xbt_free(task->communication_amount);
xbt_free(task->computation_amount);
- xbt_mallocator_release(sd_global->task_mallocator,task);
- sd_global->task_number--;
-
#ifdef HAVE_TRACING
if (task->category) xbt_free(task->category);
#endif
+ xbt_mallocator_release(sd_global->task_mallocator,task);
+ sd_global->task_number--;
+
XBT_DEBUG("Task destroyed.");
}
/**
* \brief Sets the rate of a task
*
- * This will change the percentage of the available power or network bandwidth
- * a task can use.
+ * This will change the network bandwidth a task can use. This rate
+ * depends on both the nominal bandwidth on the route onto which the task is
+ * scheduled (\see SD_task_get_current_bandwidth) and the amount of data to
+ * transfer.
*
- * \param task a task
- * \param rate the new rate you want to associate with this task
+ * To divide the nominal bandwidth by 2, the rate then has to be :
+ * rate = bandwidth/(2*amount)
+ *
+ * \param task a \see SD_TASK_COMM_E2E task (end-to-end communication)
+ * \param rate the new rate you want to associate with this task.
*/
void SD_task_set_rate(SD_task_t task, double rate)
{
+ xbt_assert(task->kind == SD_TASK_COMM_E2E,
+ "The rate can be modified for end-to-end communications only.");
+
task->rate = rate;
}
SD_task_get_name(task));
if (__SD_task_is_scheduled_or_runnable(task) /* if the task is scheduled or runnable */
- &&task->kind == SD_TASK_NOT_TYPED) /* Don't free scheduling data for typed tasks */
+ && ((task->kind == SD_TASK_COMP_PAR_AMDAHL) ||
+ (task->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK))) { /* Don't free scheduling data for typed tasks */
__SD_task_destroy_scheduling_data(task);
+ task->workstation_list=NULL;
+ task->workstation_nb = 0;
+ }
if (__SD_task_is_running(task)) /* the task should become SD_FAILED */
surf_workstation_model->action_cancel(task->surf_action);
"Task '%s': workstation_list is NULL!",
SD_task_get_name(task));
-
-
XBT_DEBUG("Really running task '%s'", SD_task_get_name(task));
+ int workstation_nb = task->workstation_nb;
/* set this task as current task for the workstations in sequential mode */
- for (i = 0; i < task->workstation_nb; i++) {
+ for (i = 0; i < workstation_nb; i++) {
if (SD_workstation_get_access_mode(task->workstation_list[i]) ==
SD_WORKSTATION_SEQUENTIAL_ACCESS) {
task->workstation_list[i]->current_task = task;
/* we have to create a Surf workstation array instead of the SimDag
* workstation array */
- surf_workstations = xbt_new(void *, task->workstation_nb);
+ surf_workstations = xbt_new(void *, workstation_nb);
- for (i = 0; i < task->workstation_nb; i++)
+ for (i = 0; i < workstation_nb; i++)
surf_workstations[i] = task->workstation_list[i]->surf_workstation;
- /* It's allowed to pass a NULL vector as cost to mean vector of 0.0 (easing
- * user's life). Let's deal with it */
-#define cost_or_zero(array,pos) ((array)?(array)[pos]:0.0)
+ double *computation_amount = xbt_new0(double, workstation_nb);
+ double *communication_amount = xbt_new0(double, workstation_nb * workstation_nb);
- task->surf_action = NULL;
- if ((task->workstation_nb == 1)
- && (cost_or_zero(task->communication_amount, 0) == 0.0)) {
- task->surf_action =
- surf_workstation_model->extension.
- workstation.execute(surf_workstations[0],
- cost_or_zero(task->computation_amount, 0));
- } else if ((task->workstation_nb == 1)
- && (cost_or_zero(task->computation_amount, 0) == 0.0)) {
-
- task->surf_action =
- surf_workstation_model->extension.
