[Halld-offline] Data Challenge Meeting Minutes, September 10, 2012

[Mark M. Ito]

Folks,

Find the minutes at 
https://halldweb1.jlab.org/wiki/index.php/GlueX_Data_Challenge_Meeting,_September_10,_2012 
and below.

   -- Mark
_____

GlueX Data Challenge Meeting, September 10, 2012
Minutes

    Present:
      * CMU: Curtis Meyer
      * EVO: Matt Shepherd
      * FSU: Nathan Sparks
      * JLab: Eugene Chudakov, Mark Ito (chair), David Lawrence, Simon
        Taylor
      * UConn: Richard Jones

JLab Farm Mini-Challenge Status

    Mark presented the current status of the mini data challenge. See
    [17]his wiki page for details. Nearly all of the 1000 data files have
    been generated and reconstructed, although there were failures in a few
    percent of them. He outlined the future work left to do. He will be
    starting another run soon.

    Mark noted that our volatile disk reservation has been restored to 10
    TB its recent value of 2 TB.

    Also the tape volume set we are using for the mini data challenges will
    expand automatically as more output data is written. If our use becomes
    significant, we may be asked to purchase tapes for the library.

Event Size and Truth Information

    Richard reported on event size and a study of how much of that size is
    Monte Carlo information that will not be present in the real raw data.
    So far he has looked at b1pi events with a 9 GeV incident photon. The
    full event size is 117 kB. If he strips out all of the readily
    recognizable truth information the size reduces to 55 kB. He cautions
    that this last number almost certainly contains residual truth
    information, but is likely not dominated by this component. He also
    noted that the mcsmear step inflates the event size by about 40% with
    no stripping performed, before or after.

Collaboration Meeting

    Richard will give a status report on GlueX use of the OSG at the
    collaboration meeting.

    Retrieved from
"https://halldweb1.jlab.org/wiki/index.php/GlueX_Data_Challenge_Meeting,_September_10,_2012"

References

   17. 
https://halldweb1.jlab.org/wiki/index.php/Mini_Data_Challenge_Status,_September_10,_2012

-- 
Mark M. Ito
Jefferson Lab (www.jlab.org)
(757)269-5295