-/* Copyright (c) 2006-2016. The SimGrid Team.
+/* Copyright (c) 2006-2019. The SimGrid Team.
* All rights reserved. */
/* 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 "simdag_private.hpp"
#include "src/surf/HostImpl.hpp"
#include "src/surf/surf_interface.hpp"
-#include "src/simdag/simdag_private.h"
-#include "simgrid/simdag.h"
-#include "src/instr/instr_private.h"
+#include <algorithm>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_task, sd, "Logging specific to SimDag (task)");
xbt_free(task->flops_amount);
xbt_free(task->bytes_amount);
- task->flops_amount = nullptr;
task->bytes_amount = nullptr;
+ task->flops_amount = nullptr;
}
-void* SD_task_new_f()
+/**
+ * @brief Creates a new task.
+ *
+ * @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 = xbt_new0(s_SD_task_t, 1);
-
- 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 = static_cast<SD_task_t>(t);
-
- /* Reset the content */
task->kind = SD_TASK_NOT_TYPED;
task->state= SD_NOT_SCHEDULED;
sd_global->initial_tasks->insert(task);
task->marked = 0;
-
task->start_time = -1.0;
task->finish_time = -1.0;
task->surf_action = nullptr;
task->watch_points = 0;
- /* dependencies */
- task->inputs->clear();
- task->outputs->clear();
- task->predecessors->clear();
- task->successors->clear();
-
- /* scheduling parameters */
- task->host_count = 0;
- 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 = static_cast<SD_task_t>(t);
-
- delete task->inputs;
- delete task->outputs;
- delete task->predecessors;
- delete task->successors;
-
- xbt_free(task);
-}
-
-/**
- * \brief Creates a new task.
- *
- * \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 = static_cast<SD_task_t>(xbt_mallocator_get(sd_global->task_mallocator));
+ 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>();
task->data = data;
task->name = xbt_strdup(name);
task->amount = amount;
- task->remains = amount;
-
+ task->allocation = new std::vector<sg_host_t>();
+ task->rate = -1;
return task;
}
-static 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 count)
{
SD_task_t task = SD_task_create(name, data, amount);
- task->bytes_amount = xbt_new0(double, ws_count * ws_count);
- task->flops_amount = xbt_new0(double, ws_count);
- task->host_count = ws_count;
- task->host_list = xbt_new0(sg_host_t, ws_count);
+ task->bytes_amount = xbt_new0(double, count * count);
+ task->flops_amount = xbt_new0(double, count);
return task;
}
*
* 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 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
+ * @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)
{
*
* 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 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
+ * 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)
{
/** @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().
+ * 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.
*
* 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 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
+ * 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 res = SD_task_create(name, data, amount);
- res->host_list=nullptr;
res->kind = SD_TASK_COMM_PAR_MXN_1D_BLOCK;
return res;
}
/**
- * \brief Destroys a task.
+ * @brief Destroys a task.
*
* The user data (if any) should have been destroyed first.
