48();
/* Initialize A matrix in column major format */
for (j=0; j<k; j++)
for (i=0; i<MR; i++)
A[COLMAJ_INDEX(i,j,LDA)] = drand48();
/* Initialize B matrix in row major format */
for (j=0; j<NR; j++)
for (i=0; i<k; i++)
B[ROWMAJ_INDEX(i,j,LDB)] = drand48();
/* First check the results */
bli_dgemm_opt_8x4(k, &alpha, A, B, &beta, C, rs_c, cs_c, NULL);
bli_dgemm_check(k, &alpha, A, B, &beta, C2, rs_c, cs_c, NULL);
for (i=0, errors=0; i<MR*NR-1; i++) {
if (fabs(C[i] - C2[i]) > EPSILON) {
if (errors<20) printf(" %ld expected=%f got=%f\n", i, C2[i], C[i]);
errors++;
}
}
printf("Errors = %d\n", errors);
if (errors) {
return -1;
}
/* Now get the performance */
gettimeofday(&tv_start, NULL);
for (i=0; i<iters; i++) {
bli_dgemm_opt_8x4(k, &alpha, A, B, &beta, C, rs_c, cs_c, NULL);
}
gettimeofday(&tv_end, NULL);
float secs = (tv_end.tv_sec - tv_start.tv_sec) + (double)(tv_end.tv_usec - tv_start.tv_usec)/1E6;
{
float gflops = ((2.0*MR*NR*k*iters)/1E9)/secs;
printf("%d %d %ld : GFLOPS = %6.3f\n", MR, NR, k, gflops);
}
return 0;
}
#endif
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