static int create_task_21(starpu_data_handle_t dataA, unsigned k, unsigned j, unsigned reclevel)
{
int ret;
struct starpu_task *task = create_task(TAG21_AUX(k, j, reclevel));
task->cl = &cl21;
/* which sub-data is manipulated ? */
task->handles[0] = starpu_data_get_sub_data(dataA, 2, k, k);
task->handles[1] = starpu_data_get_sub_data(dataA, 2, k, j);
if (j == k+1)
{
task->priority = STARPU_MAX_PRIO;
}
/* enforce dependencies ... */
if (k > 0)
{
starpu_tag_declare_deps(TAG21_AUX(k, j, reclevel), 2, TAG11_AUX(k, reclevel), TAG22_AUX(k-1, k, j, reclevel));
}
else
{
starpu_tag_declare_deps(TAG21_AUX(k, j, reclevel), 1, TAG11_AUX(k, reclevel));
}
int n = starpu_matrix_get_nx(task->handles[0]);
task->flops = FLOPS_STRSM(n, n);
ret = starpu_task_submit(task);
if (ret != -ENODEV) STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
return ret;
}
static void create_task_21(starpu_data_handle_t dataA, unsigned k, unsigned j)
{
int ret;
struct starpu_task *task = create_task(TAG21(k, j));
task->cl = &cl21;
/* which sub-data is manipulated ? */
task->handles[0] = starpu_data_get_sub_data(dataA, 2, k, k);
task->handles[1] = starpu_data_get_sub_data(dataA, 2, k, j);
if (!no_prio && (j == k+1))
{
task->priority = STARPU_MAX_PRIO;
}
/* enforce dependencies ... */
if (k > 0)
{
starpu_tag_declare_deps(TAG21(k, j), 2, TAG11(k), TAG22(k-1, k, j));
}
else
{
starpu_tag_declare_deps(TAG21(k, j), 1, TAG11(k));
}
ret = starpu_task_submit(task);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
static void create_task_12(starpu_data_handle_t dataA, unsigned k, unsigned i)
{
int ret;
/* printf("task 12 k,i = %d,%d TAG = %llx\n", k,i, TAG12(k,i)); */
struct starpu_task *task = create_task(TAG12(k, i));
task->cl = &cl12;
/* which sub-data is manipulated ? */
task->handles[0] = starpu_data_get_sub_data(dataA, 2, k, k);
task->handles[1] = starpu_data_get_sub_data(dataA, 2, i, k);
if (!no_prio && (i == k+1))
{
task->priority = STARPU_MAX_PRIO;
}
/* enforce dependencies ... */
if (k > 0)
{
starpu_tag_declare_deps(TAG12(k, i), 2, TAG11(k), TAG22(k-1, i, k));
}
else
{
starpu_tag_declare_deps(TAG12(k, i), 1, TAG11(k));
}
ret = starpu_task_submit(task);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
int main(int argc, char **argv)
{
int ret;
starpu_init(NULL);
starpu_data_malloc_pinned_if_possible((void **)&buffer, VECTORSIZE);
starpu_vector_data_register(&v_handle, 0, (uintptr_t)buffer, VECTORSIZE, sizeof(char));
struct starpu_data_filter f = {
.filter_func = starpu_vector_divide_in_2_filter_func,
/* there are only 2 children */
.nchildren = 2,
/* the length of the first part */
.filter_arg = VECTORSIZE/2,
.get_nchildren = NULL,
.get_child_ops = NULL
};
unsigned iter;
for (iter = 0; iter < NITER; iter++)
{
starpu_data_map_filters(v_handle, 1, &f);
ret = use_handle(starpu_data_get_sub_data(v_handle, 1, 0));
if (ret == -ENODEV)
goto enodev;
ret = use_handle(starpu_data_get_sub_data(v_handle, 1, 1));
if (ret == -ENODEV)
goto enodev;
starpu_task_wait_for_all();
starpu_data_unpartition(v_handle, 0);
ret = use_handle(v_handle);
if (ret == -ENODEV)
goto enodev;
starpu_task_wait_for_all();
}
starpu_data_unregister(v_handle);
starpu_shutdown();
return 0;
enodev:
fprintf(stderr, "WARNING: No one can execute this task\n");
/* yes, we do not perform the computation but we did detect that no one
