/** @addtogroup m_task_management
*
- *
- * Since most scheduling algorithms rely on a concept of task
- * that can be either <em>computed</em> locally or
- * <em>transferred</em> on another processor, it seems to be the
- * right level of abstraction for our purposes. A <em>task</em>
- * may then be defined by a <em>computing amount</em>, a
- * <em>message size</em> and some <em>private data</em>.
+ * Since most scheduling algorithms rely on a concept of task that can be either <em>computed</em> locally or
+ * <em>transferred</em> on another processor, it seems to be the right level of abstraction for our purposes.
+ * A <em>task</em> may then be defined by a <em>computing amount</em>, a <em>message size</em> and
+ * some <em>private data</em>.
*/
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_task, msg,
- "Logging specific to MSG (task)");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_task, msg, "Logging specific to MSG (task)");
/********************************* Task **************************************/
/** \ingroup m_task_management
* \brief Creates a new #msg_task_t.
*
- * A constructor for #msg_task_t taking four arguments and returning the
- corresponding object.
- * \param name a name for the object. It is for user-level information
- and can be NULL.
- * \param flop_amount a value of the processing amount (in flop)
- needed to process this new task. If 0, then it cannot be executed with
- MSG_task_execute(). This value has to be >=0.
- * \param message_size a value of the amount of data (in bytes) needed to
- transfer this new task. If 0, then it cannot be transfered with
- MSG_task_send() and MSG_task_recv(). This value has to be >=0.
- * \param data a pointer to any data may want to attach to the new
- object. It is for user-level information and can be NULL. It can
- be retrieved with the function \ref MSG_task_get_data.
+ * A constructor for #msg_task_t taking four arguments and returning the corresponding object.
+ * \param name a name for the object. It is for user-level information and can be NULL.
+ * \param flop_amount a value of the processing amount (in flop) needed to process this new task.
+ * If 0, then it cannot be executed with MSG_task_execute(). This value has to be >=0.
+ * \param message_size a value of the amount of data (in bytes) needed to transfer this new task. If 0, then it cannot
+ * be transfered with MSG_task_send() and MSG_task_recv(). This value has to be >=0.
+ * \param data a pointer to any data may want to attach to the new object. It is for user-level information and can
+ * be NULL. It can be retrieved with the function \ref MSG_task_get_data.
* \see msg_task_t
* \return The new corresponding object.
*/
-msg_task_t MSG_task_create(const char *name, double flop_amount,
- double message_size, void *data)
+msg_task_t MSG_task_create(const char *name, double flop_amount, double message_size, void *data)
{
msg_task_t task = xbt_new(s_msg_task_t, 1);
simdata_task_t simdata = xbt_new(s_simdata_task_t, 1);
/** \ingroup m_task_management
* \brief Creates a new #msg_task_t (a parallel one....).
*
- * A constructor for #msg_task_t taking six arguments and returning the
- corresponding object.
- * \param name a name for the object. It is for user-level information
- and can be NULL.
+ * A constructor for #msg_task_t taking six arguments and returning the corresponding object.
+ * \param name a name for the object. It is for user-level information and can be NULL.
* \param host_nb the number of hosts implied in the parallel task.
* \param host_list an array of \p host_nb msg_host_t.
* \param flops_amount an array of \p host_nb doubles.
- * flops_amount[i] is the total number of operations that have to be performed on host_list[i].
+ * flops_amount[i] is the total number of operations that have to be performed on host_list[i].
* \param bytes_amount an array of \p host_nb* \p host_nb doubles.
* \param data a pointer to any data may want to attach to the new object.
* It is for user-level information and can be NULL.
* \see msg_task_t
* \return The new corresponding object.
*/
-msg_task_t
-MSG_parallel_task_create(const char *name, int host_nb,
- const msg_host_t * host_list,
- double *flops_amount,
- double *bytes_amount, void *data)
+msg_task_t MSG_parallel_task_create(const char *name, int host_nb, const msg_host_t * host_list,
+ double *flops_amount, double *bytes_amount, void *data)
{
msg_task_t task = MSG_task_create(name, 0, 0, data);
simdata_task_t simdata = task->simdata;
return task;
}
-/*************** Begin GPU ***************/
-/** \ingroup m_task_management
- * \brief Creates a new #msg_gpu_task_t.
