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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,_May_26,_2020#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, May 26, 2020, </span><span
class="mw-headline" id="Minutes">Minutes</span></h2>
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lang="en">
<p>Present: Alex Austregesilo, Edmundo Barriga, Thomas
Britton, Mark Dalton, Sean Dobbs, Mark Ito (chair), Igal
Jaegle, Naomi Jarvis, Churamani Paudel, Susan Schadmand,
Justin Stevens, Simon Taylor, Nilanga Wickramaarachchi,
Beni Zihlmann
</p>
<p>There is <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/e7rMO/">a recording of
his meeting</a> on the BlueJeans site. Use your JLab
credentials to authenticate.
</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-May/004017.html">New
version set, version_4.19.0.xml</a> A new container
was built so the HDGeant4 version, called out in this
version set, is not available on Oasis.</li>
<li> <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2020-May/004044.html">New
version set: version_4.20.0.xml</a> This version
removes the "CUTS" card and incorporates a new version
of MCwrapper, the Melle Mel Release, version 2.4.1.
Thomas mentioned a couple of features to come soon:
<ul>
<li> Ability to choose HADR=1 or HADR=4 on the
MCwrapper-bot page.</li>
<li> An implementation of the single particle gun
for MCwrapper.</li>
</ul>
</li>
<li> New HOWTO: <a
href="https://halldweb.jlab.org/wiki/index.php/HOWTO_to_simulate_a_single-particle_gun"
title="HOWTO to simulate a single-particle gun">HOWTO
to simulate a single-particle gun</a> Beni put
together a guide on how to accomplish this
often-required task. [Added in press: Jon Zarling has
extended the HOWTO with instructions on using
MCwrapper to generate single-particle simulation
data.]</li>
<li> <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2020-May/004071.html">genBH
in HDGeant4</a> Richard has incorporated a Beth
Heitler generator directly into HDGeant4.</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,_April_28,_2020#Minutes"
title="GlueX Software Meeting, April 28, 2020">the
minutes from April 28</a>.
</p>
<ul>
<li> We need to review administrative roles for
repositories on the GitHub site.</li>
<li> The move of the random number generation in the
trigger simulation to mcsmear should be turned into a
halld_recon issue.</li>
</ul>
<h3><span class="mw-headline"
id="Report_from_the_Last_HDGeant4_Meeting">Report from
the Last HDGeant4 Meeting</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_May_19,_2020#Minutes"
title="HDGeant4 Meeting, May 19, 2020">the minutes
from the meeting on May 19</a>. Thomas has added the
new VERTEX card from Richard to his list of features to
be added to MCwrapper.
</p>
<h3><span class="mw-headline"
id="More_discussion_on_recon_and_analysis_launch_compatibility.3F">More
discussion on recon and analysis launch compatibility?</span></h3>
<p>...but only a little more. See the threads on <a
rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2020-May/thread.html#4032">the
offline mailing list</a> and on <a rel="nofollow"
class="external text"
href="https://jlab12gev.slack.com/archives/CFXL0MYVA/p1588783429140400">Slack</a>.
</p>
<ul>
<li> Thomas summarized the issue as an accounting
problem. The existing solution depends on a complete
set of version set files for each of the launches and
appropriate entries in the version set correlation
table to record the dependencies of analysis launches
on reconstruction launches.</li>
<li> Alex has started to do just that, comprehensively.
Where appropriate, he creates version sets for
launches as links to pre-existing version set files in
the halld_versions repository.</li>
</ul>
<h3><span class="mw-headline" id="Review_of_recent_issues">Review
of recent issues</span></h3>
<p>We went over a couple of issues.
</p>
<ul>
<li> halld_recon <a rel="nofollow" class="external
text"
href="https://github.com/JeffersonLab/halld_recon/issues/381">Issue
#381</a>: Reconstruction of vertex x-y position. I
appears that the new VERTEX card can put in a shift in
the vertex position as advertised by an appropriate
entry in the CCDB, but if <em>reconstruction</em> is
run with the same CCDB variation, the effect is taken
out, with the event vertices centered at (0,0) in the
x-y plane in the REST file. Reconstruction of the same
simulated data with a <em>CCDB that puts the vertex
at (0,0)</em> reveals the offset put in by the
VERTEX card. This is a mystery and folks are working
on it.</li>
<li> halld_sim <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/halld_sim/issues/128">Issue #128</a>:
Energy deposition in TOF mismatch in data & MC.
This comes about because we do not calibrate the
energy of the TOF in data. Beni is working on a scheme
to do so.</li>
</ul>
<h3><span class="mw-headline"
id="Sensing_Beam-On_to.2Ffrom_Beam-Off_Transitions">Sensing
Beam-On to/from Beam-Off Transitions</span></h3>
<p>Beni reminded us of a problem that David Lawrence
reported where the apparent clock frequency applied to
DAQ boards was inconsistent with expectations. Beni will
discuss the situation with the problem with David and
report back about whether this group should try to
address the problem.
</p>
<h3><span class="mw-headline"
id="Drupal_Database_Glitches">Drupal Database Glitches</span></h3>
<p>Naomi reported seeing long response time when entering
comments on papers on our Drupal site. She has also seen
some entries get added twice. She advises that if
collaborators experience long delays, they delay putting
in their entries and try again later in the day.
</p>
<h3><span class="mw-headline"
id="Requests_for_JLab_Software_License_Purchases">Requests
for JLab Software License Purchases</span></h3>
<ul>
<li> Naomi proposed that JLab upgrade the Slack
workspace we are all using to a paid plan. Thomas
replied that the Lab is thinking of rolling out
Microsoft Teams to users. Teams is already available
to JLab staff.</li>
<li> Naomi proposed that JLab purchase an Overleaf
license. Thomas replied that David Lawrence is already
pursuing such a purchase and that folks who would like
to encourage that effort should contact David.</li>
</ul>
<h3><span class="mw-headline"
id="Data_Processing_at_NERSC">Data Processing at NERSC</span></h3>
<p>Beni asked about readiness for the next reconstruction
launch at NERSC. Igal replied that he should be ready
when the group has certified that we are ready to go on
data from the just-ended run.
</p>
<h3><span class="mw-headline" id="Action_Item_Review">Action
Item Review</span></h3>
<ol>
<li> Get CCDB 2.0 going. (Mark)</li>
<li> Moving the random number generator in the trigger
factory to mcsmear should be an issue in halld_recon</li>
<li> Review administrative roles for repositories on the
GitHub site.</li>
<li> Beni will contact David about the DAQ clock
problem.</li>
</ol>
<h3><span class="mw-headline"
id="Automatic_Calibration_of_FCAL_Data">Automatic
Calibration of FCAL Data</span></h3>
<p>Igal asked if there is a general system for automatic
calibration of detector data. He is interested in
automatic calibrations of the FCAL.
</p>
<ul>
<li> He reported that the current system for the FCAL is
done by hand.</li>
<li> Naomi will send Igal the scripts she uses to
calibrate the CDC as an example of something that
could be developed into an automatic system.</li>
<li> We encouraged Igal to contact Sean about what he
does for the online calibrations.</li>
</ul>
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