-/* Copyright (c) 2006 - 2013. The SimGrid Team.
+/* Copyright (c) 2006-2014. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* mandatory power.
*
* A parallel computation can be scheduled on any number of host.
- * The underlying speedup model is Amdahl's law.
- * To be auto-scheduled, \see SD_task_distribute_comp_amdhal has to be called
+ * The underlying speedup model is Amdahl's law.
+ * To be auto-scheduled, \see SD_task_distribute_comp_amdahl has to be called
* first.
* \param name the name of the task (can be \c NULL)
* \param data the user data you want to associate with the task (can be \c NULL)
}
/**
- * \brief Returns the alpha parameter of a SD_TASK_COMP_PAR_AMDAH task
+ * \brief Sets the total amount of work of a task
+ * For sequential typed tasks (COMP_SEQ and COMM_E2E), it also sets the
+ * appropriate values in the computation_amount and communication_amount arrays
+ * respectively. Nothing more than modifying task->amount is done for paralle
+ * typed tasks (COMP_PAR_AMDAHL and COMM_PAR_MXN_1D_BLOCK) as the distribution
+ * of the amount of work is done at scheduling time.
+ *
+ * \param task a task
+ * \param amount the new amount of work to execute
+ */
+void SD_task_set_amount(SD_task_t task, double amount)
+{
+ task->amount = amount;
+ if (task->kind == SD_TASK_COMP_SEQ)
+ task->computation_amount[0] = amount;
+ if (task->kind == SD_TASK_COMM_E2E)
+ task->communication_amount[2] = amount;
+}
+
+/**
+ * \brief Returns the alpha parameter of a SD_TASK_COMP_PAR_AMDAHL task
*
* \param task a parallel task assuming Amdahl's law as speedup model
* \return the alpha parameter (serial part of a task in percent) for this task
surf_workstations = xbt_new(void *, workstation_nb);
for (i = 0; i < workstation_nb; i++)
- surf_workstations[i] = task->workstation_list[i];
+ surf_workstations[i] = surf_workstation_resource_priv(task->workstation_list[i]);
double *computation_amount = xbt_new0(double, workstation_nb);
double *communication_amount = xbt_new0(double, workstation_nb * workstation_nb);
/** @brief Blah
*
*/
-void SD_task_distribute_comp_amdhal(SD_task_t task, int ws_count)
+void SD_task_distribute_comp_amdahl(SD_task_t task, int ws_count)
{
int i;
xbt_assert(task->kind == SD_TASK_COMP_PAR_AMDAHL,
SD_task_get_name(task));
switch (task->kind) {
case SD_TASK_COMP_PAR_AMDAHL:
- SD_task_distribute_comp_amdhal(task, count);
+ SD_task_distribute_comp_amdahl(task, count);
case SD_TASK_COMM_E2E:
case SD_TASK_COMP_SEQ:
xbt_assert(task->workstation_nb == count,
* 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",
+ " will be distributed following Amdahl's Law",
SD_task_get_name(task), task->workstation_nb,
task->computation_amount[0]);
xbt_dynar_foreach(task->tasks_before, cpt, dep) {