[Halld-offline] Minutes, GlueX Offline Software Meeting, June 29, 2011

[Mark M. Ito]

Folks,

Find the minutes at 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_June_29%2C_2011#Minutes 
and below.

My notes on the rawevent plug-in left something to be desired. 
Corrections solicited.

   -- Mark

   ==

GlueX Offline Meeting, June 29, 2011

Minutes

    Present:
      * CMU: Will Levine, Curtis Meyer
      * IU: Kei Moriya, Matt Shepherd
      * JLab: Eugene Chudakov, Hovanes Egiyan, Mark Ito (chair), David
        Lawrence, Paul Mattione, Dmitry Romanov, Simon Taylor, Carl Timmer,
        Beni Zihlmann


Announcements

      * Status of alpha release of CCDB. Dmitry worked on this during the
        calibration and conditions database (CCDB) during his last visit
        and is picking it up again. Right now he is working on the first
        alpha release.
           + The low-level API is done.
           + The make system is done.
           + JANA integration is not ready.
           + The user-level API is not ready
           + Goal for release: user-level API, but not Jana integration

      Elliott commented that CLAS12 is interested. They would like to code
      to be kept in the 12-GeV repository. We will try to oblige. Dave
      will look into off-site collaborators checking out from the 12 GeV
      repository.

      * Geant4 Tutorial. Sucheta Jawalkar of the Users Group Board of
        Directors brought up the idea of having another [33]Geant4 Tutorial
        at JLab. Mark contacted Paul Gueye and Paul is willing to organize
        it from the Lab's side again. If you are interested in helping,
        please contact [34]Mark.
      * danaevio and rawevent plugins, translation tables. Elliott gave us
        a heads-up about two new plug-ins.
           + danaevio plug-in. This plug-in takes raw hit objects and
             reconstructed objects and generates an EVIO tree that includes
             representation of those objects. The tree can be serialized,
             can be sent as a message, and can be printed. Paul will be
             testing this last feature.
           + rawevent plug-in. Plug-in to take raw EVIO data and turn it
             into DANA objects[?]. Question: is someone in the
             collaboration interested doing the translation from crate,
             slot, channel to detector-specific description[?]. Beni
             suggested that this scheme be able to write to a named
             pipe[?].
      * HDGeant crashes. David had previously reported a problem where
        turning on electromagnetic background causes a crash. Richard has
        not been able to reproduce the problem though David continues to be
        able to. There is a suspicion that the version of GEANT in
        /group/halld that David has been using is the cause. This issue has
        been entered in Mantis.


Review of minutes from the last meeting

    We went over the [36]minutes of the June 15th meeting. Not a lot of
    discussion was generated.

Non-reproducible results

    Will describe the problem he has observed with different results each
    time the reconstruction is run. Others have reproduced the problem.
    There seem to be problems with four vectors changing, the roster of
    particles changing, and the events for which reconstruction succeeds
    changing. Work is ongoing, by Will, David, Beni and Paul. This issue
    has also been logged in Mantis.

Restructuring particle classes

    Paul presented hi proposal for a modest re-organization of the
    top-level particle classes. See [39]his wiki page for details. There
    was a lot of discussion, but in the end we agreed that Paul should
    proceed with the changes.

Action Item Review

    We went over the list of active items. Some should be updated and
    marked as resolved or closed. Mark will send reminders to assignees
    where appropriate.

Review of recent repository activity

    No comments or discussion was generated.

Dead or disabled channels

    Eugene asked how the software deals with channels or sets of channels
    that have been turned off due to hardware problems. Currently there is
    not a specific provision for this situation. We will have to make some
    plans to address this.

New Action Items

     1. Look into off-site collaborators checking out from the 12 GeV
        repository. -> David
     2. Remind people to update their Mantis items. -> Mark
     3. Design behavior of reconstruction when channels are known to be
        missing.

    Retrieved from
    
"http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_June_29%2C_2011"

References

   33. http://www.jlab.org/news/internet/2006/geant4.html
   34. mailto:marki at jlab.org
   36. 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_June_15%2C_2011#Minutes