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/**
* This version is stamped on May 10, 2016
*
* Contact:
* Louis-Noel Pouchet <pouchet.ohio-state.edu>
* Tomofumi Yuki <tomofumi.yuki.fr>
*
* Web address: http://polybench.sourceforge.net
*/
/* gemm.c: this file is part of PolyBench/C */
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <math.h>
/* Include polybench common header. */
#include <polybench.h>
/* Include benchmark-specific header. */
#include "gemm.h"
/* Array initialization. */
static
void init_array(int ni, int nj, int nk,
DATA_TYPE *alpha,
DATA_TYPE *beta,
DATA_TYPE POLYBENCH_2D(C,NI,NJ,ni,nj),
DATA_TYPE POLYBENCH_2D(A,NI,NK,ni,nk),
DATA_TYPE POLYBENCH_2D(B,NK,NJ,nk,nj))
{
int i, j;
*alpha = 1.5;
*beta = 1.2;
for (i = 0; i < ni; i++)
for (j = 0; j < nj; j++)
C[i][j] = (DATA_TYPE) ((i*j+1) % ni) / ni;
for (i = 0; i < ni; i++)
for (j = 0; j < nk; j++)
A[i][j] = (DATA_TYPE) (i*(j+1) % nk) / nk;
for (i = 0; i < nk; i++)
for (j = 0; j < nj; j++)
B[i][j] = (DATA_TYPE) (i*(j+2) % nj) / nj;
}
/* DCE code. Must scan the entire live-out data.
Can be used also to check the correctness of the output. */
static
void print_array(int ni, int nj,
DATA_TYPE POLYBENCH_2D(C,NI,NJ,ni,nj))
{
int i, j;
POLYBENCH_DUMP_START;
POLYBENCH_DUMP_BEGIN("C");
for (i = 0; i < ni; i++)
for (j = 0; j < nj; j++) {
if ((i * ni + j) % 20 == 0) fprintf (POLYBENCH_DUMP_TARGET, "\n");
fprintf (POLYBENCH_DUMP_TARGET, DATA_PRINTF_MODIFIER, C[i][j]);
}
POLYBENCH_DUMP_END("C");
POLYBENCH_DUMP_FINISH;
}
/* Main computational kernel. The whole function will be timed,
including the call and return. */
static
void kernel_gemm(int ni, int nj, int nk,
DATA_TYPE alpha,
DATA_TYPE beta,
DATA_TYPE POLYBENCH_2D(C,NI,NJ,ni,nj),
DATA_TYPE POLYBENCH_2D(A,NI,NK,ni,nk),
DATA_TYPE POLYBENCH_2D(B,NK,NJ,nk,nj))
{
int i, j, k;
//BLAS PARAMS
//TRANSA = 'N'
//TRANSB = 'N'
// => Form C := alpha*A*B + beta*C,
//A is NIxNK
//B is NKxNJ
//C is NIxNJ
#pragma scop
#pragma omp parallel for private(j)
for (i = 0; i < _PB_NI; i++)
for (j = 0; j < _PB_NJ; j++)
C[i][j] *= beta;
#pragma omp parallel for private(k,j)
for (i = 0; i < _PB_NI; i++)
for (k = 0; k < _PB_NK; k++)
for (j = 0; j < _PB_NJ; j++)
C[i][j] += alpha * A[i][k] * B[k][j];
#pragma endscop
}
int main(int argc, char** argv)
{
/* Retrieve problem size. */
int ni = NI;
int nj = NJ;
int nk = NK;
/* Variable declaration/allocation. */
DATA_TYPE alpha;
DATA_TYPE beta;
POLYBENCH_2D_ARRAY_DECL(C,DATA_TYPE,NI,NJ,ni,nj);
POLYBENCH_2D_ARRAY_DECL(A,DATA_TYPE,NI,NK,ni,nk);
POLYBENCH_2D_ARRAY_DECL(B,DATA_TYPE,NK,NJ,nk,nj);
/* Initialize array(s). */
init_array (ni, nj, nk, &alpha, &beta,
POLYBENCH_ARRAY(C),
POLYBENCH_ARRAY(A),
POLYBENCH_ARRAY(B));
/* Start timer. */
polybench_start_instruments;
/* Run kernel. */
kernel_gemm (ni, nj, nk,
alpha, beta,
POLYBENCH_ARRAY(C),
POLYBENCH_ARRAY(A),
POLYBENCH_ARRAY(B));
/* Stop and print timer. */
polybench_stop_instruments;
polybench_print_instruments;
/* Prevent dead-code elimination. All live-out data must be printed
by the function call in argument. */
polybench_prevent_dce(print_array(ni, nj, POLYBENCH_ARRAY(C)));
/* Be clean. */
POLYBENCH_FREE_ARRAY(C);
POLYBENCH_FREE_ARRAY(A);
POLYBENCH_FREE_ARRAY(B);
return 0;
}