/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
+#include "src/surf/HostImpl.hpp"
#include "src/surf/surf_interface.hpp"
-#include "src/surf/host_interface.hpp"
#include "src/simdag/simdag_private.h"
#include "simgrid/simdag.h"
-#include "xbt/sysdep.h"
-#include "xbt/dynar.h"
#include "src/instr/instr_private.h"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_task, sd,
- "Logging specific to SimDag (task)");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_task, sd, "Logging specific to SimDag (task)");
-static void __SD_task_remove_dependencies(SD_task_t task);
-static void __SD_task_destroy_scheduling_data(SD_task_t task);
+/* Destroys the data memorized by SD_task_schedule. Task state must be SD_SCHEDULED or SD_RUNNABLE. */
+static void __SD_task_destroy_scheduling_data(SD_task_t task)
+{
+ if (task->state != SD_SCHEDULED && task->state != SD_RUNNABLE)
+ THROWF(arg_error, 0, "Task '%s' must be SD_SCHEDULED or SD_RUNNABLE", SD_task_get_name(task));
+
+ xbt_free(task->flops_amount);
+ xbt_free(task->bytes_amount);
+ task->flops_amount = nullptr;
+ task->bytes_amount = nullptr;
+}
-void* SD_task_new_f(void)
+void* SD_task_new_f()
{
SD_task_t task = xbt_new0(s_SD_task_t, 1);
- task->tasks_before = xbt_dynar_new(sizeof(SD_dependency_t), NULL);
- task->tasks_after = xbt_dynar_new(sizeof(SD_dependency_t), NULL);
+ task->inputs = new std::set<SD_task_t>();
+ task->outputs = new std::set<SD_task_t>();
+ task->predecessors = new std::set<SD_task_t>();
+ task->successors = new std::set<SD_task_t>();
return task;
}
void SD_task_recycle_f(void *t)
{
- SD_task_t task = (SD_task_t) t;
+ SD_task_t task = static_cast<SD_task_t>(t);
/* Reset the content */
task->kind = SD_TASK_NOT_TYPED;
task->state= SD_NOT_SCHEDULED;
- xbt_dynar_push(sd_global->initial_task_set,&task);
+ sd_global->initial_tasks->insert(task);
task->marked = 0;
task->start_time = -1.0;
task->finish_time = -1.0;
- task->surf_action = NULL;
+ task->surf_action = nullptr;
task->watch_points = 0;
/* dependencies */
- xbt_dynar_reset(task->tasks_before);
- xbt_dynar_reset(task->tasks_after);
- task->unsatisfied_dependencies = 0;
- task->is_not_ready = 0;
+ task->inputs->clear();
+ task->outputs->clear();
+ task->predecessors->clear();
+ task->successors->clear();
/* scheduling parameters */
task->host_count = 0;
- task->host_list = NULL;
- task->flops_amount = NULL;
- task->bytes_amount = NULL;
+ task->host_list = nullptr;
+ task->flops_amount = nullptr;
+ task->bytes_amount = nullptr;
task->rate = -1;
}
void SD_task_free_f(void *t)
{
- SD_task_t task = (SD_task_t)t;
+ SD_task_t task = static_cast<SD_task_t>(t);
+
+ delete task->inputs;
+ delete task->outputs;
+ delete task->predecessors;
+ delete task->successors;
- xbt_dynar_free(&task->tasks_before);
- xbt_dynar_free(&task->tasks_after);
xbt_free(task);
}
/**
* \brief Creates a new task.
*
- * \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)
+ * \param name the name of the task (can be \c nullptr)
+ * \param data the user data you want to associate with the task (can be \c nullptr)
* \param amount amount of the task
* \return the new task
* \see SD_task_destroy()
*/
SD_task_t SD_task_create(const char *name, void *data, double amount)
{
- SD_task_t task = (SD_task_t)xbt_mallocator_get(sd_global->task_mallocator);
+ SD_task_t task = static_cast<SD_task_t>(xbt_mallocator_get(sd_global->task_mallocator));
- /* general information */
- task->data = data; /* user data */
+ task->data = data;
task->name = xbt_strdup(name);
task->amount = amount;
task->remains = amount;
- sd_global->task_number++;
-
return task;
}
-static XBT_INLINE SD_task_t SD_task_create_sized(const char *name,
- void *data, double amount,
- int ws_count)
+static inline SD_task_t SD_task_create_sized(const char *name, void *data, double amount, int ws_count)
{
SD_task_t task = SD_task_create(name, data, amount);
task->bytes_amount = xbt_new0(double, ws_count * ws_count);
/** @brief create a end-to-end communication task that can then be auto-scheduled
*
- * Auto-scheduling mean that the task can be used with SD_task_schedulev(). This
- * allows to specify the task costs at creation, and decouple them from the
- * scheduling process where you just specify which resource should deliver the
+ * Auto-scheduling mean that the task can be used with SD_task_schedulev(). This allows to specify the task costs at
+ * creation, and decouple them from the scheduling process where you just specify which resource should deliver the
* mandatory power.
*
- * A end-to-end communication must be scheduled on 2 hosts, and the amount
- * specified at creation is sent from hosts[0] to hosts[1].
+ * A end-to-end communication must be scheduled on 2 hosts, and the amount specified at creation is sent from hosts[0]
+ * to hosts[1].
*/
-SD_task_t SD_task_create_comm_e2e(const char *name, void *data,
- double amount)
+SD_task_t SD_task_create_comm_e2e(const char *name, void *data, double amount)
{
SD_task_t res = SD_task_create_sized(name, data, amount, 2);
res->bytes_amount[2] = amount;
/** @brief create a sequential computation task that can then be auto-scheduled
*
- * Auto-scheduling mean that the task can be used with SD_task_schedulev(). This
- * allows to specify the task costs at creation, and decouple them from the
- * scheduling process where you just specify which resource should deliver the
+ * Auto-scheduling mean that the task can be used with SD_task_schedulev(). This allows to specify the task costs at
+ * creation, and decouple them from the scheduling process where you just specify which resource should deliver the
* mandatory power.
*
- * A sequential computation must be scheduled on 1 host, and the amount
- * specified at creation to be run on hosts[0].
+ * A sequential computation must be scheduled on 1 host, and the amount specified at creation to be run on hosts[0].
*
- * \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)
+ * \param name the name of the task (can be \c nullptr)
+ * \param data the user data you want to associate with the task (can be \c nullptr)
* \param flops_amount amount of compute work to be done by the task
* \return the new SD_TASK_COMP_SEQ typed task
*/
-SD_task_t SD_task_create_comp_seq(const char *name, void *data,
- double flops_amount)
+SD_task_t SD_task_create_comp_seq(const char *name, void *data, double flops_amount)
{
SD_task_t res = SD_task_create_sized(name, data, flops_amount, 1);
res->flops_amount[0] = flops_amount;
/** @brief create a parallel computation task that can then be auto-scheduled
*
- * Auto-scheduling mean that the task can be used with SD_task_schedulev(). This
- * allows to specify the task costs at creation, and decouple them from the
- * scheduling process where you just specify which resource should deliver the
+ * Auto-scheduling mean that the task can be used with SD_task_schedulev(). This allows to specify the task costs at
+ * creation, and decouple them from the scheduling process where you just specify which resource should deliver the
* 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_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)
+ * 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 nullptr)
+ * \param data the user data you want to associate with the task (can be \c nullptr)
* \param flops_amount amount of compute work to be done by the task
* \param alpha purely serial fraction of the work to be done (in [0.;1.[)
* \return the new task
*/
-SD_task_t SD_task_create_comp_par_amdahl(const char *name, void *data,
- double flops_amount, double alpha)
+SD_task_t SD_task_create_comp_par_amdahl(const char *name, void *data, double flops_amount, double alpha)
{
- xbt_assert(alpha < 1. && alpha >= 0.,
- "Invalid parameter: alpha must be in [0.;1.[");
-
+ xbt_assert(alpha < 1. && alpha >= 0., "Invalid parameter: alpha must be in [0.;1.[");
+
SD_task_t res = SD_task_create(name, data, flops_amount);
res->alpha = alpha;
res->kind = SD_TASK_COMP_PAR_AMDAHL;
return res;
}
-/** @brief create a complex data redistribution task that can then be
- * auto-scheduled
+/** @brief create a complex data redistribution task that can then be auto-scheduled
*
* Auto-scheduling mean that the task can be used with SD_task_schedulev().