* could perform the kernel, so this is not an error from StarPU */
return 0;
}
static void launch_codelets(void)
{
#ifdef STARPU_USE_FXT
_starpu_fxt_register_thread(0);
#endif
/* partition the work into slices */
unsigned taskx, tasky;
srand(time(NULL));
/* should we use a single performance model for all archs and use an
* acceleration factor ? */
if (use_common_model) {
cl.model = &sgemm_model_common;
}
else {
cl.model = &sgemm_model;
}
for (taskx = 0; taskx < nslicesx; taskx++)
{
for (tasky = 0; tasky < nslicesy; tasky++)
{
/* A B[task] = C[task] */
struct starpu_task *task = starpu_task_create();
task->cl = &cl;
task->cl_arg = &conf;
task->cl_arg_size = sizeof(struct block_conf);
task->callback_func = callback_func;
task->callback_arg = NULL;
starpu_tag_t tag = TAG(taskx, tasky);
task->use_tag = 1;
task->tag_id = tag;
task->buffers[0].handle = starpu_data_get_sub_data(A_handle, 1, tasky);
task->buffers[0].mode = STARPU_R;
task->buffers[1].handle = starpu_data_get_sub_data(B_handle, 1, taskx);
task->buffers[1].mode = STARPU_R;
task->buffers[2].handle =
starpu_data_get_sub_data(C_handle, 2, taskx, tasky);
task->buffers[2].mode = STARPU_RW;
starpu_task_submit(task, NULL);
}
}
}
static struct starpu_task * create_task_11(starpu_data_handle_t dataA, unsigned k)
{
/* FPRINTF(stdout, "task 11 k = %d TAG = %llx\n", k, (TAG11(k))); */
struct starpu_task *task = create_task(TAG11(k));
task->cl = &cl11;
/* which sub-data is manipulated ? */
task->handles[0] = starpu_data_get_sub_data(dataA, 2, k, k);
/* this is an important task */
if (!noprio)
task->priority = STARPU_MAX_PRIO;
/* enforce dependencies ... */
if (k > 0)
{
starpu_tag_declare_deps(TAG11(k), 1, TAG22(k-1, k, k));
}
int n = starpu_matrix_get_nx(task->handles[0]);
task->flops = FLOPS_SPOTRF(n);
return task;
}
static int create_task_12(starpu_data_handle_t dataA, unsigned k, unsigned j)
{
int ret;
struct starpu_task *task = starpu_task_create();
task->cl = &cl12;
/* which sub-data is manipulated ? */
task->handles[0] = starpu_data_get_sub_data(dataA, 2, k, k);
task->handles[1] = starpu_data_get_sub_data(dataA, 2, j, k);
task->tag_id = TAG12(k,j);
if (!no_prio && (j == k+1))
task->priority = STARPU_MAX_PRIO;
ret = starpu_task_submit(task);
if (ret != -ENODEV) STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
return ret;
}
static void create_task_22(starpu_data_handle_t dataA, unsigned k, unsigned i, unsigned j)
{
/* FPRINTF(stdout, "task 22 k,i,j = %d,%d,%d TAG = %llx\n", k,i,j, TAG22(k,i,j)); */
struct starpu_task *task = create_task(TAG22(k, i, j));
task->cl = &cl22;
/* which sub-data is manipulated ? */
task->handles[0] = starpu_data_get_sub_data(dataA, 2, k, i);
task->handles[1] = starpu_data_get_sub_data(dataA, 2, k, j);
task->handles[2] = starpu_data_get_sub_data(dataA, 2, i, j);
if (!noprio && (i == k + 1) && (j == k +1) )
{
task->priority = STARPU_MAX_PRIO;
}
/* enforce dependencies ... */
if (k > 0)
{
starpu_tag_declare_deps(TAG22(k, i, j), 3, TAG22(k-1, i, j), TAG21(k, i), TAG21(k, j));
}
else
{
starpu_tag_declare_deps(TAG22(k, i, j), 2, TAG21(k, i), TAG21(k, j));
}
int n = starpu_matrix_get_nx(task->handles[0]);
task->flops = FLOPS_SGEMM(n, n, n);
int ret = starpu_task_submit(task);
if (STARPU_UNLIKELY(ret == -ENODEV))
{
FPRINTF(stderr, "No worker may execute this task\n");
exit(0);
}
}
static int create_task_22(starpu_data_handle_t dataA, unsigned k, unsigned i, unsigned j, unsigned reclevel)
