void _starpu_worker_stop_sleeping(int workerid)
{
if (starpu_profiling_status_get())
{
struct timespec *sleeping_start, sleep_end_time;
_starpu_clock_gettime(&sleep_end_time);
STARPU_PTHREAD_MUTEX_LOCK(&worker_info_mutex[workerid]);
sleeping_start = &sleeping_start_date[workerid];
/* Perhaps that profiling was enabled while the worker was
* already blocked, so we don't measure (end - start), but
* (end - max(start,worker_start)) where worker_start is the
* date of the previous profiling info reset on the worker */
struct timespec *worker_start = &worker_info[workerid].start_time;
if (starpu_timespec_cmp(sleeping_start, worker_start, <))
{
/* sleeping_start < worker_start */
sleeping_start = worker_start;
}
struct timespec sleeping_time;
starpu_timespec_sub(&sleep_end_time, sleeping_start, &sleeping_time);
starpu_timespec_accumulate(&worker_info[workerid].sleeping_time, &sleeping_time);
worker_registered_sleeping_start[workerid] = 0;
STARPU_PTHREAD_MUTEX_UNLOCK(&worker_info_mutex[workerid]);
}
}
void _starpu_profiling_set_task_push_end_time(struct starpu_task *task)
{
if (!starpu_profiling_status_get())
return;
struct starpu_profiling_task_info *profiling_info;
profiling_info = task->profiling_info;
if (profiling_info)
_starpu_clock_gettime(&profiling_info->push_end_time);
}
static void _starpu_worker_reset_profiling_info_with_lock(int workerid)
{
_starpu_clock_gettime(&worker_info[workerid].start_time);
/* This is computed in a lazy fashion when the application queries
* profiling info. */
starpu_timespec_clear(&worker_info[workerid].total_time);
starpu_timespec_clear(&worker_info[workerid].executing_time);
starpu_timespec_clear(&worker_info[workerid].sleeping_time);
worker_info[workerid].executed_tasks = 0;
worker_info[workerid].used_cycles = 0;
worker_info[workerid].stall_cycles = 0;
worker_info[workerid].power_consumed = 0;
/* We detect if the worker is already sleeping or doing some
* computation */
enum _starpu_worker_status status = _starpu_worker_get_status(workerid);
if (status == STATUS_SLEEPING)
{
worker_registered_sleeping_start[workerid] = 1;
_starpu_clock_gettime(&sleeping_start_date[workerid]);
}
else
{
worker_registered_sleeping_start[workerid] = 0;
}
if (status == STATUS_EXECUTING)
{
worker_registered_executing_start[workerid] = 1;
_starpu_clock_gettime(&executing_start_date[workerid]);
}
else
{
worker_registered_executing_start[workerid] = 0;
}
}
void _starpu_worker_restart_sleeping(int workerid)
{
if (starpu_profiling_status_get())
{
struct timespec sleep_start_time;
_starpu_clock_gettime(&sleep_start_time);
STARPU_PTHREAD_MUTEX_LOCK(&worker_info_mutex[workerid]);
worker_registered_sleeping_start[workerid] = 1;
memcpy(&sleeping_start_date[workerid], &sleep_start_time, sizeof(struct timespec));
STARPU_PTHREAD_MUTEX_UNLOCK(&worker_info_mutex[workerid]);
}
}
int starpu_profiling_worker_get_info(int workerid, struct starpu_profiling_worker_info *info)
{
if (!starpu_profiling_status_get())
{
/* Not thread safe, shouldn't be too much a problem */
info->executed_tasks = worker_info[workerid].executed_tasks;
}
STARPU_PTHREAD_MUTEX_LOCK(&worker_info_mutex[workerid]);
if (info)
{
/* The total time is computed in a lazy fashion */
struct timespec now;
_starpu_clock_gettime(&now);
/* In case some worker is currently sleeping, we take into
* account the time spent since it registered. */
if (worker_registered_sleeping_start[workerid])
{
struct timespec sleeping_time;
starpu_timespec_sub(&now, &sleeping_start_date[workerid], &sleeping_time);
