[Halld-offline] Data Challenge Meeting, Mon. Dec. 3, 1:30 pm, F326

[Richard Jones]

Mark,

The "events per file" spec for grid production is set by optimization of grid resources, and will be different from what is convenient to do on the jlab production system.  Right now the ideal job time on the grid is 8 hours or so.  Shorter jobs suffer from queuing inefficiency (waiting in line more than they run) and longer jobs start to suffer from pre-emption by higher-priority users.  That puts my output segments at 50K events apiece.  Of course, I can aggregate them in a separate pass later, but I am inclined not to.  A 100MB file is about the right size, large enough to hide open/close overhead but small enough to maximize grid parallelism in later analysis stages.

-Richard J.



On 12/2/2012 5:22 PM, Mark M. Ito wrote:
> https://halldweb1.jlab.org/wiki/index.php/GlueX_Data_Challenge_Meeting,_December_3,_2012
> ____
>
>      GlueX Data Challenge Meeting
>      Monday, December 3, 2012
>      1:30 pm, EST
>      JLab: CEBAF Center, F326/327
>
> Agenda
>
>       1. Announcements
>       2. [9]Minutes from last time
>       3. [10]Conditions for DC-1
>            1. [11]Some Decisions
>       4. JLab Farm Mini-Challenge Status
>       5. Grid status
>       6. CMU status
>       7. start date
>       8. New action items
>
> Meeting Connections
>
>      To connect from the outside:
>
> Videoconferencing
>
>       1. ESNET:
>             + Call ESNET Number 8542553 (this is the preferred connection
>               method).
>       2. EVO:
>             + A conference has been booked under "GlueX" from 1:00pm until
>               3:30pm (EST).
>             + [12]Direct meeting link
>             + To phone into an EVO meeting, from the U.S. call (626)
>               395-2112 and then enter the EVO meeting code, 13 9993
>                  o Instructions for the [13]Phone Bridge to EVO.
>             + [14]Skype Bridge to EVO
>
> Telephone
>
>       1. Phone: (should not be needed)
>             + +1-866-740-1260 : US and Canada
>             + +1-303-248-0285 : International
>             + then use participant code: 3421244# (the # is needed when
>               using the phone)
>             + or www.readytalk.com
>                  o then type access code 3421244 into "join a meeting" (you
>                    need java plugin)
>
>      Retrieved from
> "https://halldweb1.jlab.org/wiki/index.php/GlueX_Data_Challenge_Meeting,_December_3,_2012"
>
> References
>
>      9.
> https://halldweb1.jlab.org/wiki/index.php/GlueX_Data_Challenge_Meeting,_November_19,_2012#Minutes
>     10.
> https://halldweb1.jlab.org/data_challenge/01/conditions/data_challenge_1.html
>     11.
> https://mailman.jlab.org/pipermail/halld-offline/2012-November/001169.html
>     12.
> http://evo.caltech.edu/evoNext/koala.jnlp?meeting=e8eteDvlv9avaBIIasI8
>     13.
> http://evo.caltech.edu/evoGate/Documentation/extclient/telephone/telephone.html
>     14.
> http://evo.caltech.edu/evoGate/Documentation/extclient/skype/skype.html
>


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