{
int ret;
/* FPRINTF(stdout, "task 22 k,i,j = %d,%d,%d TAG = %llx\n", k,i,j, TAG22_AUX(k,i,j)); */
struct starpu_task *task = create_task(TAG22_AUX(k, i, j, reclevel));
task->cl = &cl22;
/* which sub-data is manipulated ? */
task->handles[0] = starpu_data_get_sub_data(dataA, 2, k, i);
task->handles[1] = starpu_data_get_sub_data(dataA, 2, k, j);
task->handles[2] = starpu_data_get_sub_data(dataA, 2, i, j);
if ( (i == k + 1) && (j == k +1) )
{
task->priority = STARPU_MAX_PRIO;
}
/* enforce dependencies ... */
if (k > 0)
{
starpu_tag_declare_deps(TAG22_AUX(k, i, j, reclevel), 3, TAG22_AUX(k-1, i, j, reclevel), TAG21_AUX(k, i, reclevel), TAG21_AUX(k, j, reclevel));
}
else
{
starpu_tag_declare_deps(TAG22_AUX(k, i, j, reclevel), 2, TAG21_AUX(k, i, reclevel), TAG21_AUX(k, j, reclevel));
}
int n = starpu_matrix_get_nx(task->handles[0]);
task->flops = FLOPS_SGEMM(n, n, n);
ret = starpu_task_submit(task);
if (ret != -ENODEV) STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
return ret;
}
static int create_task_11(starpu_data_handle_t dataA, unsigned k)
{
int ret;
struct starpu_task *task = starpu_task_create();
task->cl = &cl11;
/* which sub-data is manipulated ? */
task->handles[0] = starpu_data_get_sub_data(dataA, 2, k, k);
task->tag_id = TAG11(k);
/* this is an important task */
if (!no_prio)
task->priority = STARPU_MAX_PRIO;
ret = starpu_task_submit(task);
if (ret != -ENODEV) STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
return ret;
}
int main(int argc, char **argv)
{
int ret;
assert(HEIGHT % (2*BLOCK_HEIGHT) == 0);
assert(HEIGHT % FACTOR == 0);
parse_args(argc, argv);
/* fprintf(stderr, "Reading input file ...\n"); */
/* how many frames ? */
struct stat stbuf;
stat(filename_in, &stbuf);
size_t filesize = stbuf.st_size;
unsigned nframes = filesize/FRAMESIZE;
/* fprintf(stderr, "filesize %lx (FRAME SIZE %lx NEW SIZE %lx); nframes %d\n", filesize, FRAMESIZE, NEW_FRAMESIZE, nframes); */
assert((filesize % sizeof(struct yuv_frame)) == 0);
struct yuv_frame *yuv_in_buffer = (struct yuv_frame *) malloc(nframes*FRAMESIZE);
assert(yuv_in_buffer);
/* fprintf(stderr, "Alloc output file ...\n"); */
struct yuv_new_frame *yuv_out_buffer = (struct yuv_new_frame *) calloc(nframes, NEW_FRAMESIZE);
assert(yuv_out_buffer);
/* fetch input data */
FILE *f_in = fopen(filename_in, "r");
assert(f_in);
/* allocate room for an output buffer */
FILE *f_out = fopen(filename_out, "w+");
assert(f_out);
fread(yuv_in_buffer, FRAMESIZE, nframes, f_in);
starpu_data_handle_t *frame_y_handle = (starpu_data_handle_t *) calloc(nframes, sizeof(starpu_data_handle_t));
starpu_data_handle_t *frame_u_handle = (starpu_data_handle_t *) calloc(nframes, sizeof(starpu_data_handle_t));
starpu_data_handle_t *frame_v_handle = (starpu_data_handle_t *) calloc(nframes, sizeof(starpu_data_handle_t));
starpu_data_handle_t *new_frame_y_handle = (starpu_data_handle_t *) calloc(nframes, sizeof(starpu_data_handle_t));
starpu_data_handle_t *new_frame_u_handle = (starpu_data_handle_t *) calloc(nframes, sizeof(starpu_data_handle_t));
starpu_data_handle_t *new_frame_v_handle = (starpu_data_handle_t *) calloc(nframes, sizeof(starpu_data_handle_t));
ret = starpu_init(NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
/* register and partition all layers */
unsigned frame;