- * This allows to specify the task costs at creation, and decouple them from
- * the scheduling process where you just specify which resource should
- * communicate.
+ * This allows to specify the task costs at creation, and decouple them from the scheduling process where you just
+ * specify which resource should communicate.
*
* A data redistribution can be scheduled on any number of host.
- * The assumed distribution is a 1D block distribution. Each host owns the same
- * share of the \see amount.
- * To be auto-scheduled, \see SD_task_distribute_comm_mxn_1d_block 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)
+ * The assumed distribution is a 1D block distribution. Each host owns the same share of the \see amount.
+ * To be auto-scheduled, \see SD_task_distribute_comm_mxn_1d_block has to be called first.
+ * \param name the name of the task (can be \c nullptr)
+ * \param data the user data you want to associate with the task (can be \c nullptr)
* \param amount amount of data to redistribute by the task
* \return the new task
*/
-SD_task_t SD_task_create_comm_par_mxn_1d_block(const char *name, void *data,
- double amount)
+SD_task_t SD_task_create_comm_par_mxn_1d_block(const char *name, void *data, double amount)
{
SD_task_t res = SD_task_create(name, data, amount);
- res->host_list=NULL;
+ res->host_list=nullptr;
res->kind = SD_TASK_COMM_PAR_MXN_1D_BLOCK;
return res;
*/
void SD_task_destroy(SD_task_t task)
{
- int idx;
XBT_DEBUG("Destroying task %s...", SD_task_get_name(task));
- __SD_task_remove_dependencies(task);
- /* if the task was scheduled or runnable we have to free the scheduling parameters */
- if (__SD_task_is_scheduled_or_runnable(task))
+ /* First Remove all dependencies associated with the task. */
+ while (!task->predecessors->empty())
+ SD_task_dependency_remove(*(task->predecessors->begin()), task);
+ while (!task->inputs->empty())
+ SD_task_dependency_remove(*(task->inputs->begin()), task);
+ while (!task->successors->empty())
+ SD_task_dependency_remove(task, *(task->successors->begin()));
+ while (!task->outputs->empty())
+ SD_task_dependency_remove(task, *(task->outputs->begin()));
+
+ if (task->state == SD_SCHEDULED || task->state == SD_RUNNABLE)
__SD_task_destroy_scheduling_data(task);
- idx = xbt_dynar_search_or_negative(sd_global->return_set, &task);
+ int idx = xbt_dynar_search_or_negative(sd_global->return_set, &task);
if (idx >=0) {
- xbt_dynar_remove_at(sd_global->return_set, idx, NULL);
+ xbt_dynar_remove_at(sd_global->return_set, idx, nullptr);
}
xbt_free(task->name);
- if (task->surf_action != NULL)
+ if (task->surf_action != nullptr)
task->surf_action->unref();
xbt_free(task->host_list);
xbt_free(task->flops_amount);
xbt_mallocator_release(sd_global->task_mallocator,task);
- sd_global->task_number--;
XBT_DEBUG("Task destroyed.");
}
* \brief Returns the user data of a task
*
* \param task a task
- * \return the user data associated with this task (can be \c NULL)
+ * \return the user data associated with this task (can be \c nullptr)
* \see SD_task_set_data()
*/
void *SD_task_get_data(SD_task_t task)
/**
* \brief Sets the user data of a task
*
- * The new data can be \c NULL. The old data should have been freed first
- * if it was not \c NULL.
+ * The new data can be \c nullptr. The old data should have been freed first
+ * if it was not \c nullptr.
*
* \param task a task
* \param data the new data you want to associate with this task
/**
* \brief Sets the rate of a task
*
- * This will change the network bandwidth a task can use. This rate
- * cannot be dynamically changed. Once the task has started, this call
- * is ineffective. 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.
+ * This will change the network bandwidth a task can use. This rate cannot be dynamically changed. Once the task has
+ * started, this call is ineffective. 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.
*
* To divide the nominal bandwidth by 2, the rate then has to be :
* rate = bandwidth/(2*amount)
*/
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.");
- if(task->start_time<0) {
+ xbt_assert(task->kind == SD_TASK_COMM_E2E, "The rate can be modified for end-to-end communications only.");
+ if(task->state < SD_RUNNING) {
task->rate = rate;
} else {
XBT_WARN("Task %p has started. Changing rate is ineffective.", task);
return task->state;
}
-/* Changes the state of a task. Updates the swags and the flag sd_global->watch_point_reached.
+/* Changes the state of a task. Updates the sd_global->watch_point_reached flag.
*/
void SD_task_set_state(SD_task_t task, e_SD_task_state_t new_state)
{
- int idx;
- switch (new_state) {
- case SD_NOT_SCHEDULED:
- case SD_SCHEDULABLE:
- if (SD_task_get_state(task) == SD_FAILED){
- xbt_dynar_remove_at(sd_global->completed_task_set,
- xbt_dynar_search(sd_global->completed_task_set, &task), NULL);
- xbt_dynar_push(sd_global->initial_task_set,&task);
- }
- break;
- case SD_SCHEDULED:
- if (SD_task_get_state(task) == SD_RUNNABLE){
- xbt_dynar_remove_at(sd_global->executable_task_set,
- xbt_dynar_search(sd_global->executable_task_set, &task), NULL);
- xbt_dynar_push(sd_global->initial_task_set,&task);
- }
- break;
- case SD_RUNNABLE:
- idx = xbt_dynar_search_or_negative(sd_global->initial_task_set, &task);
- if (idx >= 0) {
- xbt_dynar_remove_at(sd_global->initial_task_set, idx, NULL);
- xbt_dynar_push(sd_global->executable_task_set,&task);
+ std::set<SD_task_t>::iterator idx;
+ XBT_DEBUG("Set state of '%s' to %d", task->name, new_state);
+ if ((new_state == SD_NOT_SCHEDULED || new_state == SD_SCHEDULABLE) && task->state == SD_FAILED){
+ sd_global->completed_tasks->erase(task);
+ sd_global->initial_tasks->insert(task);
+ }
+
+ if (new_state == SD_SCHEDULED && task->state == SD_RUNNABLE){
+ sd_global->initial_tasks->insert(task);
+ sd_global->runnable_tasks->erase(task);
+ }
+
+ if (new_state == SD_RUNNABLE){
+ idx = sd_global->initial_tasks->find(task);
+ if (idx != sd_global->initial_tasks->end()) {
+ sd_global->runnable_tasks->insert(*idx);
+ sd_global->initial_tasks->erase(idx);
}
- break;
- case SD_RUNNING:
- xbt_dynar_remove_at(sd_global->executable_task_set,
- xbt_dynar_search(sd_global->executable_task_set, &task), NULL);
- break;
- case SD_DONE:
- xbt_dynar_push(sd_global->completed_task_set,&task);
- task->finish_time = task->surf_action->getFinishTime();
- task->remains = 0;
-#ifdef HAVE_JEDULE
- jedule_log_sd_event(task);
+ }
+
+ if (new_state == SD_RUNNING)
+ sd_global->runnable_tasks->erase(task);
+
+ if (new_state == SD_DONE || new_state == SD_FAILED){
+ sd_global->completed_tasks->insert(task);
+ task->start_time = task->surf_action->getStartTime();
+ if (new_state == SD_DONE){
+ task->finish_time = task->surf_action->getFinishTime();
+ task->remains = 0;
+#if HAVE_JEDULE
+ jedule_log_sd_event(task);
#endif
- break;
- case SD_FAILED:
- xbt_dynar_push(sd_global->completed_task_set,&task);
- break;
- default:
- xbt_die( "Invalid state");
+ } else
+ task->finish_time = surf_get_clock();
+ task->surf_action->unref();
+ task->surf_action = nullptr;
}
task->state = new_state;
if (task->watch_points & new_state) {
XBT_VERB("Watch point reached with task '%s'!", SD_task_get_name(task));
- sd_global->watch_point_reached = 1;
+ sd_global->watch_point_reached = true;
SD_task_unwatch(task, new_state); /* remove the watch point */
}
}
* \brief Returns the name of a task
*
* \param task a task
- * \return the name of this task (can be \c NULL)
+ * \return the name of this task (can be \c nullptr)
*/
const char *SD_task_get_name(SD_task_t task)
{
xbt_dynar_t SD_task_get_parents(SD_task_t task)
{
- unsigned int i;
- xbt_dynar_t parents;
- SD_dependency_t dep;
+ xbt_dynar_t parents = xbt_dynar_new(sizeof(SD_task_t), nullptr);
+
+ for (auto it : *task->predecessors)
+ xbt_dynar_push(parents, &it);
+ for (auto it : *task->inputs)
+ xbt_dynar_push(parents, &it);
- parents = xbt_dynar_new(sizeof(SD_task_t), NULL);
- xbt_dynar_foreach(task->tasks_before, i, dep) {
- xbt_dynar_push(parents, &(dep->src));
- }
return parents;
}
*/
xbt_dynar_t SD_task_get_children(SD_task_t task)
{
- unsigned int i;
- xbt_dynar_t children;
- SD_dependency_t dep;
+ xbt_dynar_t children = xbt_dynar_new(sizeof(SD_task_t), nullptr);
+
+ for (auto it : *task->successors)
+ xbt_dynar_push(children, &it);
+ for (auto it : *task->outputs)
+ xbt_dynar_push(children, &it);
- children = xbt_dynar_new(sizeof(SD_task_t), NULL);
- xbt_dynar_foreach(task->tasks_after, i, dep) {
- xbt_dynar_push(children, &(dep->dst));
- }
return children;
}
/**
- * \brief Returns the amount of workstations involved in a task
+ * \brief Returns the number of workstations involved in a task
*
* Only call this on already scheduled tasks!
