[Halld-offline] Offline Software Meeting Minutes, October 30, 2013

[Mark Ito]

Folks,

Find the minutes below and at https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_30,_2013#Minutes .

  -- Mark
__________________________________________

GlueX Offline Meeting, October 30, 2013
Minutes

   Present:
     * CMU: Paul Mattione, Curtis Meyer
     * IU: Kei Moriya, Matt Shepherd
     * JLab: Mark Dalton, Mark Ito (chair), David Lawrence, Nathan Sparks,
       Simon Taylor, Elliott Wolin, Beni Zihlmann
     * Northwestern: Sean Dobbs
     * UConn: Alex Barnes

Announcements

    1. Elliott reported that the counting room raid to tape library
       transfer is working. A directory structure for the raw data is in
       place. Elliott will give us a description at a future meeting.
    2. David has an SCons system that builds the entire sim-recon tree.
       This is motivated by the desire to do different parts of the build
       in parallel. He will give us a presentation describing the new
       system at a future meeting.
    3. Mark announced that the Lab has entered an agreement with GitHub to
       host git repositories. The site is already being used actively by
       Halls A and C. Mark succeeded in uploading our Subversion
       repository to the GitHub site. He will report to the group when he
       has a better understanding of what he is doing.
    4. Mark also announced that he is about to release
       sim-recon-2013-10-17. The version builds on three platforms and can
       be checked out from the SVN repository.

Long-Term Code Versioning

   Paul raised the issue of how we should manage future versions of the
   code when we have significant data sets taken and reconstructed.
   Simulated data related to the real data will also exist. Analysis tools
   may evolve, but the reconstruction and the simulation will have to be
   tied to the data. One version of the software will likely not fulfill
   all of our needs.

   Paul will give a presentation on ideas he and Matt have been discussing
   in December some time.

Review of Minutes from the Last Meeting

   We looked over the [41]minutes of the October 16th meeting.
     * The single-track reconstruction test is completing, but the
       efficiency is not what it used to be. Tracks in the backward
       direction (with polar angle greater than 70 degrees) have the
       biggest problem. Simon is investigating.
     * David has been making progress on the vertex smearing issue raised
       at the last meeting by Kei. When he is finished we will get a
       report.

Software Review Planning

   Curtis let us through the
   [[SoftwareReview_October_25#Outlines_of_Talks|list of slides] for each
   of the talks planned at the upcoming review. Draft talks should be
   ready next week. Rolf will have another division-wide meeting November
   11th. We are supposed to show the draft slides then.

   David is working on the manpower assessment. He has received responses
   from some, but not all institutions. We hope to account for manpower
   for analysis as well this time.

Mini Data Challenge at IU

   Kei presented slides summarizing a mini data challenge he performed on
   the IU cluster. See [44]his slides for details.

   He generated 50 million bggen events at a rate of about 20 million a
   day. He saw failures (no REST files or unusable REST file) at about the
   a same rate we have been seeing in previous data challenges. He was
   able to report some of the details of the failures however. He also
   looked at the output sample in terms of a few hyperon channels. He is
   exploring ways to increase his statistics.

   Retrieved from
   "[45]https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_30,_2013"

References

  41. https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_16,_2013#Minutes
  44. https://halldweb1.jlab.org/talks/2013-4Q/iu-minidatachallenge.pdf
  45. https://halldweb1.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_30,_2013