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   unsigned int ctr;
  20   const char *platform_file;
  21   const SD_workstation_t *workstations;
  22   const char *name1;
  23   const char *name2;
  24   double computation_amount1;
  25   double computation_amount2;
  26   double communication_amount12;
  27   double communication_amount21;
  28   const SD_link_t *route;
  29   int route_size;
  30   SD_task_t task, taskA, taskB, taskC, taskD, checkB, checkD;
  31   xbt_dynar_t changed_tasks;
  32   xbt_ex_t ex;
  33   const int workstation_number = 2;
  34   SD_workstation_t workstation_list[2];
  35   double computation_amount[2];
  36   double communication_amount[4] = { 0 };
  37   double rate = -1.0;
  38   SD_workstation_t w1, w2;
  39
  40   /* initialization of SD */
  41   SD_init(&argc, argv);
  42
  43   /*  xbt_log_control_set("sd.thres=debug"); */
  44
  45   if (argc < 2) {
  46     INFO1("Usage: %s platform_file", argv[0]);
  47     INFO1("example: %s sd_platform.xml", argv[0]);
  48     exit(1);
  49   }
  50
  51   /* creation of the environment */
  52   platform_file = argv[1];
  53   SD_create_environment(platform_file);
  54
  55   /* test the estimation functions */
  56   workstations = SD_workstation_get_list();
  57   w1 = workstations[0];
  58   w2 = workstations[1];
  59   SD_workstation_set_access_mode(w2, SD_WORKSTATION_SEQUENTIAL_ACCESS);
  60   name1 = SD_workstation_get_name(w1);
  61   name2 = SD_workstation_get_name(w2);
  62   computation_amount1 = 2000000;
  63   computation_amount2 = 1000000;
  64   communication_amount12 = 2000000;
  65   communication_amount21 = 3000000;
  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   route = SD_route_get_list(w1, w2);
  73   route_size = SD_route_get_size(w1, w2);
  74   for (i = 0; i < route_size; i++) {
  75     INFO3("   Link %s: latency = %f, bandwidth = %f",
  76           SD_link_get_name(route[i]), SD_link_get_current_latency(route[i]),
  77           SD_link_get_current_bandwidth(route[i]));
  78   }
  79   INFO2("Route latency = %f, route bandwidth = %f",
  80         SD_route_get_current_latency(w1, w2),
  81         SD_route_get_current_bandwidth(w1, w2));
  82   INFO4("Communication time for %f bytes between %s and %s: %f",
  83         communication_amount12, name1, name2,
  84         SD_route_get_communication_time(w1, w2, communication_amount12));
  85   INFO4("Communication time for %f bytes between %s and %s: %f",
  86         communication_amount21, name2, name1,
  87         SD_route_get_communication_time(w2, w1, communication_amount21));
  88
  89   /* creation of the tasks and their dependencies */
  90   taskA = SD_task_create("Task A", NULL, 10.0);
  91   taskB = SD_task_create("Task B", NULL, 40.0);
  92   taskC = SD_task_create("Task C", NULL, 30.0);
  93   taskD = SD_task_create("Task D", NULL, 60.0);
  94
  95
  96   SD_task_dependency_add(NULL, NULL, taskB, taskA);
  97   SD_task_dependency_add(NULL, NULL, taskC, taskA);
  98   SD_task_dependency_add(NULL, NULL, taskD, taskB);
  99   SD_task_dependency_add(NULL, NULL, taskD, taskC);
 100   /*  SD_task_dependency_add(NULL, NULL, taskA, taskD); /\* deadlock */
 101
 102
 103
 104   TRY {
 105     SD_task_dependency_add(NULL, NULL, taskA, taskA);   /* shouldn't work and must raise an exception */
 106     xbt_die("Hey, I can add a dependency between Task A and Task A!");
 107   }
 108   CATCH(ex) {
 109     if (ex.category != arg_error)
 110       RETHROW;                  /* this is a serious error */
 111     xbt_ex_free(ex);
 112   }
 113
 114   TRY {
 115     SD_task_dependency_add(NULL, NULL, taskB, taskA);   /* shouldn't work and must raise an exception */
 116     xbt_die("Oh oh, I can add an already existing dependency!");
 117   }
 118   CATCH(ex) {
 119     if (ex.category != arg_error)
 120       RETHROW;
 121     xbt_ex_free(ex);
 122   }
 123
 124   TRY {
 125     SD_task_dependency_remove(taskA, taskC);    /* shouldn't work and must raise an exception */
 126     xbt_die("Dude, I can remove an unknown dependency!");
 127   }
 128   CATCH(ex) {
 129     if (ex.category != arg_error)
 130       RETHROW;
 131     xbt_ex_free(ex);
 132   }
 133
 134   TRY {
 135     SD_task_dependency_remove(taskC, taskC);    /* shouldn't work and must raise an exception */
 136     xbt_die("Wow, I can remove a dependency between Task C and itself!");
 137   }
 138   CATCH(ex) {
 139     if (ex.category != arg_error)
 140       RETHROW;
 141     xbt_ex_free(ex);
 142   }
 143
 144
 145   /* if everything is ok, no exception is forwarded or rethrown by main() */
 146
 147   /* watch points */
 148   SD_task_watch(taskD, SD_DONE);
 149   SD_task_watch(taskB, SD_DONE);
 150   SD_task_unwatch(taskD, SD_DONE);
 151
 152
 153   /* scheduling parameters */
 154   workstation_list[0] = w1;
 155   workstation_list[1] = w2;
 156   computation_amount[0] = computation_amount1;
 157   computation_amount[1] = computation_amount2;
 158
 159   communication_amount[1] = communication_amount12;
 160   communication_amount[2] = communication_amount21;
 161
 162   /* estimated time */
 163   task = taskD;
 164   INFO2("Estimated time for '%s': %f", SD_task_get_name(task),
 165         SD_task_get_execution_time(task, workstation_number, workstation_list,
 166                                    computation_amount, communication_amount));
 167
 168   /* let's launch the simulation! */
 169
 170   SD_task_schedule(taskA, workstation_number, workstation_list,
 171                    computation_amount, communication_amount, rate);
 172   SD_task_schedule(taskB, workstation_number, workstation_list,
 173                    computation_amount, communication_amount, rate);
 174   SD_task_schedule(taskC, workstation_number, workstation_list,
 175                    computation_amount, communication_amount, rate);
 176   SD_task_schedule(taskD, workstation_number, workstation_list,
 177                    computation_amount, communication_amount, rate);
 178
 179   changed_tasks = SD_simulate(-1.0);
 180   xbt_dynar_foreach(changed_tasks, ctr, task){
 181                   INFO3("Task '%s' start time: %f, finish time: %f",
 182           SD_task_get_name(task),
 183           SD_task_get_start_time(task),
 184           SD_task_get_finish_time(task));
 185   }
 186
 187   xbt_dynar_get_cpy(changed_tasks, 0, &checkD);
 188   xbt_dynar_get_cpy(changed_tasks, 1, &checkB);
 189
 190   xbt_assert0(checkD == taskD &&
 191               checkB == taskB, "Unexpected simulation results");
 192
 193   xbt_dynar_free_container(&changed_tasks);
 194
 195   DEBUG0("Destroying tasks...");
 196
 197   SD_task_destroy(taskA);
 198   SD_task_destroy(taskB);
 199   SD_task_destroy(taskC);
 200   SD_task_destroy(taskD);
 201
 202   DEBUG0("Tasks destroyed. Exiting SimDag...");
 203
 204   SD_exit();
 205   return 0;
 206 }