* \param task a task
return task->amount;
}
-/**
- * \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 flops_amount and bytes_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.
+/** @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 flops_amount and
+ * bytes_amount arrays respectively. Nothing more than modifying task->amount is done for parallel 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
*/
double SD_task_get_alpha(SD_task_t task)
{
- xbt_assert(SD_task_get_kind(task) == SD_TASK_COMP_PAR_AMDAHL,
- "Alpha parameter is not defined for this kink of task");
+ xbt_assert(SD_task_get_kind(task) == SD_TASK_COMP_PAR_AMDAHL, "Alpha parameter is not defined for this kind of task");
return task->alpha;
}
-
/**
* \brief Returns the remaining amount work to do till the completion of a task
*
double SD_task_get_remaining_amount(SD_task_t task)
{
if (task->surf_action)
- return surf_action_get_remains(task->surf_action);
+ return task->surf_action->getRemains();
else
return task->remains;
}
return task->kind;
}
-/** @brief Displays debugging informations about a task */
+/** @brief Displays debugging information about a task */
void SD_task_dump(SD_task_t task)
{
- unsigned int counter;
- SD_dependency_t dependency;
- char *statename;
-
XBT_INFO("Displaying task %s", SD_task_get_name(task));
- statename = bprintf("%s%s%s%s%s%s%s",
- (task->state == SD_NOT_SCHEDULED ? " not scheduled" :
- ""),
+ char *statename = bprintf("%s%s%s%s%s%s%s",
+ (task->state == SD_NOT_SCHEDULED ? " not scheduled" : ""),
(task->state == SD_SCHEDULABLE ? " schedulable" : ""),
(task->state == SD_SCHEDULED ? " scheduled" : ""),
- (task->state == SD_RUNNABLE ? " runnable" :
- " not runnable"),
+ (task->state == SD_RUNNABLE ? " runnable" : " not runnable"),
(task->state == SD_RUNNING ? " running" : ""),
(task->state == SD_DONE ? " done" : ""),
(task->state == SD_FAILED ? " failed" : ""));
}
}
- if (task->category)
- XBT_INFO(" - tracing category: %s", task->category);
-
XBT_INFO(" - amount: %.0f", SD_task_get_amount(task));
if (task->kind == SD_TASK_COMP_PAR_AMDAHL)
XBT_INFO(" - alpha: %.2f", task->alpha);
- XBT_INFO(" - Dependencies to satisfy: %d", task->unsatisfied_dependencies);
- if (!xbt_dynar_is_empty(task->tasks_before)) {
+ XBT_INFO(" - Dependencies to satisfy: %zu", task->inputs->size()+ task->predecessors->size());
+ if ((task->inputs->size()+ task->predecessors->size()) > 0) {
XBT_INFO(" - pre-dependencies:");
- xbt_dynar_foreach(task->tasks_before, counter, dependency) {
- XBT_INFO(" %s", SD_task_get_name(dependency->src));
- }
+ for (auto it : *task->predecessors)
+ XBT_INFO(" %s", SD_task_get_name(it));
+
+ for (auto it: *task->inputs)
+ XBT_INFO(" %s", SD_task_get_name(it));
}
- if (!xbt_dynar_is_empty(task->tasks_after)) {
+ if ((task->outputs->size() + task->successors->size()) > 0) {
XBT_INFO(" - post-dependencies:");
- xbt_dynar_foreach(task->tasks_after, counter, dependency) {
- XBT_INFO(" %s", SD_task_get_name(dependency->dst));
- }
+
+ for (auto it : *task->successors)
+ XBT_INFO(" %s", SD_task_get_name(it));
+ for (auto it : *task->outputs)
+ XBT_INFO(" %s", SD_task_get_name(it));
}
}
/** @brief Dumps the task in dotty formalism into the FILE* passed as second argument */
void SD_task_dotty(SD_task_t task, void *out)
{
- unsigned int counter;
- SD_dependency_t dependency;
- FILE *fout = (FILE*)out;
+ FILE *fout = static_cast<FILE*>(out);
fprintf(fout, " T%p [label=\"%.20s\"", task, task->name);
switch (task->kind) {
case SD_TASK_COMM_E2E:
xbt_die("Unknown task type!");
}
fprintf(fout, "];\n");
- xbt_dynar_foreach(task->tasks_before, counter, dependency) {
- fprintf(fout, " T%p -> T%p;\n", dependency->src, dependency->dst);
- }
-}
-
-/* Destroys a dependency between two tasks.
- */
-static void __SD_task_dependency_destroy(void *dependency)
-{
- xbt_free(((SD_dependency_t)dependency)->name);
- xbt_free(dependency);
+ for (auto it : *task->predecessors)
+ fprintf(fout, " T%p -> T%p;\n", it, task);
+ for (auto it : *task->inputs)
+ fprintf(fout, " T%p -> T%p;\n", it, task);
}
/**
* \a dst will depend on \a src, ie \a dst will not start before \a src is finished.
* Their \ref e_SD_task_state_t "state" must be #SD_NOT_SCHEDULED, #SD_SCHEDULED or #SD_RUNNABLE.
