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<p>Folks,</p>
<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,_June_29,_2018#Minutes">https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_June_29,_2018#Minutes</a></p>
<p> -- Mark</p>
<p>_______________________</p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX Offline Meeting, June 29, 2018, </span><span
class="mw-headline" id="Minutes">Minutes</span></h2>
<div id="bodyContent" class="mw-body-content">
<div id="mw-content-text" dir="ltr" class="mw-content-ltr"
lang="en">
<p>Present:
</p>
<ul>
<li> <b> CMU: </b> Naomi Jarvis</li>
<li> <b> FIU: </b> Mahmoud Kamel</li>
<li> <b> FSU: </b> Sean Dobbs</li>
<li> <b> JLab: </b> Alex Austregesilo, Mark Ito
(chair), David Lawrence, Simon Taylor, Beni Zihlmann</li>
<li> <b> W&M: </b> Justin Stevens</li>
<li> <b> Yerevan: </b> Hrach Marukyan</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/Gl5u7/">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> <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2018-June/003228.html">Sim-Recon
2.26.0</a>. A periodic release. See the release
notes for changes from the last such release.</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/gluex_root_analysis/releases/tag/0.3">GlueX
Root Analysis 0.3</a>. There has not been a new
release for about a year. This one was overdue.</li>
</ol>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_June_15_meeting">Review
of minutes from the June 15 meeting</span></h3>
<p>We went over <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_June_15,_2018#Minutes"
title="GlueX Offline Meeting, June 15, 2018"> the
minutes</a>.
</p>
<ul>
<li> The Experimental Readiness Review for GlueX II was
held last Monday. David noted that Eugene Chudakov has
already circulated the preliminary report of the
committee.</li>
<li> David mentioned that we may want to revisit our
estimate of the amount of Monte Carlo we need. It
accounts for nearly half of our current projections.
This is in line with what we have always said, but
bears re-examination.</li>
</ul>
<h3><span class="mw-headline"
id="Coming_Computing_Resources">Coming Computing
Resources</span></h3>
<p>Mark flipped through <a rel="nofollow" class="external
text"
href="https://www.jlab.org/indico/event/247/session/5/contribution/14/material/slides/0.pdf">Chip
Watson's talk at the June 28 Round Table</a>.
</p>
<p>Increases to the core count on the farm coming this
summer were listed on slide 6:
</p>
<ul>
<li> Current system: 3.5k cores (scaled to Broadwell)</li>
<li> Major farm upgrade due in July: 88 dual 20 core
Skylake compute nodes (farm18), adds 3.5k cores (100%
gain)</li>
<li> Retiring LQCD cluster to be shared for 6 months,
250 dual 8 core (2012 Sandy Bridge) compute nodes,
adds 2.4k cores</li>
<li> Size for the Fall run: 9.4k cores (up 2.7x)</li>
<li> Note: 2.7k cores go end of life mid way through
FY2019, and we might </li>
</ul>
<p>add only 1.8k new, dropping onsite capacity to 8.5k
cores, still up 150%.
</p>
<p>For all of the talks presented at the Round Tables see
the <a rel="nofollow" class="external text"
href="https://www.jlab.org/indico/event/247/">Indico
site</a>.
</p>
<h3><span class="mw-headline"
id="Report_from_the_June_28_SciComp_Meeting">Report
from the June 28 SciComp Meeting</span></h3>
<p>Mark and David gave the report.
</p>
<ul>
<li> SciComp has replaced PBS with <a rel="nofollow"
class="external text"
href="https://slurm.schedmd.com/">Slurm</a> as the
underlying batch scheduler for the LQCD cluster and
are looking to do the same for the Experimental
Nuclear Physics (ENP) cluster. We now have Auger
sitting on top of PBS and SWIF sitting on top of
Auger. They are looking at eliminating the Auger
layer.</li>
<li> SciComp is planning on allowing LQCD jobs to run on
the ENP cluster at low priority. The reverse will not
be allowed. Jobs submitted to ENP will be able to
pre-empt LQCD jobs (kill them to make room if no job
slots are free).</li>
</ul>
<h3><span class="mw-headline"
id="Missing_CDC_hits_in_recent_bggen_launch">Missing
CDC hits in recent bggen launch</span></h3>
<p>Alex A. reported on the problem. All CDC hits are
apparently missing. Cause of the problem is not known.
See his presentation of the evidence starting at 40:40
in the <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/Gl5u7/">recording</a>.
</p>
<p>We will have to re-run.
</p>
<h3><span class="mw-headline" id="Splitting_up_Sim-Recon">Splitting
up Sim-Recon</span></h3>
<p>Mark reported that there was still some remaining work
to get to a production system.
</p>
<ol>
<li> <b>Environment variable changes</b>. Rather than
HALLD_HOME for sim-recon, we will have HALLD_SIM_HOME
for the halld_sim repository (originally gluex_sim)
and HALLD_RECON_HOME for the halld_recon repository
(originally gluex_recon). We decided that the "halld"
name reflected the fact that non-GlueX experiments
will be using the same software.</li>
<li> <b>Preserving branches in halld_recon</b>. There
were some details to be worked out to have the
branches from sim-recon transmit to halld_recon.</li>
<li> <b>Removing sim pieces from gluex_recon</b>. This
had not been done. Removal necessitates changes in the
build system.</li>
<li> <b>Dealing with build_scripts</b>. Build_scripts
has not been modified for the new configuration. All
work so far has been in getting a working build.</li>
</ol>
<h3><span class="mw-headline" id="HDGeant4_Meeting">HDGeant4
Meeting</span></h3>
<p>At the last collaboration meeting Richard suggested
having a meeting dedicated to issues related to the
Geant4 version of our simulation. The first meeting will
be Friday, July 6 at 10 pm. We will likely meet
bi-weekly in the slot opposite the Offline Software
meetings.
</p>
<h3><span class="mw-headline"
id="Review_of_Pull_Requests_and_Software_Help_Topics">Review
of Pull Requests and Software Help Topics</span></h3>
<p>We went over <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/sim-recon/pulls?q=is%3Aclosed+is%3Apr">recent
pull requests</a> and <a rel="nofollow"
class="external text"
href="https://groups.google.com/forum/#%21forum/gluex-software">recent
discussion on the GlueX Software Help List</a> without
major discussions.
</p>
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<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
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