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GAE CMS Analysis (Example). Michael Thomas ( thomas@hep.caltech.edu ) (on behalf of the GAE group). Outline. Prepare Code. Collect Results. GAE Analysis. Submit. Monitor. Prepare ORCA Job. Install xcmsi to prepare for local CMS software installation

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GAE CMS Analysis (Example)

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Gae cms analysis example l.jpg

GAE CMS Analysis(Example)

Michael Thomas (thomas@hep.caltech.edu)

(on behalf of the GAE group)

Korea Workshop May 2005


Outline l.jpg

Outline

Prepare Code

Collect Results

GAE Analysis

Submit

Monitor

Korea Workshop May 2005


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Prepare ORCA Job

  • Install xcmsi to prepare for local CMS software installation

    • http://cmsdoc.cern.ch/cms/oo/repos_standalone/download/download.sh

  • Install ORCA using xcmsi

    • ./xcmsi.pl

    • Select packages to install

  • Write and compile the ORCA application

    • cd to ORCA workspace

    • Look at ExRunEvent.cpp in ORCA/src/Workspace as an example

    • More info on using ORCA: http://cmsdoc.cern.ch/orca/

Korea Workshop May 2005


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Submit Job

  • Describe job in Job Description Language (Chimera DAX)

  • Submit job to Grid Scheduler (Sphinx)

  • Sphinx submits job and subtasks to remote sites

  • Use Sphinx job id to monitor job

Korea Workshop May 2005


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Describe Job in JDL

  • Chimera DAX: http://www.griphyn.org/chimera/dax-1.6.xsd

  • Other Job Description Languages being investigated

  • JDL contains

    • Input and output logical filenames

    • Tasks (commands) to be executed

    • Dependency between Tasks represented as a DAG

    • Pointer to application data (ORCA shared libraries, .orcarc)

Korea Workshop May 2005


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Submit Job to Scheduler

  • Use client tool to submit to Sphinx

  • Web Service interface provides flexibility for clients

    • Sphinx client application

    • CRAB

    • Web Browser

  • Sphinx returns a Grid Job Id

Korea Workshop May 2005


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Sphinx manages job submission

  • Sphinx locates available resources based on policy information

    • Cpu

    • Input data

    • Network resources

  • Submit job to remote site via BOSS

Korea Workshop May 2005


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Monitor Progress

  • Lifelines give immediate feedback on all job status

  • BOSS Job Monitoring

  • MonALISA Monitoring

Korea Workshop May 2005


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Job Lifeline

Korea Workshop May 2005


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BOSS Job Monitoring

Korea Workshop May 2005


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MonALISA Job Monitoring

  • Correlate Lifelines with remote system status

Korea Workshop May 2005


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Collect Results

  • When job is finished, use Logical File Result and Dataset Catalog to obtain result data

  • CAVES used for version control on ROOT session

    • Allows sharing analysis code between users and groups

  • ROOT display for visualization of results

Korea Workshop May 2005


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CAVES code management

Korea Workshop May 2005


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View Results

Pz,Px,Py plot of Higgs -> WW

Korea Workshop May 2005


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View Results

Korea Workshop May 2005


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