*
- * \param name the name of the new dependency (can be \c NULL)
- * \param data the user data you want to associate with this dependency (can be \c NULL)
+ * \param name the name of the new dependency (can be \c nullptr)
+ * \param data the user data you want to associate with this dependency (can be \c nullptr)
* \param src the task which must be executed first
* \param dst the task you want to make depend on \a src
* \see SD_task_dependency_remove()
*/
-void SD_task_dependency_add(const char *name, void *data, SD_task_t src,
- SD_task_t dst)
+void SD_task_dependency_add(const char *name, void *data, SD_task_t src, SD_task_t dst)
{
- xbt_dynar_t dynar;
- unsigned long length;
- int found = 0;
- unsigned long i;
- SD_dependency_t dependency;
- e_SD_task_state_t state;
-
- dynar = src->tasks_after;
- length = xbt_dynar_length(dynar);
-
if (src == dst)
- THROWF(arg_error, 0,
- "Cannot add a dependency between task '%s' and itself",
- SD_task_get_name(src));
-
- state = SD_task_get_state(src);
- if (state != SD_NOT_SCHEDULED && state != SD_SCHEDULABLE &&
- state != SD_RUNNING && !__SD_task_is_scheduled_or_runnable(src))
- THROWF(arg_error, 0,
- "Task '%s' must be SD_NOT_SCHEDULED, SD_SCHEDULABLE, SD_SCHEDULED,"
- " SD_RUNNABLE or SD_RUNNING", SD_task_get_name(src));
-
- state = SD_task_get_state(dst);
- if (state != SD_NOT_SCHEDULED && state != SD_SCHEDULABLE &&
- !__SD_task_is_scheduled_or_runnable(dst))
- THROWF(arg_error, 0,
- "Task '%s' must be SD_NOT_SCHEDULED, SD_SCHEDULABLE, SD_SCHEDULED,"
- "or SD_RUNNABLE", SD_task_get_name(dst));
-
- XBT_DEBUG("SD_task_dependency_add: src = %s, dst = %s",
- SD_task_get_name(src), SD_task_get_name(dst));
- for (i = 0; i < length && !found; i++) {
- xbt_dynar_get_cpy(dynar, i, &dependency);
- found = (dependency->dst == dst);
- XBT_DEBUG("Dependency %lu: dependency->dst = %s", i,
- SD_task_get_name(dependency->dst));
- }
+ THROWF(arg_error, 0, "Cannot add a dependency between task '%s' and itself", SD_task_get_name(src));
- if (found)
- THROWF(arg_error, 0,
- "A dependency already exists between task '%s' and task '%s'",
- SD_task_get_name(src), SD_task_get_name(dst));
+ if (src->state == SD_DONE || src->state == SD_FAILED)
+ THROWF(arg_error, 0, "Task '%s' must be SD_NOT_SCHEDULED, SD_SCHEDULABLE, SD_SCHEDULED, SD_RUNNABLE, or SD_RUNNING",
+ src->name);
- dependency = xbt_new(s_SD_dependency_t, 1);
+ if (dst->state == SD_DONE || dst->state == SD_FAILED || dst->state == SD_RUNNING)
+ THROWF(arg_error, 0, "Task '%s' must be SD_NOT_SCHEDULED, SD_SCHEDULABLE, SD_SCHEDULED, or SD_RUNNABLE",
+ dst->name);
- dependency->name = xbt_strdup(name); /* xbt_strdup is cleaver enough to deal with NULL args itself */
- dependency->data = data;
- dependency->src = src;
- dependency->dst = dst;
+ if (dst->inputs->find(src) != dst->inputs->end() || src->outputs->find(dst) != src->outputs->end() ||
+ src->successors->find(dst) != src->successors->end() || dst->predecessors->find(src) != dst->predecessors->end())
+ THROWF(arg_error, 0, "A dependency already exists between task '%s' and task '%s'", src->name, dst->name);
- /* src must be executed before dst */
- xbt_dynar_push(src->tasks_after, &dependency);
- xbt_dynar_push(dst->tasks_before, &dependency);
+ XBT_DEBUG("SD_task_dependency_add: src = %s, dst = %s", src->name, dst->name);
- dst->unsatisfied_dependencies++;
- dst->is_not_ready++;
-
- /* if the task was runnable, then dst->tasks_before is not empty anymore,
- so we must go back to state SD_SCHEDULED */
- if (SD_task_get_state(dst) == SD_RUNNABLE) {
- XBT_DEBUG
- ("SD_task_dependency_add: %s was runnable and becomes scheduled!",
- SD_task_get_name(dst));
- SD_task_set_state(dst, SD_SCHEDULED);
+ if (src->kind == SD_TASK_COMM_E2E || src->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK){
+ if (dst->kind == SD_TASK_COMP_SEQ || dst->kind == SD_TASK_COMP_PAR_AMDAHL)
+ dst->inputs->insert(src);
+ else
+ dst->predecessors->insert(src);
+ src->successors->insert(dst);
+ } else {
+ if (dst->kind == SD_TASK_COMM_E2E|| dst->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK)
+ src->outputs->insert(dst);
+ else
+ src->successors->insert(dst);
+ dst->predecessors->insert(src);
}
-}
-/**
- * \brief Returns the name given as input when dependency has been created..
- *
- * \param src a task
- * \param dst a task depending on \a src
- *
- */
-const char *SD_task_dependency_get_name(SD_task_t src, SD_task_t dst){
- unsigned int i;
- SD_dependency_t dependency;
- xbt_dynar_foreach(src->tasks_after, i, dependency){
- if (dependency->dst == dst)
- return dependency->name;
+ /* if the task was runnable, the task goes back to SD_SCHEDULED because of the new dependency*/
+ if (dst->state == SD_RUNNABLE) {
+ XBT_DEBUG("SD_task_dependency_add: %s was runnable and becomes scheduled!", dst->name);
+ SD_task_set_state(dst, SD_SCHEDULED);
}
- return NULL;
}
/**
* \param src a task
* \param dst a task depending on \a src
*
- * If src is NULL, checks whether dst has any pre-dependency.
- * If dst is NULL, checks whether src has any post-dependency.
+ * If src is nullptr, checks whether dst has any pre-dependency.
+ * If dst is nullptr, checks whether src has any post-dependency.
*/
int SD_task_dependency_exists(SD_task_t src, SD_task_t dst)
{
- unsigned int counter;
- SD_dependency_t dependency;
-
- xbt_assert(src != NULL
- || dst != NULL,
- "Invalid parameter: both src and dst are NULL");
+ xbt_assert(src != nullptr || dst != nullptr, "Invalid parameter: both src and dst are nullptr");
if (src) {
if (dst) {
- xbt_dynar_foreach(src->tasks_after, counter, dependency) {
- if (dependency->dst == dst)
- return 1;
- }
+ return (src->successors->find(dst) != src->successors->end() || src->outputs->find(dst) != src->outputs->end());
} else {
- return xbt_dynar_length(src->tasks_after);
+ return src->successors->size() + src->outputs->size();
}
} else {
- return xbt_dynar_length(dst->tasks_before);
+ return dst->predecessors->size() + dst->inputs->size();
}
return 0;
}
*/
void SD_task_dependency_remove(SD_task_t src, SD_task_t dst)
{
+ XBT_DEBUG("SD_task_dependency_remove: src = %s, dst = %s", SD_task_get_name(src), SD_task_get_name(dst));
- xbt_dynar_t dynar;
- unsigned long length;
- int found = 0;
- unsigned long i;
- SD_dependency_t dependency;
-
- /* remove the dependency from src->tasks_after */
- dynar = src->tasks_after;
- length = xbt_dynar_length(dynar);
-
- for (i = 0; i < length && !found; i++) {
- xbt_dynar_get_cpy(dynar, i, &dependency);
- if (dependency->dst == dst) {
- xbt_dynar_remove_at(dynar, i, NULL);
- found = 1;
- }
- }
- if (!found)
- THROWF(arg_error, 0,
- "No dependency found between task '%s' and '%s': task '%s' is not a successor of task '%s'",
- SD_task_get_name(src), SD_task_get_name(dst),
- SD_task_get_name(dst), SD_task_get_name(src));
-
- /* remove the dependency from dst->tasks_before */
- dynar = dst->tasks_before;
- length = xbt_dynar_length(dynar);
- found = 0;
-
- for (i = 0; i < length && !found; i++) {
- xbt_dynar_get_cpy(dynar, i, &dependency);
- if (dependency->src == src) {
- xbt_dynar_remove_at(dynar, i, NULL);
- __SD_task_dependency_destroy(dependency);
- dst->unsatisfied_dependencies--;
- dst->is_not_ready--;
- found = 1;
- }
- }
- /* should never happen... */
- xbt_assert(found,
- "SimDag error: task '%s' is a successor of '%s' but task '%s' is not a predecessor of task '%s'",
- SD_task_get_name(dst), SD_task_get_name(src),
- SD_task_get_name(src), SD_task_get_name(dst));
+ if (src->successors->find(dst) == src->successors->end() && src->outputs->find(dst) == src->outputs->end())
+ THROWF(arg_error, 0, "No dependency found between task '%s' and '%s': task '%s' is not a successor of task '%s'",
+ src->name, dst->name, dst->name, src->name);
- /* if the task was scheduled and dst->tasks_before is empty now, we can make it runnable */
-
- if (dst->unsatisfied_dependencies == 0) {
- if (SD_task_get_state(dst) == SD_SCHEDULED)
- SD_task_set_state(dst, SD_RUNNABLE);
+ if (src->kind == SD_TASK_COMM_E2E || src->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK){
+ if (dst->kind == SD_TASK_COMP_SEQ || dst->kind == SD_TASK_COMP_PAR_AMDAHL)
+ dst->inputs->erase(src);
+ else
+ dst->predecessors->erase(src);
+ src->successors->erase(dst);
+ } else {
+ if (dst->kind == SD_TASK_COMM_E2E|| dst->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK)
+ src->outputs->erase(dst);
else
- SD_task_set_state(dst, SD_SCHEDULABLE);
+ src->successors->erase(dst);
+ dst->predecessors->erase(src);
}
- if (dst->is_not_ready == 0)
- SD_task_set_state(dst, SD_SCHEDULABLE);
-
- /* __SD_print_dependencies(src);
- __SD_print_dependencies(dst); */
-}
-
-/**
- * \brief Returns the user data associated with a dependency between two tasks
- *
- * \param src a task
- * \param dst a task depending on \a src
- * \return the user data associated with this dependency (can be \c NULL)
- * \see SD_task_dependency_add()
- */
-void *SD_task_dependency_get_data(SD_task_t src, SD_task_t dst)
-{
-
- xbt_dynar_t dynar;
- unsigned long length;
- int found = 0;
- unsigned long i;
- SD_dependency_t dependency;
-
- dynar = src->tasks_after;
- length = xbt_dynar_length(dynar);
-
- for (i = 0; i < length && !found; i++) {
- xbt_dynar_get_cpy(dynar, i, &dependency);
- found = (dependency->dst == dst);
- }
- if (!found)
- THROWF(arg_error, 0, "No dependency found between task '%s' and '%s'",
- SD_task_get_name(src), SD_task_get_name(dst));
- return dependency->data;
+ /* if the task was scheduled and dependencies are satisfied, we can make it runnable */
+ if (dst->predecessors->empty() && dst->inputs->empty() && dst->state == SD_SCHEDULED)
+ SD_task_set_state(dst, SD_RUNNABLE);
}
/**
* \brief Adds a watch point to a task
*
- * SD_simulate() will stop as soon as the \ref e_SD_task_state_t "state" of this
- * task becomes the one given in argument. The
- * watch point is then automatically removed.
