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<p>Please find the minutes <a moz-do-not-send="true"
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Software_Meeting,_December_10,_2019#Minutes">here</a>
and below.</p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX Software Meeting, December 10, 2019, </span><span
class="mw-headline" id="Minutes">Minutes</span></h2>
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<p>Present:
</p>
<ul>
<li> <b> JLab: </b> Alex Austregesilo, Thomas Britton,
Mark Dalton, Mark Ito (chair), Igal Jaegle, Naomi
Jarvis, David Lawrence, Keigo Mizutani, Justin
Stevens, Simon Taylor, Beni Zihlmann</li>
<li> <b> FSU: </b> Sean Dobbs </li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/60@6B/">recording of his
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> From the Computer Center: <a rel="nofollow"
class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2019-November/003825.html">CentOS
7.7 update and post-Thanksgiving plans</a>: New AMD
farm nodes and more Lustre space.</li>
<li> <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2019-December/003832.html">GlueX
Software build for JLab CentOS 7.7</a>: CentOS7.7
treated as a separate platform, complete build on it
is available.</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/gluex_MCwrapper/releases/tag/v2.3.0">MCwrapper
2.3.0 (Frost Release)</a> Thomas released this
today. It contains many, accumulated improvement, most
of them under the hood, include multi-process
monitoring of jobs. See the release notes for details.</li>
</ol>
<h3><span class="mw-headline"
id="Conversion_from_Python_2_to_Python_3">Conversion
from Python 2 to Python 3</span></h3>
<p>Beni raised the issue. He is concerned that future
distributions of Linux will not support Python 2. We may
have to react to this as early as January 2020, when
support of Python 2 will be withdrawn. Mark thought that
the problem may not be all that pressing. He advocates
conversion as we identify problems maintaining critical
portions of our Python 2 code base.
</p>
<h3><span class="mw-headline"
id="Review_of_Minutes_from_the_November_26_Meeting">Review
of Minutes from the November 26 Meeting</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Software_Meeting,_November_26,_2019#Minutes"
title="GlueX Software Meeting, November 26, 2019">the
minutes</a> without significant comment.
</p>
<h3><span class="mw-headline"
id="Review_of_Minutes_from_the_December_3_Meeting">Review
of Minutes from the December 3 Meeting</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_December_3,_2019#Minutes"
title="HDGeant4 Meeting, December 3, 2019">the minutes</a>
without significant comment.
</p>
<h3><span class="mw-headline"
id="New_Version_Set_and_Build">New Version Set and
Build</span></h3>
<p>Beni requested a new version set. The current default
will not support analysis of the data currently being
obtained. Mark I. put it on his list.
</p>
<h3><span class="mw-headline" id="CCDB_2.0_On_the_Way">CCDB
2.0 On the Way</span></h3>
<p>Mark reported that Dmitry is nearly ready to release
CCDB 2.0. It will have improvements including the
ability to freeze variation ancestors with letting the
variation of interest move forward in time. This can be
done without in a way that is fully backward compatible:
old code and new code can use the same updated schema.
The greatly simplifies implementation in comparison with
what one might have expected for a schema change.
</p>
<h3><span class="mw-headline"
id="RCDB_Errors_in_the_Counting_Room">RCDB Errors in
the Counting Room</span></h3>
<p>Naomi and Justin reported <a rel="nofollow"
class="external text"
href="https://logbooks.jlab.org/entry/3748503">problems
with RCDB information</a> being recorded as we take
data. Naomi will contact Sergey Furletov or Dmitry
Romanov or both in an as-yet-to-be-specified order about
the problem.
</p>
<h3><span class="mw-headline"
id="MySQL_Server_Problems:_hallddb-farm.jlab.org">MySQL
Server Problems: hallddb-farm.jlab.org</span></h3>
<p>hallddb-farm is the recommended server to use on the
JLab farm for accessing CCDB data. <a rel="nofollow"
class="external text"
href="https://groups.google.com/forum/#!topic/gluex-software/eG6cmxZxyTM">Kevin
Luckas and Justin have reported jobs hanging forever</a>
when using this server, both from within batch jobs and
interactively. Mark I. started looking into it but ran
into other, unrelated problems. This needs to be
addressed soon!
</p>
<h3><span class="mw-headline"
id="genBH_and_Non-Standard_HDDM_Output_Data">genBH and
Non-Standard HDDM Output Data</span></h3>
<p>Mark D. reported problems with genBH, an optionally
built event generator from the HDGeant4 repository. It
produces output in the hddm_mc_s schema of HDDM and not
in the usual hddm_s schema. Programs downstream of event
generation cannot grok these events. He has modified a
private version to use hddm_s. The package requires
Richard's Dirac++ package, which we do not build as part
of the standard software stack. There was discussion,
not conclusive, about whether the modified version
should be put into some other repository, presumably
halld_sim.
</p>
<h3><span class="mw-headline" id="Action_Item_Review">Action
Item Review</span></h3>
<ol>
<li> Create and build a new version set. (Mark)</li>
<li> Test and debug hallddb-farm.jlab.org.</li>
<li> Figure out what to do with genBH.</li>
</ol>
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