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"
14 XBT_LOG_NEW_DEFAULT_CATEGORY(sd_test, "Logging specific to this SimDag example");
16 int main(int argc, char **argv)
18 sg_host_t host_list[2];
19 double computation_amount[2];
20 double communication_amount[4] = { 0 };
22 /* initialization of SD */
25 xbt_assert(argc > 1, "Usage: %s platform_file\n\nExample: %s two_clusters.xml", argv[0], argv[0]);
26 SD_create_environment(argv[1]);
28 /* test the estimation functions */
29 const sg_host_t* hosts = sg_host_list();
30 simgrid::s4u::Host* h1 = hosts[4];
31 simgrid::s4u::Host* h2 = hosts[2];
32 double comp_amount1 = 2000000;
33 double comp_amount2 = 1000000;
34 double comm_amount12 = 2000000;
35 double comm_amount21 = 3000000;
36 XBT_INFO("Computation time for %f flops on %s: %f", comp_amount1, h1->get_cname(), comp_amount1 / h1->getSpeed());
37 XBT_INFO("Computation time for %f flops on %s: %f", comp_amount2, h2->get_cname(), comp_amount2 / h2->getSpeed());
39 XBT_INFO("Route between %s and %s:", h1->get_cname(), h2->get_cname());
40 std::vector<sg_link_t> route;
42 h1->route_to(h2, route, &latency);
44 for (auto const& link : route)
45 XBT_INFO(" Link %s: latency = %f, bandwidth = %f", sg_link_name(link), sg_link_latency(link),
46 sg_link_bandwidth(link));
48 XBT_INFO("Route latency = %f, route bandwidth = %f", latency, sg_host_route_bandwidth(h1, h2));
49 XBT_INFO("Communication time for %f bytes between %s and %s: %f", comm_amount12, h1->get_cname(), h2->get_cname(),
50 sg_host_route_latency(h1, h2) + comm_amount12 / sg_host_route_bandwidth(h1, h2));
51 XBT_INFO("Communication time for %f bytes between %s and %s: %f", comm_amount21, h2->get_cname(), h1->get_cname(),
52 sg_host_route_latency(h2, h1) + comm_amount21 / sg_host_route_bandwidth(h2, h1));
54 /* creation of the tasks and their dependencies */
55 SD_task_t taskA = SD_task_create("Task A", NULL, 10.0);
56 SD_task_t taskB = SD_task_create("Task B", NULL, 40.0);
57 SD_task_t taskC = SD_task_create("Task C", NULL, 30.0);
58 SD_task_t taskD = SD_task_create("Task D", NULL, 60.0);
60 /* try to attach and retrieve user data to a task */
61 SD_task_set_data(taskA, static_cast<void*>(&comp_amount1));
62 if (fabs(comp_amount1 - (*(static_cast<double*>(SD_task_get_data(taskA))))) > 1e-12)
63 XBT_ERROR("User data was corrupted by a simple set/get");
65 SD_task_dependency_add(taskB, taskA);
66 SD_task_dependency_add(taskC, taskA);
67 SD_task_dependency_add(taskD, taskB);
68 SD_task_dependency_add(taskD, taskC);
69 SD_task_dependency_add(taskB, taskC);
72 SD_task_dependency_add(taskA, taskA); /* shouldn't work and must raise an exception */
73 xbt_die("Hey, I can add a dependency between Task A and Task A!");
74 } catch (xbt_ex& ex) {
75 if (ex.category != arg_error)
76 throw; /* this is a serious error */
80 SD_task_dependency_add(taskB, taskA); /* shouldn't work and must raise an exception */
81 xbt_die("Oh oh, I can add an already existing dependency!");
82 } catch (xbt_ex& ex) {
83 if (ex.category != arg_error)
88 SD_task_dependency_remove(taskA, taskC); /* shouldn't work and must raise an exception */
89 xbt_die("Dude, I can remove an unknown dependency!");
90 } catch (xbt_ex& ex) {
91 if (ex.category != arg_error)
96 SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
97 xbt_die("Wow, I can remove a dependency between Task C and itself!");
98 } catch (xbt_ex& ex) {
99 if (ex.category != arg_error)
103 /* if everything is ok, no exception is forwarded or rethrown by main() */
106 SD_task_watch(taskD, SD_DONE);
107 SD_task_watch(taskB, SD_DONE);
108 SD_task_unwatch(taskD, SD_DONE);
110 /* scheduling parameters */
113 computation_amount[0] = comp_amount1;
114 computation_amount[1] = comp_amount2;
116 communication_amount[1] = comm_amount12;
117 communication_amount[2] = comm_amount21;
120 SD_task_t task = taskD;
121 XBT_INFO("Estimated time for '%s': %f", SD_task_get_name(task), SD_task_get_execution_time(task, 2, host_list,
122 computation_amount, communication_amount));
124 SD_task_schedule(taskA, 2, host_list, computation_amount, communication_amount, -1);
125 SD_task_schedule(taskB, 2, host_list, computation_amount, communication_amount, -1);
126 SD_task_schedule(taskC, 2, host_list, computation_amount, communication_amount, -1);
127 SD_task_schedule(taskD, 2, host_list, computation_amount, communication_amount, -1);
129 std::set<SD_task_t> *changed_tasks = simgrid::sd::simulate(-1.0);
130 for (auto const& task : *changed_tasks) {
131 XBT_INFO("Task '%s' start time: %f, finish time: %f", SD_task_get_name(task),
132 SD_task_get_start_time(task), SD_task_get_finish_time(task));
135 XBT_DEBUG("Destroying tasks...");
136 SD_task_destroy(taskA);
137 SD_task_destroy(taskB);
138 SD_task_destroy(taskC);
139 SD_task_destroy(taskD);
141 XBT_DEBUG("Tasks destroyed. Exiting SimDag...");
142 xbt_free((sg_host_t*)hosts);