GlueX Offline Meeting, August 24, 2011

From GlueXWiki
Revision as of 19:36, 24 August 2011 by Marki (Talk | contribs) (→‎Minutes: dst)

Jump to: navigation, search

GlueX Offline Software Meeting
Wednesday, August 24, 2011
1:30 pm EDT
JLab: CEBAF Center F326

Agenda

See Curtis's email for some background.

  1. Announcements
  2. Review of minutes from the last meeting: all
  3. Proposal to shrink the DST Data Format size (Richard/Discussion).
  4. Tracking chi-squared/error update: Paul Mattione.
  5. Tracking dE/dx update.
  6. FCal reconstruction update.
  7. BCAL reconstruction 8/24/11
  8. FDC Changes in GSIM[1] and restoration of default behavior [2].
    • Default behavior (same as old): only the time at the doca is reported (no explicit cluster generation).
    • Drift times and diffusion computed based on results of Garfield simulations for nominal gas mixtures for FDC and CDC.
  9. Treatment of magnetic field maps in the CCDB: Dmitry
  10. Action Item Review: all
  11. 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/2011-3Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-3Q/ . You have to be a member of the "halld" Unix group to do this.

Minutes

Present:

CMU: Will Levine, Paul Mattione IU: Kei Moriya, Matt Shepherd JLab: David Lawrence, Mark Ito (chair), Dmitry Romanov, Sascha Somov, Simon Taylor, Elliott Wolin, Beni Zihlmann UConn: Richard Jones

Announcements

Elliott will update the "DANA-EVIO stuff" now that the reconstruction class re-arrangement has settled down.

Review of minutes from the last meeting

We reviewed the minutes from the ??? meeting.

  • Elliott wondered if using an ??? was overkill for the online since the queries are so simple.
  • Paul asked for collective wisdom about deleting DPhoton from the trunk. He will delete it.

Proposal to shrink the DST data format size

Richard objected to the title of this agenda item. Nonetheless...

He walked us through the [??? recently circulated spreadsheet] detailing the contents of the proposed DST and the anticipated savings in space for each reconstructed C++ class. The idea is to save enough information to reconstitute the targeted DANA classes minimizing the information while keeping the classes useful for data analysis.

Some random notes:

  • The particle list cuts only diquarks from those generated by PYTHIA
  • A compression scheme is possible and there were several proposals on how to do it.
  • The exact format of the serialized data is yet to be deterimined.

Tracking chi-squared/error update

actual split clusters, not a reconstruction in the fcal

Retrieved from "https://halldweb1.jlab.org/wiki/index.php?title=GlueX_Offline_Meeting,_August_24,_2011&oldid=29387"