1 /* Copyright (c) 2007-2012. 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"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(basic1, sd, "SimDag test basic1");
14 /* Basic SimDag Test 1
16 * - Create a no-op Init task
17 * - Create two communication tasks: 1GB and 1GB
18 * - Schedule them concurrently on the two hosts of the platform
19 * The two communications occur simultaneously. They share the network for the
20 * whole duration of the simulation.
21 * Simulated time should be:
22 * 1e9/(1/2*1.25e8) + 1e-4 = 16.0001 seconds
24 int main(int argc, char **argv)
32 double communication_amount1 = 1e9;
33 double communication_amount2 = 1e9;
36 const SD_workstation_t *workstation;
38 /* initialization of SD */
41 /* creation of the environment */
42 SD_create_environment(argv[1]);
44 /* creation of the tasks and their dependencies */
45 taskInit = SD_task_create("Init", NULL, 1.0);
46 taskA = SD_task_create("Task Comm A", NULL, 1.0);
47 taskB = SD_task_create("Task Comm B", NULL, 1.0);
50 /* scheduling parameters */
53 workstation = SD_workstation_get_list();
55 /* let's launch the simulation! */
56 SD_task_schedule(taskInit, 1, SD_workstation_get_list(), &no_cost,
58 SD_task_schedule(taskA, 1, &workstation[0], &no_cost,
59 &communication_amount1, -1.0);
60 SD_task_schedule(taskB, 1, &workstation[1], &no_cost,
61 &communication_amount2, -1.0);
63 SD_task_dependency_add(NULL, NULL, taskInit, taskA);
64 SD_task_dependency_add(NULL, NULL, taskInit, taskB);
66 ret = SD_simulate(-1.0);
68 SD_task_destroy(taskA);
69 SD_task_destroy(taskB);
70 SD_task_destroy(taskInit);
72 XBT_INFO("Simulation time: %f", SD_get_clock());