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/* StarPU --- Runtime system for heterogeneous multicore architectures.
*
* Copyright (C) 2023-2025 University of Bordeaux, CNRS (LaBRI UMR 5800), Inria
*
* StarPU is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at
* your option) any later version.
*
* StarPU is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See the GNU Lesser General Public License in COPYING.LGPL for more details.
*/
#include <starpu.h>
#define NX 2
#define NY 3
#define NZ 2
#define NT 2
void arr4d_cpu_func(void *buffers[], void *args)
{
(void)args;
int *arr4d = (int *) STARPU_NDIM_GET_PTR(buffers[0]);
int *nn = (int *)STARPU_NDIM_GET_NN(buffers[0]);
unsigned *ldn = STARPU_NDIM_GET_LDN(buffers[0]);
int nx = nn[0];
int ny = nn[1];
int nz = nn[2];
int nt = nn[3];
unsigned ldy = ldn[1];
unsigned ldz = ldn[2];
unsigned ldt = ldn[3];
int i, j, k, l;
for (l = 0; l < nt; l++)
{
for (k = 0; k < nz; k++)
{
for (j = 0; j < ny; j++)
{
for (i = 0; i < nx; i++)
{
arr4d[(l*ldt)+(k*ldz)+(j*ldy)+i] *= 10;
}
}
}
}
}
struct starpu_codelet arr4d_cl =
{
.cpu_funcs = {arr4d_cpu_func},
.cpu_funcs_name = {"arr4d_cpu_func"},
.nbuffers = 1,
.modes = { STARPU_RW },
.name = "arr4d_cl"
};
int main(void)
{
int ret;
int arr4d[NX*NY*NZ*NT];
int val = 0;
int i, j, k, l;
starpu_data_handle_t arr4d_handle;
unsigned nn[4] = {NX, NY, NZ, NT};
unsigned ldn[4] = {1, NX, NX*NY, NX*NY*NZ};
ret = starpu_init(NULL);
if (ret == -ENODEV)
return 77;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
for (l = 0; l < NT; l++)
for (k = 0; k < NZ; k++)
for (j = 0; j < NY; j++)
for (i = 0; i < NX; i++)
arr4d[(l*NX*NY*NZ)+(k*NX*NY)+(j*NX)+i] = val++;
starpu_ndim_data_register(&arr4d_handle, STARPU_MAIN_RAM, (uintptr_t)arr4d, ldn, nn, 4, sizeof(arr4d[0]));
ret = starpu_task_insert(&arr4d_cl,
STARPU_RW, arr4d_handle,
0);
if (ret == -ENODEV)
goto enodev;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_insert");
starpu_data_unregister(arr4d_handle);
for (l = 0; l < NT; l++)
{
fprintf(stderr, "------\n");
for (k = 0; k < NZ; k++)
{
for (j = 0; j < NY; j++)
{
fprintf(stderr, "|\t");
for (i = 0; i < NX; i++)
fprintf(stderr, "%d\t", arr4d[(l*NX*NY*NZ)+(k*NX*NY)+(j*NX)+i]);
fprintf(stderr, " |");
}
fprintf(stderr, "\n");
}
fprintf(stderr, "------\n");
}
starpu_shutdown();
return 0;
enodev:
starpu_data_unregister(arr4d_handle);
starpu_shutdown();
return 77;
}
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