1 /* Copyright (c) 2006-2015. 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"
13 XBT_LOG_NEW_DEFAULT_CATEGORY(sd_test,
14 "Logging specific to this SimDag example");
16 int main(int argc, char **argv)
20 const char *platform_file;
21 const sg_host_t *workstations;
24 double computation_amount1;
25 double computation_amount2;
26 double communication_amount12;
27 double communication_amount21;
28 const SD_link_t *route;
30 SD_task_t task, taskA, taskB, taskC, taskD, checkB, checkD;
31 xbt_dynar_t changed_tasks;
33 const int workstation_number = 2;
34 sg_host_t workstation_list[2];
35 double computation_amount[2];
36 double communication_amount[4] = { 0 };
40 /* initialization of SD */
43 /* xbt_log_control_set("sd.thres=debug"); */
45 xbt_assert(argc > 1, "Usage: %s platform_file\n"
46 "\nExample: %s two_clusters.xml", argv[0], argv[0]);
48 /* creation of the environment */
49 platform_file = argv[1];
50 SD_create_environment(platform_file);
52 /* test the estimation functions */
53 workstations = sg_host_list();
56 name1 = sg_host_get_name(w1);
57 name2 = sg_host_get_name(w2);
58 computation_amount1 = 2000000;
59 computation_amount2 = 1000000;
60 communication_amount12 = 2000000;
61 communication_amount21 = 3000000;
62 XBT_INFO("Computation time for %f flops on %s: %f", computation_amount1,
63 name1, computation_amount1/sg_host_speed(w1));
64 XBT_INFO("Computation time for %f flops on %s: %f", computation_amount2,
65 name2, computation_amount2/sg_host_speed(w2));
67 XBT_INFO("Route between %s and %s:", name1, name2);
68 route = SD_route_get_list(w1, w2);
69 route_size = SD_route_get_size(w1, w2);
70 for (i = 0; i < route_size; i++) {
71 XBT_INFO(" Link %s: latency = %f, bandwidth = %f",
72 sg_link_name(route[i]),
73 sg_link_latency(route[i]),
74 sg_link_bandwidth(route[i]));
76 XBT_INFO("Route latency = %f, route bandwidth = %f",
77 SD_route_get_latency(w1, w2),
78 SD_route_get_bandwidth(w1, w2));
79 XBT_INFO("Communication time for %f bytes between %s and %s: %f",
80 communication_amount12, name1, name2,
81 SD_route_get_latency(w1, w2) +
82 communication_amount12 / SD_route_get_bandwidth(w1, w2));
83 XBT_INFO("Communication time for %f bytes between %s and %s: %f",
84 communication_amount21, name2, name1,
85 SD_route_get_latency(w2, w1) +
86 communication_amount21 / SD_route_get_bandwidth(w2, w1));
88 /* creation of the tasks and their dependencies */
89 taskA = SD_task_create("Task A", NULL, 10.0);
90 taskB = SD_task_create("Task B", NULL, 40.0);
91 taskC = SD_task_create("Task C", NULL, 30.0);
92 taskD = SD_task_create("Task D", NULL, 60.0);
94 /* try to attach and retrieve user data to a task */
95 SD_task_set_data(taskA, (void*) &computation_amount1);
96 if (computation_amount1 != (*((double*) SD_task_get_data(taskA))))
97 XBT_ERROR("User data was corrupted by a simple set/get");
99 SD_task_dependency_add(NULL, NULL, taskB, taskA);
100 SD_task_dependency_add(NULL, NULL, taskC, taskA);
101 SD_task_dependency_add(NULL, NULL, taskD, taskB);
102 SD_task_dependency_add(NULL, NULL, taskD, taskC);
103 SD_task_dependency_add(NULL, NULL, taskB, taskC);
108 SD_task_dependency_add(NULL, NULL, taskA, taskA); /* shouldn't work and must raise an exception */
109 xbt_die("Hey, I can add a dependency between Task A and Task A!");
112 if (ex.category != arg_error)
113 RETHROW; /* this is a serious error */
118 SD_task_dependency_add(NULL, NULL, taskB, taskA); /* shouldn't work and must raise an exception */
119 xbt_die("Oh oh, I can add an already existing dependency!");
122 if (ex.category != arg_error)
128 SD_task_dependency_remove(taskA, taskC); /* shouldn't work and must raise an exception */
129 xbt_die("Dude, I can remove an unknown dependency!");
132 if (ex.category != arg_error)
138 SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
139 xbt_die("Wow, I can remove a dependency between Task C and itself!");
142 if (ex.category != arg_error)
148 /* if everything is ok, no exception is forwarded or rethrown by main() */
151 SD_task_watch(taskD, SD_DONE);
152 SD_task_watch(taskB, SD_DONE);
153 SD_task_unwatch(taskD, SD_DONE);
156 /* scheduling parameters */
157 workstation_list[0] = w1;
158 workstation_list[1] = w2;
159 computation_amount[0] = computation_amount1;
160 computation_amount[1] = computation_amount2;
162 communication_amount[1] = communication_amount12;
163 communication_amount[2] = communication_amount21;
167 XBT_INFO("Estimated time for '%s': %f", SD_task_get_name(task),
168 SD_task_get_execution_time(task, workstation_number,
169 workstation_list, computation_amount,
170 communication_amount));
172 /* let's launch the simulation! */
174 SD_task_schedule(taskA, workstation_number, workstation_list,
175 computation_amount, communication_amount, rate);
176 SD_task_schedule(taskB, workstation_number, workstation_list,
177 computation_amount, communication_amount, rate);
178 SD_task_schedule(taskC, workstation_number, workstation_list,
179 computation_amount, communication_amount, rate);
180 SD_task_schedule(taskD, workstation_number, workstation_list,
181 computation_amount, communication_amount, rate);
183 changed_tasks = SD_simulate(-1.0);
184 xbt_dynar_foreach(changed_tasks, ctr, task) {
185 XBT_INFO("Task '%s' start time: %f, finish time: %f",
186 SD_task_get_name(task),
187 SD_task_get_start_time(task), SD_task_get_finish_time(task));
190 xbt_dynar_get_cpy(changed_tasks, 0, &checkD);
191 xbt_dynar_get_cpy(changed_tasks, 1, &checkB);
193 xbt_assert(checkD == taskD &&
194 checkB == taskB, "Unexpected simulation results");
196 XBT_DEBUG("Destroying tasks...");
198 SD_task_destroy(taskA);
199 SD_task_destroy(taskB);
200 SD_task_destroy(taskC);
201 SD_task_destroy(taskD);
203 XBT_DEBUG("Tasks destroyed. Exiting SimDag...");