1 /* Copyright (c) 2006-2018. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "simgrid/s4u.hpp"
7 #include "simgrid/simdag.h"
12 XBT_LOG_NEW_DEFAULT_CATEGORY(sd_test, "Logging specific to this SimDag example");
14 int main(int argc, char **argv)
16 sg_host_t host_list[2];
17 double computation_amount[2];
18 double communication_amount[4] = { 0 };
20 /* initialization of SD */
23 xbt_assert(argc > 1, "Usage: %s platform_file\n\nExample: %s two_clusters.xml", argv[0], argv[0]);
24 SD_create_environment(argv[1]);
26 /* test the estimation functions */
27 const sg_host_t* hosts = sg_host_list();
28 simgrid::s4u::Host* h1 = hosts[4];
29 simgrid::s4u::Host* h2 = hosts[2];
30 double comp_amount1 = 2000000;
31 double comp_amount2 = 1000000;
32 double comm_amount12 = 2000000;
33 double comm_amount21 = 3000000;
34 XBT_INFO("Computation time for %f flops on %s: %f", comp_amount1, h1->get_cname(), comp_amount1 / h1->get_speed());
35 XBT_INFO("Computation time for %f flops on %s: %f", comp_amount2, h2->get_cname(), comp_amount2 / h2->get_speed());
37 XBT_INFO("Route between %s and %s:", h1->get_cname(), h2->get_cname());
38 std::vector<sg_link_t> route;
40 h1->route_to(h2, route, &latency);
42 for (auto const& link : route)
43 XBT_INFO(" Link %s: latency = %f, bandwidth = %f", sg_link_name(link), sg_link_latency(link),
44 sg_link_bandwidth(link));
46 XBT_INFO("Route latency = %f, route bandwidth = %f", latency, sg_host_route_bandwidth(h1, h2));
47 XBT_INFO("Communication time for %f bytes between %s and %s: %f", comm_amount12, h1->get_cname(), h2->get_cname(),
48 sg_host_route_latency(h1, h2) + comm_amount12 / sg_host_route_bandwidth(h1, h2));
49 XBT_INFO("Communication time for %f bytes between %s and %s: %f", comm_amount21, h2->get_cname(), h1->get_cname(),
50 sg_host_route_latency(h2, h1) + comm_amount21 / sg_host_route_bandwidth(h2, h1));
52 /* creation of the tasks and their dependencies */
53 SD_task_t taskA = SD_task_create("Task A", NULL, 10.0);
54 SD_task_t taskB = SD_task_create("Task B", NULL, 40.0);
55 SD_task_t taskC = SD_task_create("Task C", NULL, 30.0);
56 SD_task_t taskD = SD_task_create("Task D", NULL, 60.0);
58 /* try to attach and retrieve user data to a task */
59 SD_task_set_data(taskA, static_cast<void*>(&comp_amount1));
60 if (fabs(comp_amount1 - (*(static_cast<double*>(SD_task_get_data(taskA))))) > 1e-12)
61 XBT_ERROR("User data was corrupted by a simple set/get");
63 SD_task_dependency_add(taskB, taskA);
64 SD_task_dependency_add(taskC, taskA);
65 SD_task_dependency_add(taskD, taskB);
66 SD_task_dependency_add(taskD, taskC);
67 SD_task_dependency_add(taskB, taskC);
70 SD_task_dependency_add(taskA, taskA); /* shouldn't work and must raise an exception */
71 xbt_die("Hey, I can add a dependency between Task A and Task A!");
72 } catch (xbt_ex& ex) {
73 if (ex.category != arg_error)
74 throw; /* this is a serious error */
78 SD_task_dependency_add(taskB, taskA); /* shouldn't work and must raise an exception */
79 xbt_die("Oh oh, I can add an already existing dependency!");
80 } catch (xbt_ex& ex) {
81 if (ex.category != arg_error)
86 SD_task_dependency_remove(taskA, taskC); /* shouldn't work and must raise an exception */
87 xbt_die("Dude, I can remove an unknown dependency!");
88 } catch (xbt_ex& ex) {
89 if (ex.category != arg_error)
94 SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
95 xbt_die("Wow, I can remove a dependency between Task C and itself!");
96 } catch (xbt_ex& ex) {
97 if (ex.category != arg_error)
101 /* if everything is ok, no exception is forwarded or rethrown by main() */
104 SD_task_watch(taskD, SD_DONE);
105 SD_task_watch(taskB, SD_DONE);
106 SD_task_unwatch(taskD, SD_DONE);
108 /* scheduling parameters */
111 computation_amount[0] = comp_amount1;
112 computation_amount[1] = comp_amount2;
114 communication_amount[1] = comm_amount12;
115 communication_amount[2] = comm_amount21;
118 SD_task_t task = taskD;
119 XBT_INFO("Estimated time for '%s': %f", SD_task_get_name(task), SD_task_get_execution_time(task, 2, host_list,
120 computation_amount, communication_amount));
122 SD_task_schedule(taskA, 2, host_list, computation_amount, communication_amount, -1);
123 SD_task_schedule(taskB, 2, host_list, computation_amount, communication_amount, -1);
124 SD_task_schedule(taskC, 2, host_list, computation_amount, communication_amount, -1);
125 SD_task_schedule(taskD, 2, host_list, computation_amount, communication_amount, -1);
127 std::set<SD_task_t> *changed_tasks = simgrid::sd::simulate(-1.0);
128 for (auto const& task : *changed_tasks) {
129 XBT_INFO("Task '%s' start time: %f, finish time: %f", SD_task_get_name(task),
130 SD_task_get_start_time(task), SD_task_get_finish_time(task));
133 XBT_DEBUG("Destroying tasks...");
134 SD_task_destroy(taskA);
135 SD_task_destroy(taskB);
136 SD_task_destroy(taskC);
137 SD_task_destroy(taskD);
139 XBT_DEBUG("Tasks destroyed. Exiting SimDag...");
140 xbt_free((sg_host_t*)hosts);