for (frame = 0; frame < nframes; frame++)
{
/* register Y layer */
starpu_matrix_data_register(&frame_y_handle[frame], STARPU_MAIN_RAM,
(uintptr_t)&yuv_in_buffer[frame].y,
WIDTH, WIDTH, HEIGHT, sizeof(uint8_t));
starpu_data_partition(frame_y_handle[frame], &filter_y);
starpu_matrix_data_register(&new_frame_y_handle[frame], STARPU_MAIN_RAM,
(uintptr_t)&yuv_out_buffer[frame].y,
NEW_WIDTH, NEW_WIDTH, NEW_HEIGHT, sizeof(uint8_t));
starpu_data_partition(new_frame_y_handle[frame], &filter_y);
/* register U layer */
starpu_matrix_data_register(&frame_u_handle[frame], STARPU_MAIN_RAM,
(uintptr_t)&yuv_in_buffer[frame].u,
WIDTH/2, WIDTH/2, HEIGHT/2, sizeof(uint8_t));
starpu_data_partition(frame_u_handle[frame], &filter_uv);
starpu_matrix_data_register(&new_frame_u_handle[frame], STARPU_MAIN_RAM,
(uintptr_t)&yuv_out_buffer[frame].u,
NEW_WIDTH/2, NEW_WIDTH/2, NEW_HEIGHT/2, sizeof(uint8_t));
starpu_data_partition(new_frame_u_handle[frame], &filter_uv);
/* register V layer */
starpu_matrix_data_register(&frame_v_handle[frame], STARPU_MAIN_RAM,
(uintptr_t)&yuv_in_buffer[frame].v,
WIDTH/2, WIDTH/2, HEIGHT/2, sizeof(uint8_t));
starpu_data_partition(frame_v_handle[frame], &filter_uv);
starpu_matrix_data_register(&new_frame_v_handle[frame], STARPU_MAIN_RAM,
(uintptr_t)&yuv_out_buffer[frame].v,
NEW_WIDTH/2, NEW_WIDTH/2, NEW_HEIGHT/2, sizeof(uint8_t));
starpu_data_partition(new_frame_v_handle[frame], &filter_uv);
}
/* how many tasks are there ? */
unsigned nblocks_y = filter_y.nchildren;
unsigned nblocks_uv = filter_uv.nchildren;
unsigned ntasks = (nblocks_y + 2*nblocks_uv)*nframes;
fprintf(stderr, "Start computation: there will be %u tasks for %u frames\n", ntasks, nframes);
start = starpu_timing_now();
/* do the computation */
for (frame = 0; frame < nframes; frame++)
{
unsigned blocky;
for (blocky = 0; blocky < nblocks_y; blocky++)
{
struct starpu_task *task = starpu_task_create();
task->cl = &ds_codelet;
/* input */
task->handles[0] = starpu_data_get_sub_data(frame_y_handle[frame], 1, blocky);
/* output */
task->handles[1] = starpu_data_get_sub_data(new_frame_y_handle[frame], 1, blocky);
ret = starpu_task_submit(task);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
unsigned blocku;
for (blocku = 0; blocku < nblocks_uv; blocku++)
{
struct starpu_task *task = starpu_task_create();
task->cl = &ds_codelet;
/* input */
task->handles[0] = starpu_data_get_sub_data(frame_u_handle[frame], 1, blocku);
/* output */
task->handles[1] = starpu_data_get_sub_data(new_frame_u_handle[frame], 1, blocku);
ret = starpu_task_submit(task);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
unsigned blockv;
for (blockv = 0; blockv < nblocks_uv; blockv++)
{
struct starpu_task *task = starpu_task_create();
task->cl = &ds_codelet;
/* input */
task->handles[0] = starpu_data_get_sub_data(frame_v_handle[frame], 1, blockv);
/* output */
task->handles[1] = starpu_data_get_sub_data(new_frame_v_handle[frame], 1, blockv);
ret = starpu_task_submit(task);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
}
/* make sure all output buffers are sync'ed */
for (frame = 0; frame < nframes; frame++)
{
starpu_data_unregister(frame_y_handle[frame]);
starpu_data_unregister(frame_u_handle[frame]);
starpu_data_unregister(frame_v_handle[frame]);
starpu_data_unregister(new_frame_y_handle[frame]);
starpu_data_unregister(new_frame_u_handle[frame]);
