Changes between Version 11 and Version 12 of GEMINI/Tutorial/GEC17/GENI_Desktop_and_GEMINI_blipp/ExecuteExperiment

Timestamp:

07/18/13 11:13:51 (11 years ago)

Author:

kissel@cis.udel.edu

Comment:

--

GEMINI/Tutorial/GEC17/GENI_Desktop_and_GEMINI_blipp/ExecuteExperiment

@@ -51 +51 @@
 Simply specify the file on the given node where you are collecting !NetLogger log messages.  BLiPP will then check the file for new messages on the specified interval and report the collected values to the measurement store.
 
-The event type(s) for !NetLogger probes depend what is found in the log messages.  Since they are defined by the programmer, BLiPP does not know about them until it begins parsing the log file.  Once data is available, BLiPP will update the measurement information and display the event types in the drop down next to the scheduled test.  Give it a few minutes and then refresh the page.  Once the event types appear, you can select 'Graph' and display a graph of the collected measurements from the log file.
+The event type(s) for !NetLogger probes depend what is found in the log messages.  Since they are defined by the programmer, BLiPP does not know about them until it begins parsing the log file.  Once data is available, BLiPP will update the measurement information and display the event types in the drop down next to the scheduled test.  Give it a few minutes and then refresh the page.  Once the event types appear, you can select 'Graph' and display a graph of the collected measurements from the log file.  The following exercise will ask you to use !NetLogger on your experiment node and collect the measurement data with BLiPP.
 
-[[Image(chart.png, 50%)]]
+[[Image(chart.png, 20%)]]
 
 
 == __Exercise Tasks__ ==
 
-For the following exercise, if you do not have your own source code that you want to try, you can simply us the 
-following !HelloWorld.c program.
+For the following exercise, if you do not have your own source code that you want to try and instrument with !NetLogger, you can simply us the 
+following [http://groups.geni.net/geni/attachment/wiki/GEMINI/Tutorial/GEC17/GENI_Desktop_and_GEMINI_blipp/ExecuteExperiment/netlogger_test.py netlogger_test.py] program.
 
 {{{
-   main() { 
-      printf("Hello World\n"); 
-   }
+#!/usr/bin/python       
+import sys
+import logging
+import time
+import random
+from netlogger.nllog import get_logger
+from netlogger import nlapi, nllog
+
+log = nllog.get_logger(".mynamespace")
+handler = logging.StreamHandler(sys.stdout)
+log.addHandler(handler)
+log.set_meta(host=nlapi.get_host())
+log.setLevel(logging.INFO)
+
+while True:
+    log.info("random.number", VAL=random.random())
+    time.sleep(1)
 }}}