/* 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"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sd_task, sd, "Logging specific to SimDag (task)");
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->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;
}
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)
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.");
}
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
if (task->surf_action)
return task->surf_action->getRemains();
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) {
else
SD_task_set_state(task, SD_NOT_SCHEDULED);
}
- task->remains = task->amount;
task->start_time = -1.0;
}
/* Copy the elements of the task into the action */
int host_nb = task->allocation->size();
- XBT_DEBUG("%d", host_nb);
sg_host_t *hosts = xbt_new(sg_host_t, host_nb);
int i =0;
- for (auto host: *task->allocation)
- hosts[i++] = host;
+ for (auto host: *task->allocation){
+ hosts[i] = host;
+ i++;
+ }
double *flops_amount = xbt_new0(double, host_nb);
double *bytes_amount = xbt_new0(double, host_nb * host_nb);
__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);
}
/**
}
}
+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] = MIN(src_end, dst_end)- MAX(src_start, dst_start);
+ XBT_VERB("==> %.2f", task->bytes_amount[i*(src_nb+dst_nb)+src_nb+j]);
+ }
+ }
+ }
+}
+
/** @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
* 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)
{
- xbt_assert(task->kind != 0, "Task %s is not typed. Cannot automatically schedule it.", SD_task_get_name(task));
+ 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 (!task->flops_amount){
- /*This task has failed and is rescheduled. Reset the flops_amount*/
+ if (!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;
- }
- XBT_VERB("Schedule computation task %s on %s. It costs %.f flops", task->name,
- sg_host_get_name(task->allocation->at(0)), task->flops_amount[0]);
- SD_task_do_schedule(task);
-
- /* Iterate over all inputs and outputs to say where I am located (and start them if runnable) */
- for (auto input : *task->inputs){
- input->allocation->push_back(task->allocation->front());
- if (input->allocation->size () == 2) {
- 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->allocation->at(0)), sg_host_get_name(input->allocation->at(1)),
- input->bytes_amount[2]);
- }
- }
-
- for (auto output : *task->outputs){
- output->allocation->insert(output->allocation->begin(),task->allocation->front());
- if (output->allocation->size() == 2) {
- 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->allocation->at(0)), sg_host_get_name(output->allocation->at(1)),
- output->bytes_amount[2]);
- }
+ task->flops_amount[0] = task->amount;
}
+ XBT_VERB("It costs %.f flops", task->flops_amount[0]);
}
if (task->kind == SD_TASK_COMP_PAR_AMDAHL) {
SD_task_distribute_comp_amdahl(task, count);
- XBT_VERB("Schedule computation task %s on %zu workstations. %.f flops will be distributed following Amdahl's Law",
- task->name, task->allocation->size(), task->flops_amount[0]);
- SD_task_do_schedule(task);
-
- /* Iterate over all inputs and outputs to say where I am located (and start them if runnable) */
- for (auto input : *task->inputs){
- if (input->allocation->empty()){
- XBT_VERB("Sender side of Task %s is not scheduled yet", input->name);
- XBT_VERB("Fill the workstation list with list of Task '%s'", task->name);
- for (int i=0; i<count;i++)
- input->allocation->push_back(task->allocation->at(i));
- } else {
- XBT_VERB("Build communication matrix for task '%s'", input->name);
- int src_nb = input->allocation->size();
- int dst_nb = count;
- for (int i=0; i<count;i++)
- input->allocation->push_back(task->allocation->at(i));
- xbt_free(input->flops_amount);
- xbt_free(input->bytes_amount);
- input->flops_amount = xbt_new0(double, input->allocation->size());
- input->bytes_amount = xbt_new0(double, input->allocation->size() * input->allocation->size());
-
- for (int i=0; i<src_nb; i++) {
- double src_start = i*input->amount/src_nb;
- double src_end = src_start + input->amount/src_nb;
- for (int j=0; j<dst_nb; j++) {
- double dst_start = j*input->amount/dst_nb;
- double dst_end = dst_start + input->amount/dst_nb;
- XBT_VERB("(%s->%s): (%.2f, %.2f)-> (%.2f, %.2f)", sg_host_get_name(input->allocation->at(i)),
- sg_host_get_name(input->allocation->at(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.",
- input->name,input->amount, src_nb, dst_nb);
- }
- }
+ XBT_VERB("%.f flops will be distributed following Amdahl's Law", task->flops_amount[0]);
+ }
+
+ SD_task_do_schedule(task);
+
+ /* Iterate over all inputs and outputs to say where I am located (and start them if runnable) */
+ for (auto 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);
}
+ }
- for (auto output : *task->outputs) {
- if (output->allocation->empty()){
- XBT_VERB("Receiver side of Task '%s' is not scheduled yet", SD_task_get_name(output));
- XBT_VERB("Fill the workstation list with list of Task '%s'", SD_task_get_name(task));
- for (int i=0; i<count;i++)
- output->allocation->push_back(task->allocation->at(i));
- } else {
- double src_start, src_end, dst_start, dst_end;
- int src_nb = count;
- int dst_nb = output->allocation->size();
- for (int i=0; i<count;i++)
- output->allocation->insert(output->allocation->begin()+i, task->allocation->at(i));
- xbt_free(output->flops_amount);
- xbt_free(output->bytes_amount);
-
- output->flops_amount = xbt_new0(double, output->allocation->size());
- output->bytes_amount = xbt_new0(double, output->allocation->size() * output->allocation->size());
-
- 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(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 (auto 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 (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, ...)
{
