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https://github.com/Steffo99/unimore-hpc-assignments.git
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130 lines
4.4 KiB
C
130 lines
4.4 KiB
C
#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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/* Include polybench common header. */
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#include <polybench.h>
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/* Include benchmark-specific header. */
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/* Default data type is int, default size is 50. */
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#include "reg_detect.h"
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/* Array initialization. */
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static void init_array(int maxgrid,
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DATA_TYPE POLYBENCH_2D(sum_tang, MAXGRID, MAXGRID, maxgrid, maxgrid),
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DATA_TYPE POLYBENCH_2D(mean, MAXGRID, MAXGRID, maxgrid, maxgrid),
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DATA_TYPE POLYBENCH_2D(path, MAXGRID, MAXGRID, maxgrid, maxgrid))
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{
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int i, j;
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for (i = 0; i < maxgrid; i++)
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for (j = 0; j < maxgrid; j++)
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{
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sum_tang[i][j] = (DATA_TYPE)((i + 1) * (j + 1));
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mean[i][j] = ((DATA_TYPE)i - j) / maxgrid;
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path[i][j] = ((DATA_TYPE)i * (j - 1)) / maxgrid;
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}
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}
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/* DCE code. Must scan the entire live-out data.
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Can be used also to check the correctness of the output. */
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static void print_array(int maxgrid,
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DATA_TYPE POLYBENCH_2D(path, MAXGRID, MAXGRID, maxgrid, maxgrid))
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{
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int i, j;
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for (i = 0; i < maxgrid; i++)
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for (j = 0; j < maxgrid; j++)
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{
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fprintf(stderr, DATA_PRINTF_MODIFIER, path[i][j]);
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if ((i * maxgrid + j) % 20 == 0)
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fprintf(stderr, "\n");
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}
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fprintf(stderr, "\n");
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}
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/* Main computational kernel. The whole function will be timed,
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including the call and return. */
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/* Source (modified): http://www.cs.uic.edu/~iluican/reg_detect.c */
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static void kernel_reg_detect(int niter, int maxgrid, int length,
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DATA_TYPE POLYBENCH_2D(sum_tang, MAXGRID, MAXGRID, maxgrid, maxgrid),
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DATA_TYPE POLYBENCH_2D(mean, MAXGRID, MAXGRID, maxgrid, maxgrid),
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DATA_TYPE POLYBENCH_2D(path, MAXGRID, MAXGRID, maxgrid, maxgrid),
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DATA_TYPE POLYBENCH_3D(diff, MAXGRID, MAXGRID, LENGTH, maxgrid, maxgrid, length),
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DATA_TYPE POLYBENCH_3D(sum_diff, MAXGRID, MAXGRID, LENGTH, maxgrid, maxgrid, length))
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{
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int t, i, j, cnt;
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for (t = 0; t < _PB_NITER; t++)
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{
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for (j = 0; j <= _PB_MAXGRID - 1; j++)
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for (i = j; i <= _PB_MAXGRID - 1; i++)
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for (cnt = 0; cnt <= _PB_LENGTH - 1; cnt++)
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diff[j][i][cnt] = sum_tang[j][i];
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for (j = 0; j <= _PB_MAXGRID - 1; j++)
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{
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for (i = j; i <= _PB_MAXGRID - 1; i++)
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{
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sum_diff[j][i][0] = diff[j][i][0];
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for (cnt = 1; cnt <= _PB_LENGTH - 1; cnt++)
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sum_diff[j][i][cnt] = sum_diff[j][i][cnt - 1] + diff[j][i][cnt];
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mean[j][i] = sum_diff[j][i][_PB_LENGTH - 1];
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}
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}
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for (i = 0; i <= _PB_MAXGRID - 1; i++)
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path[0][i] = mean[0][i];
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for (j = 1; j <= _PB_MAXGRID - 1; j++)
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for (i = j; i <= _PB_MAXGRID - 1; i++)
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path[j][i] = path[j - 1][i - 1] + mean[j][i];
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}
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}
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int main(int argc, char **argv)
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{
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/* Retrieve problem size. */
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int niter = NITER;
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int maxgrid = MAXGRID;
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int length = LENGTH;
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/* Variable declaration/allocation. */
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POLYBENCH_2D_ARRAY_DECL(sum_tang, DATA_TYPE, MAXGRID, MAXGRID, maxgrid, maxgrid);
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POLYBENCH_2D_ARRAY_DECL(mean, DATA_TYPE, MAXGRID, MAXGRID, maxgrid, maxgrid);
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POLYBENCH_2D_ARRAY_DECL(path, DATA_TYPE, MAXGRID, MAXGRID, maxgrid, maxgrid);
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POLYBENCH_3D_ARRAY_DECL(diff, DATA_TYPE, MAXGRID, MAXGRID, LENGTH, maxgrid, maxgrid, length);
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POLYBENCH_3D_ARRAY_DECL(sum_diff, DATA_TYPE, MAXGRID, MAXGRID, LENGTH, maxgrid, maxgrid, length);
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/* Initialize array(s). */
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init_array(maxgrid,
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POLYBENCH_ARRAY(sum_tang),
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POLYBENCH_ARRAY(mean),
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POLYBENCH_ARRAY(path));
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/* Start timer. */
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polybench_start_instruments;
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/* Run kernel. */
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kernel_reg_detect(niter, maxgrid, length,
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POLYBENCH_ARRAY(sum_tang),
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POLYBENCH_ARRAY(mean),
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POLYBENCH_ARRAY(path),
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POLYBENCH_ARRAY(diff),
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POLYBENCH_ARRAY(sum_diff));
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/* Stop and print timer. */
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polybench_stop_instruments;
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polybench_print_instruments;
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/* Prevent dead-code elimination. All live-out data must be printed
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by the function call in argument. */
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polybench_prevent_dce(print_array(maxgrid, POLYBENCH_ARRAY(path)));
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/* Be clean. */
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POLYBENCH_FREE_ARRAY(sum_tang);
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POLYBENCH_FREE_ARRAY(mean);
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POLYBENCH_FREE_ARRAY(path);
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POLYBENCH_FREE_ARRAY(diff);
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POLYBENCH_FREE_ARRAY(sum_diff);
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return 0;
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}
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