-
- * A constructor for #msg_gpu_task_t taking four arguments and returning
- a pointer to the new created GPU task.
-
- * \param name a name for the object. It is for user-level information
- and can be NULL.
-
- * \param flops_amount a value of the processing amount (in flop)
- needed to process this new task. If 0, then it cannot be executed with
- MSG_gpu_task_execute(). This value has to be >=0.
-
- * \param dispatch_latency time in seconds to load this task on the GPU
-
- * \param collect_latency time in seconds to transfer result from the GPU
- back to the CPU (host) when done
-
- * \see msg_gpu_task_t
- * \return The new corresponding object.
- */
-msg_gpu_task_t MSG_gpu_task_create(const char *name, double flops_amount,
- double dispatch_latency, double collect_latency)
-{
- msg_gpu_task_t task = xbt_new(s_msg_gpu_task_t, 1);
- simdata_gpu_task_t simdata = xbt_new(s_simdata_gpu_task_t, 1);
- task->simdata = simdata;
- /* Task structure */
- task->name = xbt_strdup(name);
-
- /* Simulator Data */
- simdata->flops_amount = flops_amount;
- simdata->dispatch_latency = dispatch_latency;
- simdata->collect_latency = collect_latency;
-
- /* TRACE_msg_gpu_task_create(task); FIXME*/
-
- return task;
-}
-/*************** End GPU ***************/
-
/** \ingroup m_task_management
* \brief Return the user data of a #msg_task_t.
*
- * This function checks whether \a task is a valid pointer or not and return
- the user data associated to \a task if it is possible.
+ * This function checks whether \a task is a valid pointer and return the user data associated to \a task if possible.
*/
void *MSG_task_get_data(msg_task_t task)
{
xbt_assert((task != NULL), "Invalid parameter");
-
return (task->data);
}
/** \ingroup m_task_management
* \brief Sets the user data of a #msg_task_t.
*
- * This function allows to associate a new pointer to
- the user data associated of \a task.
+ * This function allows to associate a new pointer to the user data associated of \a task.
*/
void MSG_task_set_data(msg_task_t task, void *data)
{
xbt_assert((task != NULL), "Invalid parameter");
-
task->data = data;
}
* \brief Sets a function to be called when a task has just been copied.
* \param callback a callback function
*/
-void MSG_task_set_copy_callback(void (*callback)
- (msg_task_t task, msg_process_t sender, msg_process_t receiver)) {
+void MSG_task_set_copy_callback(void (*callback) (msg_task_t task, msg_process_t sender, msg_process_t receiver)) {
msg_global->task_copy_callback = callback;
if (callback) {
SIMIX_comm_set_copy_data_callback(MSG_comm_copy_data_from_SIMIX);
- }
- else {
+ } else {
SIMIX_comm_set_copy_data_callback(SIMIX_comm_copy_pointer_callback);
}
}
/** \ingroup m_task_management
* \brief Destroy a #msg_task_t.
*
- * Destructor for #msg_task_t. Note that you should free user data, if any, \b
- * before calling this function.
+ * Destructor for #msg_task_t. Note that you should free user data, if any, \b before calling this function.
*
* Only the process that owns the task can destroy it.
* The owner changes after a successful send.
- * If a task is successfully sent, the receiver becomes the owner and is
- * supposed to destroy it. The sender should not use it anymore.
+ * If a task is successfully sent, the receiver becomes the owner and is supposed to destroy it. The sender should not
+ * use it anymore.
* If the task failed to be sent, the sender remains the owner of the task.
*/
msg_error_t MSG_task_destroy(msg_task_t task)
{
- smx_synchro_t action = NULL;
xbt_assert((task != NULL), "Invalid parameter");
if (task->simdata->isused) {
xbt_free(task->name);
- action = task->simdata->compute;
- if (action)
- simcall_execution_destroy(action);
+ if (task->simdata->compute)
+ task->simdata->compute->unref();
/* parallel tasks only */
xbt_free(task->simdata->host_list);
return MSG_OK;
}
-
/** \ingroup m_task_usage
* \brief Cancel a #msg_task_t.
- * \param task the task to cancel. If it was executed or transfered, it
- stops the process that were working on it.
+ * \param task the task to cancel. If it was executed or transfered, it stops the process that were working on it.
*/
msg_error_t MSG_task_cancel(msg_task_t task)
{
/** \ingroup m_task_management
* \brief Returns the remaining amount of flops needed to execute a task #msg_task_t.