starpu_data_unregister(new_frame_v_handle[frame]);
}
/* There is an implicit barrier: the unregister methods will block
* until the computation is done and that the result was put back into
* memory. */
end = starpu_timing_now();
double timing = end - start;
printf("# s\tFPS\n");
printf("%f\t%f\n", timing/1000000, (1000000*nframes)/timing);
fwrite(yuv_out_buffer, NEW_FRAMESIZE, nframes, f_out);
/* partition the layers into smaller parts */
starpu_shutdown();
if (fclose(f_in) != 0)
fprintf(stderr, "Could not close %s properly\n", filename_in);
if (fclose(f_out) != 0)
fprintf(stderr, "Could not close %s properly\n", filename_out);
return 0;
}
int main(int argc, char **argv)
{
unsigned *foo;
starpu_data_handle_t handle;
int ret;
unsigned n, i, size;
ret = starpu_initialize(NULL, &argc, &argv);
if (ret == -ENODEV) return STARPU_TEST_SKIPPED;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
#ifdef STARPU_USE_OPENCL
ret = starpu_opencl_load_opencl_from_file("tests/datawizard/scal_opencl.cl", &opencl_program, NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_load_opencl_from_file");
#endif
n = starpu_worker_get_count();
if (n == 1)
{
starpu_shutdown();
return STARPU_TEST_SKIPPED;
}
size = 10 * n;
foo = (unsigned *) calloc(size, sizeof(*foo));
for (i = 0; i < size; i++)
foo[i] = i;
starpu_vector_data_register(&handle, STARPU_MAIN_RAM, (uintptr_t)foo, size, sizeof(*foo));
/* Broadcast the data to force in-place partitioning */
for (i = 0; i < n; i++)
starpu_data_prefetch_on_node(handle, starpu_worker_get_memory_node(i), 0);
struct starpu_data_filter f =
{
.filter_func = starpu_vector_filter_block,
.nchildren = n,
};
starpu_data_partition(handle, &f);
for (i = 0; i < f.nchildren; i++)
{
struct starpu_task *task = starpu_task_create();
task->handles[0] = starpu_data_get_sub_data(handle, 1, i);
task->cl = &scal_codelet;
task->execute_on_a_specific_worker = 1;
task->workerid = i;
ret = starpu_task_submit(task);
if (ret == -ENODEV) goto enodev;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
ret = starpu_task_wait_for_all();
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_wait_for_all");
starpu_data_unpartition(handle, STARPU_MAIN_RAM);
starpu_data_unregister(handle);
starpu_shutdown();
ret = EXIT_SUCCESS;
for (i = 0; i < size; i++)
{
if (foo[i] != i*2)
{
FPRINTF(stderr,"value %u is %u instead of %u\n", i, foo[i], 2*i);
ret = EXIT_FAILURE;
}
}
return ret;
enodev:
starpu_data_unregister(handle);
fprintf(stderr, "WARNING: No one can execute this task\n");
/* yes, we do not perform the computation but we did detect that no one
* could perform the kernel, so this is not an error from StarPU */
starpu_shutdown();
return STARPU_TEST_SKIPPED;
}
int main(int argc, char **argv)
{
int ret, exit_value = 0;
/* Initialize StarPU */
ret = starpu_init(NULL);
if (ret == -ENODEV)
return 77;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
#ifdef STARPU_USE_OPENCL
ret = starpu_opencl_load_opencl_from_file("examples/axpy/axpy_opencl_kernel.cl",
&opencl_program, NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_load_opencl_from_file");
#endif
starpu_cublas_init();
/* This is equivalent to
vec_a = malloc(N*sizeof(TYPE));
vec_b = malloc(N*sizeof(TYPE));
*/
starpu_malloc((void **)&_vec_x, N*sizeof(TYPE));
assert(_vec_x);
starpu_malloc((void **)&_vec_y, N*sizeof(TYPE));
assert(_vec_y);
unsigned i;
