mirror of
https://github.com/Steffo99/unimore-hpc-assignments.git
synced 2024-11-30 03:54:20 +00:00
107 lines
3 KiB
C
107 lines
3 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 int, default size is 50. */
|
||
|
|
#include "dynprog.h"
|
||
|
|
|
||
|
|
/* Array initialization. */
|
||
|
|
static void init_array(int length,
|
||
|
|
DATA_TYPE POLYBENCH_2D(c, LENGTH, LENGTH, length, length),
|
||
|
|
DATA_TYPE POLYBENCH_2D(W, LENGTH, LENGTH, length, length))
|
||
|
|
{
|
||
|
|
int i, j;
|
||
|
|
for (i = 0; i < length; i++)
|
||
|
|
for (j = 0; j < length; j++)
|
||
|
|
{
|
||
|
|
c[i][j] = i * j % 2;
|
||
|
|
W[i][j] = ((DATA_TYPE)i - j) / length;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* DCE code. Must scan the entire live-out data.
|
||
|
|
Can be used also to check the correctness of the output. */
|
||
|
|
static void print_array(DATA_TYPE out)
|
||
|
|
{
|
||
|
|
fprintf(stderr, DATA_PRINTF_MODIFIER, out);
|
||
|
|
fprintf(stderr, "\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Main computational kernel. The whole function will be timed,
|
||
|
|
including the call and return. */
|
||
|
|
static void kernel_dynprog(int tsteps, int length,
|
||
|
|
DATA_TYPE POLYBENCH_2D(c, LENGTH, LENGTH, length, length),
|
||
|
|
DATA_TYPE POLYBENCH_2D(W, LENGTH, LENGTH, length, length),
|
||
|
|
DATA_TYPE POLYBENCH_3D(sum_c, LENGTH, LENGTH, LENGTH, length, length, length),
|
||
|
|
DATA_TYPE *out)
|
||
|
|
{
|
||
|
|
int iter, i, j, k;
|
||
|
|
|
||
|
|
DATA_TYPE out_l = 0;
|
||
|
|
|
||
|
|
for (iter = 0; iter < _PB_TSTEPS; iter++)
|
||
|
|
{
|
||
|
|
for (i = 0; i <= _PB_LENGTH - 1; i++)
|
||
|
|
for (j = 0; j <= _PB_LENGTH - 1; j++)
|
||
|
|
c[i][j] = 0;
|
||
|
|
for (i = 0; i <= _PB_LENGTH - 2; i++)
|
||
|
|
{
|
||
|
|
for (j = i + 1; j <= _PB_LENGTH - 1; j++)
|
||
|
|
{
|
||
|
|
sum_c[i][j][i] = 0;
|
||
|
|
for (k = i + 1; k <= j - 1; k++)
|
||
|
|
sum_c[i][j][k] = sum_c[i][j][k - 1] + c[i][k] + c[k][j];
|
||
|
|
c[i][j] = sum_c[i][j][j - 1] + W[i][j];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
out_l += c[0][_PB_LENGTH - 1];
|
||
|
|
}
|
||
|
|
*out = out_l;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char **argv)
|
||
|
|
{
|
||
|
|
/* Retrieve problem size. */
|
||
|
|
int length = LENGTH;
|
||
|
|
int tsteps = TSTEPS;
|
||
|
|
|
||
|
|
/* Variable declaration/allocation. */
|
||
|
|
DATA_TYPE out;
|
||
|
|
POLYBENCH_3D_ARRAY_DECL(sum_c, DATA_TYPE, LENGTH, LENGTH, LENGTH, length, length, length);
|
||
|
|
POLYBENCH_2D_ARRAY_DECL(c, DATA_TYPE, LENGTH, LENGTH, length, length);
|
||
|
|
POLYBENCH_2D_ARRAY_DECL(W, DATA_TYPE, LENGTH, LENGTH, length, length);
|
||
|
|
|
||
|
|
/* Initialize array(s). */
|
||
|
|
init_array(length, POLYBENCH_ARRAY(c), POLYBENCH_ARRAY(W));
|
||
|
|
|
||
|
|
/* Start timer. */
|
||
|
|
polybench_start_instruments;
|
||
|
|
|
||
|
|
/* Run kernel. */
|
||
|
|
kernel_dynprog(tsteps, length,
|
||
|
|
POLYBENCH_ARRAY(c),
|
||
|
|
POLYBENCH_ARRAY(W),
|
||
|
|
POLYBENCH_ARRAY(sum_c),
|
||
|
|
&out);
|
||
|
|
|
||
|
|
/* 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(out));
|
||
|
|
|
||
|
|
/* Be clean. */
|
||
|
|
POLYBENCH_FREE_ARRAY(sum_c);
|
||
|
|
POLYBENCH_FREE_ARRAY(c);
|
||
|
|
POLYBENCH_FREE_ARRAY(W);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|