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hpc-2022-g3/OpenMP/linear-algebra/kernels/gesummv/gesummv.c

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2022-11-11 12:23:45 +00:00
#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 "gesummv.h"
/* Array initialization. */
static void init_array(int n,
DATA_TYPE *alpha,
DATA_TYPE *beta,
DATA_TYPE POLYBENCH_2D(A, N, N, n, n),
DATA_TYPE POLYBENCH_2D(B, N, N, n, n),
DATA_TYPE POLYBENCH_1D(x, N, n))
{
int i, j;
*alpha = 43532;
*beta = 12313;
for (i = 0; i < n; i++)
{
x[i] = ((DATA_TYPE)i) / n;
for (j = 0; j < n; j++)
{
A[i][j] = ((DATA_TYPE)i * j) / n;
B[i][j] = ((DATA_TYPE)i * j) / n;
}
}
}
/* 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 n,
DATA_TYPE POLYBENCH_1D(y, N, n))
{
int i;
for (i = 0; i < n; i++)
{
fprintf(stderr, DATA_PRINTF_MODIFIER, y[i]);
if (i % 20 == 0)
fprintf(stderr, "\n");
}
}
/* Main computational kernel. The whole function will be timed,
including the call and return. */
static void kernel_gesummv(int n,
DATA_TYPE alpha,
DATA_TYPE beta,
DATA_TYPE POLYBENCH_2D(A, N, N, n, n),
DATA_TYPE POLYBENCH_2D(B, N, N, n, n),
DATA_TYPE POLYBENCH_1D(tmp, N, n),
DATA_TYPE POLYBENCH_1D(x, N, n),
DATA_TYPE POLYBENCH_1D(y, N, n))
{
int i, j;
for (i = 0; i < _PB_N; i++)
{
tmp[i] = 0;
y[i] = 0;
for (j = 0; j < _PB_N; j++)
{
tmp[i] = A[i][j] * x[j] + tmp[i];
y[i] = B[i][j] * x[j] + y[i];
}
y[i] = alpha * tmp[i] + beta * y[i];
}
}
int main(int argc, char **argv)
{
/* Retrieve problem size. */
int n = N;
/* Variable declaration/allocation. */
DATA_TYPE alpha;
DATA_TYPE beta;
POLYBENCH_2D_ARRAY_DECL(A, DATA_TYPE, N, N, n, n);
POLYBENCH_2D_ARRAY_DECL(B, DATA_TYPE, N, N, n, n);
POLYBENCH_1D_ARRAY_DECL(tmp, DATA_TYPE, N, n);
POLYBENCH_1D_ARRAY_DECL(x, DATA_TYPE, N, n);
POLYBENCH_1D_ARRAY_DECL(y, DATA_TYPE, N, n);
/* Initialize array(s). */
init_array(n, &alpha, &beta,
POLYBENCH_ARRAY(A),
POLYBENCH_ARRAY(B),
POLYBENCH_ARRAY(x));
/* Start timer. */
polybench_start_instruments;
/* Run kernel. */
kernel_gesummv(n, alpha, beta,
POLYBENCH_ARRAY(A),
POLYBENCH_ARRAY(B),
POLYBENCH_ARRAY(tmp),
POLYBENCH_ARRAY(x),
POLYBENCH_ARRAY(y));
/* 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(n, POLYBENCH_ARRAY(y)));
/* Be clean. */
POLYBENCH_FREE_ARRAY(A);
POLYBENCH_FREE_ARRAY(B);
POLYBENCH_FREE_ARRAY(tmp);
POLYBENCH_FREE_ARRAY(x);
POLYBENCH_FREE_ARRAY(y);
return 0;
}