for (i = 0; i < N; i++)
{
_vec_x[i] = 1.0f; /*(TYPE)starpu_drand48(); */
_vec_y[i] = 4.0f; /*(TYPE)starpu_drand48(); */
}
FPRINTF(stderr, "BEFORE x[0] = %2.2f\n", _vec_x[0]);
FPRINTF(stderr, "BEFORE y[0] = %2.2f\n", _vec_y[0]);
/* Declare the data to StarPU */
starpu_vector_data_register(&_handle_x, STARPU_MAIN_RAM, (uintptr_t)_vec_x, N, sizeof(TYPE));
starpu_vector_data_register(&_handle_y, STARPU_MAIN_RAM, (uintptr_t)_vec_y, N, sizeof(TYPE));
/* Divide the vector into blocks */
struct starpu_data_filter block_filter =
{
.filter_func = starpu_vector_filter_block,
.nchildren = NBLOCKS
};
starpu_data_partition(_handle_x, &block_filter);
starpu_data_partition(_handle_y, &block_filter);
double start;
double end;
start = starpu_timing_now();
unsigned b;
for (b = 0; b < NBLOCKS; b++)
{
struct starpu_task *task = starpu_task_create();
task->cl = &axpy_cl;
task->cl_arg = &_alpha;
task->cl_arg_size = sizeof(_alpha);
task->handles[0] = starpu_data_get_sub_data(_handle_x, 1, b);
task->handles[1] = starpu_data_get_sub_data(_handle_y, 1, b);
task->tag_id = b;
ret = starpu_task_submit(task);
if (ret == -ENODEV)
{
exit_value = 77;
goto enodev;
}
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
starpu_task_wait_for_all();
enodev:
starpu_data_unpartition(_handle_x, STARPU_MAIN_RAM);
starpu_data_unpartition(_handle_y, STARPU_MAIN_RAM);
starpu_data_unregister(_handle_x);
starpu_data_unregister(_handle_y);
end = starpu_timing_now();
double timing = end - start;
FPRINTF(stderr, "timing -> %2.2f us %2.2f MB/s\n", timing, 3*N*sizeof(TYPE)/timing);
FPRINTF(stderr, "AFTER y[0] = %2.2f (ALPHA = %2.2f)\n", _vec_y[0], _alpha);
if (exit_value != 77)
exit_value = check();
starpu_free((void *)_vec_x);
starpu_free((void *)_vec_y);
#ifdef STARPU_USE_OPENCL
ret = starpu_opencl_unload_opencl(&opencl_program);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_unload_opencl");
#endif
/* Stop StarPU */
starpu_shutdown();
return exit_value;
}
starpu_data_handle_t get_block_with_striding(starpu_data_handle_t *dataAp,
unsigned nblocks STARPU_ATTRIBUTE_UNUSED, unsigned j, unsigned i)
{
/* we use filters */
return starpu_data_get_sub_data(*dataAp, 2, j, i);
}
starpu_data_handle get_block_with_striding(starpu_data_handle *dataAp,
unsigned nblocks __attribute__((unused)), unsigned j, unsigned i)
{
/* we use filters */
return starpu_data_get_sub_data(*dataAp, 2, j, i);
}
int main(int argc, char **argv)
{
double start, end;
int ret;
parse_args(argc, argv);
#ifdef STARPU_QUICK_CHECK
niter /= 10;
#endif
ret = starpu_init(NULL);
if (ret == -ENODEV)
return 77;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
starpu_cublas_init();
init_problem_data();
partition_mult_data();
if (bound)
starpu_bound_start(0, 0);
start = starpu_timing_now();
unsigned x, y, iter;
for (iter = 0; iter < niter; iter++)
{
for (x = 0; x < nslicesx; x++)
for (y = 0; y < nslicesy; y++)
{
struct starpu_task *task = starpu_task_create();
task->cl = &cl;
task->handles[0] = starpu_data_get_sub_data(A_handle, 1, y);
task->handles[1] = starpu_data_get_sub_data(B_handle, 1, x);
task->handles[2] = starpu_data_get_sub_data(C_handle, 2, x, y);
task->flops = 2ULL * (xdim/nslicesx) * (ydim/nslicesy) * zdim;
ret = starpu_task_submit(task);
if (ret == -ENODEV)
{
ret = 77;
goto enodev;
}
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
starpu_task_wait_for_all();
}
