[Halld-offline] Offline Software Meeting Minutes, April 17, 2013

[Mark M. Ito]

Find the minutes below and at 
https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_April_17,_2013 
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GlueX Offline Meeting, April 17, 2013
Minutes

    Present:
      * IU: Kei Moriya
      * CMU: Will Levine, Paul Mattione, Curtis Meyer
      * FSU: Nathan Sparks
      * JLab: Mark Ito (chair), David Lawrence, Elliott Wolin
      * MIT: Justin Stevens
      * UConn: Alex Barnes

Announcements

      * Mark announced that that we are sneaking up on making JANA 0.6.6
        the official version. There have been problems getting a successful
        nightly build having nothing to do with the new version of JANA.
      * Elliott told us that there is a fully C++11-compliant version of
        gcc installed on the JLab CUE.
      * Elliott announced that, in his opinion, scons rules...

Standard ROOT TTree Format: TTree Format

    Paul walked us through his ideas for a standard ROOT Tree format for
    GlueX post-reconstruction analysis. See [26]his wiki page for details.
    From the first section of that page:
      * For any reaction can streamline (and provide a best-practices
        implementation/examples of): analysis utilities, BDT setup/input,
        amplitude analysis setup/input(?)
      * Makes it easy for users to keep everything organized, especially
        handling of the combinatoric background.
      * Output can be enabled/disabled with a single flag.
      * Format is designed to be one-size-fits-all, but is still extensible
        (customizable).

    He noted that ROOT 5.32 or greater will be required to use this system.

    A design goal is to support both direct access to variables vie
    TTree::Draw() and support an object-oriented programming approach to
    analysis under ROOT. He has had email exchanges with several
    collaborators to help refine his ideas.

Action Item Review

    We discussed a couple of newly added issues in [27]Mantis
      * Add thread-specific random number generators to mcsmear:
        reproducibility of results is not guaranteed when running mcsmear
        multi-threaded due to use a single random number generator,
        [28]Issue 329.
      * sim-recon soft-wired for KLOE: the choice of reconstruction
        algorithm is done via a generic JANA configuration parameter rather
        than using the factory tag choice scheme, [29]Issue 328
           + Will noted if this change is made then analysis of data
             challenge 1 data will require the DEFTAG parameter on the
             command line or in the configuration file.

Review of recent repository activity

      * David [30]added an option to smear the beam particle momentum in
        genr8_2_hddm.
      * David implemented [31]the change to geant particle numbers
        discussed on the email list.

    Retrieved from
"https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_April_17,_2013"

References

   26. https://halldweb1.jlab.org/wiki/index.php/Analysis_TTreeFormat
   27. https://halldweb1.jlab.org/mantisbt
   28. https://halldweb1.jlab.org/mantisbt/view.php?id=329
   29. https://halldweb1.jlab.org/mantisbt/view.php?id=328
   30. 
http://clasweb.jlab.org/websvn/prod/listing.php?repname=GlueX&path=%2Ftrunk%2Fsim-recon%2F&rev=10677&sc=1
   31. 
http://clasweb.jlab.org/websvn/prod/listing.php?repname=GlueX&path=%2Ftrunk%2Fsim-recon%2F&rev=10659&sc=1

-- 
Mark M. Ito, Jefferson Lab, marki at jlab.org, (757)269-5295