Changes between Version 2 and Version 3 of Tutorial/HowToAppPrototype

Timestamp:

Dec 5, 2007, 5:12:41 AM (18 years ago)

Author:

thierry

Comment:

—

Tutorial/HowToAppPrototype

@@ -161 +161 @@
 === Step 3: The Experiment Script ===
 
-This experiment is given in the attached script [attachment:a a]. 
-
-This file contains extensive comments that should help you understand the different steps involved in running an application on the nodes of a testbed.
+In this step, we describe the experiment script that demonstrates the use of the above two prototypes.
+
+This experiment involves an ad-hoc network of two group of nodes, each containing a single node. The first group "firstWorker" contains node [1,1], which will use the "gentlePing" prototype/application to assert that it can reach node [1,2]. The second group "secondWorker" contains node [1,2], which will use the "agressivePing" prototype/application to get a coarse estimate of the packet drop rate on its link to node [1,1].
+
+The following code should be saved into a file "tut_app_3.rb" in the same directory as the above application and prototype definitions:
+{{{
+# Define the first group
+# The node(s) within this group will run the "gentlePing" prototype/application
+#
+defGroup('firstWorker', [1,1]) {|node|
+
+   # Associate the prototype to use with this group
+   # and configure any eventual parameters
+   #
+   node.prototype("gentlePing", {
+     'destination' => "192.168.0.2"
+   })
+
+   # Configure the wireless interface on the node(s) in this set
+   node.net.w0.mode = "ad-hoc"
+   node.net.w0.type = "g"
+   node.net.w0.essid = "tutorial"
+   node.net.w0.ip = "192.168.0.1"
+}
+
+# Define the second group
+# The node(s) within this group will run the "aggressivePing" prototype/application
+#
+defGroup('secondWorker', [1,2]) {|node|
+
+   # Here we decide that the default 1000 probes are not enough in our case
+   # and we give a specific value of 4000 to the 'numPacket' parameter of 
+   # the "aggressivePing" prototype
+   #
+   node.prototype("aggressivePing", {
+     'destination' => "192.168.0.1",
+     'numPacket' => 4000
+   })
+
+   # Configure the wireless interface on the node(s) in this set
+   node.net.w0.mode = "ad-hoc"
+   node.net.w0.type = "g"
+   node.net.w0.essid = "tutorial"
+   node.net.w0.ip = "192.168.0.2"
+}
+
+# When all the applications on all the nodes in this experiment are ready
+#
+whenAllInstalled() {|node|
+
+   # Wait 10 sec to make sure that the wireless interfaces are all 
+   # configured
+   wait 10
+
+   # Start all the applications
+   allGroups.startApplications
+
+   # Wait 10 sec, this will be the experiment duration time
+   wait 10
+
+   # Stop the experiment
+   Experiment.done
+}
+
+}}}
+
+=== Final Step! ===
 
 To run this example script, use the following command:
 
  {{{
-  orbit exec tut_app_1
+  orbit exec tut_app_3
  }}}
 
 === The Results ===
 
-The experiment screen output should then look like [attachment:a this]. And the experiment log file should look like  [attachment:a this].
+The experiment screen output should then look like [attachment:sb5_2007_12_04_22_44_34-Output.txt this]. And the experiment log file should look like  [attachment:sb5_2007_12_04_22_44_34.log this].
 
 === More... ===