mirror of
https://github.com/Steffo99/unimore-hpc-assignments.git
synced 2024-11-27 10:34:22 +00:00
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
|
#include <stdio.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <math.h>
|
||
|
|
|
||
|
|
/* Include polybench common header. */
|
||
|
|
#include <polybench.h>
|
||
|
|
|
||
|
|
/* Include benchmark-specific header. */
|
||
|
|
/* Default data type is double, default size is 4000. */
|
||
|
|
#include "syrk.h"
|
||
|
|
|
||
|
|
/* Array initialization. */
|
||
|
|
static void init_array(int ni, int nj,
|
||
|
|
DATA_TYPE *alpha,
|
||
|
|
DATA_TYPE *beta,
|
||
|
|
DATA_TYPE POLYBENCH_2D(C, NI, NI, ni, ni),
|
||
|
|
DATA_TYPE POLYBENCH_2D(A, NI, NJ, ni, nj))
|
||
|
|
{
|
||
|
|
int i, j;
|
||
|
|
|
||
|
|
*alpha = 32412;
|
||
|
|
*beta = 2123;
|
||
|
|
for (i = 0; i < ni; i++)
|
||
|
|
for (j = 0; j < nj; j++)
|
||
|
|
A[i][j] = ((DATA_TYPE)i * j) / ni;
|
||
|
|
for (i = 0; i < ni; i++)
|
||
|
|
for (j = 0; j < ni; j++)
|
||
|
|
C[i][j] = ((DATA_TYPE)i * j) / ni;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 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,
|
||
|
|
DATA_TYPE POLYBENCH_2D(C, NI, NI, ni, ni))
|
||
|
|
{
|
||
|
|
int i, j;
|
||
|
|
|
||
|
|
for (i = 0; i < ni; i++)
|
||
|
|
for (j = 0; j < ni; j++)
|
||
|
|
{
|
||
|
|
fprintf(stderr, DATA_PRINTF_MODIFIER, C[i][j]);
|
||
|
|
if ((i * ni + j) % 20 == 0)
|
||
|
|
fprintf(stderr, "\n");
|
||
|
|
}
|
||
|
|
fprintf(stderr, "\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Main computational kernel. The whole function will be timed,
|
||
|
|
including the call and return. */
|
||
|
|
static void kernel_syrk(int ni, int nj,
|
||
|
|
DATA_TYPE alpha,
|
||
|
|
DATA_TYPE beta,
|
||
|
|
DATA_TYPE POLYBENCH_2D(C, NI, NI, ni, ni),
|
||
|
|
DATA_TYPE POLYBENCH_2D(A, NI, NJ, ni, nj))
|
||
|
|
{
|
||
|
|
int i, j, k;
|
||
|
|
|
||
|
|
/* C := alpha*A*A' + beta*C */
|
||
|
|
for (i = 0; i < _PB_NI; i++)
|
||
|
|
for (j = 0; j < _PB_NI; j++)
|
||
|
|
C[i][j] *= beta;
|
||
|
|
for (i = 0; i < _PB_NI; i++)
|
||
|
|
for (j = 0; j < _PB_NI; j++)
|
||
|
|
for (k = 0; k < _PB_NJ; k++)
|
||
|
|
C[i][j] += alpha * A[i][k] * A[j][k];
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char **argv)
|
||
|
|
{
|
||
|
|
/* Retrieve problem size. */
|
||
|
|
int ni = NI;
|
||
|
|
int nj = NJ;
|
||
|
|
|
||
|
|
/* Variable declaration/allocation. */
|
||
|
|
DATA_TYPE alpha;
|
||
|
|
DATA_TYPE beta;
|
||
|
|
POLYBENCH_2D_ARRAY_DECL(C, DATA_TYPE, NI, NI, ni, ni);
|
||
|
|
POLYBENCH_2D_ARRAY_DECL(A, DATA_TYPE, NI, NJ, ni, nj);
|
||
|
|
|
||
|
|
/* Initialize array(s). */
|
||
|
|
init_array(ni, nj, &alpha, &beta, POLYBENCH_ARRAY(C), POLYBENCH_ARRAY(A));
|
||
|
|
|
||
|
|
/* Start timer. */
|
||
|
|
polybench_start_instruments;
|
||
|
|
|
||
|
|
/* Run kernel. */
|
||
|
|
kernel_syrk(ni, nj, alpha, beta, POLYBENCH_ARRAY(C), POLYBENCH_ARRAY(A));
|
||
|
|
|
||
|
|
/* 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, POLYBENCH_ARRAY(C)));
|
||
|
|
|
||
|
|
/* Be clean. */
|
||
|
|
POLYBENCH_FREE_ARRAY(C);
|
||
|
|
POLYBENCH_FREE_ARRAY(A);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|