e_smx_state_t execute(double flops) {
smx_activity_t s = simcall_execution_start(nullptr,flops,1.0/*priority*/,0./*bound*/);
return simcall_execution_wait(s);
}
/** \ingroup msg_task_usage
* \brief Executes a parallel task and waits for its termination.
*
* \param task a #msg_task_t to execute on the location on which the process is running.
*
* \return #MSG_OK if the task was successfully completed, #MSG_TASK_CANCELED
* or #MSG_HOST_FAILURE otherwise
*/
msg_error_t MSG_parallel_task_execute(msg_task_t task)
{
simdata_task_t simdata = task->simdata;
simdata_process_t p_simdata = (simdata_process_t) SIMIX_process_self_get_data();
e_smx_state_t comp_state;
msg_error_t status = MSG_OK;
TRACE_msg_task_execute_start(task);
xbt_assert((!simdata->compute) && !task->simdata->isused,
"This task is executed somewhere else. Go fix your code!");
XBT_DEBUG("Computing on %s", MSG_process_get_name(MSG_process_self()));
if (simdata->flops_amount == 0 && !simdata->host_nb) {
TRACE_msg_task_execute_end(task);
return MSG_OK;
}
try {
simdata->setUsed();
if (simdata->host_nb > 0) {
simdata->compute = static_cast<simgrid::simix::Exec*>(
simcall_execution_parallel_start(task->name, simdata->host_nb,simdata->host_list,
simdata->flops_parallel_amount, simdata->bytes_parallel_amount,
1.0, -1.0));
XBT_DEBUG("Parallel execution action created: %p", simdata->compute);
} else {
unsigned long affinity_mask =
(unsigned long)(uintptr_t) xbt_dict_get_or_null_ext(simdata->affinity_mask_db, (char *) p_simdata->m_host,
sizeof(msg_host_t));
XBT_DEBUG("execute %s@%s with affinity(0x%04lx)",
MSG_task_get_name(task), MSG_host_get_name(p_simdata->m_host), affinity_mask);
simdata->compute = static_cast<simgrid::simix::Exec*>(
simcall_execution_start(task->name, simdata->flops_amount, simdata->priority,
simdata->bound, affinity_mask));
}
simcall_set_category(simdata->compute, task->category);
p_simdata->waiting_action = simdata->compute;
comp_state = simcall_execution_wait(simdata->compute);
p_simdata->waiting_action = nullptr;
simdata->setNotUsed();
XBT_DEBUG("Execution task '%s' finished in state %d", task->name, (int)comp_state);
}
catch (xbt_ex& e) {
switch (e.category) {
case cancel_error:
status = MSG_TASK_CANCELED;
break;
case host_error:
status = MSG_HOST_FAILURE;
break;
default:
throw;
}
}
/* action ended, set comm and compute = nullptr, the actions is already destroyed in the main function */
simdata->flops_amount = 0.0;
simdata->comm = nullptr;
simdata->compute = nullptr;
TRACE_msg_task_execute_end(task);
MSG_RETURN(status);
}