1 /* Copyright (c) 2007-2012, 2014-2015. 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 "simgrid/simdag.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(basic0, sd, "SimDag test basic0");
14 /* Basic SimDag Test 0
16 * - Create a no-op Init task
17 * - Create two communication tasks: 100MB and 1B
18 * - Schedule them concurrently on the two hosts of the platform
19 * The two communications occur simultaneously but one is so short that it has
20 * no impact on the other.
21 * Simulated time should be:
22 * 1e8/1.25e8 + 1e-4 = 0.8001 seconds
23 * This corresponds to paying latency once and having the full bandwidth for the
26 int main(int argc, char **argv)
32 /* scheduling parameters */
34 double communication_amount1[] = { 0, 1e8, 0, 0 };
35 double communication_amount2[] = { 0, 1, 0, 0 };
36 const double no_cost[] = { 0.0, 0.0 };
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 1", NULL, 1.0);
47 taskB = SD_task_create("Task Comm 2", NULL, 1.0);
49 /* let's launch the simulation! */
51 SD_task_schedule(taskInit, 1, sg_host_list(), no_cost,
53 SD_task_schedule(taskA, 2, sg_host_list(), no_cost,
54 communication_amount1, -1.0);
55 SD_task_schedule(taskB, 2, sg_host_list(), no_cost,
56 communication_amount2, -1.0);
58 SD_task_dependency_add(NULL, NULL, taskInit, taskA);
59 SD_task_dependency_add(NULL, NULL, taskInit, taskB);
62 SD_task_destroy(taskInit);
63 SD_task_destroy(taskA);
64 SD_task_destroy(taskB);
66 XBT_INFO("Simulation time: %f", SD_get_clock());