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<p>Folks,</p>
<p>Please find the minutes <a moz-do-not-send="true"
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Software_Meeting,_January_5,_2021#Minutes">here</a>
and below.</p>
<p> -- Mark</p>
<p>_______________________________</p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX Software Meeting, January 5, 2021, </span><span
class="mw-headline" id="Minutes">Minutes</span></h2>
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lang="en">
<p>Present: Alex Austregesilo, Thomas Britton, Sean Dobbs,
Sergey Furletov, Mark Ito (chair), Naomi Jarvis, David
Lawrence, Simon Taylor, Nilanga Wickramaarachchi
</p>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/6v1iVGDMzH9/">recording
of this meeting</a>. Log into the <a rel="nofollow"
class="external text"
href="https://jlab.bluejeans.com">BlueJeans site</a>
first to gain access (use your JLab credentials).
</p>
<h3><span class="mw-headline" id="Announcements">Announcements</span></h3>
<ol>
<li> <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2020-December/008404.html">New
version set: version_4.33.0.xml</a>. An version set
with update releases of halld_recon, halld_sim, and
hdgeant4.</li>
<li> <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2020-December/008416.html">New
version of halld_sim, 4.26.0, and corresponding
recon version sets</a>. An update release of
halld_sim with changes to the MC_GEN event generator.
</li>
<li> <a rel="nofollow" class="external text"
href="https://halldweb.jlab.org/talks/2021/tape_situation.pdf">Tape
Library Problem Status</a> Mark went over
information he received from Bryan Hess before the
break. Please see the link for a description of the
status at that time.</li>
</ol>
<h3><span class="mw-headline"
id="Review_of_Minutes_from_the_Last_Software_Meeting">Review
of Minutes from the Last Software Meeting</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Software_Meeting,_December_8,_2020#Minutes"
title="GlueX Software Meeting, December 8, 2020">the
minutes from December 8</a> without significant
comment.
</p>
<h3><span class="mw-headline"
id="Minutes_from_the_Last_HDGeant4_Meeting">Minutes
from the Last HDGeant4 Meeting</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_December_15,_2020#Minutes"
title="HDGeant4 Meeting, December 15, 2020">the
minutes from December 15</a> without significant
comment.
</p>
<h3><span class="mw-headline"
id="Report_from_Meeting_on_Reconstruction_on_the_Grid">Report
from Meeting on Reconstruction on the Grid</span></h3>
<p>Mark gave a summary of the meeting held on December 21
to discuss doing reconstruction on the OSG. In
attendance at that meeting were Nathan Baltzell, Thomas
Britton, Edgar Farjado, Bryan Hess, Igal Jaegle, Richard
Jones, Zisis Papandreou, Maurizio Ungaro, and MMI. Most
of the meeting was taken up with Richard explaining the
scheme he is using for a pilot system he is running out
of UConn. [Added in press: Richard gave a talk at the
January 6 Production and Analysis meeting that described
the system. Please see <a rel="nofollow"
class="external text"
href="https://drive.google.com/file/d/126H_isWqHrzZzErORmpmCqtj4i1HFd3H/view?usp=sharing">this
talk</a> for details.
</p>
<p>Richard will be giving a talk tomorrow at a meeting
that Edgar attends with OSG and the XROOTD team. He will
explain his system and solicit feedback from those
groups.
</p>
<h3><span class="mw-headline"
id="Issue_with_reconstruction_test">Issue with
reconstruction test</span></h3>
<p>Alex introduced a problem he has seen where the
reconstructions tests are running very slowly, as if
only one working thread is running when many are
requested. He showed a <a
href="https://halldweb.jlab.org/wiki/images/d/dd/Processing_speed_2021.PNG"
class="internal" title="Processing speed 2021.PNG">plot
of the historical processing rate</a> of the jobs
going back about four years. He is referring to the
fall-off seen in the last few iterations.
</p>
<p>[Added in press: this effect may be due to a change in
the nightly builds that Mark put in. He had started
building with profiling information included (the -p
switch). That has now been removed. We will see if the
reversion to the old configuration restores the
processing rate.]
</p>
<h3><span class="mw-headline"
id="Review_of_recent_issues_and_pull_requests">Review
of recent issues and pull requests</span></h3>
<p>Richard has been working on reproducibility issues when
running the standard reconstruction job. See <a
rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/halld_recon/issues/492">Issue
#492: Repeated runs not giving the same results</a>.
</p>
<h3><span class="mw-headline" id="Action_Items">Action
Items</span></h3>
<ol>
<li> Ask the Computer Center about staging the start of
jobs in time. (Mark)</li>
<li> Make sure that the automatic tests of HDGeant4 pull
requests have been fully implemented. (Mark, Sean)</li>
<li> Finish conversion of halld_recon to use JANA2.
(Nathan)</li>
<li> Ping Dmitry on CCDB Issue #68. (Mark)</li>
<li> Remind Ashley about her problematic cache files.
(Mark)</li>
</ol>
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