static int dw_codelet_facto_v3(starpu_data_handle_t dataA, unsigned nblocks)
{
double start;
double end;
int ret;
/* create all the DAG nodes */
unsigned i,j,k;
if (bound)
starpu_bound_start(bounddeps, boundprio);
start = starpu_timing_now();
for (k = 0; k < nblocks; k++)
{
ret = create_task_11(dataA, k);
if (ret == -ENODEV) return ret;
for (i = k+1; i<nblocks; i++)
{
ret = create_task_12(dataA, k, i);
if (ret == -ENODEV) return ret;
ret = create_task_21(dataA, k, i);
if (ret == -ENODEV) return ret;
}
starpu_data_wont_use(starpu_data_get_sub_data(dataA, 2, k, k));
for (i = k+1; i<nblocks; i++)
for (j = k+1; j<nblocks; j++)
{
ret = create_task_22(dataA, k, i, j);
if (ret == -ENODEV) return ret;
}
for (i = k+1; i<nblocks; i++)
{
starpu_data_wont_use(starpu_data_get_sub_data(dataA, 2, k, i));
starpu_data_wont_use(starpu_data_get_sub_data(dataA, 2, i, k));
}
}
/* stall the application until the end of computations */
starpu_task_wait_for_all();
end = starpu_timing_now();
if (bound)
starpu_bound_stop();
double timing = end - start;
unsigned n = starpu_matrix_get_nx(dataA);
double flop = (2.0f*n*n*n)/3.0f;
PRINTF("# size\tms\tGFlops");
if (bound)
PRINTF("\tTms\tTGFlops");
PRINTF("\n");
PRINTF("%u\t%.0f\t%.1f", n, timing/1000, flop/timing/1000.0f);
if (bound)
{
double min;
starpu_bound_compute(&min, NULL, 0);
PRINTF("\t%.0f\t%.1f", min, flop/min/1000000.0f);
}
PRINTF("\n");
return 0;
}
static void _cholesky(starpu_data_handle_t dataA, unsigned nblocks)
{
double start;
double end;
struct starpu_task *entry_task = NULL;
/* create all the DAG nodes */
unsigned i,j,k;
start = starpu_timing_now();
for (k = 0; k < nblocks; k++)
{
struct starpu_task *task = create_task_11(dataA, k);
/* we defer the launch of the first task */
if (k == 0)
{
entry_task = task;
}
else
{
int ret = starpu_task_submit(task);
if (STARPU_UNLIKELY(ret == -ENODEV))
{
FPRINTF(stderr, "No worker may execute this task\n");
exit(0);
}
}
for (j = k+1; j<nblocks; j++)
{
create_task_21(dataA, k, j);
for (i = k+1; i<nblocks; i++)
{
if (i <= j)
create_task_22(dataA, k, i, j);
}
}
}
/* schedule the codelet */
int ret = starpu_task_submit(entry_task);
if (STARPU_UNLIKELY(ret == -ENODEV))
{
FPRINTF(stderr, "No worker may execute this task\n");
exit(0);
}
/* stall the application until the end of computations */
starpu_tag_wait(TAG11(nblocks-1));
starpu_data_unpartition(dataA, STARPU_MAIN_RAM);
end = starpu_timing_now();
double timing = end - start;
unsigned n = starpu_matrix_get_nx(dataA);
double flop = (1.0f*n*n*n)/3.0f;
PRINTF("# size\tms\tGFlops\n");
PRINTF("%u\t%.0f\t%.1f\n", n, timing/1000, (flop/timing/1000.0f));
}
static int cholesky_grain_rec(float *matA, unsigned size, unsigned ld, unsigned nblocks, unsigned nbigblocks, unsigned reclevel)
{
int ret;
/* create a new codelet */
struct starpu_task *entry_task = NULL;
/* create all the DAG nodes */
unsigned i,j,k;
starpu_data_handle_t dataA;
/* monitor and partition the A matrix into blocks :
* one block is now determined by 2 unsigned (i,j) */
starpu_matrix_data_register(&dataA, STARPU_MAIN_RAM, (uintptr_t)matA, ld, size, size, sizeof(float));
starpu_data_set_sequential_consistency_flag(dataA, 0);
struct starpu_data_filter f =
{
.filter_func = starpu_matrix_filter_vertical_block,
.nchildren = nblocks
};
struct starpu_data_filter f2 =
{
.filter_func = starpu_matrix_filter_block,
.nchildren = nblocks
};
starpu_data_map_filters(dataA, 2, &f, &f2);
for (k = 0; k < nbigblocks; k++)
{
struct starpu_task *task = create_task_11(dataA, k, reclevel);
/* we defer the launch of the first task */
if (k == 0)
{
entry_task = task;
}
else
{
ret = starpu_task_submit(task);
if (ret == -ENODEV) return 77;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
for (j = k+1; j<nblocks; j++)
{
ret = create_task_21(dataA, k, j, reclevel);
if (ret == -ENODEV) return 77;
for (i = k+1; i<nblocks; i++)
{
if (i <= j)
{
ret = create_task_22(dataA, k, i, j, reclevel);
if (ret == -ENODEV) return 77;
}
}
}
}
/* schedule the codelet */
ret = starpu_task_submit(entry_task);
if (STARPU_UNLIKELY(ret == -ENODEV))
{
FPRINTF(stderr, "No worker may execute this task\n");
return 77;
}
if (nblocks == nbigblocks)
{
/* stall the application until the end of computations */
starpu_tag_wait(TAG11_AUX(nblocks-1, reclevel));
starpu_data_unpartition(dataA, STARPU_MAIN_RAM);
starpu_data_unregister(dataA);
return 0;
}
else
{
STARPU_ASSERT(reclevel == 0);
unsigned ndeps_tags = (nblocks - nbigblocks)*(nblocks - nbigblocks);
starpu_tag_t *tag_array = malloc(ndeps_tags*sizeof(starpu_tag_t));
STARPU_ASSERT(tag_array);
unsigned ind = 0;
for (i = nbigblocks; i < nblocks; i++)
for (j = nbigblocks; j < nblocks; j++)
{
if (i <= j)
tag_array[ind++] = TAG22_AUX(nbigblocks - 1, i, j, reclevel);
}
starpu_tag_wait_array(ind, tag_array);
free(tag_array);
starpu_data_unpartition(dataA, STARPU_MAIN_RAM);
starpu_data_unregister(dataA);
float *newmatA = &matA[nbigblocks*(size/nblocks)*(ld+1)];
return cholesky_grain_rec(newmatA, size/nblocks*(nblocks - nbigblocks), ld, (nblocks - nbigblocks)*2, (nblocks - nbigblocks)*2, reclevel+1);
}
}
