testsuite/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   char * platform_file = argv[1];
  24   SD_create_environment(platform_file);
  25
  26   /* test the estimation functions (use small_platform.xml) */
  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   const SD_link_t *route = SD_route_get_list(w1, w2);
  37   int route_size = SD_route_get_size(w1, w2);
  38   SD_task_t taskA = SD_task_create("Task A", NULL, 10.0);
  39   SD_task_t taskB = SD_task_create("Task B", NULL, 40.0);
  40   SD_task_t taskC = SD_task_create("Task C", NULL, 30.0);
  41   SD_task_t taskD = SD_task_create("Task D", NULL, 60.0);
  42   xbt_ex_t ex;
  43
  44   INFO3("Computation time for %f flops on %s: %f", computation_amount1, name1,
  45         SD_workstation_get_computation_time(w1, computation_amount1));
  46   INFO3("Computation time for %f flops on %s: %f", computation_amount2, name2,
  47         SD_workstation_get_computation_time(w2, computation_amount2));
  48
  49   INFO2("Route between %s and %s:", name1, name2);
  50   for (i = 0; i < route_size; i++) {
  51     INFO3("\tLink %s: latency = %f, bandwidth = %f", SD_link_get_name(route[i]),
  52           SD_link_get_current_latency(route[i]), SD_link_get_current_bandwidth(route[i]));
  53   }
  54   INFO2("Route latency = %f, route bandwidth = %f", SD_route_get_current_latency(w1, w2),
  55         SD_route_get_current_bandwidth(w1, w2));
  56   INFO4("Communication time for %f bytes between %s and %s: %f", communication_amount12, name1, name2,
  57         SD_route_get_communication_time(w1, w2, communication_amount12));
  58   INFO4("Communication time for %f bytes between %s and %s: %f", communication_amount21, name2, name1,
  59         SD_route_get_communication_time(w2, w1, communication_amount21));
  60
  61   /* creation of the tasks and their dependencies */
  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   TRY {
  70     SD_task_dependency_add(NULL, NULL, taskA, taskA); /* shouldn't work and must raise an exception */
  71     xbt_assert0(0, "Hey, I can add a dependency between Task A and Task A!");
  72   }
  73   CATCH (ex) {
  74   }
  75
  76   TRY {
  77     SD_task_dependency_add(NULL, NULL, taskA, taskB); /* shouldn't work and must raise an exception */
  78     xbt_assert0(0, "Oh oh, I can add an already existing dependency!");
  79   }
  80   CATCH (ex) {
  81   }
  82
  83   SD_task_dependency_remove(taskA, taskB);
  84
  85   TRY {
  86     SD_task_dependency_remove(taskC, taskA); /* shouldn't work and must raise an exception */
  87     xbt_assert0(0, "Dude, I can remove an unknown dependency!");
  88   }
  89   CATCH (ex) {
  90   }
  91
  92   TRY {
  93     SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
  94     xbt_assert0(0, "Wow, I can remove a dependency between Task C and itself!");
  95   }
  96   CATCH (ex) {
  97   }
  98
  99
 100   /* if everything is ok, no exception is forwarded or rethrown by main() */
 101
 102   /* watch points */
 103   SD_task_watch(taskD, SD_DONE);
 104   SD_task_watch(taskB, SD_DONE);
 105   SD_task_unwatch(taskD, SD_DONE);
 106
 107
 108   /* scheduling parameters */
 109   {
 110     const int workstation_number = 2;
 111     const SD_workstation_t workstation_list[] = {w1, w2};
 112     double computation_amount[] = {computation_amount1, computation_amount2};
 113     double communication_amount[] =
 114       {
 115         0, communication_amount12,
 116         communication_amount21, 0
 117       };
 118     SD_task_t *changed_tasks;
 119     double rate = -1.0;
 120
 121     /* estimated time */
 122     SD_task_t task = taskD;
 123     INFO2("Estimated time for '%s': %f", SD_task_get_name(task),
 124           SD_task_get_execution_time(task, workstation_number, workstation_list,
 125                                      computation_amount, communication_amount, rate));
 126
 127     /* let's launch the simulation! */
 128
 129     SD_task_schedule(taskA, workstation_number, workstation_list,
 130                      computation_amount, communication_amount, rate);
 131     SD_task_schedule(taskB, workstation_number, workstation_list,
 132                      computation_amount, communication_amount, rate);
 133     SD_task_schedule(taskC, workstation_number, workstation_list,
 134                      computation_amount, communication_amount, rate);
 135     SD_task_schedule(taskD, workstation_number, workstation_list,
 136                      computation_amount, communication_amount, rate);
 137
 138     changed_tasks = SD_simulate(-1.0);
 139     xbt_assert0(changed_tasks[0] == taskD &&
 140                 changed_tasks[1] == taskB &&
 141                 changed_tasks[2] == taskC &&
 142                 changed_tasks[3] == NULL,
 143                 "Unexpected simulation results");
 144
 145     xbt_free(changed_tasks);
 146   }
 147   DEBUG0("Destroying tasks...");
 148
 149   SD_task_destroy(taskA);
 150   SD_task_destroy(taskB);
 151   SD_task_destroy(taskC);
 152   SD_task_destroy(taskD);
 153
 154   DEBUG0("Tasks destroyed. Exiting SimDag...");
 155
 156   SD_exit();
 157   return 0;
 158 }
 159