- workstation.communicate(surf_workstations[0], surf_workstations[0],
- cost_or_zero(task->communication_amount,
- 0), task->rate);
- } else if ((task->workstation_nb == 2)
- && (cost_or_zero(task->computation_amount, 0) == 0.0)
- && (cost_or_zero(task->computation_amount, 1) == 0.0)) {
- int nb = 0;
- double value = 0.0;
-
- for (i = 0; i < task->workstation_nb * task->workstation_nb; i++) {
- if (cost_or_zero(task->communication_amount, i) > 0.0) {
- nb++;
- value = cost_or_zero(task->communication_amount, i);
- }
- }
- if (nb == 1) {
- task->surf_action =
- surf_workstation_model->extension.
- workstation.communicate(surf_workstations[0],
- surf_workstations[1], value, task->rate);
- }
- }
-#undef cost_or_zero
-
- if (!task->surf_action) {
- double *computation_amount = xbt_new(double, task->workstation_nb);
- double *communication_amount = xbt_new(double, task->workstation_nb *
- task->workstation_nb);
+ if(task->computation_amount)
memcpy(computation_amount, task->computation_amount, sizeof(double) *
- task->workstation_nb);
+ workstation_nb);
+ if(task->communication_amount)
memcpy(communication_amount, task->communication_amount,
- sizeof(double) * task->workstation_nb * task->workstation_nb);
+ sizeof(double) * workstation_nb * workstation_nb);
- task->surf_action =
+ task->surf_action =
surf_workstation_model->extension.
- workstation.execute_parallel_task(task->workstation_nb,
+ workstation.execute_parallel_task(workstation_nb,
surf_workstations,
computation_amount,
communication_amount,
task->rate);
- } else {
- xbt_free(surf_workstations);
- }
surf_workstation_model->action_data_set(task->surf_action, task);
xbt_assert(task->workstation_nb == count,"Got %d locations, but were expecting %d locations",count,task->workstation_nb);
for (i = 0; i < count; i++)
task->workstation_list[i] = list[i];
+ if (SD_task_get_kind(task)== SD_TASK_COMP_SEQ && !task->computation_amount){
+ /*This task has failed and is rescheduled. Reset the computation amount*/
+ task->computation_amount = xbt_new0(double, 1);
+ task->computation_amount[0] = task->remains;
+ }
SD_task_do_schedule(task);
break;
default:
task->communication_amount[2]);
}
- if (task->kind == SD_TASK_COMP_PAR_AMDAHL) {
- XBT_VERB("Schedule computation task %s on %d hosts. It costs %.f flops on each host",
- SD_task_get_name(task),
- task->workstation_nb,
- task->computation_amount[0]);
- }
/* Iterate over all childs and parent being COMM_E2E to say where I am located (and start them if runnable) */
if (task->kind == SD_TASK_COMP_SEQ) {
SD_workstation_get_name(before->workstation_list[1]),
before->communication_amount[2]);
}
- } else if (before->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK){
- if (!before->workstation_list){
- before->workstation_list = xbt_new0(SD_workstation_t, count);
- for (i=0;i<count;i++)
- before->workstation_list[i] = task->workstation_list[i];
- } else {
- int src_nb, dst_nb, src_start, src_end, dst_start, dst_end;
- src_nb = before->workstation_nb;
- dst_nb = count;
- before->workstation_list = (SD_workstation_t*) xbt_realloc(
- before->workstation_list,
- (before->workstation_nb+count)*sizeof(s_SD_workstation_t));
- for(i=0; i<count; i++)
- before->workstation_list[before->workstation_nb+i] =
- task->workstation_list[i];
-
- before->workstation_nb += count;
-
- before->computation_amount = xbt_new0(double,
- before->workstation_nb);
- before->communication_amount = xbt_new0(double,
- before->workstation_nb*
- before->workstation_nb);
-
- for(i=0;i<src_nb;i++){
- src_start = i*before->amount/src_nb;
