Difference between revisions of "GlueX Offline Meeting, December 1, 2010"

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(copy of last time)
 
(complete draft agenda)
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GlueX Offline Software Meeting<br>
 
GlueX Offline Software Meeting<br>
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Wednesday, November 17, 2010<br>
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Wednesday, December 1, 2010<br>
 
1:30 pm EDT<br>
 
1:30 pm EDT<br>
 
JLab: CEBAF Center F326/7
 
JLab: CEBAF Center F326/7
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===Slides===
 
===Slides===
  
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Talks can be deposited in the directory <code>/group/halld/www/halldweb1/html/talks/2010-11</code> on the JLab CUE (you have to be a member of the "halld" Unix group). This directory is accessible from the web at https://halldweb1.jlab.org/talks/2010-11/ .
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Talks can be deposited in the directory <code>/group/halld/www/halldweb1/html/talks/2010-12</code> on the JLab CUE <ref>You have to be a member of the "halld" Unix group to do this.</ref>. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2010-12/ .
  
 
=Agenda=
 
=Agenda=
  
 
# Announcements
 
# Announcements
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# Review of [[GlueX Offline Meeting, November 2, 2010#Minutes|minutes from the last meeting]]: all
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# Review of [[GlueX Offline Meeting, November 17, 2010#Minutes|minutes from the last meeting]]: all
 
# Calibration Database Update: Dmitry
 
# Calibration Database Update: Dmitry
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# [[Media:craigb_python_encapsulation.pdf | Python encapsulation of C++: Craig]]
 
 
# Action Item Review: all
 
# Action Item Review: all
 
## [http://tinyurl.com/2beqwlk Resolved issues]
 
## [http://tinyurl.com/2beqwlk Resolved issues]
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#* To view these links, [https://halldnew.jlab.org/mantisbt/login_page.php login first]. Anonymous login is available.
 
#* To view these links, [https://halldnew.jlab.org/mantisbt/login_page.php login first]. Anonymous login is available.
  
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=Minutes=
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----
  
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* '''IU''': Ryan Mitchell, Kei Moriya, Matt Shepherd
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====Footnotes====
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* '''JLab''': Craig Bookwalter, Eugene Chudakov, Mark Ito (chair), David Lawrence, Dmitry Romanov, Sascha Somov, Simon Taylor, Beni Zihlmann
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<references/>
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==Announcements==
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We noted, for the record, the new meeting time: every other Wednesday at 1:30 pm.
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==Review of minutes from the last meeting==
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We reviewed the [[GlueX Offline Meeting, November 2, 2010|minutes of the November 2 meeting]] without significant comment.
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==Calibration Database Update==
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[[Image: Ccdb01.png|thumb|CCDB design, before]][[Image: Ccdb02.png|thumb|CCDB design, after]]
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Dmitry showed a couple of diagrams highlight a recent change he has made to the system configuration. He plans to use [http://jquery.com/ jQuery] to help handle the web interface to the database.
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Matt suggested that a specification for the API be circulated for comment. Others may have their own ideas about how the database should be used; those viewpoints should be collected and appropriately incorporated into the design. Dmitry and Mark will work on fleshing out this section of the [http://argus.phys.uregina.ca/cgi-bin/public/DocDB/ShowDocument?docid=1541 specification document].
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==Python encapsulation of C/C++ Code==
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Craig gave an overview of his experience doing this with CLAS analysis software. See [[Media:craigb_python_encapsulation.pdf|his slides]] for details. He used the [http://www.swig.org/ SWIG] package to auto-generate the glue code to make the compiled code available from a Python script. Since the compiled code has been worked over by others for some time, errors introduced in using it were often in his own private code. He has found debugging those errors in the context of a scripting language much easier than doing so in say C++ or in the ROOT framework. Rapid development, more work done, by leveraging the software development work of others in a much simpler programming environment.
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There were caveats of course. The auto-generation can have difficulties for certain language constructs. We thought of examples where this approach might be used to wrap existing API's:
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* HDDM
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* EVIO
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* the new calibration database routines
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For the first two, a wrapped interface could be used to do simple skims of data sets. For the last one, command line interfaces and web interfaces would both be much easier in a scripting language.
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==Parallelism Workshop==
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David reported that the Parallelism Workshop will be held January 6 and 7. The JSA Initiative Fund will contribute to the cost. See the [http://conferences.jlab.org/Parallelism2011/ conference webpage] for details.
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==Action Item Review==
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We went over the [http://tinyurl.com/2beqwlk resolved] and [http://tinyurl.com/25g8af6 outstanding] items. Folk were encouraged to address tasks assigned to them.
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Revision as of 15:57, 30 November 2010

GlueX Offline Software Meeting
Wednesday, December 1, 2010
1:30 pm EDT
JLab: CEBAF Center F326/7

Telephone

To connect by telephone:

  1. dial:
    • 800-377-8846 : US
    • 888-276-7715 : Canada
    • 302-709-8424 : International
  2. enter participant code: 77438230# (remember the "#")

Video Conferencing

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2010-12 on the JLab CUE [1]. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2010-12/ .

Agenda

  1. Announcements
  2. Review of minutes from the last meeting: all
  3. Calibration Database Update: Dmitry
  4. Action Item Review: all
    1. Resolved issues
    2. Outstanding issues
    • To view these links, login first. Anonymous login is available.

Footnotes

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