*
- * \param task the task you want to destroy
- * \see SD_task_create()
+ * @param task the task you want to destroy
+ * @see SD_task_create()
*/
void SD_task_destroy(SD_task_t task)
{
XBT_DEBUG("Destroying task %s...", SD_task_get_name(task));
/* First Remove all dependencies associated with the task. */
- while (!task->predecessors->empty())
+ while (not task->predecessors->empty())
SD_task_dependency_remove(*(task->predecessors->begin()), task);
- while (!task->inputs->empty())
+ while (not task->inputs->empty())
SD_task_dependency_remove(*(task->inputs->begin()), task);
- while (!task->successors->empty())
+ while (not task->successors->empty())
SD_task_dependency_remove(task, *(task->successors->begin()));
- while (!task->outputs->empty())
- SD_task_dependency_remove(task, *(task->outputs->begin()));
+ while (not 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);
- int idx = xbt_dynar_search_or_negative(sd_global->return_set, &task);
- if (idx >=0) {
- xbt_dynar_remove_at(sd_global->return_set, idx, nullptr);
- }
-
xbt_free(task->name);
if (task->surf_action != nullptr)
task->surf_action->unref();
- xbt_free(task->host_list);
+ delete task->allocation;
xbt_free(task->bytes_amount);
xbt_free(task->flops_amount);
-
- xbt_mallocator_release(sd_global->task_mallocator,task);
+ delete task->inputs;
+ delete task->outputs;
+ delete task->predecessors;
+ delete task->successors;
+ xbt_free(task);
XBT_DEBUG("Task destroyed.");
}
/**
- * \brief Returns the user data of a task
+ * @brief Returns the user data of a task
*
- * \param task a task
- * \return the user data associated with this task (can be \c nullptr)
- * \see SD_task_set_data()
+ * @param task a task
+ * @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
+ * @brief Sets the user data of a task
*
- * The new data can be \c nullptr. The old data should have been freed first
- * if it was not \c nullptr.
+ * 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
- * \see SD_task_get_data()
+ * @param task a task
+ * @param data the new data you want to associate with this task
+ * @see SD_task_get_data()
*/
void SD_task_set_data(SD_task_t task, void *data)
{
}
/**
- * \brief Sets the rate of a 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.
+ * 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)
*
- * \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.
+ * @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)
{
}
/**
- * \brief Returns the state of a task
+ * @brief Returns the state of a task
*
- * \param task a task
- * \return the current \ref e_SD_task_state_t "state" of this task:
+ * @param task a task
+ * @return the current @ref e_SD_task_state_t "state" of this task:
* #SD_NOT_SCHEDULED, #SD_SCHEDULED, #SD_RUNNABLE, #SD_RUNNING, #SD_DONE or #SD_FAILED
- * \see e_SD_task_state_t
+ * @see e_SD_task_state_t
*/
e_SD_task_state_t SD_task_get_state(SD_task_t task)
{
if (new_state == SD_DONE || new_state == SD_FAILED){
sd_global->completed_tasks->insert(task);
- task->start_time = task->surf_action->getStartTime();
+ task->start_time = task->surf_action->get_start_time();
if (new_state == SD_DONE){
- task->finish_time = task->surf_action->getFinishTime();
- task->remains = 0;
-#if HAVE_JEDULE
+ task->finish_time = task->surf_action->get_finish_time();
+#if SIMGRID_HAVE_JEDULE
jedule_log_sd_event(task);
#endif
} else
task->finish_time = surf_get_clock();
task->surf_action->unref();
task->surf_action = nullptr;
+ task->allocation->clear();
}
task->state = new_state;
if (task->watch_points & new_state) {
- XBT_VERB("Watch point reached with task '%s'!", SD_task_get_name(task));
+ XBT_VERB("Watch point reached with task '%s'!", task->name);
sd_global->watch_point_reached = true;
SD_task_unwatch(task, new_state); /* remove the watch point */
}
}
/**
- * \brief Returns the name of a task
+ * @brief Returns the name of a task
*
- * \param task a task
- * \return the name of this task (can be \c nullptr)
+ * @param task a task
+ * @return the name of this task (can be @c nullptr)
*/
const char *SD_task_get_name(SD_task_t task)
{
/** @brief Returns the dynar of the parents of a task