- src_end = src_start + before->amount/src_nb;
- for(j=0; j<dst_nb; j++){
- dst_start = j*before->amount/dst_nb;
- dst_end = dst_start + before->amount/dst_nb;
- if ((src_end <= dst_start) || (dst_end <= src_start)) {
- before->communication_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
- } else {
- before->communication_amount[i*(src_nb+dst_nb)+src_nb+j] =
- MIN(src_end, dst_end)- MAX(src_start, dst_start);
- }
- }
- }
-
- if (__SD_task_is_schedulable(before) ||
- __SD_task_is_not_scheduled(before)) {
- SD_task_do_schedule(before);
- XBT_VERB
- ("Auto-Schedule redistribution task %s. Send %.f bytes from %d hosts to %d hosts.",
- SD_task_get_name(before),
- before->amount,
- src_nb, dst_nb);
- }
- }
}
}
xbt_dynar_foreach(task->tasks_after, cpt, dep) {
after->communication_amount[2]);
}
- } else if (after->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK){
- if (!after->workstation_list){
- after->workstation_list = xbt_new0(SD_workstation_t, count);
- for (i=0;i<count;i++)
- after->workstation_list[i] = task->workstation_list[i];
- } else {
- int src_nb, dst_nb, src_start, src_end, dst_start, dst_end;
- src_nb = count;;
- dst_nb = after->workstation_nb;
- after->workstation_list = (SD_workstation_t*) xbt_realloc(
- after->workstation_list,
- (after->workstation_nb+count)*sizeof(s_SD_workstation_t));
- for(i=after->workstation_nb - 1; i>=0; i--)
- after->workstation_list[count+i] = after->workstation_list[i];
-
- for(i=0; i<count; i++)
- after->workstation_list[i] = task->workstation_list[i];
-
- after->workstation_nb += count;
-
- after->computation_amount = xbt_new0(double, after->workstation_nb);
- after->communication_amount = xbt_new0(double,
- after->workstation_nb*
- after->workstation_nb);
-
- for(i=0;i<src_nb;i++){
- src_start = i*after->amount/src_nb;
- src_end = src_start + after->amount/src_nb;
- for(j=0; j<dst_nb; j++){
- dst_start = j*after->amount/dst_nb;
- dst_end = dst_start + after->amount/dst_nb;
- if ((src_end <= dst_start) || (dst_end <= src_start)) {
- after->communication_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
- } else {
- after->communication_amount[i*(src_nb+dst_nb)+src_nb+j] =
- MIN(src_end, dst_end)- MAX(src_start, dst_start);
- }
+ }
+ }
+ }
+ /* Iterate over all childs and parent being MXN_1D_BLOC to say where I am located (and start them if runnable) */
+ if (task->kind == SD_TASK_COMP_PAR_AMDAHL) {
+ XBT_VERB("Schedule computation task %s on %d workstations. %.f flops"
+ " will be distributed following Amdahl'Law",
+ SD_task_get_name(task), task->workstation_nb,
+ task->computation_amount[0]);
+ xbt_dynar_foreach(task->tasks_before, cpt, dep) {
+ SD_task_t before = dep->src;
+ if (before->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK){
+ if (!before->workstation_list){
+ XBT_VERB("Sender side of Task %s is not scheduled yet. Fill the workstation list with receiver side",
+ SD_task_get_name(before));
+ before->workstation_list = xbt_new0(SD_workstation_t, count);
+ before->workstation_nb = count;
+ for (i=0;i<count;i++)
+ before->workstation_list[i] = task->workstation_list[i];
+ } else {
+ int src_nb, dst_nb;
+ double src_start, src_end, dst_start, dst_end;
+ src_nb = before->workstation_nb;
+ dst_nb = count;
+ before->workstation_list = (SD_workstation_t*) xbt_realloc(
+ before->workstation_list,
+ (before->workstation_nb+count)*sizeof(s_SD_workstation_t));
+ for(i=0; i<count; i++)
+ before->workstation_list[before->workstation_nb+i] =
+ task->workstation_list[i];
+
+ before->workstation_nb += count;
+
