int main(int argc, char **argv)
{
unsigned int ctr;
SD_task_t task;
xbt_dynar_t changed_tasks;
SD_init(&argc, argv);
xbt_assert(argc > 1, "Usage: %s platform_file\n\nExample: %s two_clusters.xml", argv[0], argv[0]);
SD_create_environment(argv[1]);
sg_host_t *hosts = sg_host_list();
/* creation of some typed tasks and their dependencies */
/* chain of five tasks, three compute tasks with two data transfers in between */
SD_task_t taskA = SD_task_create_comp_seq("Task A", NULL, 5e9);
SD_task_t taskB = SD_task_create_comm_e2e("Task B", NULL, 1e7);
SD_task_t taskC = SD_task_create_comp_seq("Task C", NULL, 5e9);
SD_task_t taskD = SD_task_create_comm_e2e("Task D", NULL, 1e7);
SD_task_t taskE = SD_task_create_comp_seq("Task E", NULL, 5e9);
SD_task_dependency_add(NULL, NULL, taskA, taskB);
SD_task_dependency_add(NULL, NULL, taskB, taskC);
SD_task_dependency_add(NULL, NULL, taskC, taskD);
SD_task_dependency_add(NULL, NULL, taskD, taskE);
/* Add watchpoints on completion of compute tasks */
SD_task_watch(taskA, SD_DONE);
SD_task_watch(taskC, SD_DONE);
SD_task_watch(taskE, SD_DONE);
/* Auto-schedule the compute tasks on three different workstations */
/* Data transfer tasks taskB and taskD are automagically scheduled */
SD_task_schedulel(taskA, 1, hosts[0]);
SD_task_schedulel(taskC, 1, hosts[1]);
SD_task_schedulel(taskE, 1, hosts[0]);
while (!xbt_dynar_is_empty((changed_tasks = SD_simulate(-1.0)))) {
XBT_INFO("Simulation stopped after %.4f seconds", SD_get_clock());
xbt_dynar_foreach(changed_tasks, ctr, task) {
XBT_INFO("Task '%s' start time: %f, finish time: %f", SD_task_get_name(task), SD_task_get_start_time(task),
SD_task_get_finish_time(task));
}
/* let throttle the communication for taskD if its parent is SD_DONE */
/* the bandwidth is 1.25e8, the data size is 1e7, and we want to throttle the bandwidth by a factor 2.
* The rate is then 1.25e8/(2*1e7)=6.25
* Changing the rate is possible before the task execution starts (in SD_RUNNING state).
*/
if (SD_task_get_state(taskC) == SD_DONE && SD_task_get_state(taskD) < SD_RUNNING)
SD_task_set_rate(taskD, 6.25);
}
int main(int argc, char **argv)
{
unsigned int ctr;
const char *platform_file;
const SD_workstation_t *workstations;
SD_task_t task, taskA, taskB, taskC, taskD, taskE;
xbt_dynar_t changed_tasks;
/* initialization of SD */
SD_init(&argc, argv);
/* xbt_log_control_set("sd.thres=debug"); */
if (argc < 2) {
XBT_INFO("Usage: %s platform_file", argv[0]);
XBT_INFO("example: %s sd_platform.xml", argv[0]);
exit(1);
}
/* creation of the environment */
platform_file = argv[1];
SD_create_environment(platform_file);
workstations = SD_workstation_get_list();
/* creation of some typed tasks and their dependencies */
/* chain of five tasks, three compute tasks with two data transfers */
/* in between */
taskA = SD_task_create_comp_seq("Task A", NULL, 5e9);
taskB = SD_task_create_comm_e2e("Task B", NULL, 1e7);
taskC = SD_task_create_comp_seq("Task C", NULL, 5e9);
taskD = SD_task_create_comm_e2e("Task D", NULL, 1e7);
taskE = SD_task_create_comp_seq("Task E", NULL, 5e9);
SD_task_dependency_add(NULL, NULL, taskA, taskB);
SD_task_dependency_add(NULL, NULL, taskB, taskC);
SD_task_dependency_add(NULL, NULL, taskC, taskD);
SD_task_dependency_add(NULL, NULL, taskD, taskE);
/* Add watchpoints on completion of compute tasks */
SD_task_watch(taskA, SD_DONE);
SD_task_watch(taskC, SD_DONE);
SD_task_watch(taskE, SD_DONE);
/* Auto-schedule the compute tasks on three different workstations */
/* Data transfer tasks taskB and taskD are automagically scheduled */
SD_task_schedulel(taskA, 1, workstations[0]);
SD_task_schedulel(taskC, 1, workstations[1]);
SD_task_schedulel(taskE, 1, workstations[0]);
while (!xbt_dynar_is_empty((changed_tasks = SD_simulate(-1.0)))) {
XBT_INFO("Simulation stopped after %.4f seconds", SD_get_clock());
xbt_dynar_foreach(changed_tasks, ctr, task) {
XBT_INFO("Task '%s' start time: %f, finish time: %f",
SD_task_get_name(task),
SD_task_get_start_time(task),
SD_task_get_finish_time(task));
}
/* let throttle the communication for taskD if its parent is SD_DONE */
/* the bandwidth is 1.25e8, the data size is 1e7, and we want to throttle
* the bandwidth by a factor 2. the rate is then 1.25e8/(2*1e7)=6.25
* Changing the rate is possible before the task execution starts (in SD_RUNNING
* state).
*/
if (SD_task_get_state(taskC) == SD_DONE && SD_task_get_state(taskD) < SD_RUNNING)
SD_task_set_rate(taskD, 6.25);
xbt_dynar_free_container(&changed_tasks);
}