starpu_timespec_accumulate(&worker_info[workerid].sleeping_time, &sleeping_time);
}
if (worker_registered_executing_start[workerid])
{
struct timespec executing_time;
starpu_timespec_sub(&now, &executing_start_date[workerid], &executing_time);
starpu_timespec_accumulate(&worker_info[workerid].executing_time, &executing_time);
}
/* total_time = now - start_time */
starpu_timespec_sub(&now, &worker_info[workerid].start_time,
&worker_info[workerid].total_time);
memcpy(info, &worker_info[workerid], sizeof(struct starpu_profiling_worker_info));
}
_starpu_worker_reset_profiling_info_with_lock(workerid);
STARPU_PTHREAD_MUTEX_UNLOCK(&worker_info_mutex[workerid]);
return 0;
}
int starpu_bus_get_profiling_info(int busid, struct starpu_profiling_bus_info *bus_info)
{
int src_node = busid_to_node_pair[busid].src;
int dst_node = busid_to_node_pair[busid].dst;
/* XXX protect all this method with a mutex */
if (bus_info)
{
struct timespec now;
_starpu_clock_gettime(&now);
/* total_time = now - start_time */
starpu_timespec_sub(&now, &bus_profiling_info[src_node][dst_node].start_time,
&bus_profiling_info[src_node][dst_node].total_time);
memcpy(bus_info, &bus_profiling_info[src_node][dst_node], sizeof(struct starpu_profiling_bus_info));
}
_starpu_bus_reset_profiling_info(&bus_profiling_info[src_node][dst_node]);
return 0;
}
static void _starpu_bus_reset_profiling_info(struct starpu_profiling_bus_info *bus_info)
{
_starpu_clock_gettime(&bus_info->start_time);
bus_info->transferred_bytes = 0;
bus_info->transfer_count = 0;
}
struct starpu_task *_starpu_pop_task(struct _starpu_worker *worker)
{
struct starpu_task *task;
int worker_id;
unsigned node;
/* We can't tell in advance which task will be picked up, so we measure
* a timestamp, and will attribute it afterwards to the task. */
int profiling = starpu_profiling_status_get();
struct timespec pop_start_time;
if (profiling)
_starpu_clock_gettime(&pop_start_time);
pick:
/* perhaps there is some local task to be executed first */
task = _starpu_pop_local_task(worker);
/* get tasks from the stacks of the strategy */
if(!task)
{
struct _starpu_sched_ctx *sched_ctx ;
#ifndef STARPU_NON_BLOCKING_DRIVERS
int been_here[STARPU_NMAX_SCHED_CTXS];
int i;
for(i = 0; i < STARPU_NMAX_SCHED_CTXS; i++)
been_here[i] = 0;
while(!task)
#endif
{
if(worker->nsched_ctxs == 1)
sched_ctx = _starpu_get_initial_sched_ctx();
else
{
while(1)
{
sched_ctx = _get_next_sched_ctx_to_pop_into(worker);
if(worker->removed_from_ctx[sched_ctx->id] == 1 && worker->shares_tasks_lists[sched_ctx->id] == 1)
{
_starpu_worker_gets_out_of_ctx(sched_ctx->id, worker);
worker->removed_from_ctx[sched_ctx->id] = 0;
sched_ctx = NULL;
}
else
break;
}
}
if(sched_ctx && sched_ctx->id != STARPU_NMAX_SCHED_CTXS)
{
if (sched_ctx->sched_policy && sched_ctx->sched_policy->pop_task)
{
task = sched_ctx->sched_policy->pop_task(sched_ctx->id);
_starpu_pop_task_end(task);
}
}
if(!task)
{
/* it doesn't matter if it shares tasks list or not in the scheduler,
if it does not have any task to pop just get it out of here */
/* however if it shares a task list it will be removed as soon as he
finishes this job (in handle_job_termination) */
if(worker->removed_from_ctx[sched_ctx->id])
{
_starpu_worker_gets_out_of_ctx(sched_ctx->id, worker);
worker->removed_from_ctx[sched_ctx->id] = 0;
}
#ifdef STARPU_USE_SC_HYPERVISOR
if(worker->pop_ctx_priority)
{
struct starpu_sched_ctx_performance_counters *perf_counters = sched_ctx->perf_counters;