+ before->computation_amount = xbt_new0(double,
+ before->workstation_nb);
+ before->communication_amount = xbt_new0(double,
+ before->workstation_nb*
+ before->workstation_nb);
+
+ for(i=0;i<src_nb;i++){
+ src_start = i*before->amount/src_nb;
+ src_end = src_start + before->amount/src_nb;
+ for(j=0; j<dst_nb; j++){
+ dst_start = j*before->amount/dst_nb;
+ dst_end = dst_start + before->amount/dst_nb;
+ XBT_VERB("(%s->%s): (%.2f, %.2f)-> (%.2f, %.2f)",
+ SD_workstation_get_name(before->workstation_list[i]),
+ SD_workstation_get_name(before->workstation_list[src_nb+j]),
+ src_start, src_end, dst_start, dst_end);
+ if ((src_end <= dst_start) || (dst_end <= src_start)) {
+ before->communication_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
+ } else {
+ before->communication_amount[i*(src_nb+dst_nb)+src_nb+j] =
+ MIN(src_end, dst_end) - MAX(src_start, dst_start);
}
+ XBT_VERB("==> %.2f",
+ before->communication_amount[i*(src_nb+dst_nb)+src_nb+j]);
}
+ }
- if (__SD_task_is_schedulable(after) ||
- __SD_task_is_not_scheduled(after)) {
- SD_task_do_schedule(after);
- XBT_VERB
+ if (__SD_task_is_schedulable(before) ||
+ __SD_task_is_not_scheduled(before)) {
+ SD_task_do_schedule(before);
+ XBT_VERB
("Auto-Schedule redistribution task %s. Send %.f bytes from %d hosts to %d hosts.",
- SD_task_get_name(after),after->amount, src_nb, dst_nb);
+ SD_task_get_name(before),before->amount, src_nb, dst_nb);
}
+ }
+ }
+ }
+ xbt_dynar_foreach(task->tasks_after, cpt, dep) {
+ SD_task_t after = dep->dst;
+ if (after->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK){
+ if (!after->workstation_list){
+ XBT_VERB("Receiver side of Task %s is not scheduled yet. Fill the workstation list with sender side",
+ SD_task_get_name(after));
+ after->workstation_list = xbt_new0(SD_workstation_t, count);
+ after->workstation_nb = count;
+ for (i=0;i<count;i++)
+ after->workstation_list[i] = task->workstation_list[i];
+ } else {
+ int src_nb, dst_nb;
+ double src_start, src_end, dst_start, dst_end;
+ src_nb = count;
+ dst_nb = after->workstation_nb;
+ after->workstation_list = (SD_workstation_t*) xbt_realloc(
+ after->workstation_list,
+ (after->workstation_nb+count)*sizeof(s_SD_workstation_t));
+ for(i=after->workstation_nb - 1; i>=0; i--)
+ after->workstation_list[count+i] = after->workstation_list[i];
+ for(i=0; i<count; i++)
+ after->workstation_list[i] = task->workstation_list[i];
+
+ after->workstation_nb += count;
+
+ after->computation_amount = xbt_new0(double, after->workstation_nb);
+ after->communication_amount = xbt_new0(double,
+ after->workstation_nb*
+ after->workstation_nb);
+
+ for(i=0;i<src_nb;i++){
+ src_start = i*after->amount/src_nb;
+ src_end = src_start + after->amount/src_nb;
+ for(j=0; j<dst_nb; j++){
+ dst_start = j*after->amount/dst_nb;
+ dst_end = dst_start + after->amount/dst_nb;
+ XBT_VERB("(%d->%d): (%.2f, %.2f)-> (%.2f, %.2f)",
+ i, j, src_start, src_end, dst_start, dst_end);
+ if ((src_end <= dst_start) || (dst_end <= src_start)) {
+ after->communication_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
+ } else {
+ after->communication_amount[i*(src_nb+dst_nb)+src_nb+j] =
+ MIN(src_end, dst_end)- MAX(src_start, dst_start);
+ }
+ XBT_VERB("==> %.2f",
+ after->communication_amount[i*(src_nb+dst_nb)+src_nb+j]);
+ }
+ }
+
+ if (__SD_task_is_schedulable(after) ||
+ __SD_task_is_not_scheduled(after)) {
+ SD_task_do_schedule(after);
+ XBT_VERB
+ ("Auto-Schedule redistribution task %s. Send %.f bytes from %d hosts to %d hosts.",
+ SD_task_get_name(after),after->amount, src_nb, dst_nb);
+ }
}
}
}
