examples/simdag/sd_seq_access.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_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   int kind;
  22   SD_task_t task, taskA, taskB, taskC;
  23   SD_task_t *changed_tasks;
  24   xbt_ex_t ex;
  25   const int workstation_number = 2;
  26   SD_workstation_t workstation_list[2];
  27   double computation_amount[2];
  28   double communication_amount[4] = { 0 };
  29   double rate = -1.0;
  30   SD_workstation_t w1, w2;
  31
  32   /* initialisation of SD */
  33   SD_init(&argc, argv);
  34
  35   /*  xbt_log_control_set("sd.thres=debug"); */
  36
  37   if (argc < 2) {
  38     INFO1("Usage: %s platform_file", argv[0]);
  39     INFO1("example: %s sd_platform.xml", argv[0]);
  40     exit(1);
  41   }
  42
  43   /* creation of the environment */
  44   platform_file = argv[1];
  45   SD_create_environment(platform_file);
  46
  47   /* Change the access mode of the workstations */
  48   workstations = SD_workstation_get_list();
  49   w1 = workstations[0];
  50   w2 = workstations[1];
  51   for(i=0;i<2; i++){
  52     SD_workstation_set_access_mode(workstations[i],
  53                                    SD_WORKSTATION_SEQUENTIAL_ACCESS);
  54     INFO2("Access mode of %s is %s",
  55           SD_workstation_get_name(workstations[i]),
  56           (SD_workstation_get_access_mode(workstations[i]) ==
  57            SD_WORKSTATION_SEQUENTIAL_ACCESS) ? "sequential" : "shared");
  58   }
  59
  60   /* creation of the tasks and their dependencies */
  61   taskA = SD_task_create_comp_seq("Task A", NULL, 2e9);
  62   taskB = SD_task_create_comm_e2e("Task B", NULL, 2e9);
  63   taskC = SD_task_create_comp_seq("Task C", NULL, 1e9);
  64
  65   /* if everything is ok, no exception is forwarded or rethrown by main() */
  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
  73
  74   /* scheduling parameters */
  75   workstation_list[0] = w1;
  76   workstation_list[1] = w2;
  77   computation_amount[0] = SD_task_get_amount(taskA);
  78   computation_amount[1] = SD_task_get_amount(taskB);
  79
  80   communication_amount[1] = SD_task_get_amount(taskC);
  81   communication_amount[2] = 0.0;
  82
  83   SD_task_schedule(taskA, 1, &w1,
  84                    &(computation_amount[0]), SD_SCHED_NO_COST, rate);
  85   SD_task_schedule(taskB, 2, workstation_list,
  86                    SD_SCHED_NO_COST, communication_amount, rate);
  87   SD_task_schedule(taskC, 1, &w1,
  88                    &(computation_amount[1]), SD_SCHED_NO_COST, rate);
  89
  90   /* let's launch the simulation! */
  91   while(*(changed_tasks = SD_simulate(-1.0))){
  92     for(i=0;i<2; i++){
  93       task = SD_workstation_get_current_task(workstations[i]);
  94       if (task)
  95         kind = SD_task_get_kind(task);
  96       else{
  97         INFO1("There is no task running on %s",
  98               SD_workstation_get_name(workstations[i]));
  99         continue;
 100       }
 101
 102       switch (kind){
 103       case SD_TASK_COMP_SEQ:
 104         INFO2("%s is currently running on %s (SD_TASK_COMP_SEQ)",
 105               SD_task_get_name(task),
 106               SD_workstation_get_name(workstations[i]));
 107         break;
 108       case SD_TASK_COMM_E2E:
 109         INFO2("%s is currently running on %s (SD_TASK_COMM_E2E)",
 110               SD_task_get_name(task),
 111               SD_workstation_get_name(workstations[i]));
 112         break;
 113       case SD_TASK_NOT_TYPED:
 114         INFO1("Task running on %s has no type",
 115               SD_workstation_get_name(workstations[i]));
 116         break;
 117       default:
 118         ERROR0("Shouldn't be here");
 119       }
 120     }
 121     xbt_free(changed_tasks);
 122   }
 123
 124   DEBUG0("Destroying tasks...");
 125
 126   SD_task_destroy(taskA);
 127   SD_task_destroy(taskB);
 128   SD_task_destroy(taskC);
 129
 130   DEBUG0("Tasks destroyed. Exiting SimDag...");
 131
 132   SD_exit();
 133   return 0;
 134 }