examples/simdag/sd_seq_access.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_seq_access,
  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   SD_task_t taskA, taskB, taskC, taskD;
  22
  23   /* initialization of SD */
  24   SD_init(&argc, argv);
  25
  26   /*  xbt_log_control_set("sd.thres=debug"); */
  27
  28   if (argc < 2) {
  29     XBT_INFO("Usage: %s platform_file", argv[0]);
  30     XBT_INFO("example: %s sd_platform.xml", argv[0]);
  31     exit(1);
  32   }
  33
  34   /* creation of the environment */
  35   platform_file = argv[1];
  36   SD_create_environment(platform_file);
  37
  38   /* Change the access mode of the workstations */
  39   workstations = SD_workstation_get_list();
  40   for (i = 0; i < 2; i++) {
  41     SD_workstation_dump(workstations[i]);
  42
  43     SD_workstation_set_access_mode(workstations[i],
  44                                    SD_WORKSTATION_SEQUENTIAL_ACCESS);
  45     XBT_INFO(" Change access mode of %s to %s",
  46           SD_workstation_get_name(workstations[i]),
  47           (SD_workstation_get_access_mode(workstations[i]) ==
  48            SD_WORKSTATION_SEQUENTIAL_ACCESS) ? "sequential" : "shared");
  49   }
  50   /* Well I changed my mind, I want the second workstation to be shared */
  51
  52   SD_workstation_set_access_mode(workstations[1],
  53                                      SD_WORKSTATION_SHARED_ACCESS);
  54   XBT_INFO(" Change access mode of %s to %s",
  55            SD_workstation_get_name(workstations[1]),
  56            (SD_workstation_get_access_mode(workstations[1]) ==
  57            SD_WORKSTATION_SEQUENTIAL_ACCESS) ? "sequential" : "shared");
  58
  59   /* creation of the tasks and their dependencies */
  60   taskA = SD_task_create_comp_seq("Task A", NULL, 2e10);
  61   taskB = SD_task_create_comm_e2e("Task B", NULL, 2e8);
  62   taskC = SD_task_create_comp_seq("Task C", NULL, 1e10);
  63   taskD = SD_task_create_comp_seq("Task D", NULL, 1e11);
  64
  65   SD_task_dependency_add("B->C", NULL,taskB, taskC);
  66
  67   /* watch points */
  68   SD_task_watch(taskA, SD_RUNNING);
  69   SD_task_watch(taskB, SD_RUNNING);
  70   SD_task_watch(taskC, SD_RUNNING);
  71   SD_task_watch(taskC, SD_DONE);
  72   SD_task_watch(taskD, SD_DONE);
  73
  74
  75   /* scheduling parameters */
  76   SD_task_schedulel(taskA, 1, workstations[0]);
  77   SD_task_schedulel(taskB, 2, workstations[0], workstations[1]);
  78   SD_task_schedulel(taskC, 1, workstations[1]);
  79   SD_task_schedulel(taskD, 1, workstations[1]);
  80
  81   /* let's launch the simulation! */
  82   while (!xbt_dynar_is_empty(SD_simulate(-1.0))) {
  83     XBT_INFO(" Simulation was suspended, check workstation states");
  84     for (i = 0; i < 2; i++) {
  85       SD_workstation_dump(workstations[i]);
  86     }
  87   }
  88
  89   XBT_DEBUG("Destroying tasks...");
  90
  91   SD_task_destroy(taskA);
  92   SD_task_destroy(taskB);
  93   SD_task_destroy(taskC);
  94   SD_task_destroy(taskD);
  95
  96   XBT_DEBUG("Tasks destroyed. Exiting SimDag...");
  97
  98   SD_exit();
  99   return 0;
 100 }