end = starpu_timing_now();
if (bound)
starpu_bound_stop();
double timing = end - start;
double min, min_int;
double flops = 2.0*((unsigned long long)niter)*((unsigned long long)xdim)
*((unsigned long long)ydim)*((unsigned long long)zdim);
if (bound)
starpu_bound_compute(&min, &min_int, 1);
PRINTF("# x\ty\tz\tms\tGFlops");
if (bound)
PRINTF("\tTms\tTGFlops\tTims\tTiGFlops");
PRINTF("\n");
PRINTF("%u\t%u\t%u\t%.0f\t%.1f", xdim, ydim, zdim, timing/niter/1000.0, flops/timing/1000.0);
if (bound)
PRINTF("\t%.0f\t%.1f\t%.0f\t%.1f", min, flops/min/1000000.0, min_int, flops/min_int/1000000.0);
PRINTF("\n");
enodev:
starpu_data_unpartition(C_handle, STARPU_MAIN_RAM);
starpu_data_unpartition(B_handle, STARPU_MAIN_RAM);
starpu_data_unpartition(A_handle, STARPU_MAIN_RAM);
starpu_data_unregister(A_handle);
starpu_data_unregister(B_handle);
starpu_data_unregister(C_handle);
if (check)
check_output();
starpu_free(A);
starpu_free(B);
starpu_free(C);
starpu_cublas_shutdown();
starpu_shutdown();
return ret;
}
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;
}
void launch_spmv_codelets(void)
{
struct starpu_task *task_tab;
uint8_t *is_entry_tab;
int ret;
/* we call one codelet per block */
unsigned nblocks = starpu_bcsr_get_nnz(sparse_matrix);
unsigned nrows = starpu_bcsr_get_nrow(sparse_matrix);
remainingtasks = NSPMV*nblocks;
totaltasks = remainingtasks;
unsigned taskid = 0;
task_tab = calloc(totaltasks, sizeof(struct starpu_task));
STARPU_ASSERT(task_tab);
is_entry_tab = calloc(totaltasks, sizeof(uint8_t));
STARPU_ASSERT(is_entry_tab);
printf("there will be %d codelets\n", remainingtasks);
uint32_t *rowptr = starpu_bcsr_get_local_rowptr(sparse_matrix);
uint32_t *colind = starpu_bcsr_get_local_colind(sparse_matrix);
start = starpu_timing_now();
unsigned loop;
for (loop = 0; loop < NSPMV; loop++)
{
unsigned row;
unsigned part = 0;
for (row = 0; row < nrows; row++)
{
unsigned index;
if (rowptr[row] == rowptr[row+1])
{
continue;
}
for (index = rowptr[row]; index < rowptr[row+1]; index++, part++)
{
struct starpu_task *task = &task_tab[taskid];
starpu_task_init(task);
task->use_tag = 1;
task->tag_id = taskid;
task->callback_func = init_problem_callback;
task->callback_arg = &remainingtasks;
task->cl = &cl;
task->cl_arg = NULL;
unsigned i = colind[index];
unsigned j = row;
task->handles[0] = starpu_data_get_sub_data(sparse_matrix, 1, part);
task->handles[1] = starpu_data_get_sub_data(vector_in, 1, i);
task->handles[2] = starpu_data_get_sub_data(vector_out, 1, j);
/* all tasks in the same row are dependant so that we don't wait too much for data
* we need to wait on the previous task if we are not the first task of a row */
if (index != rowptr[row & ~0x3])
{
/* this is not the first task in the row */
starpu_tag_declare_deps((starpu_tag_t)taskid, 1, (starpu_tag_t)(taskid-1));
is_entry_tab[taskid] = 0;
}
else
{
/* this is an entry task */
is_entry_tab[taskid] = 1;
}
taskid++;
}
}
}
printf("start submitting tasks !\n");
/* submit ALL tasks now */
unsigned nchains = 0;
unsigned task;
for (task = 0; task < totaltasks; task++)
{
if (is_entry_tab[task])
{
nchains++;
}
ret = starpu_task_submit(&task_tab[task]);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
}
printf("end of task submission (there was %d chains for %d tasks : ratio %d tasks per chain) !\n", nchains, totaltasks, totaltasks/nchains);
}