+ * SD_simulate() will stop as soon as the \ref e_SD_task_state_t "state" of this task becomes the one given in argument.
+ * The watch point is then automatically removed.
*
* \param task a task
- * \param state the \ref e_SD_task_state_t "state" you want to watch
- * (cannot be #SD_NOT_SCHEDULED)
+ * \param state the \ref e_SD_task_state_t "state" you want to watch (cannot be #SD_NOT_SCHEDULED)
* \see SD_task_unwatch()
*/
void SD_task_watch(SD_task_t task, e_SD_task_state_t state)
{
if (state & SD_NOT_SCHEDULED)
- THROWF(arg_error, 0,
- "Cannot add a watch point for state SD_NOT_SCHEDULED");
+ THROWF(arg_error, 0, "Cannot add a watch point for state SD_NOT_SCHEDULED");
task->watch_points = task->watch_points | state;
}
*/
void SD_task_unwatch(SD_task_t task, e_SD_task_state_t state)
{
- xbt_assert(state != SD_NOT_SCHEDULED,
- "SimDag error: Cannot have a watch point for state SD_NOT_SCHEDULED");
-
+ xbt_assert(state != SD_NOT_SCHEDULED, "SimDag error: Cannot have a watch point for state SD_NOT_SCHEDULED");
task->watch_points = task->watch_points & ~state;
}
/**
* \brief Returns an approximative estimation of the execution time of a task.
*
- * The estimation is very approximative because the value returned is the time
- * the task would take if it was executed now and if it was the only task.
+ * The estimation is very approximative because the value returned is the time the task would take if it was executed
+ * now and if it was the only task.
*
* \param task the task to evaluate
- * \param workstation_nb number of workstations on which the task would be executed
- * \param workstation_list the workstations on which the task would be executed
- * \param flops_amount computation amount for each workstation
- * \param bytes_amount communication amount between each pair of workstations
+ * \param host_count number of hosts on which the task would be executed
+ * \param host_list the hosts on which the task would be executed
+ * \param flops_amount computation amount for each host(i.e., an array of host_count doubles)
+ * \param bytes_amount communication amount between each pair of hosts (i.e., a matrix of host_count*host_count doubles)
* \see SD_schedule()
*/
-double SD_task_get_execution_time(SD_task_t task,
- int workstation_nb,
- const sg_host_t *
- workstation_list,
- const double *flops_amount,
- const double *bytes_amount)
+double SD_task_get_execution_time(SD_task_t task, int host_count, const sg_host_t *host_list,
+ const double *flops_amount, const double *bytes_amount)
{
- double time, max_time = 0.0;
- int i, j;
- xbt_assert(workstation_nb > 0, "Invalid parameter");
+ xbt_assert(host_count > 0, "Invalid parameter");
+ double max_time = 0.0;
/* the task execution time is the maximum execution time of the parallel tasks */
-
- for (i = 0; i < workstation_nb; i++) {
- time = 0.0;
- if (flops_amount != NULL)
- time =
- sg_host_computation_time(workstation_list[i],
- flops_amount[i]);
-
- if (bytes_amount != NULL)
- for (j = 0; j < workstation_nb; j++) {
- time +=
- SD_route_get_communication_time(workstation_list[i],
- workstation_list[j],
- bytes_amount[i *
- workstation_nb
- + j]);
- }
-
- if (time > max_time) {
+ for (int i = 0; i < host_count; i++) {
+ double time = 0.0;
+ if (flops_amount != nullptr)
+ time = flops_amount[i] / host_list[i]->speed();
+
+ if (bytes_amount != nullptr)
+ for (int j = 0; j < host_count; j++)
+ if (bytes_amount[i * host_count + j] != 0)
+ time += (SD_route_get_latency(host_list[i], host_list[j]) +
+ bytes_amount[i * host_count + j] / SD_route_get_bandwidth(host_list[i], host_list[j]));
+
+ if (time > max_time)
max_time = time;
- }
}
return max_time;
}
-static XBT_INLINE void SD_task_do_schedule(SD_task_t task)
+static inline void SD_task_do_schedule(SD_task_t task)
{
if (SD_task_get_state(task) > SD_SCHEDULABLE)
- THROWF(arg_error, 0, "Task '%s' has already been scheduled",
- SD_task_get_name(task));
+ THROWF(arg_error, 0, "Task '%s' has already been scheduled", SD_task_get_name(task));
- /* update the task state */
- if (task->unsatisfied_dependencies == 0)
+ if (task->predecessors->empty() && task->inputs->empty())
SD_task_set_state(task, SD_RUNNABLE);
else
SD_task_set_state(task, SD_SCHEDULED);
* \brief Schedules a task
*
* The task state must be #SD_NOT_SCHEDULED.
- * Once scheduled, a task will be executed as soon as possible in SD_simulate(),
- * i.e. when its dependencies are satisfied.
+ * Once scheduled, a task is executed as soon as possible in \see SD_simulate, i.e. when its dependencies are satisfied.
