examples/simdag/sd_test.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include "simdag/simdag.h"
   4 #include "xbt/ex.h"
   5 #include "xbt/log.h"
   6
   7 XBT_LOG_NEW_DEFAULT_CATEGORY(sd_test,
   8                              "Logging specific to this SimDag example");
   9
  10 int main(int argc, char **argv)
  11 {
  12   int i;
  13   const char *platform_file;
  14   const SD_workstation_t *workstations;
  15   const char *name1;
  16   const char *name2;
  17   double computation_amount1;
  18   double computation_amount2;
  19   double communication_amount12;
  20   double communication_amount21;
  21   const SD_link_t *route;
  22   int route_size;
  23   SD_task_t task, taskA, taskB, taskC, taskD;
  24   SD_task_t *changed_tasks;
  25   xbt_ex_t ex;
  26   const int workstation_number = 2;
  27   SD_workstation_t workstation_list[2];
  28   double computation_amount[2];
  29   double communication_amount[4] = { 0 };
  30   double rate = -1.0;
  31   SD_workstation_t w1, w2;
  32
  33   /* initialisation of SD */
  34   SD_init(&argc, argv);
  35
  36   /*  xbt_log_control_set("sd.thres=debug"); */
  37
  38   if (argc < 2) {
  39     INFO1("Usage: %s platform_file", argv[0]);
  40     INFO1("example: %s sd_platform.xml", argv[0]);
  41     exit(1);
  42   }
  43
  44   /* creation of the environment */
  45   platform_file = argv[1];
  46   SD_create_environment(platform_file);
  47
  48   /* test the estimation functions */
  49   workstations = SD_workstation_get_list();
  50   w1 = workstations[0];
  51   w2 = workstations[1];
  52   SD_workstation_set_access_mode(w2, SD_WORKSTATION_SEQUENTIAL_ACCESS);
  53   name1 = SD_workstation_get_name(w1);
  54   name2 = SD_workstation_get_name(w2);
  55   computation_amount1 = 2000000;
  56   computation_amount2 = 1000000;
  57   communication_amount12 = 2000000;
  58   communication_amount21 = 3000000;
  59   INFO3("Computation time for %f flops on %s: %f", computation_amount1, name1,
  60         SD_workstation_get_computation_time(w1, computation_amount1));
  61   INFO3("Computation time for %f flops on %s: %f", computation_amount2, name2,
  62         SD_workstation_get_computation_time(w2, computation_amount2));
  63
  64   INFO2("Route between %s and %s:", name1, name2);
  65   route = SD_route_get_list(w1, w2);
  66   route_size = SD_route_get_size(w1, w2);
  67   for (i = 0; i < route_size; i++) {
  68     INFO3("   Link %s: latency = %f, bandwidth = %f",
  69           SD_link_get_name(route[i]), SD_link_get_current_latency(route[i]),
  70           SD_link_get_current_bandwidth(route[i]));
  71   }
  72   INFO2("Route latency = %f, route bandwidth = %f",
  73         SD_route_get_current_latency(w1, w2),
  74         SD_route_get_current_bandwidth(w1, w2));
  75   INFO4("Communication time for %f bytes between %s and %s: %f",
  76         communication_amount12, name1, name2,
  77         SD_route_get_communication_time(w1, w2, communication_amount12));
  78   INFO4("Communication time for %f bytes between %s and %s: %f",
  79         communication_amount21, name2, name1,
  80         SD_route_get_communication_time(w2, w1, communication_amount21));
  81
  82   /* creation of the tasks and their dependencies */
  83   taskA = SD_task_create("Task A", NULL, 10.0);
  84   taskB = SD_task_create("Task B", NULL, 40.0);
  85   taskC = SD_task_create("Task C", NULL, 30.0);
  86   taskD = SD_task_create("Task D", NULL, 60.0);
  87
  88
  89   SD_task_dependency_add(NULL, NULL, taskB, taskA);
  90   SD_task_dependency_add(NULL, NULL, taskC, taskA);
  91   SD_task_dependency_add(NULL, NULL, taskD, taskB);