int main(int argc, char **argv)
{
int ret;
unsigned part;
double timing;
double start, end;
unsigned row, pos;
unsigned ind;
/* CSR matrix description */
float *nzval;
uint32_t nnz;
uint32_t *colind;
uint32_t *rowptr;
/* Input and Output vectors */
float *vector_in_ptr;
float *vector_out_ptr;
/*
* Parse command-line arguments
*/
parse_args(argc, argv);
/*
* Launch StarPU
*/
ret = starpu_init(NULL);
if (ret == -ENODEV)
return 77;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
/*
* Create a 3-band sparse matrix as input example
*/
nnz = 3*size-2;
starpu_malloc((void **)&nzval, nnz*sizeof(float));
starpu_malloc((void **)&colind, nnz*sizeof(uint32_t));
starpu_malloc((void **)&rowptr, (size+1)*sizeof(uint32_t));
assert(nzval && colind && rowptr);
/* fill the matrix */
for (row = 0, pos = 0; row < size; row++)
{
rowptr[row] = pos;
if (row > 0)
{
nzval[pos] = 1.0f;
colind[pos] = row-1;
pos++;
}
nzval[pos] = 5.0f;
colind[pos] = row;
pos++;
if (row < size - 1)
{
nzval[pos] = 1.0f;
colind[pos] = row+1;
pos++;
}
}
STARPU_ASSERT(pos == nnz);
rowptr[size] = nnz;
/* initiate the 2 vectors */
starpu_malloc((void **)&vector_in_ptr, size*sizeof(float));
starpu_malloc((void **)&vector_out_ptr, size*sizeof(float));
assert(vector_in_ptr && vector_out_ptr);
/* fill them */
for (ind = 0; ind < size; ind++)
{
vector_in_ptr[ind] = 2.0f;
vector_out_ptr[ind] = 0.0f;
}
/*
* Register the CSR matrix and the 2 vectors
*/
starpu_csr_data_register(&sparse_matrix, STARPU_MAIN_RAM, nnz, size, (uintptr_t)nzval, colind, rowptr, 0, sizeof(float));
starpu_vector_data_register(&vector_in, STARPU_MAIN_RAM, (uintptr_t)vector_in_ptr, size, sizeof(float));
starpu_vector_data_register(&vector_out, STARPU_MAIN_RAM, (uintptr_t)vector_out_ptr, size, sizeof(float));
/*
* Partition the CSR matrix and the output vector
*/
csr_f.nchildren = nblocks;
vector_f.nchildren = nblocks;
starpu_data_partition(sparse_matrix, &csr_f);
starpu_data_partition(vector_out, &vector_f);
/*
* If we use OpenCL, we need to compile the SpMV kernel
*/
#ifdef STARPU_USE_OPENCL
compile_spmv_opencl_kernel();
#endif
start = starpu_timing_now();
/*
* Create and submit StarPU tasks
*/
for (part = 0; part < nblocks; part++)
{
struct starpu_task *task = starpu_task_create();
task->cl = &spmv_cl;
task->handles[0] = starpu_data_get_sub_data(sparse_matrix, 1, part);
task->handles[1] = vector_in;
task->handles[2] = starpu_data_get_sub_data(vector_out, 1, part);
ret = starpu_task_submit(task);
if (STARPU_UNLIKELY(ret == -ENODEV))
{
FPRINTF(stderr, "No worker may execute this task\n");
exit(0);
}
}
starpu_task_wait_for_all();
end = starpu_timing_now();
/*
* Unregister the CSR matrix and the output vector
*/
starpu_data_unpartition(sparse_matrix, STARPU_MAIN_RAM);
starpu_data_unpartition(vector_out, STARPU_MAIN_RAM);
/*
* Unregister data
*/
starpu_data_unregister(sparse_matrix);
starpu_data_unregister(vector_in);
starpu_data_unregister(vector_out);
/*
* Display the result
*/
for (row = 0; row < STARPU_MIN(size, 16); row++)
{
FPRINTF(stdout, "%2.2f\t%2.2f\n", vector_in_ptr[row], vector_out_ptr[row]);
}
starpu_free(nzval);
starpu_free(colind);
starpu_free(rowptr);
starpu_free(vector_in_ptr);
starpu_free(vector_out_ptr);
/*
* Stop StarPU
*/
starpu_shutdown();
timing = end - start;
FPRINTF(stderr, "Computation took (in ms)\n");
FPRINTF(stdout, "%2.2f\n", timing/1000);
return 0;
}