*
* \param task the task you want to schedule
- * \param workstation_count number of workstations on which the task will be executed
- * \param workstation_list the workstations on which the task will be executed
- * \param flops_amount computation amount for each workstation
- * \param bytes_amount communication amount between each pair of workstations
+ * \param host_count number of hosts on which the task will be executed
+ * \param workstation_list the hosts on which the task will be executed
+ * \param flops_amount computation amount for each hosts (i.e., an array of host_count doubles)
+ * \param bytes_amount communication amount between each pair of hosts (i.e., a matrix of host_count*host_count doubles)
* \param rate task execution speed rate
* \see SD_task_unschedule()
*/
-void SD_task_schedule(SD_task_t task, int workstation_count,
- const sg_host_t * workstation_list,
- const double *flops_amount,
- const double *bytes_amount, double rate)
+void SD_task_schedule(SD_task_t task, int host_count, const sg_host_t * host_list,
+ const double *flops_amount, const double *bytes_amount, double rate)
{
- xbt_assert(workstation_count > 0, "workstation_nb must be positive");
+ xbt_assert(host_count > 0, "workstation_nb must be positive");
- task->host_count = workstation_count;
+ task->host_count = host_count;
task->rate = rate;
if (flops_amount) {
- task->flops_amount = (double*)xbt_realloc(task->flops_amount,
- sizeof(double) * workstation_count);
- memcpy(task->flops_amount, flops_amount,
- sizeof(double) * workstation_count);
+ task->flops_amount = static_cast<double*>(xbt_realloc(task->flops_amount, sizeof(double) * host_count));
+ memcpy(task->flops_amount, flops_amount, sizeof(double) * host_count);
} else {
xbt_free(task->flops_amount);
- task->flops_amount = NULL;
+ task->flops_amount = nullptr;
}
- int communication_nb = workstation_count * workstation_count;
+ int communication_nb = host_count * host_count;
if (bytes_amount) {
- task->bytes_amount = (double*)xbt_realloc(task->bytes_amount,
- sizeof(double) * communication_nb);
- memcpy(task->bytes_amount, bytes_amount,
- sizeof(double) * communication_nb);
+ task->bytes_amount = static_cast<double*>(xbt_realloc(task->bytes_amount, sizeof(double) * communication_nb));
+ memcpy(task->bytes_amount, bytes_amount, sizeof(double) * communication_nb);
} else {
xbt_free(task->bytes_amount);
- task->bytes_amount = NULL;
+ task->bytes_amount = nullptr;
}
- task->host_list = (sg_host_t*)
- xbt_realloc(task->host_list,
- sizeof(sg_host_t) * workstation_count);
- memcpy(task->host_list, workstation_list,
- sizeof(sg_host_t) * workstation_count);
+ task->host_list = static_cast<sg_host_t*>(xbt_realloc(task->host_list, sizeof(sg_host_t) * host_count));
+ memcpy(task->host_list, host_list, sizeof(sg_host_t) * host_count);
SD_task_do_schedule(task);
}
*/
void SD_task_unschedule(SD_task_t task)
{
- if (task->state != SD_SCHEDULED &&
- task->state != SD_RUNNABLE &&
- task->state != SD_RUNNING &&
- task->state != SD_FAILED)
- THROWF(arg_error, 0,
- "Task %s: the state must be SD_SCHEDULED, SD_RUNNABLE, SD_RUNNING or SD_FAILED",
- SD_task_get_name(task));
-
- if (__SD_task_is_scheduled_or_runnable(task) /* if the task is scheduled or runnable */
- && ((task->kind == SD_TASK_COMP_PAR_AMDAHL) ||
- (task->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK))) { /* Don't free scheduling data for typed tasks */
+ if (task->state == SD_NOT_SCHEDULED || task->state == SD_SCHEDULABLE)
+ THROWF(arg_error, 0, "Task %s: the state must be SD_SCHEDULED, SD_RUNNABLE, SD_RUNNING or SD_FAILED", task->name);
+
+ if ((task->state == SD_SCHEDULED || task->state == SD_RUNNABLE) /* if the task is scheduled or runnable */
+ && ((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);
xbt_free(task->host_list);
- task->host_list=NULL;
+ task->host_list=nullptr;
task->host_count = 0;
}
/* the task should become SD_FAILED */
task->surf_action->cancel();
else {
- if (task->unsatisfied_dependencies == 0)
+ if (task->predecessors->empty() && task->inputs->empty())
SD_task_set_state(task, SD_SCHEDULABLE);
else
SD_task_set_state(task, SD_NOT_SCHEDULED);
task->start_time = -1.0;
}
-/* Destroys the data memorized by SD_task_schedule.
- * Task state must be SD_SCHEDULED or SD_RUNNABLE.
- */
-static void __SD_task_destroy_scheduling_data(SD_task_t task)
-{
- if (!__SD_task_is_scheduled_or_runnable(task))
- THROWF(arg_error, 0,
- "Task '%s' must be SD_SCHEDULED or SD_RUNNABLE",
- SD_task_get_name(task));
-
- xbt_free(task->flops_amount);
- xbt_free(task->bytes_amount);
- task->flops_amount = task->bytes_amount = NULL;
-}
-
-/* Runs a task. This function is directly called by __SD_task_try_to_run if
- * the task doesn't have to wait in FIFOs. Otherwise, it is called by
- * __SD_task_just_done when the task gets out of its FIFOs.
- */
+/* Runs a task. */
void SD_task_run(SD_task_t task)
{
+ xbt_assert(task->state == SD_RUNNABLE, "Task '%s' is not runnable! Task state: %d", task->name, (int) task->state);
+ xbt_assert(task->host_list != nullptr, "Task '%s': workstation_list is nullptr!", task->name);
- int i;
- sg_host_t *hosts;
-
- xbt_assert(SD_task_get_state(task) == SD_RUNNABLE,
- "Task '%s' is not runnable! Task state: %d",
- SD_task_get_name(task), (int)SD_task_get_state(task));
- xbt_assert(task->host_list != NULL,
- "Task '%s': workstation_list is NULL!",
- SD_task_get_name(task));
-
- XBT_DEBUG("Running task '%s'", SD_task_get_name(task));
+ XBT_VERB("Executing task '%s'", task->name);
/* Copy the elements of the task into the action */
int host_nb = task->host_count;
- hosts = xbt_new(sg_host_t, host_nb);
+ sg_host_t *hosts = xbt_new(sg_host_t, host_nb);
- for (i = 0; i < host_nb; i++)
+ for (int i = 0; i < host_nb; i++)
hosts[i] = task->host_list[i];
double *flops_amount = xbt_new0(double, host_nb);
if(task->flops_amount)
memcpy(flops_amount, task->flops_amount, sizeof(double) * host_nb);
if(task->bytes_amount)
- memcpy(bytes_amount, task->bytes_amount,
- sizeof(double) * host_nb * host_nb);
+ memcpy(bytes_amount, task->bytes_amount, sizeof(double) * host_nb * host_nb);
- task->surf_action = surf_host_model->executeParallelTask(
- host_nb, hosts, flops_amount, bytes_amount, task->rate);
+ task->surf_action = surf_host_model->executeParallelTask(host_nb, hosts, flops_amount, bytes_amount, task->rate);
task->surf_action->setData(task);
XBT_DEBUG("surf_action = %p", task->surf_action);
- if (task->category)
- TRACE_surf_action(task->surf_action, task->category);
-
__SD_task_destroy_scheduling_data(task); /* now the scheduling data are not useful anymore */
SD_task_set_state(task, SD_RUNNING);
- xbt_assert(SD_task_get_state(task) == SD_RUNNING,
- "Bad state of task '%s': %d",
- SD_task_get_name(task), (int)SD_task_get_state(task));
-
-}
-
-/*
- * Remove all dependencies associated with a task. This function is called
- * when the task is destroyed.
- */
-static void __SD_task_remove_dependencies(SD_task_t task)
-{
- /* we must destroy the dependencies carefuly (with SD_dependency_remove)
- because each one is stored twice */
- SD_dependency_t dependency;
- while (!xbt_dynar_is_empty(task->tasks_before)) {
- xbt_dynar_get_cpy(task->tasks_before, 0, &dependency);
- SD_task_dependency_remove(dependency->src, dependency->dst);
- }
-
- while (!xbt_dynar_is_empty(task->tasks_after)) {
- xbt_dynar_get_cpy(task->tasks_after, 0, &dependency);
- SD_task_dependency_remove(dependency->src, dependency->dst);
- }
+ xbt_dynar_push(sd_global->return_set, &task);
}
/**
* \brief Returns the finish time of a task
*
* The task state must be SD_RUNNING, SD_DONE or SD_FAILED.
- * If the state is not completed yet, the returned value is an
- * estimation of the task finish time. This value can fluctuate
- * until the task is completed.
+ * If the state is not completed yet, the returned value is an estimation of the task finish time. This value can
+ * vary until the task is completed.
*
* \param task: a task
* \return the start time of this task
else
return task->finish_time;
}
-/** @brief Blah
- *
- */
+
void SD_task_distribute_comp_amdahl(SD_task_t task, int ws_count)
{
- int i;
- xbt_assert(task->kind == SD_TASK_COMP_PAR_AMDAHL,
- "Task %s is not a SD_TASK_COMP_PAR_AMDAHL typed task."
