GlueX Offline Meeting, January 12, 2011

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GlueX Offline Software Meeting
Wednesday, January 12, 2011
1:30 pm EST
JLab: CEBAF Center F326/7

Agenda

  1. Announcements
  2. Review of minutes from the last meeting: all
  3. Impressions from the Parallelism Workshop: David
  4. IT Readiness for 12 GeV: Graham Heyes
  5. Changes to TOF code: Beni
  6. Tracking Issues: Kei
  7. Action Item Review: all
    1. Resolved issues
    2. Outstanding issues
    • To view these links, login first. Anonymous login is available.
  8. Review of recent repository activity: all

Communication Information

Telephone

To connect by telephone:

  1. dial:
  2. enter access code followed by the # sign: 3421244#

Video Conferencing

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-1Q on the JLab CUE [1]. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-1Q/ .

Minutes

Present:

  • FSU: Nathan Sparks
  • IU: Jake Bennett, Ryan Mitchell, Kei Moriya, Matt Shepherd
  • JLab: Hovanes Egiyan, Graham Heyes, Mark Ito (chair), David Lawrence, Yi Qiang, Dmitry Romanov, Simon Taylor, Beni Zihlmann

Announcments

Mark encouraged people to start thinking about what talks they want to give at the upcoming Collaboration Meeting in the Offline session.

Parallelism Workshop

David gave some impressions from last week's [??? Workshop on ???]. Fifty five people registered and a like number attended. There were lots of interesting and informative talks, featured among them talks from folks outside the JLab community. See [??? David's email] for his summary for the participants and a link to the virtual machine that has the hands-on examples loaded on it.

In discussion Matt asked if JLab has licenses for purify??? and quantify???. Graham said that it did; he would look into who owns them now.

Review of IT Readiness for the 12 GeV Era

Graham described the upcoming review of all computing plans for 12 GeV era. The review will be comprehensive in that it will include accelerator controls, data acquisition support software, the Computer and Network Infrastructure Department (CNI) and the Management Information Systems Department (MIS). Some of his points:

  • want to determine if we can handle data coming from experiments
  • need an outline of remarks by all speakers by end of month
  • the review will be around the 2nd week of March
  • Graham will send around a spreadsheet, asking for updates to computing requirements from various groups
  • scheduled speakers: Bob Michaels from Hall A, Dennis Weygand from Hall B, Mark Ito from Hall D, a representative from Hall C--TBA, and Graham with an overview
  • current computing requirements:
    • Hall D: compute intensive
    • Hall B: storage intensive
  • storage more of a worry
  • this will be an internal (to JLab) review
  • a pre-cursor to external review in a year or so

Changes to TOF Code

Beni described recent changes he has made to the HDDM data model to accommodate information from the Monte Carlo about "truth" information related to time-of-flight hits. In some cases, new elements were introduced to be able to keep both generated and detected information, and some elements were expanded to store information about the particle producing the hits.

A lot of discussion followed on the general idea of keeping generated quantities ("truth") and detected quantities ("hits") separate in our analysis. Some of Beni's changes seemed to violate this separation. Beni, Mark, and David agreed to meet after the meeting to discuss alternate approaches that preserve the information desired, but make the above mentioned separation more explicit.


dtofhitraw, w/or w/o "truth" tag

write to email list

bms assignment

New Action Items

  1. Look into purify??? and quantify??? licenses. -> Graham
  2. Send email to the list on recent problems in the offline code. -> Kei
  3. Prepare revised computing requirements for IT review. -> Mark

Footnotes

  1. You have to be a member of the "halld" Unix group to do this.