testsuite/simdag/sd_test.c

   1 /* Copyright (c) 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include "simdag/simdag.h"
  10 #include "xbt/ex.h"
  11 #include "xbt/log.h"
  12
  13 XBT_LOG_NEW_DEFAULT_CATEGORY(sd_test,
  14                              "Logging specific to this SimDag example");
  15
  16 int main(int argc, char **argv)
  17 {
  18   int i;
  19   const char *platform_file;
  20
  21   const SD_workstation_t *workstations;
  22   SD_workstation_t w1;
  23   SD_workstation_t w2;
  24   const char *name1;
  25   const char *name2;
  26   const double computation_amount1 = 2000000;
  27   const double computation_amount2 = 1000000;
  28   const double communication_amount12 = 2000000;
  29   const double communication_amount21 = 3000000;
  30   const SD_link_t *route;
  31   int route_size;
  32   SD_task_t taskA;
  33   SD_task_t taskB;
  34   SD_task_t taskC;
  35   SD_task_t taskD;
  36   xbt_ex_t ex;
  37
  38   /* initialisation of SD */
  39   SD_init(&argc, argv);
  40
  41   if (argc < 2) {
  42     INFO1("Usage: %s platform_file", argv[0]);
  43     INFO1("example: %s sd_platform.xml", argv[0]);
  44     exit(1);
  45   }
  46
  47   /* creation of the environment */
  48
  49   platform_file = argv[1];
  50
  51   SD_create_environment(platform_file);
  52
  53   /* test the estimation functions (use small_platform.xml) */
  54   workstations = SD_workstation_get_list();
  55   w1 = workstations[0];
  56   w2 = workstations[1];
  57   name1 = SD_workstation_get_name(w1);
  58   name2 = SD_workstation_get_name(w2);
  59   route = SD_route_get_list(w1, w2);
  60   route_size = SD_route_get_size(w1, w2);
  61   taskA = SD_task_create("Task A", NULL, 10.0);
  62   taskB = SD_task_create("Task B", NULL, 40.0);
  63   taskC = SD_task_create("Task C", NULL, 30.0);
  64   taskD = SD_task_create("Task D", NULL, 60.0);
  65
  66   INFO3("Computation time for %f flops on %s: %f", computation_amount1, name1,
  67         SD_workstation_get_computation_time(w1, computation_amount1));
  68   INFO3("Computation time for %f flops on %s: %f", computation_amount2, name2,
  69         SD_workstation_get_computation_time(w2, computation_amount2));
  70
  71   INFO2("Route between %s and %s:", name1, name2);
  72   for (i = 0; i < route_size; i++) {
  73     INFO3("\tLink %s: latency = %f, bandwidth = %f",
  74           SD_link_get_name(route[i]), SD_link_get_current_latency(route[i]),
  75           SD_link_get_current_bandwidth(route[i]));
  76   }
  77   INFO2("Route latency = %f, route bandwidth = %f",
  78         SD_route_get_current_latency(w1, w2),
  79         SD_route_get_current_bandwidth(w1, w2));
  80   INFO4("Communication time for %f bytes between %s and %s: %f",
  81         communication_amount12, name1, name2,
  82         SD_route_get_communication_time(w1, w2, communication_amount12));
  83   INFO4("Communication time for %f bytes between %s and %s: %f",
  84         communication_amount21, name2, name1,
  85         SD_route_get_communication_time(w2, w1, communication_amount21));
  86
  87   /* creation of the tasks and their dependencies */
  88
  89   SD_task_dependency_add(NULL, NULL, taskB, taskA);
  90   SD_task_dependency_add(NULL, NULL, taskC, taskA);
  91   SD_task_dependency_add(NULL, NULL, taskD, taskB);
  92   SD_task_dependency_add(NULL, NULL, taskD, taskC);
  93   /*  SD_task_dependency_add(NULL, NULL, taskA, taskD); /\* deadlock */
  94
  95   TRY {
  96     SD_task_dependency_add(NULL, NULL, taskA, taskA);   /* shouldn't work and must raise an exception */
  97     xbt_assert0(0, "Hey, I can add a dependency between Task A and Task A!");
  98   }
  99   CATCH(ex) {
 100   }
 101
 102   TRY {
 103     SD_task_dependency_add(NULL, NULL, taskA, taskB);   /* shouldn't work and must raise an exception */
 104     xbt_assert0(0, "Oh oh, I can add an already existing dependency!");
 105   }
 106   CATCH(ex) {
 107   }
 108
 109   SD_task_dependency_remove(taskA, taskB);
 110
 111   TRY {
 112     SD_task_dependency_remove(taskC, taskA);    /* shouldn't work and must raise an exception */
 113     xbt_assert0(0, "Dude, I can remove an unknown dependency!");
 114   }
 115   CATCH(ex) {
 116   }
 117
 118   TRY {
 119     SD_task_dependency_remove(taskC, taskC);    /* shouldn't work and must raise an exception */
 120     xbt_assert0(0,
 121                 "Wow, I can remove a dependency between Task C and itself!");
 122   }
 123   CATCH(ex) {
 124   }
 125
 126
 127   /* if everything is ok, no exception is forwarded or rethrown by main() */
 128
 129   /* watch points */
 130   SD_task_watch(taskD, SD_DONE);
 131   SD_task_watch(taskB, SD_DONE);
 132   SD_task_unwatch(taskD, SD_DONE);
 133
 134
 135   /* scheduling parameters */
 136   {
 137     const int workstation_number = 2;
 138     const SD_workstation_t workstation_list[] = { w1, w2 };
 139     double computation_amount[] =
 140       { computation_amount1, computation_amount2 };
 141     double communication_amount[] = {
 142       0, communication_amount12,
 143       communication_amount21, 0
 144     };
 145     SD_task_t *changed_tasks;
 146     double rate = -1.0;
 147
 148     /* estimated time */
 149     SD_task_t task = taskD;
 150     INFO2("Estimated time for '%s': %f", SD_task_get_name(task),
 151           SD_task_get_execution_time(task, workstation_number,
 152                                      workstation_list, computation_amount,
 153                                      communication_amount));
 154
 155     /* let's launch the simulation! */
 156
 157     SD_task_schedule(taskA, workstation_number, workstation_list,
 158                      computation_amount, communication_amount, rate);
 159     SD_task_schedule(taskB, workstation_number, workstation_list,
 160                      computation_amount, communication_amount, rate);
 161     SD_task_schedule(taskC, workstation_number, workstation_list,
 162                      computation_amount, communication_amount, rate);
 163     SD_task_schedule(taskD, workstation_number, workstation_list,
 164                      computation_amount, communication_amount, rate);
 165
 166     changed_tasks = SD_simulate(-1.0);
 167     xbt_assert0(changed_tasks[0] == taskD &&
 168                 changed_tasks[1] == taskC &&
 169                 changed_tasks[2] == taskB &&
 170                 changed_tasks[3] == NULL, "Unexpected simulation results");
 171
 172     xbt_free(changed_tasks);
 173   }
 174   DEBUG0("Destroying tasks...");
 175
 176   SD_task_destroy(taskA);
 177   SD_task_destroy(taskB);
 178   SD_task_destroy(taskC);
 179   SD_task_destroy(taskD);
 180
 181   DEBUG0("Tasks destroyed. Exiting SimDag...");
 182
 183   SD_exit();
 184   return 0;
 185 }