*
- * \param task a task
- * \return a newly allocated dynar comprising the parents of this task
+ * @param task a task
+ * @return a newly allocated dynar comprising the parents of this task
*/
xbt_dynar_t SD_task_get_parents(SD_task_t task)
{
xbt_dynar_t parents = xbt_dynar_new(sizeof(SD_task_t), nullptr);
- for (std::set<SD_task_t>::iterator it=task->predecessors->begin(); it!=task->predecessors->end(); ++it)
- xbt_dynar_push(parents, &(*it));
- for (std::set<SD_task_t>::iterator it=task->inputs->begin(); it!=task->inputs->end(); ++it)
- xbt_dynar_push(parents, &(*it));
+ for (auto const& it : *task->predecessors)
+ xbt_dynar_push(parents, &it);
+ for (auto const& it : *task->inputs)
+ xbt_dynar_push(parents, &it);
return parents;
}
/** @brief Returns the dynar of the parents of a task
*
- * \param task a task
- * \return a newly allocated dynar comprising the parents of this task
+ * @param task a task
+ * @return a newly allocated dynar comprising the parents of this task
*/
xbt_dynar_t SD_task_get_children(SD_task_t task)
{
xbt_dynar_t children = xbt_dynar_new(sizeof(SD_task_t), nullptr);
- for (std::set<SD_task_t>::iterator it=task->successors->begin(); it!=task->successors->end(); ++it)
- xbt_dynar_push(children, &(*it));
- for (std::set<SD_task_t>::iterator it=task->outputs->begin(); it!=task->outputs->end(); ++it)
- xbt_dynar_push(children, &(*it));
+ for (auto const& it : *task->successors)
+ xbt_dynar_push(children, &it);
+ for (auto const& it : *task->outputs)
+ xbt_dynar_push(children, &it);
return children;
}
/**
- * \brief Returns the number 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
+ * @param task a task
*/
int SD_task_get_workstation_count(SD_task_t task)
{
- return task->host_count;
+ return task->allocation->size();
}
/**
- * \brief Returns the list of workstations involved in a task
+ * @brief Returns the list of workstations involved in a task
*
* Only call this on already scheduled tasks!
- * \param task a task
+ * @param task a task
*/
sg_host_t *SD_task_get_workstation_list(SD_task_t task)
{
- return task->host_list;
+ return task->allocation->data();
}
/**
- * \brief Returns the total amount of work contained in a task
+ * @brief Returns the total amount of work contained in a task
*
- * \param task a task
- * \return the total amount of work (computation or data transfer) for this task
- * \see SD_task_get_remaining_amount()
+ * @param task a task
+ * @return the total amount of work (computation or data transfer) for this task
+ * @see SD_task_get_remaining_amount()
*/
double SD_task_get_amount(SD_task_t task)
{
* 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
+ * @param task a task
+ * @param amount the new amount of work to execute
*/
void SD_task_set_amount(SD_task_t task, double amount)
{
}
/**
- * \brief Returns the alpha parameter of a SD_TASK_COMP_PAR_AMDAHL task
+ * @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
+ * @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
*/
double SD_task_get_alpha(SD_task_t task)
{
}
/**
- * \brief Returns the remaining amount work to do till the completion of a task
+ * @brief Returns the remaining amount work to do till the completion of a task
*
- * \param task a task
- * \return the remaining amount of work (computation or data transfer) of this task
- * \see SD_task_get_amount()
+ * @param task a task
+ * @return the remaining amount of work (computation or data transfer) of this task
+ * @see SD_task_get_amount()
*/
double SD_task_get_remaining_amount(SD_task_t task)
{
if (task->surf_action)
- return task->surf_action->getRemains();
+ return task->surf_action->get_remains();
else
- return task->remains;
+ return (task->state == SD_DONE) ? 0 : task->amount;
}
e_SD_task_kind_t SD_task_get_kind(SD_task_t task)
void SD_task_dump(SD_task_t task)
{
XBT_INFO("Displaying task %s", SD_task_get_name(task));
- 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_RUNNING ? " running" : ""),
- (task->state == SD_DONE ? " done" : ""),
- (task->state == SD_FAILED ? " failed" : ""));
- XBT_INFO(" - state:%s", statename);
