examples/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   const SD_workstation_t *workstations;
  21   const char *name1;
  22   const char *name2;
  23   double computation_amount1;
  24   double computation_amount2;
  25   double communication_amount12;
  26   double communication_amount21;
  27   const SD_link_t *route;
  28   int route_size;
  29   SD_task_t task, taskA, taskB, taskC, taskD;
  30   SD_task_t *changed_tasks;
  31   xbt_ex_t ex;
  32   const int workstation_number = 2;
  33   SD_workstation_t workstation_list[2];
  34   double computation_amount[2];
  35   double communication_amount[4] = { 0 };
  36   double rate = -1.0;
  37   SD_workstation_t w1, w2;
  38
  39   /* initialisation of SD */
  40   SD_init(&argc, argv);
  41
  42   /*  xbt_log_control_set("sd.thres=debug"); */
  43
  44   if (argc < 2) {
  45     INFO1("Usage: %s platform_file", argv[0]);
  46     INFO1("example: %s sd_platform.xml", argv[0]);
  47     exit(1);
  48   }
  49
  50   /* creation of the environment */
  51   platform_file = argv[1];
  52   SD_create_environment(platform_file);
  53
  54   /* test the estimation functions */
  55   workstations = SD_workstation_get_list();
  56   w1 = workstations[0];
  57   w2 = workstations[1];
  58   SD_workstation_set_access_mode(w2, SD_WORKSTATION_SEQUENTIAL_ACCESS);
  59   name1 = SD_workstation_get_name(w1);
  60   name2 = SD_workstation_get_name(w2);
  61   computation_amount1 = 2000000;
  62   computation_amount2 = 1000000;
  63   communication_amount12 = 2000000;
  64   communication_amount21 = 3000000;
  65   INFO3("Computation time for %f flops on %s: %f", computation_amount1, name1,
  66         SD_workstation_get_computation_time(w1, computation_amount1));
  67   INFO3("Computation time for %f flops on %s: %f", computation_amount2, name2,
  68         SD_workstation_get_computation_time(w2, computation_amount2));
  69
  70   INFO2("Route between %s and %s:", name1, name2);
  71   route = SD_route_get_list(w1, w2);
  72   route_size = SD_route_get_size(w1, w2);
  73   for (i = 0; i < route_size; i++) {
  74     INFO3("   Link %s: latency = %f, bandwidth = %f",
  75           SD_link_get_name(route[i]), SD_link_get_current_latency(route[i]),
  76           SD_link_get_current_bandwidth(route[i]));
  77   }
  78   INFO2("Route latency = %f, route bandwidth = %f",
  79         SD_route_get_current_latency(w1, w2),
  80         SD_route_get_current_bandwidth(w1, w2));
  81   INFO4("Communication time for %f bytes between %s and %s: %f",
  82         communication_amount12, name1, name2,
  83         SD_route_get_communication_time(w1, w2, communication_amount12));
  84   INFO4("Communication time for %f bytes between %s and %s: %f",
  85         communication_amount21, name2, name1,
  86         SD_route_get_communication_time(w2, w1, communication_amount21));
  87
  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);
  93
  94
  95   SD_task_dependency_add(NULL, NULL, taskB, taskA);
  96   SD_task_dependency_add(NULL, NULL, taskC, taskA);
  97   SD_task_dependency_add(NULL, NULL, taskD, taskB);
  98   SD_task_dependency_add(NULL, NULL, taskD, taskC);
  99   /*  SD_task_dependency_add(NULL, NULL, taskA, taskD); /\* deadlock */
 100
 101
 102
 103   TRY {
 104     SD_task_dependency_add(NULL, NULL, taskA, taskA);   /* shouldn't work and must raise an exception */
 105     xbt_die("Hey, I can add a dependency between Task A and Task A!");
 106   }
 107   CATCH(ex) {
 108     if (ex.category != arg_error)
 109       RETHROW;                  /* this is a serious error */
 110     xbt_ex_free(ex);
 111   }
 112
 113   TRY {
 114     SD_task_dependency_add(NULL, NULL, taskB, taskA);   /* shouldn't work and must raise an exception */
 115     xbt_die("Oh oh, I can add an already existing dependency!");
 116   }
 117   CATCH(ex) {
 118     if (ex.category != arg_error)
 119       RETHROW;
 120     xbt_ex_free(ex);
 121   }
 122
 123   TRY {
 124     SD_task_dependency_remove(taskA, taskC);    /* shouldn't work and must raise an exception */
 125     xbt_die("Dude, I can remove an unknown dependency!");
 126   }
 127   CATCH(ex) {
 128     if (ex.category != arg_error)
 129       RETHROW;
 130     xbt_ex_free(ex);
 131   }
 132
 133   TRY {
 134     SD_task_dependency_remove(taskC, taskC);    /* shouldn't work and must raise an exception */
 135     xbt_die("Wow, I can remove a dependency between Task C and itself!");
 136   }
 137   CATCH(ex) {
 138     if (ex.category != arg_error)
 139       RETHROW;
 140     xbt_ex_free(ex);
 141   }
 142
 143
 144   /* if everything is ok, no exception is forwarded or rethrown by main() */
 145
 146   /* watch points */
 147   SD_task_watch(taskD, SD_DONE);
 148   SD_task_watch(taskB, SD_DONE);
 149   SD_task_unwatch(taskD, SD_DONE);
 150
 151
 152   /* scheduling parameters */
 153   workstation_list[0] = w1;
 154   workstation_list[1] = w2;
 155   computation_amount[0] = computation_amount1;
 156   computation_amount[1] = computation_amount2;
 157
 158   communication_amount[1] = communication_amount12;
 159   communication_amount[2] = communication_amount21;
 160
 161   /* estimated time */
 162   task = taskD;
 163   INFO2("Estimated time for '%s': %f", SD_task_get_name(task),
 164         SD_task_get_execution_time(task, workstation_number, workstation_list,
 165                                    computation_amount, communication_amount));
 166
 167   /* let's launch the simulation! */
 168
 169   SD_task_schedule(taskA, workstation_number, workstation_list,
 170                    computation_amount, communication_amount, rate);
 171   SD_task_schedule(taskB, workstation_number, workstation_list,
 172                    computation_amount, communication_amount, rate);
 173   SD_task_schedule(taskC, workstation_number, workstation_list,
 174                    computation_amount, communication_amount, rate);
 175   SD_task_schedule(taskD, workstation_number, workstation_list,
 176                    computation_amount, communication_amount, rate);
 177
 178   changed_tasks = SD_simulate(-1.0);
 179   for (i = 0; changed_tasks[i] != NULL; i++) {
 180     INFO3("Task '%s' start time: %f, finish time: %f",
 181           SD_task_get_name(changed_tasks[i]),
 182           SD_task_get_start_time(changed_tasks[i]),
 183           SD_task_get_finish_time(changed_tasks[i]));
 184   }
 185
 186   xbt_assert0(changed_tasks[0] == taskD &&
 187               changed_tasks[1] == taskB &&
 188               changed_tasks[2] == NULL, "Unexpected simulation results");
 189
 190   xbt_free(changed_tasks);
 191
 192   DEBUG0("Destroying tasks...");
 193
 194   SD_task_destroy(taskA);
 195   SD_task_destroy(taskB);
 196   SD_task_destroy(taskC);
 197   SD_task_destroy(taskD);
 198
 199   DEBUG0("Tasks destroyed. Exiting SimDag...");
 200
 201   SD_exit();
 202   return 0;
 203 }