if(sched_ctx->id != 0 && perf_counters != NULL && perf_counters->notify_idle_cycle && _starpu_sched_ctx_allow_hypervisor(sched_ctx->id))
{
// _STARPU_TRACE_HYPERVISOR_BEGIN();
perf_counters->notify_idle_cycle(sched_ctx->id, worker->workerid, 1.0);
// _STARPU_TRACE_HYPERVISOR_END();
}
}
#endif //STARPU_USE_SC_HYPERVISOR
#ifndef STARPU_NON_BLOCKING_DRIVERS
if(been_here[sched_ctx->id] || worker->nsched_ctxs == 1)
break;
been_here[sched_ctx->id] = 1;
#endif
}
}
}
if (!task)
{
idle_start[worker->workerid] = starpu_timing_now();
return NULL;
}
if(idle_start[worker->workerid] != 0.0)
{
double idle_end = starpu_timing_now();
idle[worker->workerid] += (idle_end - idle_start[worker->workerid]);
idle_start[worker->workerid] = 0.0;
}
#ifdef STARPU_USE_SC_HYPERVISOR
struct _starpu_sched_ctx *sched_ctx = _starpu_get_sched_ctx_struct(task->sched_ctx);
struct starpu_sched_ctx_performance_counters *perf_counters = sched_ctx->perf_counters;
if(sched_ctx->id != 0 && perf_counters != NULL && perf_counters->notify_poped_task && _starpu_sched_ctx_allow_hypervisor(sched_ctx->id))
{
// _STARPU_TRACE_HYPERVISOR_BEGIN();
perf_counters->notify_poped_task(task->sched_ctx, worker->workerid);
// _STARPU_TRACE_HYPERVISOR_END();
}
#endif //STARPU_USE_SC_HYPERVISOR
/* Make sure we do not bother with all the multiformat-specific code if
* it is not necessary. */
if (!_starpu_task_uses_multiformat_handles(task))
goto profiling;
/* This is either a conversion task, or a regular task for which the
* conversion tasks have already been created and submitted */
if (task->mf_skip)
goto profiling;
/*
* This worker may not be able to execute this task. In this case, we
* should return the task anyway. It will be pushed back almost immediatly.
* This way, we avoid computing and executing the conversions tasks.
* Here, we do not care about what implementation is used.
*/
worker_id = starpu_worker_get_id();
if (!starpu_worker_can_execute_task_first_impl(worker_id, task, NULL))
return task;
node = starpu_worker_get_memory_node(worker_id);
/*
* We do have a task that uses multiformat handles. Let's create the
* required conversion tasks.
*/
STARPU_PTHREAD_MUTEX_UNLOCK(&worker->sched_mutex);
unsigned i;
unsigned nbuffers = STARPU_TASK_GET_NBUFFERS(task);
for (i = 0; i < nbuffers; i++)
{
struct starpu_task *conversion_task;
starpu_data_handle_t handle;
handle = STARPU_TASK_GET_HANDLE(task, i);
if (!_starpu_handle_needs_conversion_task(handle, node))
continue;
conversion_task = _starpu_create_conversion_task(handle, node);
conversion_task->mf_skip = 1;
conversion_task->execute_on_a_specific_worker = 1;
conversion_task->workerid = worker_id;
/*
* Next tasks will need to know where these handles have gone.
*/
handle->mf_node = node;
_starpu_task_submit_conversion_task(conversion_task, worker_id);
}
task->mf_skip = 1;
starpu_task_list_push_back(&worker->local_tasks, task);
STARPU_PTHREAD_MUTEX_LOCK(&worker->sched_mutex);
goto pick;
profiling:
if (profiling)
{
struct starpu_profiling_task_info *profiling_info;
profiling_info = task->profiling_info;
/* The task may have been created before profiling was enabled,
* so we check if the profiling_info structure is available
* even though we already tested if profiling is enabled. */
if (profiling_info)
{
memcpy(&profiling_info->pop_start_time,
&pop_start_time, sizeof(struct timespec));
_starpu_clock_gettime(&profiling_info->pop_end_time);
}
}
if(task->prologue_callback_pop_func)
task->prologue_callback_pop_func(task->prologue_callback_pop_arg);
return task;
}