- "Cannot use this function.",
- SD_task_get_name(task));
+ xbt_assert(task->kind == SD_TASK_COMP_PAR_AMDAHL, "Task %s is not a SD_TASK_COMP_PAR_AMDAHL typed task."
+ "Cannot use this function.", task->name);
task->flops_amount = xbt_new0(double, ws_count);
task->bytes_amount = xbt_new0(double, ws_count * ws_count);
xbt_free(task->host_list);
task->host_count = ws_count;
task->host_list = xbt_new0(sg_host_t, ws_count);
-
- for(i=0;i<ws_count;i++){
- task->flops_amount[i] =
- (task->alpha + (1 - task->alpha)/ws_count) * task->amount;
- }
-}
+ for (int i=0; i<ws_count; i++){
+ task->flops_amount[i] = (task->alpha + (1 - task->alpha)/ws_count) * task->amount;
+ }
+}
/** @brief Auto-schedules a task.
*
- * Auto-scheduling mean that the task can be used with SD_task_schedulev(). This
- * allows to specify the task costs at creation, and decouple them from the
- * scheduling process where you just specify which resource should deliver the
+ * Auto-scheduling mean that the task can be used with SD_task_schedulev(). This allows to specify the task costs at
+ * creation, and decouple them from the scheduling process where you just specify which resource should deliver the
* mandatory power.
*
- * To be auto-schedulable, a task must be created with SD_task_create_comm_e2e()
- * or SD_task_create_comp_seq(). Check their definitions for the exact semantic
- * of each of them.
+ * To be auto-schedulable, a task must be type and created with one of the specialized creation functions.
*
* @todo
* We should create tasks kind for the following categories:
* - Point to point communication (done)
* - Sequential computation (done)
* - group communication (redistribution, several kinds)
- * - parallel tasks with no internal communication (one kind per speedup
- * model such as Amdahl)
- * - idem+ internal communication. Task type not enough since we cannot store
- * comm cost alongside to comp one)
+ * - parallel tasks with no internal communication (one kind per speedup model such as Amdahl)
+ * - idem+ internal communication. Task type not enough since we cannot store comm cost alongside to comp one)
*/
-void SD_task_schedulev(SD_task_t task, int count,
- const sg_host_t * list)
+void SD_task_schedulev(SD_task_t task, int count, const sg_host_t * list)
{
- int i, j;
- SD_dependency_t dep;
- unsigned int cpt;
- xbt_assert(task->kind != 0,
- "Task %s is not typed. Cannot automatically schedule it.",
- SD_task_get_name(task));
+ xbt_assert(task->kind != 0, "Task %s is not typed. Cannot automatically schedule it.", SD_task_get_name(task));
switch (task->kind) {
case SD_TASK_COMP_PAR_AMDAHL:
SD_task_distribute_comp_amdahl(task, count);
+ /* no break */
case SD_TASK_COMM_E2E:
case SD_TASK_COMP_SEQ:
- xbt_assert(task->host_count == count,
- "Got %d locations, but were expecting %d locations",
- count,task->host_count);
- for (i = 0; i < count; i++)
+ xbt_assert(task->host_count == count, "Got %d locations, but were expecting %d locations", count,task->host_count);
+ for (int i=0; i<count; i++)
task->host_list[i] = list[i];
if (SD_task_get_kind(task)== SD_TASK_COMP_SEQ && !task->flops_amount){
/*This task has failed and is rescheduled. Reset the flops_amount*/
SD_task_do_schedule(task);
break;
default:
- xbt_die("Kind of task %s not supported by SD_task_schedulev()",
- SD_task_get_name(task));
+ xbt_die("Kind of task %s not supported by SD_task_schedulev()", SD_task_get_name(task));
}
- if (task->kind == SD_TASK_COMM_E2E) {
- XBT_VERB("Schedule comm task %s between %s -> %s. It costs %.f bytes",
- SD_task_get_name(task),
- sg_host_get_name(task->host_list[0]),
- sg_host_get_name(task->host_list[1]),
- task->bytes_amount[2]);
+ if (task->kind == SD_TASK_COMM_E2E) {
+ XBT_VERB("Schedule comm task %s between %s -> %s. It costs %.f bytes", SD_task_get_name(task),
+ sg_host_get_name(task->host_list[0]), sg_host_get_name(task->host_list[1]), task->bytes_amount[2]);
}
- /* Iterate over all children and parents being COMM_E2E to say where I am
- * located (and start them if runnable) */
+ /* Iterate over all inputs and outputs to say where I am located (and start them if runnable) */
if (task->kind == SD_TASK_COMP_SEQ) {
- XBT_VERB("Schedule computation task %s on %s. It costs %.f flops",
- SD_task_get_name(task),
- sg_host_get_name(task->host_list[0]),
- task->flops_amount[0]);
-
- xbt_dynar_foreach(task->tasks_before, cpt, dep) {
- SD_task_t before = dep->src;
- if (before->kind == SD_TASK_COMM_E2E) {
- before->host_list[1] = task->host_list[0];
-
- if (before->host_list[0] &&
- (SD_task_get_state(before)< SD_SCHEDULED)) {
- SD_task_do_schedule(before);
- XBT_VERB
- ("Auto-Schedule comm task %s between %s -> %s. It costs %.f bytes",
- SD_task_get_name(before),
- sg_host_get_name(before->host_list[0]),
- sg_host_get_name(before->host_list[1]),
- before->bytes_amount[2]);
- }
+ XBT_VERB("Schedule computation task %s on %s. It costs %.f flops", SD_task_get_name(task),
+ sg_host_get_name(task->host_list[0]), task->flops_amount[0]);
+
+ for (auto input : *task->inputs){
+ input->host_list[1] = task->host_list[0];
+ if (input->host_list[0] && (SD_task_get_state(input) < SD_SCHEDULED)) {
+ SD_task_do_schedule(input);
+ XBT_VERB ("Auto-Schedule comm task %s between %s -> %s. It costs %.f bytes", SD_task_get_name(input),
+ sg_host_get_name(input->host_list[0]), sg_host_get_name(input->host_list[1]), input->bytes_amount[2]);
}
}
- xbt_dynar_foreach(task->tasks_after, cpt, dep) {
- SD_task_t after = dep->dst;
- if (after->kind == SD_TASK_COMM_E2E) {
- after->host_list[0] = task->host_list[0];
- if (after->host_list[1]
- && (SD_task_get_state(after)< SD_SCHEDULED)) {
- SD_task_do_schedule(after);
- XBT_VERB
- ("Auto-Schedule comm task %s between %s -> %s. It costs %.f bytes",
- SD_task_get_name(after),
- sg_host_get_name(after->host_list[0]),
- sg_host_get_name(after->host_list[1]),
- after->bytes_amount[2]);
- }
+ for (auto output : *task->outputs){
+ output->host_list[0] = task->host_list[0];
+ if (output->host_list[1] && (SD_task_get_state(output) < SD_SCHEDULED)) {
+ SD_task_do_schedule(output);
+ XBT_VERB ("Auto-Schedule comm task %s between %s -> %s. It costs %.f bytes", SD_task_get_name(output),
+ sg_host_get_name(output->host_list[0]), sg_host_get_name(output->host_list[1]),
+ output->bytes_amount[2]);
}
}
}
- /* Iterate over all children and parents being MXN_1D_BLOCK to say where I am
- * located (and start them if runnable) */
+
+ /* Iterate over all children and parents being MXN_1D_BLOCK 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's Law",
- SD_task_get_name(task), task->host_count,
- task->flops_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->host_list){
- XBT_VERB("Sender side of Task %s is not scheduled yet",
- SD_task_get_name(before));
- before->host_list = xbt_new0(sg_host_t, count);
- before->host_count = count;
- XBT_VERB("Fill the workstation list with list of Task '%s'",
- SD_task_get_name(task));
- for (i=0;i<count;i++)
- before->host_list[i] = task->host_list[i];
- } else {
- XBT_VERB("Build communication matrix for task '%s'",
- SD_task_get_name(before));
- int src_nb, dst_nb;
- double src_start, src_end, dst_start, dst_end;
- src_nb = before->host_count;
- dst_nb = count;
- before->host_list = (sg_host_t*) xbt_realloc(
