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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_Offline_Meeting,_July_13,_2018#Minutes">here</a>
and below.</p>
<p> -- Mark</p>
<p>____________________</p>
<p> </p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">Minutes, GlueX Offline Meeting, July 13, 2018</span></h2>
Present:
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lang="en">
<ul>
<li> <b> CMU: </b> Naomi Jarvis</li>
<li> <b> JLab: </b> Thomas Britton, Mark Ito (chair),
Simon Taylor, Beni Zihlmann</li>
<li> <b> UConn: </b> Richard Jones</li>
<li> <b> Yerevan: </b> Hrach Marukyan</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/MYEhg/">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/2018-July/003243.html">New
sim-recon version: 2.27.0, new HDGeant4 version:
1.7.0, new version set: 2.37</a></b>. These
updates were meant to provide a basis for HDGeant3 vs.
HDGeant4 comparisons.</li>
<li> <b><a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2018-July/003246.html">New
sim-recon version: 2.27.0, new HDGeant4 version:
1.7.0, new version set: 2.37</a></b>. This version
set is for simulation of Spring 2017 data and restores
generation of CDC hits missing in the previous
version. Simulation of bggen events using this version
set will begin next week.
<ul>
<li> We agreed that, in the future, we should have a
definite commitment by an individual to check that
a large simulation launch is producing reasonable
results.</li>
</ul>
</li>
</ol>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_June_29_meeting">Review
of minutes from the June 29 meeting</span></h3>
<p>We went over the <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_June_29,_2018#Minutes"
title="GlueX Offline Meeting, June 29, 2018">minutes
from the last meeting</a>. </p>
<p>The reproducibility problem reported last time has been
solved. Simon reported that it was caused by variation
in the order of hits presented to tracking. It was
solved by using "stable sort" to guarantee the same
ordering of hits on each run of the reconstruction. </p>
<p>Beni reported another problem where (not reproducibly)
a block of 40 events can get lost upon input from an
EVIO event source. This will get fixed in the re-write
of the JANA package. </p>
<p><br>
</p>
<h3><span class="mw-headline"
id="Report_from_the_HDGeant4_Meeting">Report from the
HDGeant4 Meeting</span></h3>
<p>Mark reviewed <a
href="https://halldweb.jlab.org/wiki/index.php/HDGeant4_Meeting,_July_6,_2018#Notes"
title="HDGeant4 Meeting, July 6, 2018">his notes</a>
from the meeting on July 6. Please see the notes for
details. </p>
<p>Since the meeting Thomas and Justin got together and
decided on a set of nine single particle gun
configurations (protons, π<sup>−</sup>s, and photons at
various angle/energy combinations) along with the
standard signal Monte Carlo samples (ρ, φ, ω, π<sup>0</sup>).
A start at generating these samples has been made. </p>
<h3><span class="mw-headline" id="Splitting_up_Sim-Recon">Splitting
up Sim-Recon</span></h3>
<p>Last weekend, Mark <a rel="nofollow" class="external
text"
href="https://mailman.jlab.org/pipermail/halld-offline/2018-July/003240.html">announced
a test build of the split system</a>. He received
feedback from one taker, Justin Stevens, who reported
success with the build. </p>
<p>Richard asked about modification of the HDGeant4 build.
Mark has already taken care of that, on a branch in the
repository. The same story applies to
gluex_root_analysis. </p>
<p>To transition from sim-recon (unified system) to
halld_sim and halld_recon (split system), we will have
to change several things at the same time (or nearly the
same time). We agreed on the following schedule. </p>
<ol>
<li> Early Monday, July 16: deploy the new version of
build_scripts as the default at JLab. This version
supports both the unified and split systems and should
require no changes by users.</li>
<li> Close of business, Tuesday, July 17: deadline for
pushes to the unified system. Changes not committed
and pushed to the unified system will not make it to
the split system. Also note that for the halld_sim
directories, they must appear on the master branch as
well. All existing from sim-recon will appear in
halld_recon.</li>
<li> Early morning Wednesday, July 18: default
configuration at JLab changes to split system.</li>
</ol>
<h3><span class="mw-headline" id="MC_Request_Form">MC
Request Form</span></h3>
<p>Thomas presented a new system for submitting requests
for Monte Carlo to Thomas. Request come in via <a
rel="nofollow" class="external text"
href="https://halldweb.jlab.org/gluex_sim/SubmitSim.html">web
form</a>. He explains this new feature in <a
rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2018-July/003251.html">his
recent announcement of MCwrapper 1.15</a>. </p>
<p>The system is backed up with a database. Requests are
recorded and records of each individual job submitted
are also kept. This will enable a richer variety of
reports to users such as job status, resource usage,
etc. </p>
<h3><span class="mw-headline"
id="New_OSG_production_status_monitor_.28aka_more_computing_resources_for_GlueX.29">New
OSG production status monitor (aka more computing
resources for GlueX)</span></h3>
<p>Richard has rolled out a <a rel="nofollow"
class="external text"
href="https://grendl.phys.uconn.edu/ganglia/?r=day&cs=&ce=&m=load_one&s=by+name&c=&tab=v&vn=Bosco+work+load&hide-hf=false">new
web page</a> that monitors global job usage on the
various university clusters available for running our
OSG jobs. Since the collaboration meeting he has
captured eight such clusters and has observed peaks of
over 4000 simultaneous jobs, excluding those running on
the OSG proper. The system will automatically switch
jobs from site to site if any particular site gets
backed up or goes offline. We first discussed Richard's
proposal for adding university clusters at the <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_June_1,_2018#Request_for_University_Compute_Resources"
title="GlueX Offline Meeting, June 1, 2018">June 1
Offline Meeting</a>. </p>
<p>This is a significant new resource that can be accessed
by GlueX OSG users with no special action other than
specifying "wantjobrouter=true" in the job
configuration. Other clusters may be added in the
future. </p>
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<li id="lastmod"> This page was last modified on 13 July 2018,
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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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