examples/simdag/sd_test.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include "simdag/simdag.h"
   4 #include "xbt/ex.h"
   5 #include "xbt/log.h"
   6
   7 XBT_LOG_NEW_DEFAULT_CATEGORY(sd_test,
   8                              "Logging specific to this SimDag example");
   9
  10 int main(int argc, char **argv) {
  11   int i;
  12
  13   /* initialisation of SD */
  14   SD_init(&argc, argv);
  15
  16   if (argc < 2) {
  17     INFO1("Usage: %s platform_file", argv[0]);
  18     INFO1("example: %s sd_platform.xml", argv[0]);
  19     exit(1);
  20   }
  21
  22   /* creation of the environment */
  23   const char * platform_file = argv[1];
  24   SD_create_environment(platform_file);
  25
  26   /* test the estimation functions */
  27   const SD_workstation_t *workstations = SD_workstation_get_list();
  28   SD_workstation_t w1 = workstations[0];
  29   SD_workstation_t w2 = workstations[1];
  30   const char *name1 = SD_workstation_get_name(w1);
  31   const char *name2 = SD_workstation_get_name(w2);
  32   const double computation_amount1 = 2000000;
  33   const double computation_amount2 = 1000000;
  34   const double communication_amount12 = 2000000;
  35   const double communication_amount21 = 3000000;
  36   INFO3("Computation time for %f flops on %s: %f", computation_amount1, name1,
  37         SD_workstation_get_computation_time(w1, computation_amount1));
  38   INFO3("Computation time for %f flops on %s: %f", computation_amount2, name2,
  39         SD_workstation_get_computation_time(w2, computation_amount2));
  40
  41   INFO2("Route between %s and %s:", name1, name2);
  42   SD_link_t *route = SD_route_get_list(w1, w2);
  43   int route_size = SD_route_get_size(w1, w2);
  44   for (i = 0; i < route_size; i++) {
  45     INFO3("\tLink %s: latency = %f, bandwidth = %f", SD_link_get_name(route[i]),
  46           SD_link_get_current_latency(route[i]), SD_link_get_current_bandwidth(route[i]));
  47   }
  48   INFO2("Route latency = %f, route bandwidth = %f", SD_route_get_current_latency(w1, w2),
  49         SD_route_get_current_bandwidth(w1, w2));
  50   INFO4("Communication time for %f bytes between %s and %s: %f", communication_amount12, name1, name2,
  51         SD_route_get_communication_time(w1, w2, communication_amount12));
  52   INFO4("Communication time for %f bytes between %s and %s: %f", communication_amount21, name2, name1,
  53         SD_route_get_communication_time(w2, w1, communication_amount21));
  54   xbt_free(route);
  55
  56   /* creation of the tasks and their dependencies */
  57   SD_task_t taskA = SD_task_create("Task A", NULL, 10.0);
  58   SD_task_t taskB = SD_task_create("Task B", NULL, 40.0);
  59   SD_task_t taskC = SD_task_create("Task C", NULL, 30.0);
  60   SD_task_t taskD = SD_task_create("Task D", NULL, 60.0);
  61
  62
  63   SD_task_dependency_add(NULL, NULL, taskB, taskA);
  64   SD_task_dependency_add(NULL, NULL, taskC, taskA);
  65   SD_task_dependency_add(NULL, NULL, taskD, taskB);
  66   SD_task_dependency_add(NULL, NULL, taskD, taskC);
  67   /*  SD_task_dependency_add(NULL, NULL, taskA, taskD); /\* deadlock */
  68
  69   xbt_ex_t ex;
  70
  71   TRY {
  72     SD_task_dependency_add(NULL, NULL, taskA, taskA); /* shouldn't work and must raise an exception */
  73     xbt_assert0(0, "Hey, I can add a dependency between Task A and Task A!");
  74   }
  75   CATCH (ex) {
  76     xbt_ex_free(ex);
  77   }
  78
  79   TRY {
  80     SD_task_dependency_add(NULL, NULL, taskA, taskB); /* shouldn't work and must raise an exception */
  81     xbt_assert0(0, "Oh oh, I can add an already existing dependency!");
  82   }
  83   CATCH (ex) {
  84     xbt_ex_free(ex);
  85   }
  86
  87   SD_task_dependency_remove(taskA, taskB);
  88
  89   TRY {
  90     SD_task_dependency_remove(taskC, taskA); /* shouldn't work and must raise an exception */
  91     xbt_assert0(0, "Dude, I can remove an unknown dependency!");
  92   }
  93   CATCH (ex) {
  94     xbt_ex_free(ex);
  95   }
  96
  97   TRY {
  98     SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
  99     xbt_assert0(0, "Wow, I can remove a dependency between Task C and itself!");
 100   }
 101   CATCH (ex) {
 102     xbt_ex_free(ex);
 103   }
 104
 105
 106   /* if everything is ok, no exception is forwarded or rethrown by main() */
 107
 108   /* watch points */
 109   SD_task_watch(taskD, SD_DONE);
 110   SD_task_watch(taskB, SD_DONE);
 111   SD_task_unwatch(taskD, SD_DONE);
 112
 113
 114   /* scheduling parameters */
 115
 116   const int workstation_number = 2;
 117   const SD_workstation_t workstation_list[] = {w1, w2};
 118   double computation_amount[] = {computation_amount1, computation_amount2};
 119   double communication_amount[] =
 120     {
 121       0, communication_amount12,
 122       communication_amount21, 0
 123     };
 124   double rate = -1.0;
 125
 126   /* estimated time */
 127   SD_task_t task = taskD;
 128   INFO2("Estimated time for '%s': %f", SD_task_get_name(task),
 129         SD_task_get_execution_time(task, workstation_number, workstation_list,
 130                                    computation_amount, communication_amount, rate));
 131
 132   /* let's launch the simulation! */
 133
 134   SD_task_schedule(taskA, workstation_number, workstation_list,
 135                    computation_amount, communication_amount, rate);
 136   SD_task_schedule(taskB, workstation_number, workstation_list,
 137                    computation_amount, communication_amount, rate);
 138   SD_task_schedule(taskC, workstation_number, workstation_list,
 139                    computation_amount, communication_amount, rate);
 140   SD_task_schedule(taskD, workstation_number, workstation_list,
 141                    computation_amount, communication_amount, rate);
 142
 143   SD_task_t *changed_tasks;
 144
 145   changed_tasks = SD_simulate(-1.0);
 146   xbt_assert0(changed_tasks[0] == taskD &&
 147               changed_tasks[1] == taskB &&
 148               changed_tasks[2] == taskC &&
 149               changed_tasks[3] == NULL,
 150               "Unexpected simulation results");
 151
 152   for (i = 0; changed_tasks[i] != NULL; i++) {
 153     INFO3("Task '%s' start time: %f, finish time: %f",
 154           SD_task_get_name(changed_tasks[i]),
 155           SD_task_get_start_time(changed_tasks[i]),
 156           SD_task_get_finish_time(changed_tasks[i]));
 157   }
 158
 159   xbt_free(changed_tasks);
 160
 161   DEBUG0("Destroying tasks...");
 162
 163   SD_task_destroy(taskA);
 164   SD_task_destroy(taskB);
 165   SD_task_destroy(taskC);
 166   SD_task_destroy(taskD);
 167
 168   DEBUG0("Tasks destroyed. Exiting SimDag...");
 169
 170   SD_exit();
 171   return 0;
 172 }
 173