*
- * Once a task has been processed, this amount is set to 0. If you want, you
- * can reset this value with #MSG_task_set_flops_amount before restarting the task.
+ * Once a task has been processed, this amount is set to 0. If you want, you can reset this value with
+ * #MSG_task_set_flops_amount before restarting the task.
*/
double MSG_task_get_flops_amount(msg_task_t task) {
-
if (task->simdata->compute) {
- return simcall_execution_get_remains(task->simdata->compute);
+ return task->simdata->compute->remains();
} else {
return task->simdata->flops_amount;
}
}
-
/** \ingroup m_task_management
* \brief set the computation amount needed to process a task #msg_task_t.
*
* \warning If the computation is ongoing (already started and not finished),
- * it is not modified by this call. Moreover, after its completion, the ongoing
- * execution with set the flops_amount to zero, overriding any value set during
- * the execution.
+ * it is not modified by this call. Moreover, after its completion, the ongoing execution with set the flops_amount to
+ * zero, overriding any value set during the execution.
*/
-
void MSG_task_set_flops_amount(msg_task_t task, double flops_amount)
{
task->simdata->flops_amount = flops_amount;
/** \ingroup m_task_management
* \brief set the amount data attached with a task #msg_task_t.
*
- * \warning If the transfer is ongoing (already started and not finished),
- * it is not modified by this call.
+ * \warning If the transfer is ongoing (already started and not finished), it is not modified by this call.
*/
-
void MSG_task_set_bytes_amount(msg_task_t task, double data_size)
{
task->simdata->bytes_amount = data_size;
}
-
/** \ingroup m_task_management
* \brief Returns the total amount received by a task #msg_task_t.
* If the communication does not exist it will return 0.
- * So, if the communication has FINISHED or FAILED it returns
- * zero.
+ * So, if the communication has FINISHED or FAILED it returns zero.
*/
double MSG_task_get_remaining_communication(msg_task_t task)
{
- xbt_assert((task != NULL)
- && (task->simdata != NULL), "Invalid parameter");
- XBT_DEBUG("calling simcall_communication_get_remains(%p)",
- task->simdata->comm);
- return simcall_comm_get_remains(task->simdata->comm);
+ XBT_DEBUG("calling simcall_communication_get_remains(%p)", task->simdata->comm);
+ return task->simdata->comm->remains();
}
-#ifdef HAVE_LATENCY_BOUND_TRACKING
-/** \ingroup m_task_management
- * \brief Return 1 if communication task is limited by latency, 0 otherwise
- *
- */
-int MSG_task_is_latency_bounded(msg_task_t task)
-{
- xbt_assert((task != NULL)
- && (task->simdata != NULL), "Invalid parameter");
- XBT_DEBUG("calling simcall_communication_is_latency_bounded(%p)",
- task->simdata->comm);
- return simcall_comm_is_latency_bounded(task->simdata->comm);
-}
-#endif
-
/** \ingroup m_task_management
* \brief Returns the size of the data attached to a task #msg_task_t.
- *
*/
double MSG_task_get_bytes_amount(msg_task_t task)
{
- xbt_assert((task != NULL)
- && (task->simdata != NULL), "Invalid parameter");
-
+ xbt_assert((task != NULL) && (task->simdata != NULL), "Invalid parameter");
return task->simdata->bytes_amount;
}
-
-
/** \ingroup m_task_management
- * \brief Changes the priority of a computation task. This priority doesn't affect
- * the transfer rate. A priority of 2 will make a task receive two times more
- * cpu power than the other ones.
- *
+ * \brief Changes the priority of a computation task. This priority doesn't affect the transfer rate. A priority of 2
+ * will make a task receive two times more cpu power than the other ones.
*/
void MSG_task_set_priority(msg_task_t task, double priority)
{
- xbt_assert((task != NULL)
- && (task->simdata != NULL), "Invalid parameter");
-
+ xbt_assert((task != NULL) && (task->simdata != NULL), "Invalid parameter");
task->simdata->priority = 1 / priority;
if (task->simdata->compute)
simcall_execution_set_priority(task->simdata->compute,
task->simdata->priority);
}
-
/** \ingroup m_task_management
* \brief Changes the maximum CPU utilization of a computation task.