- before->host_list,
- (before->host_count+count)*sizeof(sg_host_t));
- for(i=0; i<count; i++)
- before->host_list[before->host_count+i] =
- task->host_list[i];
-
- before->host_count += count;
- xbt_free(before->flops_amount);
- xbt_free(before->bytes_amount);
- before->flops_amount = xbt_new0(double,
- before->host_count);
- before->bytes_amount = xbt_new0(double,
- before->host_count*
- before->host_count);
-
- 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)",
- sg_host_get_name(before->host_list[i]),
- sg_host_get_name(before->host_list[src_nb+j]),
- src_start, src_end, dst_start, dst_end);
- if ((src_end <= dst_start) || (dst_end <= src_start)) {
- before->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
- } else {
- before->bytes_amount[i*(src_nb+dst_nb)+src_nb+j] =
- MIN(src_end, dst_end) - MAX(src_start, dst_start);
- }
- XBT_VERB("==> %.2f",
- before->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]);
+ XBT_VERB("Schedule computation task %s on %d workstations. %.f flops will be distributed following Amdahl's Law",
+ SD_task_get_name(task), task->host_count, task->flops_amount[0]);
+ for (auto input : *task->inputs){
+ if (!input->host_list){
+ XBT_VERB("Sender side of Task %s is not scheduled yet", SD_task_get_name(input));
+ input->host_list = xbt_new0(sg_host_t, count);
+ input->host_count = count;
+ XBT_VERB("Fill the workstation list with list of Task '%s'", SD_task_get_name(task));
+ for (int i=0; i<count; i++)
+ input->host_list[i] = task->host_list[i];
+ } else {
+ XBT_VERB("Build communication matrix for task '%s'", SD_task_get_name(input));
+ int src_nb, dst_nb;
+ double src_start, src_end, dst_start, dst_end;
+ src_nb = input->host_count;
+ dst_nb = count;
+ input->host_list = static_cast<sg_host_t*>(xbt_realloc(input->host_list, (input->host_count+count)*sizeof(sg_host_t)));
+ for (int i=0; i<count; i++)
+ input->host_list[input->host_count+i] = task->host_list[i];
+
+ input->host_count += count;
+ xbt_free(input->flops_amount);
+ xbt_free(input->bytes_amount);
+ input->flops_amount = xbt_new0(double, input->host_count);
+ input->bytes_amount = xbt_new0(double, input->host_count* input->host_count);
+
+ for (int i=0; i<src_nb; i++) {
+ src_start = i*input->amount/src_nb;
+ src_end = src_start + input->amount/src_nb;
+ for (int j=0; j<dst_nb; j++) {
+ dst_start = j*input->amount/dst_nb;
+ dst_end = dst_start + input->amount/dst_nb;
+ XBT_VERB("(%s->%s): (%.2f, %.2f)-> (%.2f, %.2f)", sg_host_get_name(input->host_list[i]),
+ sg_host_get_name(input->host_list[src_nb+j]), src_start, src_end, dst_start, dst_end);
+ if ((src_end <= dst_start) || (dst_end <= src_start)) {
+ input->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
+ } else {
+ input->bytes_amount[i*(src_nb+dst_nb)+src_nb+j] = MIN(src_end, dst_end) - MAX(src_start, dst_start);
}
+ XBT_VERB("==> %.2f", input->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]);
}
+ }
- if (SD_task_get_state(before)< SD_SCHEDULED) {
- 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);
- }
+ if (SD_task_get_state(input)< SD_SCHEDULED) {
+ SD_task_do_schedule(input);
+ XBT_VERB ("Auto-Schedule redistribution task %s. Send %.f bytes from %d hosts to %d hosts.",
+ SD_task_get_name(input),input->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->host_list){
- XBT_VERB("Receiver side of Task '%s' is not scheduled yet",
- SD_task_get_name(after));
- after->host_list = xbt_new0(sg_host_t, count);
- after->host_count = count;
- XBT_VERB("Fill the workstation list with list of Task '%s'",
- SD_task_get_name(task));
- for (i=0;i<count;i++)
- after->host_list[i] = task->host_list[i];
- } else {
- int src_nb, dst_nb;
- double src_start, src_end, dst_start, dst_end;
- src_nb = count;
- dst_nb = after->host_count;
- after->host_list = (sg_host_t*) xbt_realloc(
- after->host_list,
- (after->host_count+count)*sizeof(sg_host_t));
- for(i=after->host_count - 1; i>=0; i--)
- after->host_list[count+i] = after->host_list[i];
- for(i=0; i<count; i++)
- after->host_list[i] = task->host_list[i];
-
- after->host_count += count;
-
- xbt_free(after->flops_amount);
- xbt_free(after->bytes_amount);
-
- after->flops_amount = xbt_new0(double, after->host_count);
- after->bytes_amount = xbt_new0(double,
- after->host_count*
- after->host_count);
-
- 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->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
- } else {
- after->bytes_amount[i*(src_nb+dst_nb)+src_nb+j] =
- MIN(src_end, dst_end)- MAX(src_start, dst_start);
- }
- XBT_VERB("==> %.2f",
- after->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]);
+
+ for (auto output : *task->outputs) {
+ if (!output->host_list){
+ XBT_VERB("Receiver side of Task '%s' is not scheduled yet", SD_task_get_name(output));
+ output->host_list = xbt_new0(sg_host_t, count);
+ output->host_count = count;
+ XBT_VERB("Fill the workstation list with list of Task '%s'", SD_task_get_name(task));
+ for (int i=0; i<count; i++)
+ output->host_list[i] = task->host_list[i];
+ } else {
+ double src_start, src_end, dst_start, dst_end;
+ int src_nb = count;
+ int dst_nb = output->host_count;
+ output->host_list = static_cast<sg_host_t*>(xbt_realloc(output->host_list, (output->host_count+count)*sizeof(sg_host_t)));
+ for (int i=output->host_count - 1; i>=0; i--)
+ output->host_list[count+i] = output->host_list[i];
+ for (int i=0; i<count; i++)
+ output->host_list[i] = task->host_list[i];
+
+ output->host_count += count;
+
+ xbt_free(output->flops_amount);
+ xbt_free(output->bytes_amount);
+
+ output->flops_amount = xbt_new0(double, output->host_count);
+ output->bytes_amount = xbt_new0(double, output->host_count* output->host_count);
+
+ for (int i=0; i<src_nb; i++) {
+ src_start = i*output->amount/src_nb;
+ src_end = src_start + output->amount/src_nb;
+ for (int j=0; j<dst_nb; j++) {
+ dst_start = j*output->amount/dst_nb;
+ dst_end = dst_start + output->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)) {
+ output->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
+ } else {
+ output->bytes_amount[i*(src_nb+dst_nb)+src_nb+j] = MIN(src_end, dst_end)- MAX(src_start, dst_start);
}
+ XBT_VERB("==> %.2f", output->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]);
}
+ }
- if (SD_task_get_state(after)< SD_SCHEDULED) {
- 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);
- }
- }
+ if (SD_task_get_state(output)< SD_SCHEDULED) {
+ SD_task_do_schedule(output);
+ XBT_VERB ("Auto-Schedule redistribution task %s. Send %.f bytes from %d hosts to %d hosts.",
+ output->name, output->amount, src_nb, dst_nb);
+ }
}
}
}
/** @brief autoschedule a task on a list of workstations
*
- * This function is very similar to SD_task_schedulev(),
- * but takes the list of workstations to schedule onto as separate parameters.
+ * This function is very similar to SD_task_schedulev(), but takes the list of workstations to schedule onto as
+ * separate parameters.
* It builds a proper vector of workstations and then call SD_task_schedulev()
*/
void SD_task_schedulel(SD_task_t task, int count, ...)
{
va_list ap;
sg_host_t *list = xbt_new(sg_host_t, count);
- int i;
va_start(ap, count);
- for (i = 0; i < count; i++) {
+ for (int i=0; i<count; i++) {
list[i] = va_arg(ap, sg_host_t);
}
va_end(ap);