  92   SD_task_dependency_add(NULL, NULL, taskD, taskC);
  93   /*  SD_task_dependency_add(NULL, NULL, taskA, taskD); /\* deadlock */
  94
  95
  96
  97   TRY {
  98     SD_task_dependency_add(NULL, NULL, taskA, taskA);   /* shouldn't work and must raise an exception */
  99     xbt_die("Hey, I can add a dependency between Task A and Task A!");
 100   }
 101   CATCH(ex) {
 102     if (ex.category != arg_error)
 103       RETHROW;                  /* this is a serious error */
 104     xbt_ex_free(ex);
 105   }
 106
 107   TRY {
 108     SD_task_dependency_add(NULL, NULL, taskB, taskA);   /* shouldn't work and must raise an exception */
 109     xbt_die("Oh oh, I can add an already existing dependency!");
 110   }
 111   CATCH(ex) {
 112     if (ex.category != arg_error)
 113       RETHROW;
 114     xbt_ex_free(ex);
 115   }
 116
 117   TRY {
 118     SD_task_dependency_remove(taskA, taskC);    /* shouldn't work and must raise an exception */
 119     xbt_die("Dude, I can remove an unknown 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(taskC, taskC);    /* shouldn't work and must raise an exception */
 129     xbt_die("Wow, I can remove a dependency between Task C and itself!");
 130   }
 131   CATCH(ex) {
 132     if (ex.category != arg_error)
 133       RETHROW;
 134     xbt_ex_free(ex);
 135   }
 136
 137
 138   /* if everything is ok, no exception is forwarded or rethrown by main() */
 139
 140   /* watch points */
 141   SD_task_watch(taskD, SD_DONE);
 142   SD_task_watch(taskB, SD_DONE);
 143   SD_task_unwatch(taskD, SD_DONE);
 144
 145
 146   /* scheduling parameters */
 147   workstation_list[0] = w1;
 148   workstation_list[1] = w2;
 149   computation_amount[0] = computation_amount1;
 150   computation_amount[1] = computation_amount2;
 151
 152   communication_amount[1] = communication_amount12;
 153   communication_amount[2] = communication_amount21;
 154
 155   /* estimated time */
 156   task = taskD;
 157   INFO2("Estimated time for '%s': %f", SD_task_get_name(task),
 158         SD_task_get_execution_time(task, workstation_number, workstation_list,
 159                                    computation_amount, communication_amount,
 160                                    rate));
 161
 162   /* let's launch the simulation! */
 163
 164   SD_task_schedule(taskA, workstation_number, workstation_list,
 165                    computation_amount, communication_amount, rate);
 166   SD_task_schedule(taskB, workstation_number, workstation_list,
 167                    computation_amount, communication_amount, rate);
 168   SD_task_schedule(taskC, workstation_number, workstation_list,
 169                    computation_amount, communication_amount, rate);
 170   SD_task_schedule(taskD, workstation_number, workstation_list,
 171                    computation_amount, communication_amount, rate);
 172
 173   changed_tasks = SD_simulate(-1.0);
 174   for (i = 0; changed_tasks[i] != NULL; i++) {
 175     INFO3("Task '%s' start time: %f, finish time: %f",
 176           SD_task_get_name(changed_tasks[i]),
 177           SD_task_get_start_time(changed_tasks[i]),
 178           SD_task_get_finish_time(changed_tasks[i]));
 179   }
 180
 181   xbt_assert0(changed_tasks[0] == taskD &&
 182               changed_tasks[1] == taskB &&
 183               changed_tasks[2] == NULL, "Unexpected simulation results");
 184
 185   xbt_free(changed_tasks);
 186
 187   DEBUG0("Destroying tasks...");
 188
 189   SD_task_destroy(taskA);
 190   SD_task_destroy(taskB);
 191   SD_task_destroy(taskC);
 192   SD_task_destroy(taskD);
 193
 194   DEBUG0("Tasks destroyed. Exiting SimDag...");
 195
 196   SD_exit();
 197   return 0;
 198 }