mirror of
https://github.com/Steffo99/unimore-hpc-assignments.git
synced 2024-11-23 16:44:22 +00:00
94 lines
2.4 KiB
C
94 lines
2.4 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 4096x4096. */
|
|
#include "convolution-2d.h"
|
|
|
|
/* Array initialization. */
|
|
static void init_array(int ni, int nj,
|
|
DATA_TYPE POLYBENCH_2D(A, NI, NJ, ni, nj))
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0; i < ni; i++)
|
|
for (j = 0; j < nj; j++)
|
|
{
|
|
A[i][j] = ((DATA_TYPE)(i + j) / 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(B, NI, NJ, ni, nj))
|
|
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0; i < ni; i++)
|
|
for (j = 0; j < nj; j++)
|
|
{
|
|
fprintf(stderr, DATA_PRINTF_MODIFIER, B[i][j]);
|
|
if ((i * NJ + 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_conv2d(int ni,
|
|
int nj,
|
|
DATA_TYPE POLYBENCH_2D(A, NI, NJ, ni, nj),
|
|
DATA_TYPE POLYBENCH_2D(B, NI, NJ, ni, nj))
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 1; i < _PB_NI - 1; ++i)
|
|
{
|
|
for (j = 1; j < _PB_NJ - 1; ++j)
|
|
{
|
|
B[i][j] = 0.2 * A[i - 1][j - 1] + 0.5 * A[i - 1][j] + -0.8 * A[i - 1][j + 1] + -0.3 * A[i][j - 1] + 0.6 * A[i][j] + -0.9 * A[i][j + 1] + 0.4 * A[i + 1][j - 1] + 0.7 * A[i + 1][j] + 0.1 * A[i + 1][j + 1];
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
/* Retrieve problem size. */
|
|
int ni = NI;
|
|
int nj = NJ;
|
|
|
|
/* Variable declaration/allocation. */
|
|
POLYBENCH_2D_ARRAY_DECL(A, DATA_TYPE, NI, NJ, ni, nj);
|
|
POLYBENCH_2D_ARRAY_DECL(B, DATA_TYPE, NI, NJ, ni, nj);
|
|
|
|
/* Initialize array(s). */
|
|
init_array(ni, nj, POLYBENCH_ARRAY(A));
|
|
|
|
/* Start timer. */
|
|
polybench_start_instruments;
|
|
|
|
/* Run kernel. */
|
|
kernel_conv2d(ni, nj, 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(B)));
|
|
|
|
/* Be clean. */
|
|
POLYBENCH_FREE_ARRAY(A);
|
|
POLYBENCH_FREE_ARRAY(B);
|
|
|
|
return 0;
|
|
}
|