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<p>Please find the minutes below and at</p>
<p>
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_August_23,_2017#Minutes">https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_August_23,_2017#Minutes</a>
.</p>
<p>________________</p>
<div id="mw-content-text" dir="ltr" class="mw-content-ltr" lang="en">
<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">Minutes, August 23, 2017</span></h2>
<p>Present:
</p>
<ul>
<li> <b>CMU</b>: Curtis Meyer</li>
<li> <b> FSU </b>: Brad Cannon, Sean Dobbs</li>
<li> <b> Glasgow </b>: Peter Pauli</li>
<li> <b> JLab </b>: Thomas Britton, Eugene Chudakov, Hovanes
Egiyan, Mark Ito (chair), Dmitry Romanov, Justin Stevens,
Simon Taylor, Beni Zihlmann</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/gjXHf/">recording of this
meeting</a> on the BlueJeans site. Use your JLab credentials
to access it.
</p>
<h3><span class="mw-headline" id="Announcements">Announcements</span></h3>
<ol>
<li> <b><a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2017-August/002907.html">New
version of RCDB: version 0.02</a></b>. 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.</li>
<li> <b>New version of mcsmear development branch</b>. Mark
will announce a build of the latest tag on the mcsmear
development branch before lunch today. [<a rel="nofollow"
class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2017-August/002913.html">Announcement,
added in press</a>].</li>
<li> <b>Pull request tests not working</b>. 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.</li>
<li> <b>CCDB 1.07 on the way</b>. 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.</li>
</ol>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_last_meeting">Review of minutes
from the last meeting</span></h3>
<p>We went over the <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_August_9,_2017#Minutes"
title="GlueX Offline Meeting, August 9, 2017">minutes from
August 9</a>. There was no significant discussion.
</p>
<h3><span class="mw-headline" id="Status_of_HDvis">Status of HDvis</span></h3>
<p>Thomas gave an update including a demonstration of the <a
rel="nofollow" class="external text"
href="https://halldweb.jlab.org/talks/2017/HDvis2/js/event.html">latest
version</a>. For his commentary, see the 16:30 mark in the
recording.
</p>
<ul>
<li> The FDC hits are aligned properly now.</li>
<li> CDC hits have been added.</li>
<li> Start Counter hits have been added.</li>
<li> Currently missing BCAL geometry and hits.</li>
<li> There are thousands of objects in the scene at present;
this is affecting performance.</li>
<li> Dmitry has been working on the structure of the code,
working toward a framework within which other developers can
contribute visualization schemes.</li>
<li> A play/pause button will be added.</li>
<li> Keyboard for translations, mouse for rotations.</li>
</ul>
<h3><span class="mw-headline"
id="Simulations_for_mcsmear_development">Simulations for
mcsmear development</span></h3>
<p>Sean made several comments on the recent work by folks to do
comparison between Monte Carlo and data.
</p>
<ul>
<li> 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.</li>
<li> 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.</li>
<li> He is looking at HDDM changes.
<ul>
<li> Adding trigger information to the event.</li>
<li> Putting in pulse amplitudes. These are not there at
present, but are used in a lot of contexts in the
reconstruction.</li>
</ul>
</li>
<li> 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.</li>
<li> 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.</li>
<li> 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.</li>
</ul>
<h3><span class="mw-headline" id="Review_of_recent_pull_requests">Review
of recent pull requests</span></h3>
<ul>
<li> Beni has added ADC and TDC timing cuts to TOF point
formation.</li>
<li> David has added material maps for detectors downstream of
the tracking chambers (TOF, FCAL).</li>
<li> 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.</li>
</ul>
<h3><span class="mw-headline"
id="Review_of_recent_discussion_on_the_GlueX_Software_Help_List">Review
of recent discussion on the GlueX Software Help List</span></h3>
<p>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 <a rel="nofollow"
class="external text"
href="https://groups.google.com/forum/#%21topic/gluex-software/7K-BNuuXaRo">the
list</a> for the on-going discussion.
</p>
<h3><span class="mw-headline" id="Action_Item_Review">Action Item
Review</span></h3>
<ol>
<li> Release the tagged version of the mcsmear development
branch. (Mark)</li>
<li> Rationalize the version set associated with the new RCDB
version. (Mark)</li>
<li> Fix the pull-request-induced build mechanism. (Mark and
Sean)</li>
<li> Add the BCAL to HDvis (Thomas, Dmitry)</li>
<li> Sort out timing issues related to target position as
discussed on the Software Help list.</li>
</ol>
</div>
<pre class="moz-signature" cols="72">--
Mark Ito, <a class="moz-txt-link-abbreviated" href="mailto:marki@jlab.org">marki@jlab.org</a>, (757)269-5295
</pre>
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