* Unit is flops/s.
task->simdata->bound = bound;
if (task->simdata->compute)
- simcall_execution_set_bound(task->simdata->compute,
- task->simdata->bound);
+ simcall_execution_set_bound(task->simdata->compute, task->simdata->bound);
}
-
/** \ingroup m_task_management
* \brief Changes the CPU affinity of a computation task.
*
- * When pinning the given task to the first CPU core of the given host, use
- * 0x01 for the mask value. Each bit of the mask value corresponds to each CPU
- * core. See taskset(1) on Linux.
+ * When pinning the given task to the first CPU core of the given host, use 0x01 for the mask value. Each bit of the
+ * mask value corresponds to each CPU core. See taskset(1) on Linux.
*
* \param task a target task
* \param host the host having a multi-core CPU
* \param mask the bit mask of a new CPU affinity setting for the task
*
- *
* Usage:
* 0. Define a host with multiple cores.
* \<host id="PM0" power="1E8" core="2"/\>
*
* See examples/msg/cloud/multicore.c for more information.
*
- *
* Note:
* 1. The current code does not allow an affinity of a task to multiple cores.
- * The mask value 0x03 (i.e., a given task will be executed on the first core
- * or the second core) is not allowed. The mask value 0x01 or 0x02 works. See
- * cpu_cas01.c for details.
- *
- * 2. It is recommended to first compare simulation results in both the Lazy
- * and Full calculation modes (using --cfg=cpu/optim:Full or not). Fix
- * cpu_cas01.c if you find wrong results in the Lazy mode.
+ * The mask value 0x03 (i.e., a given task will be executed on the first core or the second core) is not allowed.
+ * The mask value 0x01 or 0x02 works. See cpu_cas01.c for details.
*
+ * 2. It is recommended to first compare simulation results in both the Lazy and Full calculation modes
+ * (using --cfg=cpu/optim:Full or not). Fix cpu_cas01.c if you find wrong results in the Lazy mode.
*/
void MSG_task_set_affinity(msg_task_t task, msg_host_t host, unsigned long mask)
{
if (mask == 0) {
/* 0 means clear */
- {
/* We need remove_ext() not throwing exception. */
void *ret = xbt_dict_get_or_null_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(msg_host_t));
if (ret != NULL)
xbt_dict_remove_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(host));
- }
} else
xbt_dict_set_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(host), (void *)(uintptr_t) mask, NULL);
- /* We set affinity data of this task. If the task is being executed, we
- * actually change the affinity setting of the task. Otherwise, this change
- * will be applied when the task is executed. */
-
+ /* We set affinity data of this task. If the task is being executed, we actually change the affinity setting of the
+ * task. Otherwise, this change will be applied when the task is executed. */
if (!task->simdata->compute) {
/* task is not yet executed */
- XBT_INFO("set affinity(0x%04lx@%s) for %s (not active now)", mask, MSG_host_get_name(host), MSG_task_get_name(task));
+ XBT_INFO("set affinity(0x%04lx@%s) for %s (not active now)", mask, MSG_host_get_name(host),
+ MSG_task_get_name(task));
return;
}
{
- smx_synchro_t compute = task->simdata->compute;
- msg_host_t host_now = compute->execution.host; // simix_private.h is necessary
+ simgrid::simix::Exec *compute = task->simdata->compute;
+ msg_host_t host_now = compute->host; // simix_private.h is necessary
if (host_now != host) {
/* task is not yet executed on this host */
- XBT_INFO("set affinity(0x%04lx@%s) for %s (not active now)", mask, MSG_host_get_name(host), MSG_task_get_name(task));
+ XBT_INFO("set affinity(0x%04lx@%s) for %s (not active now)", mask, MSG_host_get_name(host),
+ MSG_task_get_name(task));
return;
}
/* task is being executed on this host. so change the affinity now */
{
/* check it works. remove me if it works. */
- xbt_assert((unsigned long)(uintptr_t) xbt_dict_get_or_null_ext(task->simdata->affinity_mask_db, (char *) host, sizeof(msg_host_t)) == mask);
+ xbt_assert((unsigned long)(uintptr_t) xbt_dict_get_or_null_ext(task->simdata->affinity_mask_db,
+ (char *) host, sizeof(msg_host_t)) == mask);
}
XBT_INFO("set affinity(0x%04lx@%s) for %s", mask, MSG_host_get_name(host), MSG_task_get_name(task));
