[Halld-offline] Offline Software Meeting Minutes, August 23, 2017

[Mark Ito]

Please find the minutes below and at

https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_August_23,_2017#Minutes 
.

________________


    Minutes, August 23, 2017

Present:

  * *CMU*: Curtis Meyer
  * *FSU *: Brad Cannon, Sean Dobbs
  * *Glasgow *: Peter Pauli
  * *JLab *: Thomas Britton, Eugene Chudakov, Hovanes Egiyan, Mark Ito
    (chair), Dmitry Romanov, Justin Stevens, Simon Taylor, Beni Zihlmann

There is a recording of this meeting <https://bluejeans.com/s/gjXHf/> on 
the BlueJeans site. Use your JLab credentials to access it.


      Announcements

 1. *New version of RCDB: version 0.02
    <https://mailman.jlab.org/pipermail/halld-offline/2017-August/002907.html>*.
    This version was needed to support Sascha Somov new trigger
    simulation code. there was a mistake in the announcement: the new
    version is actually 0.02.
 2. *New version of mcsmear development branch*. Mark will announce a
    build of the latest tag on the mcsmear development branch before
    lunch today. [Announcement, added in press
    <https://mailman.jlab.org/pipermail/halld-offline/2017-August/002913.html>].
 3. *Pull request tests not working*. Sean reported that the problem has
    something to do with ssh from the webserver to the build node. He
    and Mark are working on it.
 4. *CCDB 1.07 on the way*. Dmitry will release this in a week or so. I
    includes better logging and log searching, an update of "smart"
    pointers to use those native to the C++11 standard, and eliminates
    the possibility of user "anonymous" contributing constants. Lately,
    Dmitry has been getting help from Andrew Lendacky, a Hall-B student
    from Duquesne University.


      Review of minutes from the last meeting

We went over the minutes from August 9 
<https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_August_9,_2017#Minutes>. 
There was no significant discussion.


      Status of HDvis

Thomas gave an update including a demonstration of the latest version 
<https://halldweb.jlab.org/talks/2017/HDvis2/js/event.html>. For his 
commentary, see the 16:30 mark in the recording.

  * The FDC hits are aligned properly now.
  * CDC hits have been added.
  * Start Counter hits have been added.
  * Currently missing BCAL geometry and hits.
  * There are thousands of objects in the scene at present; this is
    affecting performance.
  * Dmitry has been working on the structure of the code, working toward
    a framework within which other developers can contribute
    visualization schemes.
  * A play/pause button will be added.
  * Keyboard for translations, mouse for rotations.


      Simulations for mcsmear development

Sean made several comments on the recent work by folks to do comparison 
between Monte Carlo and data.

  * For this work we should be using the
    recon-2017_01-ver01-batch01-mcsmear branch of sim-recon. This has
    the reconstruction code for the latest reconstruction pass on Spring
    2017 data, but updated smearing code.
  * The trigger simulation has been added by Sascha. Sean is looking at
    how to use it so that we all get a consistent trigger cut when
    requested.
  * He is looking at HDDM changes.
      o Adding trigger information to the event.
      o Putting in pulse amplitudes. These are not there at present, but
        are used in a lot of contexts in the reconstruction.
  * He has been testing the framework for generation of Monte Carlo on
    the OSG. He has been working off Richard's tools and has had some
    success, often getting better throughput than possible on the JLab farm.
  * Looking at a scheme where we have a uniform interface to both the
    farm and the OSG, including better accounting. Keeping track of jobs
    is especially important on the grid where jobs can be pre-empted and
    may need to the re-submitted.
  * Justin asked if SWIF could be adopted to use on the OSG. This has
    been discussed but is not on anyone's current work list.


      Review of recent pull requests

  * Beni has added ADC and TDC timing cuts to TOF point formation.
  * David has added material maps for detectors downstream of the
    tracking chambers (TOF, FCAL).
  * David has added a program to hd_utilities to reduce the size of
    SQLite filed, discarding data outside of a user-specified run range
    and variation. This can reduce the size of the file by an order of
    magnitude.


      Review of recent discussion on the GlueX Software Help List

There has been an extended discussion of timing in the Monte Carlo 
centered around timing differences induced by an alternate location of 
the target in z, specifically, the target for the charged pion 
polarization experiment. This means relative to a clock based on the RF, 
the interaction time is different for the two target positions. Please 
see the list 
<https://groups.google.com/forum/#%21topic/gluex-software/7K-BNuuXaRo> 
for the on-going discussion.


      Action Item Review

 1. Release the tagged version of the mcsmear development branch. (Mark)
 2. Rationalize the version set associated with the new RCDB version. (Mark)
 3. Fix the pull-request-induced build mechanism. (Mark and Sean)
 4. Add the BCAL to HDvis (Thomas, Dmitry)
 5. Sort out timing issues related to target position as discussed on
    the Software Help list.

-- 
Mark Ito, marki at jlab.org, (757)269-5295

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