X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c8045ac09a04b52101965907399bf0f6cebfa087..028600ff598195e84323493a1f790c2df5ef3bb2:/teshsuite/simdag/basic0/basic0.c

diff --git a/teshsuite/simdag/basic0/basic0.c b/teshsuite/simdag/basic0/basic0.c
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+++ b/teshsuite/simdag/basic0/basic0.c
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+/* Copyright (c) 2007-2012, 2014-2015. The SimGrid Team.
+ * All rights reserved.                                                     */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "simgrid/simdag.h"
+#include "xbt/log.h"
+
+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)
+{
+  /* scheduling parameters */
+  double communication_amount1[] = { 0, 1e8, 0, 0 };
+  double communication_amount2[] = { 0, 1, 0, 0 };
+  const double no_cost[] = { 0.0, 0.0 };
+
+  /* initialization of SD */
+  SD_init(&argc, argv);
+
+  /* creation of the environment */
+  SD_create_environment(argv[1]);
+
+  /* creation of the tasks and their dependencies */
+  SD_task_t taskInit = SD_task_create("Init", NULL, 1.0);
+  SD_task_t taskA = SD_task_create("Task Comm 1", NULL, 1.0);
+  SD_task_t taskB = SD_task_create("Task Comm 2", NULL, 1.0);
+
+  SD_task_dependency_add(NULL, NULL, taskInit, taskA);
+  SD_task_dependency_add(NULL, NULL, taskInit, taskB);
+
+  SD_task_schedule(taskInit, 1, sg_host_list(), no_cost, no_cost, -1.0);
+  SD_task_schedule(taskA, 2, sg_host_list(), no_cost, communication_amount1, -1.0);
+  SD_task_schedule(taskB, 2, sg_host_list(), no_cost, communication_amount2, -1.0);
+
+  /* let's launch the simulation! */
+  SD_simulate(-1.0);
+  SD_task_destroy(taskInit);
+  SD_task_destroy(taskA);
+  SD_task_destroy(taskB);
+
+  XBT_INFO("Simulation time: %f", SD_get_clock());
+
+  SD_exit();
+  return 0;
+}