examples/simdag/sd_test.c

   1 /* Copyright (c) 2006-2015. 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 "simgrid/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 sg_host_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   sg_host_t workstation_list[2];
  35   double computation_amount[2];
  36   double communication_amount[4] = { 0 };
  37   double rate = -1.0;
  38   sg_host_t w1, w2;
  39
  40   /* initialization of SD */
  41   SD_init(&argc, argv);
  42
  43   /*  xbt_log_control_set("sd.thres=debug"); */
  44
  45   xbt_assert(argc > 1, "Usage: %s platform_file\n"
  46        "\nExample: %s two_clusters.xml", argv[0], argv[0]);
  47
  48   /* creation of the environment */
  49   platform_file = argv[1];
  50   SD_create_environment(platform_file);
  51
  52   /* test the estimation functions */
  53   workstations = sg_host_list();
  54   w1 = workstations[0];
  55   w2 = workstations[1];
  56   name1 = sg_host_get_name(w1);
  57   name2 = sg_host_get_name(w2);
  58   computation_amount1 = 2000000;
  59   computation_amount2 = 1000000;
  60   communication_amount12 = 2000000;
  61   communication_amount21 = 3000000;
  62   XBT_INFO("Computation time for %f flops on %s: %f", computation_amount1,
  63         name1, computation_amount1/sg_host_speed(w1));
  64   XBT_INFO("Computation time for %f flops on %s: %f", computation_amount2,
  65         name2, computation_amount2/sg_host_speed(w2));
  66
  67   XBT_INFO("Route between %s and %s:", name1, name2);
  68   route = SD_route_get_list(w1, w2);
  69   route_size = SD_route_get_size(w1, w2);
  70   for (i = 0; i < route_size; i++) {
  71     XBT_INFO("   Link %s: latency = %f, bandwidth = %f",
  72           sg_link_name(route[i]),
  73           sg_link_latency(route[i]),
  74           sg_link_bandwidth(route[i]));
  75   }
  76   XBT_INFO("Route latency = %f, route bandwidth = %f",
  77         SD_route_get_latency(w1, w2),
  78         SD_route_get_bandwidth(w1, w2));
  79   XBT_INFO("Communication time for %f bytes between %s and %s: %f",
  80         communication_amount12, name1, name2,
  81         SD_route_get_latency(w1, w2) +
  82         communication_amount12 / SD_route_get_bandwidth(w1, w2));
  83   XBT_INFO("Communication time for %f bytes between %s and %s: %f",
  84         communication_amount21, name2, name1,
  85         SD_route_get_latency(w2, w1) +
  86         communication_amount21 / SD_route_get_bandwidth(w2, w1));
  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   /* try to attach and retrieve user data to a task */
  95   SD_task_set_data(taskA, (void*) &computation_amount1);
  96   if (computation_amount1 != (*((double*) SD_task_get_data(taskA))))
  97       XBT_ERROR("User data was corrupted by a simple set/get");
  98
  99   SD_task_dependency_add(NULL, NULL, taskB, taskA);
 100   SD_task_dependency_add(NULL, NULL, taskC, taskA);
 101   SD_task_dependency_add(NULL, NULL, taskD, taskB);
 102   SD_task_dependency_add(NULL, NULL, taskD, taskC);
 103   SD_task_dependency_add(NULL, NULL, taskB, taskC);
 104
 105
 106
 107   TRY {
 108     SD_task_dependency_add(NULL, NULL, taskA, taskA);   /* shouldn't work and must raise an exception */
 109     xbt_die("Hey, I can add a dependency between Task A and Task A!");
 110   }
 111   CATCH(ex) {
 112     if (ex.category != arg_error)
 113       RETHROW;                  /* this is a serious error */
 114     xbt_ex_free(ex);
 115   }
 116
 117   TRY {
 118     SD_task_dependency_add(NULL, NULL, taskB, taskA);   /* shouldn't work and must raise an exception */
 119     xbt_die("Oh oh, I can add an already existing dependency!");
 120   }
 121   CATCH(ex) {
 122     if (ex.category != arg_error)
 123       RETHROW;
 124     xbt_ex_free(ex);
 125   }
 126
 127   TRY {
 128     SD_task_dependency_remove(taskA, taskC);    /* shouldn't work and must raise an exception */
 129     xbt_die("Dude, I can remove an unknown dependency!");
 130   }
 131   CATCH(ex) {
 132     if (ex.category != arg_error)
 133       RETHROW;
 134     xbt_ex_free(ex);
 135   }
 136
 137   TRY {
 138     SD_task_dependency_remove(taskC, taskC);    /* shouldn't work and must raise an exception */
 139     xbt_die("Wow, I can remove a dependency between Task C and itself!");
 140   }
 141   CATCH(ex) {
 142     if (ex.category != arg_error)
 143       RETHROW;
 144     xbt_ex_free(ex);
 145   }
 146
 147
 148   /* if everything is ok, no exception is forwarded or rethrown by main() */
 149
 150   /* watch points */
 151   SD_task_watch(taskD, SD_DONE);
 152   SD_task_watch(taskB, SD_DONE);
 153   SD_task_unwatch(taskD, SD_DONE);
 154
 155
 156   /* scheduling parameters */
 157   workstation_list[0] = w1;
 158   workstation_list[1] = w2;
 159   computation_amount[0] = computation_amount1;
 160   computation_amount[1] = computation_amount2;
 161
 162   communication_amount[1] = communication_amount12;
 163   communication_amount[2] = communication_amount21;
 164
 165   /* estimated time */
 166   task = taskD;
 167   XBT_INFO("Estimated time for '%s': %f", SD_task_get_name(task),
 168         SD_task_get_execution_time(task, workstation_number,
 169                                    workstation_list, computation_amount,
 170                                    communication_amount));
 171
 172   /* let's launch the simulation! */
 173
 174   SD_task_schedule(taskA, workstation_number, workstation_list,
 175                    computation_amount, communication_amount, rate);
 176   SD_task_schedule(taskB, workstation_number, workstation_list,
 177                    computation_amount, communication_amount, rate);
 178   SD_task_schedule(taskC, workstation_number, workstation_list,
 179                    computation_amount, communication_amount, rate);
 180   SD_task_schedule(taskD, workstation_number, workstation_list,
 181                    computation_amount, communication_amount, rate);
 182
 183   changed_tasks = SD_simulate(-1.0);
 184   xbt_dynar_foreach(changed_tasks, ctr, task) {
 185     XBT_INFO("Task '%s' start time: %f, finish time: %f",
 186           SD_task_get_name(task),
 187           SD_task_get_start_time(task), SD_task_get_finish_time(task));
 188   }
 189
 190   xbt_dynar_get_cpy(changed_tasks, 0, &checkD);
 191   xbt_dynar_get_cpy(changed_tasks, 1, &checkB);
 192
 193   xbt_assert(checkD == taskD &&
 194               checkB == taskB, "Unexpected simulation results");
 195
 196   XBT_DEBUG("Destroying tasks...");
 197
 198   SD_task_destroy(taskA);
 199   SD_task_destroy(taskB);
 200   SD_task_destroy(taskC);
 201   SD_task_destroy(taskD);
 202
 203   XBT_DEBUG("Tasks destroyed. Exiting SimDag...");
 204
 205   SD_exit();
 206   return 0;
 207 }