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. */
7 #include "simgrid/simdag.h"
10 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(basic1, sd, "SimDag test basic1");
12 /* Basic SimDag Test 1
14 * - Create a no-op Init task
15 * - Create two communication tasks: 1GB and 1GB
16 * - Schedule them concurrently on the two hosts of the platform
17 * The two communications occur simultaneously. They share the network for the
18 * whole duration of the simulation.
19 * Simulated time should be:
20 * 1e9/(1/2*1.25e8) + 1e-4 = 16.0001 seconds
22 int main(int argc, char **argv)
25 /* initialization of SD */
28 /* creation of the environment */
29 SD_create_environment(argv[1]);
30 /* scheduling parameters */
31 double communication_amount1 = xbt_str_parse_double(argv[2], "Invalid communication size: %s");
32 double communication_amount2 = xbt_str_parse_double(argv[3], "Invalid communication size: %s");
34 /* creation of the tasks and their dependencies */
35 SD_task_t taskInit = SD_task_create("Init", NULL, 1.0);
36 SD_task_t taskA = SD_task_create("Task Comm A", NULL, 1.0);
37 SD_task_t taskB = SD_task_create("Task Comm B", NULL, 1.0);
39 SD_task_dependency_add(NULL, NULL, taskInit, taskA);
40 SD_task_dependency_add(NULL, NULL, taskInit, taskB);
42 sg_host_t *hosts = sg_host_list();
43 SD_task_schedule(taskInit, 1, hosts, SD_SCHED_NO_COST, SD_SCHED_NO_COST, -1.0);
44 SD_task_schedule(taskA, 1, &hosts[0], SD_SCHED_NO_COST, &communication_amount1, -1.0);
45 SD_task_schedule(taskB, 1, &hosts[1], SD_SCHED_NO_COST, &communication_amount2, -1.0);
48 /* let's launch the simulation! */
50 SD_task_destroy(taskA);
51 SD_task_destroy(taskB);
52 SD_task_destroy(taskInit);
54 XBT_INFO("Simulation time: %f", SD_get_clock());