- free(statename);
+ if (task->state == SD_RUNNABLE)
+ XBT_INFO(" - state: runnable");
+ else if (task->state < SD_RUNNABLE)
+ XBT_INFO(" - state: %s not runnable", __get_state_name(task->state));
+ else
+ XBT_INFO(" - state: not runnable %s", __get_state_name(task->state));
if (task->kind != 0) {
switch (task->kind) {
XBT_INFO(" - Dependencies to satisfy: %zu", task->inputs->size()+ task->predecessors->size());
if ((task->inputs->size()+ task->predecessors->size()) > 0) {
XBT_INFO(" - pre-dependencies:");
- for (std::set<SD_task_t>::iterator it=task->predecessors->begin(); it!=task->predecessors->end(); ++it)
- XBT_INFO(" %s", SD_task_get_name(*it));
+ for (auto const& it : *task->predecessors)
+ XBT_INFO(" %s", it->name);
- for (std::set<SD_task_t>::iterator it=task->inputs->begin(); it!=task->inputs->end(); ++it)
- XBT_INFO(" %s", SD_task_get_name(*it));
+ for (auto const& it : *task->inputs)
+ XBT_INFO(" %s", it->name);
}
if ((task->outputs->size() + task->successors->size()) > 0) {
XBT_INFO(" - post-dependencies:");
- for (std::set<SD_task_t>::iterator it=task->successors->begin(); it!=task->successors->end(); ++it)
- XBT_INFO(" %s", SD_task_get_name(*it));
- for (std::set<SD_task_t>::iterator it=task->outputs->begin(); it!=task->outputs->end(); ++it)
- XBT_INFO(" %s", SD_task_get_name(*it));
+ for (auto const& it : *task->successors)
+ XBT_INFO(" %s", it->name);
+ for (auto const& it : *task->outputs)
+ XBT_INFO(" %s", it->name);
}
}
xbt_die("Unknown task type!");
}
fprintf(fout, "];\n");
- for (std::set<SD_task_t>::iterator it=task->predecessors->begin(); it!=task->predecessors->end(); ++it)
- fprintf(fout, " T%p -> T%p;\n", (*it), task);
- for (std::set<SD_task_t>::iterator it=task->inputs->begin(); it!=task->inputs->end(); ++it)
- fprintf(fout, " T%p -> T%p;\n", (*it), task);
+ for (auto const& it : *task->predecessors)
+ fprintf(fout, " T%p -> T%p;\n", it, task);
+ for (auto const& it : *task->inputs)
+ fprintf(fout, " T%p -> T%p;\n", it, task);
}
/**
- * \brief Adds a dependency between two tasks
+ * @brief Adds a dependency between two tasks
*
- * \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.
+ * @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 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()
+ * @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(SD_task_t src, SD_task_t dst)
{
if (src == dst)
THROWF(arg_error, 0, "Cannot add a dependency between task '%s' and itself", SD_task_get_name(src));
}
/**
- * \brief Indicates whether there is a dependency between two tasks.
+ * @brief Indicates whether there is a dependency between two tasks.
*
- * \param src a task
- * \param dst a task depending on \a src
+ * @param src a task
+ * @param dst a task depending on @a src
*
* If src is nullptr, checks whether dst has any pre-dependency.
* If dst is nullptr, checks whether src has any post-dependency.
} else {
return dst->predecessors->size() + dst->inputs->size();
}
- return 0;
}
/**
- * \brief Remove a dependency between two tasks
+ * @brief Remove a dependency between two tasks
*
- * \param src a task
- * \param dst a task depending on \a src
- * \see SD_task_dependency_add()
+ * @param src a task
+ * @param dst a task depending on @a src
+ * @see SD_task_dependency_add()
*/
void SD_task_dependency_remove(SD_task_t src, SD_task_t dst)
{
}
/**
- * \brief Adds a watch point to a task
+ * @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.
+ * 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)
- * \see SD_task_unwatch()
+ * @param task a task
+ * @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)
{
}
/**
- * \brief Removes a watch point from a task
+ * @brief Removes a watch point from a task
*
- * \param task a task
- * \param state the \ref e_SD_task_state_t "state" you no longer want to watch
- * \see SD_task_watch()
+ * @param task a task
+ * @param state the @ref e_SD_task_state_t "state" you no longer want to watch
+ * @see SD_task_watch()
*/
void SD_task_unwatch(SD_task_t task, e_SD_task_state_t state)
{
}
/**
- * \brief Returns an approximative estimation of the execution time of a task.
