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   const char * platform_file;
  13   const SD_workstation_t *workstations;
  14   const char *name1;
  15   const char *name2;
  16   double computation_amount1;
  17   double computation_amount2;
  18   double communication_amount12;
  19   double communication_amount21;
  20   const SD_link_t *route;
  21   int route_size;
  22   SD_task_t task, taskA, taskB, taskC, taskD;
  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   /* test the estimation functions */
  48   workstations = SD_workstation_get_list();
  49   w1 = workstations[0];
  50   w2 = workstations[1];
  51   SD_workstation_set_access_mode(w2, SD_WORKSTATION_SEQUENTIAL_ACCESS);
  52   name1 = SD_workstation_get_name(w1);
  53   name2 = SD_workstation_get_name(w2);
  54   computation_amount1 = 2000000;
  55   computation_amount2 = 1000000;
  56   communication_amount12 = 2000000;
  57   communication_amount21 = 3000000;
  58   INFO3("Computation time for %f flops on %s: %f", computation_amount1, name1,
  59         SD_workstation_get_computation_time(w1, computation_amount1));
  60   INFO3("Computation time for %f flops on %s: %f", computation_amount2, name2,
  61         SD_workstation_get_computation_time(w2, computation_amount2));
  62
  63   INFO2("Route between %s and %s:", name1, name2);
  64   route = SD_route_get_list(w1, w2);
  65   route_size = SD_route_get_size(w1, w2);
  66   for (i = 0; i < route_size; i++) {
  67     INFO3("\tLink %s: latency = %f, bandwidth = %f", SD_link_get_name(route[i]),
  68           SD_link_get_current_latency(route[i]), SD_link_get_current_bandwidth(route[i]));
  69   }
  70   INFO2("Route latency = %f, route bandwidth = %f", SD_route_get_current_latency(w1, w2),
  71         SD_route_get_current_bandwidth(w1, w2));
  72   INFO4("Communication time for %f bytes between %s and %s: %f", communication_amount12, name1, name2,
  73         SD_route_get_communication_time(w1, w2, communication_amount12));
  74   INFO4("Communication time for %f bytes between %s and %s: %f", communication_amount21, name2, name1,
  75         SD_route_get_communication_time(w2, w1, communication_amount21));
  76
  77   /* creation of the tasks and their dependencies */
  78   taskA = SD_task_create("Task A", NULL, 10.0);
  79   taskB = SD_task_create("Task B", NULL, 40.0);
  80   taskC = SD_task_create("Task C", NULL, 30.0);
  81   taskD = SD_task_create("Task D", NULL, 60.0);
  82
  83
  84   SD_task_dependency_add(NULL, NULL, taskB, taskA);
  85   SD_task_dependency_add(NULL, NULL, taskC, taskA);
  86   SD_task_dependency_add(NULL, NULL, taskD, taskB);
  87   SD_task_dependency_add(NULL, NULL, taskD, taskC);
  88   /*  SD_task_dependency_add(NULL, NULL, taskA, taskD); /\* deadlock */
  89
  90
  91
  92   TRY {
  93     SD_task_dependency_add(NULL, NULL, taskA, taskA); /* shouldn't work and must raise an exception */
  94     xbt_die("Hey, I can add a dependency between Task A and Task A!");
  95   }
  96   CATCH (ex) {
  97     if (ex.category != arg_error)
  98       RETHROW; /* this is a serious error */
  99     xbt_ex_free(ex);
 100   }
 101
 102   TRY {
 103     SD_task_dependency_add(NULL, NULL, taskB, taskA); /* shouldn't work and must raise an exception */
 104     xbt_die("Oh oh, I can add an already existing dependency!");
 105   }
 106   CATCH (ex) {
 107     if (ex.category != arg_error)
 108       RETHROW;
 109     xbt_ex_free(ex);
 110   }
 111
 112   TRY {
 113     SD_task_dependency_remove(taskA, taskC); /* shouldn't work and must raise an exception */
 114     xbt_die("Dude, I can remove an unknown dependency!");
 115   }
 116   CATCH (ex) {
 117     if (ex.category != arg_error)
 118       RETHROW;
 119     xbt_ex_free(ex);
 120   }
 121
 122   TRY {
 123     SD_task_dependency_remove(taskC, taskC); /* shouldn't work and must raise an exception */
 124     xbt_die("Wow, I can remove a dependency between Task C and itself!");
 125   }
 126   CATCH (ex) {
 127     if (ex.category != arg_error)
 128       RETHROW;
 129     xbt_ex_free(ex);
 130   }
 131
 132
 133   /* if everything is ok, no exception is forwarded or rethrown by main() */
 134
 135   /* watch points */
 136   SD_task_watch(taskD, SD_DONE);
 137   SD_task_watch(taskB, SD_DONE);
 138   SD_task_unwatch(taskD, SD_DONE);
 139
 140
 141   /* scheduling parameters */
 142   workstation_list[0] = w1;
 143   workstation_list[1] = w2;
 144   computation_amount[0] = computation_amount1;
 145   computation_amount[1] = computation_amount2;
 146
 147   communication_amount[1] = communication_amount12;
 148   communication_amount[2] = communication_amount21;
 149
 150   /* estimated time */
 151   task = taskD;
 152   INFO2("Estimated time for '%s': %f", SD_task_get_name(task),
 153         SD_task_get_execution_time(task, workstation_number, workstation_list,
 154                                    computation_amount, communication_amount, rate));
 155
 156   /* let's launch the simulation! */
 157
 158   SD_task_schedule(taskA, workstation_number, workstation_list,
 159                    computation_amount, communication_amount, rate);
 160   SD_task_schedule(taskB, workstation_number, workstation_list,
 161                    computation_amount, communication_amount, rate);
 162   SD_task_schedule(taskC, workstation_number, workstation_list,
 163                    computation_amount, communication_amount, rate);
 164   SD_task_schedule(taskD, workstation_number, workstation_list,
 165                    computation_amount, communication_amount, rate);
 166
 167   changed_tasks = SD_simulate(-1.0);
 168   for (i = 0; changed_tasks[i] != NULL; i++) {
 169     INFO3("Task '%s' start time: %f, finish time: %f",
 170           SD_task_get_name(changed_tasks[i]),
 171           SD_task_get_start_time(changed_tasks[i]),
 172           SD_task_get_finish_time(changed_tasks[i]));
 173   }
 174
 175   xbt_assert0(changed_tasks[0] == taskD &&
 176               changed_tasks[1] == taskB &&
 177               changed_tasks[2] == NULL,
 178               "Unexpected simulation results");
 179
 180   xbt_free(changed_tasks);
 181
 182   DEBUG0("Destroying tasks...");
 183
 184   SD_task_destroy(taskA);
 185   SD_task_destroy(taskB);
 186   SD_task_destroy(taskC);
 187   SD_task_destroy(taskD);
 188
 189   DEBUG0("Tasks destroyed. Exiting SimDag...");
 190
 191   SD_exit();
 192   return 0;
 193 }
 194