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   xbt_dynar_t changed_tasks;
  24   SD_workstation_t workstation_list[2];
  25   double computation_amount[2];
  26   double communication_amount[4] = { 0 };
  27   double rate = -1.0;
  28   SD_workstation_t w1, w2;
  29
  30   /* initialisation of SD */
  31   SD_init(&argc, argv);
  32
  33   /*  xbt_log_control_set("sd.thres=debug"); */
  34
  35   if (argc < 2) {
  36     INFO1("Usage: %s platform_file", argv[0]);
  37     INFO1("example: %s sd_platform.xml", argv[0]);
  38     exit(1);
  39   }
  40
  41   /* creation of the environment */
  42   platform_file = argv[1];
  43   SD_create_environment(platform_file);
  44
  45   /* Change the access mode of the workstations */
  46   workstations = SD_workstation_get_list();
  47   w1 = workstations[0];
  48   w2 = workstations[1];
  49   for (i = 0; i < 2; i++) {
  50     SD_workstation_set_access_mode(workstations[i],
  51                                    SD_WORKSTATION_SEQUENTIAL_ACCESS);
  52     INFO2("Access mode of %s is %s",
  53           SD_workstation_get_name(workstations[i]),
  54           (SD_workstation_get_access_mode(workstations[i]) ==
  55            SD_WORKSTATION_SEQUENTIAL_ACCESS) ? "sequential" : "shared");
  56   }
  57
  58   /* creation of the tasks and their dependencies */
  59   taskA = SD_task_create_comp_seq("Task A", NULL, 2e9);
  60   taskB = SD_task_create_comm_e2e("Task B", NULL, 2e9);
  61   taskC = SD_task_create_comp_seq("Task C", NULL, 1e9);
  62
  63   /* if everything is ok, no exception is forwarded or rethrown by main() */
  64
  65   /* watch points */
  66   SD_task_watch(taskA, SD_RUNNING);
  67   SD_task_watch(taskB, SD_RUNNING);
  68   SD_task_watch(taskC, SD_RUNNING);
  69   SD_task_watch(taskC, SD_DONE);
  70
  71
  72   /* scheduling parameters */
  73   workstation_list[0] = w1;
  74   workstation_list[1] = w2;
  75   computation_amount[0] = SD_task_get_amount(taskA);
  76   computation_amount[1] = SD_task_get_amount(taskB);
  77
  78   communication_amount[1] = SD_task_get_amount(taskC);
  79   communication_amount[2] = 0.0;
  80
  81   SD_task_schedule(taskA, 1, &w1,
  82                    &(computation_amount[0]), SD_SCHED_NO_COST, rate);
  83   SD_task_schedule(taskB, 2, workstation_list,
  84                    SD_SCHED_NO_COST, communication_amount, rate);
  85   SD_task_schedule(taskC, 1, &w1,
  86                    &(computation_amount[1]), SD_SCHED_NO_COST, rate);
  87
  88   /* let's launch the simulation! */
  89   while (xbt_dynar_length(changed_tasks = SD_simulate(-1.0)) > 0) {
  90     for (i = 0; i < 2; i++) {
  91       task = SD_workstation_get_current_task(workstations[i]);
  92       if (task)
  93         kind = SD_task_get_kind(task);
  94       else {
  95         INFO1("There is no task running on %s",
  96               SD_workstation_get_name(workstations[i]));
  97         continue;
  98       }
  99
 100       switch (kind) {
 101       case SD_TASK_COMP_SEQ:
 102         INFO2("%s is currently running on %s (SD_TASK_COMP_SEQ)",
 103               SD_task_get_name(task),
 104               SD_workstation_get_name(workstations[i]));
 105         break;
 106       case SD_TASK_COMM_E2E:
 107         INFO2("%s is currently running on %s (SD_TASK_COMM_E2E)",
 108               SD_task_get_name(task),
 109               SD_workstation_get_name(workstations[i]));
 110         break;
 111       case SD_TASK_NOT_TYPED:
 112         INFO1("Task running on %s has no type",
 113               SD_workstation_get_name(workstations[i]));
 114         break;
 115       default:
 116         ERROR0("Shouldn't be here");
 117       }
 118     }
 119     xbt_dynar_free_container(&changed_tasks);
 120   }
 121
 122   DEBUG0("Destroying tasks...");
 123
 124   SD_task_destroy(taskA);
 125   SD_task_destroy(taskB);
 126   SD_task_destroy(taskC);
 127
 128   DEBUG0("Tasks destroyed. Exiting SimDag...");
 129
 130   SD_exit();
 131   return 0;
 132 }