+ * @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.
*
- * \param task the task to evaluate
- * \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()
+ * @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 host_count, const sg_host_t *host_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)
{
xbt_assert(host_count > 0, "Invalid parameter");
double max_time = 0.0;
for (int i = 0; i < host_count; i++) {
double time = 0.0;
if (flops_amount != nullptr)
- time = flops_amount[i] / host_list[i]->speed();
+ time = flops_amount[i] / host_list[i]->get_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]));
+ time += (sg_host_route_latency(host_list[i], host_list[j]) +
+ bytes_amount[i * host_count + j] / sg_host_route_bandwidth(host_list[i], host_list[j]));
if (time > max_time)
max_time = time;
}
/**
- * \brief Schedules a task
+ * @brief Schedules a task
*
* The task state must be #SD_NOT_SCHEDULED.
- * Once scheduled, a task is executed as soon as possible in \see 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 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()
+ * @param task the task you want to schedule
+ * @param host_count number of hosts on which the task will be executed
+ * @param host_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 host_count, const sg_host_t * host_list,
const double *flops_amount, const double *bytes_amount, double rate)
{
- xbt_assert(host_count > 0, "workstation_nb must be positive");
+ xbt_assert(host_count > 0, "host_count must be positive");
- task->host_count = host_count;
task->rate = rate;
if (flops_amount) {
task->bytes_amount = nullptr;
}
- 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);
+ for(int i =0; i<host_count; i++)
+ task->allocation->push_back(host_list[i]);
SD_task_do_schedule(task);
}
/**
- * \brief Unschedules a task
+ * @brief Unschedules a task
*
* The task state must be #SD_SCHEDULED, #SD_RUNNABLE, #SD_RUNNING or #SD_FAILED.
* If you call this function, the task state becomes #SD_NOT_SCHEDULED.
* Call SD_task_schedule() to schedule it again.
*
- * \param task the task you want to unschedule
- * \see SD_task_schedule()
+ * @param task the task you want to unschedule
+ * @see SD_task_schedule()
*/
void SD_task_unschedule(SD_task_t task)
{
&& ((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=nullptr;
- task->host_count = 0;
+ task->allocation->clear();
}
if (SD_task_get_state(task) == SD_RUNNING)
else
SD_task_set_state(task, SD_NOT_SCHEDULED);
}
- task->remains = task->amount;
task->start_time = -1.0;
}
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);
+ xbt_assert(task->allocation != nullptr, "Task '%s': host_list is nullptr!", task->name);
XBT_VERB("Executing task '%s'", task->name);
- /* Copy the elements of the task into the action */
- int host_nb = task->host_count;
- sg_host_t *hosts = xbt_new(sg_host_t, host_nb);
+ /* Beware! The scheduling data are now used by the surf action directly! no copy was done */
+ task->surf_action =
+ surf_host_model->execute_parallel(*task->allocation, task->flops_amount, task->bytes_amount, task->rate);
- for (int i = 0; i < host_nb; i++)
- hosts[i] = task->host_list[i];
-
- double *flops_amount = xbt_new0(double, host_nb);
- double *bytes_amount = xbt_new0(double, host_nb * 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);
-
- task->surf_action = surf_host_model->executeParallelTask(host_nb, hosts, flops_amount, bytes_amount, task->rate);
-
- task->surf_action->setData(task);
+ task->surf_action->set_data(task);
XBT_DEBUG("surf_action = %p", task->surf_action);
- __SD_task_destroy_scheduling_data(task); /* now the scheduling data are not useful anymore */
SD_task_set_state(task, SD_RUNNING);
- xbt_dynar_push(sd_global->return_set, &task);
+ sd_global->return_set->insert(task);
}
/**
- * \brief Returns the start time of a task
+ * @brief Returns the start time of a task
*
* The task state must be SD_RUNNING, SD_DONE or SD_FAILED.
