1 /* Copyright (c) 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "simdag/simdag.h"
13 XBT_LOG_NEW_DEFAULT_CATEGORY(sd_comm_throttling,
14 "Logging specific to this SimDag example");
16 int main(int argc, char **argv)
19 const char *platform_file;
20 const SD_workstation_t *workstations;
21 SD_task_t task, taskA, taskB, taskC, taskD, taskE;
22 xbt_dynar_t changed_tasks;
24 SD_workstation_t workstation_list[4];
26 /* initialization of SD */
29 /* xbt_log_control_set("sd.thres=debug"); */
32 XBT_INFO("Usage: %s platform_file", argv[0]);
33 XBT_INFO("example: %s sd_platform.xml", argv[0]);
37 /* creation of the environment */
38 platform_file = argv[1];
39 SD_create_environment(platform_file);
41 workstations = SD_workstation_get_list();
43 /* creation of some typed tasks and their dependencies */
44 /* chain of five tasks, three compute tasks with two data transfers */
46 taskA = SD_task_create_comp_seq("Task A", NULL, 5e9);
47 taskB = SD_task_create_comm_e2e("Task B", NULL, 1e7);
48 taskC = SD_task_create_comp_seq("Task C", NULL, 5e9);
49 taskD = SD_task_create_comm_e2e("Task D", NULL, 1e7);
50 taskE = SD_task_create_comp_seq("Task E", NULL, 5e9);
52 SD_task_dependency_add(NULL, NULL, taskA, taskB);
53 SD_task_dependency_add(NULL, NULL, taskB, taskC);
54 SD_task_dependency_add(NULL, NULL, taskC, taskD);
55 SD_task_dependency_add(NULL, NULL, taskD, taskE);
57 /* Add watchpoints on completion of compute tasks */
58 SD_task_watch(taskA, SD_DONE);
59 SD_task_watch(taskC, SD_DONE);
60 SD_task_watch(taskE, SD_DONE);
62 /* Auto-schedule the compute tasks on three different workstations */
63 /* Data transfer tasks taskB and taskD are automagically scheduled */
64 SD_task_schedulel(taskA, 1, workstations[0]);
65 SD_task_schedulel(taskC, 1, workstations[1]);
66 SD_task_schedulel(taskE, 1, workstations[0]);
67 while (!xbt_dynar_is_empty((changed_tasks = SD_simulate(-1.0)))) {
68 XBT_INFO("Simulation stopped after %.4f seconds", SD_get_clock());
69 xbt_dynar_foreach(changed_tasks, ctr, task) {
70 XBT_INFO("Task '%s' start time: %f, finish time: %f",
71 SD_task_get_name(task),
72 SD_task_get_start_time(task),
73 SD_task_get_finish_time(task));
76 /* let throttle the communication for taskD if its parent is SD_DONE */
77 if (SD_task_get_state(taskC) == SD_DONE)
78 SD_task_set_rate(taskD, 0.5);
81 XBT_DEBUG("Destroying tasks...");
83 SD_task_destroy(taskA);
84 SD_task_destroy(taskB);
85 SD_task_destroy(taskC);
86 SD_task_destroy(taskD);
87 SD_task_destroy(taskE);
89 XBT_DEBUG("Tasks destroyed. Exiting SimDag...");