add a description of the scenario and expected result

diff --git a/teshsuite/simdag/basic0.c b/teshsuite/simdag/basic0.c
index df85ce7..579b769 100644 (file)
--- a/teshsuite/simdag/basic0.c
+++ b/teshsuite/simdag/basic0.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+/* Copyright (c) 2007-2012. The SimGrid Team.

  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it


@@ -11,9 +11,20 @@
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(basic0, sd, "SimDag test basic0");
 
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(basic0, sd, "SimDag test basic0");
 

+/* Basic SimDag Test 0
+ * Scenario:
+ *   - Create a no-op Init task
+ *   - Create two communication tasks: 100MB and 1B
+ *   - Schedule them concurrently on the two hosts of the platform
+ * The two communications occur simultaneously but one is so short that it has
+ * no impact on the other.
+ * Simulated time should be:
+ *          1e8/1.25e8 + 1e-4 = 0.8001 seconds
+ * This corresponds to paying latency once and having the full bandwidth for the
+ * big message.
+ */

 int main(int argc, char **argv)
 {
 int main(int argc, char **argv)
 {

-

   SD_task_t taskInit;
   SD_task_t taskA;
   SD_task_t taskB;
   SD_task_t taskInit;
   SD_task_t taskA;
   SD_task_t taskB;


@@ -21,7 +32,7 @@ int main(int argc, char **argv)
 
   /* scheduling parameters */
 
 
   /* scheduling parameters */
 

-  double communication_amount1[] = { 0, 100000000, 0, 0 };
+  double communication_amount1[] = { 0, 1e8, 0, 0 };

   double communication_amount2[] = { 0, 1, 0, 0 };
   const double no_cost[] = { 0.0, 0.0 };
 
   double communication_amount2[] = { 0, 1, 0, 0 };
   const double no_cost[] = { 0.0, 0.0 };
 


@@ -36,9 +47,6 @@ int main(int argc, char **argv)
   taskA = SD_task_create("Task Comm 1", NULL, 1.0);
   taskB = SD_task_create("Task Comm 2", NULL, 1.0);
 
   taskA = SD_task_create("Task Comm 1", NULL, 1.0);
   taskB = SD_task_create("Task Comm 2", NULL, 1.0);
 

-
-
-

   /* let's launch the simulation! */
 
   SD_task_schedule(taskInit, 1, SD_workstation_get_list(), no_cost,
   /* let's launch the simulation! */
 
   SD_task_schedule(taskInit, 1, SD_workstation_get_list(), no_cost,