*
- * \param task: a task
- * \return the start time of this task
+ * @param task: a task
+ * @return the start time of this task
*/
double SD_task_get_start_time(SD_task_t task)
{
if (task->surf_action)
- return task->surf_action->getStartTime();
+ return task->surf_action->get_start_time();
else
return task->start_time;
}
/**
- * \brief Returns the finish time of a 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
* vary until the task is completed.
*
- * \param task: a task
- * \return the start time of this task
+ * @param task: a task
+ * @return the start time of this task
*/
double SD_task_get_finish_time(SD_task_t task)
{
if (task->surf_action) /* should never happen as actions are destroyed right after their completion */
- return task->surf_action->getFinishTime();
+ return task->surf_action->get_finish_time();
else
return task->finish_time;
}
-void SD_task_distribute_comp_amdahl(SD_task_t task, int ws_count)
+void SD_task_distribute_comp_amdahl(SD_task_t task, int count)
{
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(int i=0;i<ws_count;i++){
- task->flops_amount[i] = (task->alpha + (1 - task->alpha)/ws_count) * task->amount;
+ task->flops_amount = xbt_new0(double, count);
+ task->bytes_amount = xbt_new0(double, count * count);
+
+ for (int i=0; i<count; i++){
+ task->flops_amount[i] = (task->alpha + (1 - task->alpha)/count) * task->amount;
+ }
+}
+
+void SD_task_build_MxN_1D_block_matrix(SD_task_t task, int src_nb, int dst_nb){
+ xbt_assert(task->kind == SD_TASK_COMM_PAR_MXN_1D_BLOCK, "Task %s is not a SD_TASK_COMM_PAR_MXN_1D_BLOCK typed task."
+ "Cannot use this function.", task->name);
+ xbt_free(task->bytes_amount);
+ task->bytes_amount = xbt_new0(double,task->allocation->size() * task->allocation->size());
+
+ for (int i=0; i<src_nb; i++) {
+ double src_start = i*task->amount/src_nb;
+ double src_end = src_start + task->amount/src_nb;
+ for (int j=0; j<dst_nb; j++) {
+ double dst_start = j*task->amount/dst_nb;
+ double dst_end = dst_start + task->amount/dst_nb;
+ XBT_VERB("(%d->%d): (%.2f, %.2f)-> (%.2f, %.2f)", i, j, src_start, src_end, dst_start, dst_end);
+ task->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]=0.0;
+ if ((src_end > dst_start) && (dst_end > src_start)) { /* There is something to send */
+ task->bytes_amount[i * (src_nb + dst_nb) + src_nb + j] =
+ std::min(src_end, dst_end) - std::max(src_start, dst_start);
+ XBT_VERB("==> %.2f", task->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]);
+ }
+ }
}
}
* 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 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)
+ * To be auto-schedulable, a task must be a typed computation SD_TASK_COMP_SEQ or SD_TASK_COMP_PAR_AMDAHL.
