Changes between Version 15 and Version 16 of GEMINI/Tutorial/GEC17/GENI_Desktop_and_GEMINI_blipp/ExecuteExperiment


Ignore:
Timestamp:
07/18/13 11:41:13 (11 years ago)
Author:
kissel@cis.udel.edu
Comment:

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  • GEMINI/Tutorial/GEC17/GENI_Desktop_and_GEMINI_blipp/ExecuteExperiment

    v15 v16  
    4242!NetLogger is a set of software tools that can be used to log application events and perform analysis and debugging of the collected log data.  The python netlogger tools and libraries are installed on your slice nodes by default with GEMINI.  More details and software can be obtained from the !NetLogger website [[http://netlogger.lbl.gov/]]
    4343
    44 An application instrumented with !NetLogger can output log messages to a file in a standardized format.  BLiPP has a netlogger probe that can parse this log file and report the measurements to the measurement store on your global node.  In this way, measurement data collected from experiments in your slice will be in the same format as the other GEMINI measurements.  This also means they are accessible in a common location and also archived to iRODS along with any other measurements collected through the GEMINI system.
     44An application instrumented with !NetLogger can output log messages to a file in a standardized format.  BLiPP has a netlogger probe that can parse this log file and report the measurements to the measurement store on your global node.  In this way, measurement data collected from experiments in your slice will be in the same format as the other GEMINI measurements.  This also means they are accessible in a common location and will be archived to iRODS along with any other measurements collected through the GEMINI system.
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    4646To configure a !NetLogger probe, you simply add another BLiPP test as shown below.
    … …  
    4949----
    5050
    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.
     51Specify 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.
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    53 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.
     53The event type(s) for !NetLogger probes depend on 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.
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    5555[[Image(chart.png, 20%)]]