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   int i;
  12
  13   /* initialisation of SD */
  14   SD_init(&argc, argv);
  15
  16   /*  xbt_log_control_set("sd.thres=debug"); */
  17
  18   if (argc < 2) {
  19     INFO1("Usage: %s platform_file", argv[0]);
  20     INFO1("example: %s sd_platform.xml", argv[0]);
  21     exit(1);
  22   }
  23
  24   /* creation of the environment */
  25   const char * platform_file = argv[1];
  26   SD_create_environment(platform_file);
  27
  28   /* test the estimation functions */
  29   const SD_workstation_t *workstations = SD_workstation_get_list();
  30   SD_workstation_t w1 = workstations[0];
  31   SD_workstation_t w2 = workstations[1];
  32   SD_workstation_set_access_mode(w2, SD_WORKSTATION_SEQUENTIAL_ACCESS);
  33   const char *name1 = SD_workstation_get_name(w1);
  34   const char *name2 = SD_workstation_get_name(w2);
  35   const double computation_amount1 = 2000000;
  36   const double computation_amount2 = 1000000;
  37   const double communication_amount12 = 2000000;
  38   const double communication_amount21 = 3000000;
  39   INFO3("Computation time for %f flops on %s: %f", computation_amount1, name1,
  40         SD_workstation_get_computation_time(w1, computation_amount1));
  41   INFO3("Computation time for %f flops on %s: %f", computation_amount2, name2,
  42         SD_workstation_get_computation_time(w2, computation_amount2));
  43
  44   INFO2("Route between %s and %s:", name1, name2);
  45   const SD_link_t *route = SD_route_get_list(w1, w2);
  46   int route_size = SD_route_get_size(w1, w2);
  47   for (i = 0; i < route_size; i++) {
  48     INFO3("\tLink %s: latency = %f, bandwidth = %f", SD_link_get_name(route[i]),
  49           SD_link_get_current_latency(route[i]), SD_link_get_current_bandwidth(route[i]));
  50   }
  51   INFO2("Route latency = %f, route bandwidth = %f", SD_route_get_current_latency(w1, w2),
  52         SD_route_get_current_bandwidth(w1, w2));
  53   INFO4("Communication time for %f bytes between %s and %s: %f", communication_amount12, name1, name2,
  54         SD_route_get_communication_time(w1, w2, communication_amount12));
  55   INFO4("Communication time for %f bytes between %s and %s: %f", communication_amount21, name2, name1,
  56         SD_route_get_communication_time(w2, w1, communication_amount21));
  57
  58   /* creation of the tasks and their dependencies */
  59   SD_task_t taskA = SD_task_create("Task A", NULL, 10.0);
  60   SD_task_t taskB = SD_task_create("Task B", NULL, 40.0);
  61   SD_task_t taskC = SD_task_create("Task C", NULL, 30.0);
  62   SD_task_t taskD = SD_task_create("Task D", NULL, 60.0);
  63
  64
  65   SD_task_dependency_add(NULL, NULL, taskB, taskA);
  66   SD_task_dependency_add(NULL, NULL, taskC, taskA);
  67   SD_task_dependency_add(NULL, NULL, taskD, taskB);
  68   SD_task_dependency_add(NULL, NULL, taskD, taskC);
  69   /*  SD_task_dependency_add(NULL, NULL, taskA, taskD); /\* deadlock */
  70
  71   xbt_ex_t ex;
  72
  73   TRY {
  74     SD_task_dependency_add(NULL, NULL, taskA, taskA); /* shouldn't work and must raise an exception */
  75     xbt_die("Hey, I can add a dependency between Task A and Task A!");
  76   }
  77   CATCH (ex) {
  78     if (ex.category != arg_error)
  79       RETHROW; /* this is a serious error */
  80     xbt_ex_free(ex);
  81   }
  82
  83   TRY {
  84     SD_task_dependency_add(NULL, NULL, taskB, taskA); /* shouldn't work and must raise an exception */
  85     xbt_die("Oh oh, I can add an already existing dependency!");
  86   }
  87   CATCH (ex) {
  88     if (ex.category != arg_error)
  89       RETHROW;
  90     xbt_ex_free(ex);
  91   }
  92
  93   TRY {
  94     SD_task_dependency_remove(taskA, taskC); /* shouldn't work and must raise an exception */
  95     xbt_die("Dude, I can remove an unknown dependency!");
  96   }
  97   CATCH (ex) {
  98     if (ex.category != arg_error)
  99       RETHROW;
 100     xbt_ex_free(ex);
 101   }
 102
 103   TRY {
 104     SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
 105     xbt_die("Wow, I can remove a dependency between Task C and itself!");
 106   }
 107   CATCH (ex) {
 108     if (ex.category != arg_error)
 109       RETHROW;
 110     xbt_ex_free(ex);
 111   }
 112
 113
 114   /* if everything is ok, no exception is forwarded or rethrown by main() */
 115
 116   /* watch points */
 117   SD_task_watch(taskD, SD_DONE);
 118   SD_task_watch(taskB, SD_DONE);
 119   SD_task_unwatch(taskD, SD_DONE);
 120
 121
 122   /* scheduling parameters */
 123
 124   const int workstation_number = 2;
 125   const SD_workstation_t workstation_list[] = {w1, w2};
 126   double computation_amount[] = {computation_amount1, computation_amount2};
 127   double communication_amount[] =
 128     {
 129       0, communication_amount12,
 130       communication_amount21, 0
 131     };
 132   double rate = -1.0;
 133
 134   /* estimated time */
 135   SD_task_t task = taskD;
 136   INFO2("Estimated time for '%s': %f", SD_task_get_name(task),
 137         SD_task_get_execution_time(task, workstation_number, workstation_list,
 138                                    computation_amount, communication_amount, rate));
 139
 140   /* let's launch the simulation! */
 141
 142   SD_task_schedule(taskA, workstation_number, workstation_list,
 143                    computation_amount, communication_amount, rate);
 144   SD_task_schedule(taskB, workstation_number, workstation_list,
 145                    computation_amount, communication_amount, rate);
 146   SD_task_schedule(taskC, workstation_number, workstation_list,
 147                    computation_amount, communication_amount, rate);
 148   SD_task_schedule(taskD, workstation_number, workstation_list,
 149                    computation_amount, communication_amount, rate);
 150
 151   SD_task_t *changed_tasks;
 152
 153   changed_tasks = SD_simulate(-1.0);
 154   for (i = 0; changed_tasks[i] != NULL; i++) {
 155     INFO3("Task '%s' start time: %f, finish time: %f",
 156           SD_task_get_name(changed_tasks[i]),
 157           SD_task_get_start_time(changed_tasks[i]),
 158           SD_task_get_finish_time(changed_tasks[i]));
 159   }
 160
 161   xbt_assert0(changed_tasks[0] == taskD &&
 162               changed_tasks[1] == taskB &&
 163               changed_tasks[2] == NULL,
 164               "Unexpected simulation results");
 165
 166   xbt_free(changed_tasks);
 167
 168   DEBUG0("Destroying tasks...");
 169
 170   SD_task_destroy(taskA);
 171   SD_task_destroy(taskB);
 172   SD_task_destroy(taskC);
 173   SD_task_destroy(taskD);
 174
 175   DEBUG0("Tasks destroyed. Exiting SimDag...");
 176
 177   SD_exit();
 178   return 0;
 179 }
 180