*/
void SD_task_schedulev(SD_task_t task, int count, const sg_host_t * list)
{
- int i;
- int j;
- 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++)
- 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*/
+ xbt_assert(task->kind == SD_TASK_COMP_SEQ || task->kind == SD_TASK_COMP_PAR_AMDAHL,
+ "Task %s is not typed. Cannot automatically schedule it.", SD_task_get_name(task));
+
+ for(int i =0; i<count; i++)
+ task->allocation->push_back(list[i]);
+
+ XBT_VERB("Schedule computation task %s on %zu host(s)", task->name, task->allocation->size());
+
+ if (task->kind == SD_TASK_COMP_SEQ) {
+ if (not task->flops_amount) { /*This task has failed and is rescheduled. Reset the flops_amount*/
task->flops_amount = xbt_new0(double, 1);
- task->flops_amount[0] = task->remains;
+ task->flops_amount[0] = task->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_VERB("It costs %.f flops", task->flops_amount[0]);
}
- 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_COMP_PAR_AMDAHL) {
+ SD_task_distribute_comp_amdahl(task, count);
+ XBT_VERB("%.f flops will be distributed following Amdahl's Law", task->flops_amount[0]);
}
- /* 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]);
-
- for (std::set<SD_task_t>::iterator it=task->inputs->begin(); it!=task->inputs->end(); ++it){
- SD_task_t input = *it;
- 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]);
- }
- }
+ SD_task_do_schedule(task);
- for (std::set<SD_task_t>::iterator it=task->outputs->begin(); it!=task->outputs->end(); ++it){
- SD_task_t output = *it;
- 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 inputs and outputs to say where I am located (and start them if runnable) */
+ for (auto const& input : *task->inputs) {
+ int src_nb = input->allocation->size();
+ int dst_nb = count;
+ if (input->allocation->empty())
+ XBT_VERB("Sender side of '%s' not scheduled. Set receiver side to '%s''s allocation", input->name, task->name);
+
+ for (int i=0; i<count;i++)
+ input->allocation->push_back(task->allocation->at(i));
+
+ if (input->allocation->size () > task->allocation->size()) {
+ if (task->kind == SD_TASK_COMP_PAR_AMDAHL)
+ SD_task_build_MxN_1D_block_matrix(input, src_nb, dst_nb);
+
+ SD_task_do_schedule(input);
+ XBT_VERB ("Auto-Schedule Communication task '%s'. Send %.f bytes from %d hosts to %d hosts.",
+ input->name,input->amount, src_nb, dst_nb);
}
}
- /* 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]);
- for (std::set<SD_task_t>::iterator it=task->inputs->begin(); it!=task->inputs->end(); ++it){
- SD_task_t input = *it;
- 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 (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(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(i=0;i<src_nb;i++){
- src_start = i*input->amount/src_nb;
- src_end = src_start + input->amount/src_nb;
- for(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(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);
- }
- }
- }
+ for (auto const& output : *task->outputs) {
+ int src_nb = count;
+ int dst_nb = output->allocation->size();
+ if (output->allocation->empty())
+ XBT_VERB("Receiver side of '%s' not scheduled. Set sender side to '%s''s allocation", output->name, task->name);
- for (std::set<SD_task_t>::iterator it=task->outputs->begin(); it!=task->outputs->end(); ++it){
- SD_task_t output = *it;
- 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 (i=0;i<count;i++)
- output->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 = 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(i=output->host_count - 1; i>=0; i--)
- output->host_list[count+i] = output->host_list[i];
- for(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(i=0;i<src_nb;i++){
- src_start = i*output->amount/src_nb;
- src_end = src_start + output->amount/src_nb;
- for(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(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);
- }
- }
+ for (int i=0; i<count;i++)
+ output->allocation->insert(output->allocation->begin()+i, task->allocation->at(i));
+
+ if (output->allocation->size () > task->allocation->size()) {
+ if (task->kind == SD_TASK_COMP_PAR_AMDAHL)
+ SD_task_build_MxN_1D_block_matrix(output, src_nb, dst_nb);
+
+ SD_task_do_schedule(output);
+ XBT_VERB ("Auto-Schedule Communication 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
+/** @brief autoschedule a task on a list of hosts
*
- * 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()
+ * This function is similar to SD_task_schedulev(), but takes the list of hosts to schedule onto as separate parameters.
+ * It builds a proper vector of hosts 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);
+ sg_host_t* list = new sg_host_t[count];
va_start(ap, count);
- for (int i = 0; i < count; i++) {
+ for (int i=0; i<count; i++)
list[i] = va_arg(ap, sg_host_t);
- }
+
va_end(ap);
SD_task_schedulev(task, count, list);
- free(list);
+ delete[] list;
}
