<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<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,_November_13,_2018#Minutes">here</a>
and below.</p>
<p> -- Mark</p>
<p>_________________</p>
<p>
</p>
<div id="globalWrapper">
<div id="column-content">
<div id="content" class="mw-body" role="main">
<h3><span class="mw-headline" id="Minutes">Minutes</span><span
dir="auto">, GlueX Software Meeting, November 13, 2018</span><span
class="mw-headline" id="Minutes"></span>
</h3>
<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> FSU: </b> Sean Dobbs</li>
<li> <b> JLab: </b> Alexander Austregesilo, Stuart
Fegan, Colin Gleason, Mark Ito (chair), David
Lawrence, Simon Taylor, Beni Zihlmann</li>
<li> <b> Regina: </b> Ahmed Foda</li>
<li> <b> W&M: </b> Justin Stevens</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/Vd7ss/">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>scosg16 upgraded.</b> Thomas reported that the
upgrade of the network card on scosg16.jlab.org solved
the problem he has been fighting with slow job
submission to the OSG and lost access to our database
server. The card was upgraded from 1 Gbit/s to two
bound 10 Gbit/s interfaces, a 20-fold increase in
bandwidth. The problems, before changing the
interface, was due to shipping random trigger files to
the various OSG sites. Where it used to take 6 to 8
hours to submit 2,500 jobs, it now takes 30 minutes. </li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/gluex_MCwrapper/releases/tag/v2.0.3">MCwrapper
v2.0.3 released</a>. See the release notes for
complete information. Thomas has implemented a
reaction line composer to the <a rel="nofollow"
class="external text"
href="https://halldweb.jlab.org/gluex_sim/SubmitSim.html">MCwrapper
submit page</a>. DReactions that users specify will
be produced as ROOT trees along with the output REST
files.</li>
<li> <b>Offline Monitoring Launch Job Crashes</b>. Alex
A. reported that the last monitoring launch had only a
50% yield. He tried running the code used in last
NERSC campaign with a nearly 100% success rate. There
is a suspicion that a change introduced some weeks ago
to remove spurious tracks might be the cause. Alex
will experiment with a build that excludes that change
to see if it makes a difference.
<ul>
<li> Simon noted that the root cause of the spurious
tracks were candidates that changed sign after
re-fits done during reconstruction. These in turn
resulted in tracks that had two occurrences of a
particular particle type (say π<sup>−</sup>) which
in turn resulted in apparent "duplicate" combos.</li>
</ul>
</li>
</ol>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_previous_meeting">Review
of minutes from the previous meeting</span></h3>
<p>We went over the <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Software_Meeting,_October_30,_2018#Minutes"
title="GlueX Software Meeting, October 30, 2018">minutes
from the October 30 meeting</a>.
</p>
<ul>
<li> <b> Computing Review. </b> Curtis and David have
posted draft slides to the <a rel="nofollow"
class="external text"
href="https://www.jlab.org/indico/event/294/">Indico
site</a>.</li>
<li> <b> NERSC. </b> David has received the green
light for another monitoring launch at NERSC, using
version 19. He ran into a SWIF2 problem that Chris
Larrieu has addressed. The idea is to analyze all
runs, using 5% of the files for each.</li>
<li> <b> Work Packages. </b> No progress has been made
assigning names to packages.</li>
</ul>
<h3><span class="mw-headline"
id="Review_of_recent_issues_and_pull_requests">Review
of recent issues and pull requests</span></h3>
<h4><span class="mw-headline" id="halld_recon">halld_recon</span></h4>
<ul>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/halld_recon/issues/40">Issue
#40: Sean broke the tracking again...</a> Problem
seen with ρ yield. Sean traced it to accidental
commenting out of a line of code. Not clear how it
worked at all. Problem was really not with the ρ
yield; rather the normalization against number of
events.</li>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/halld_recon/issues/39">Issue
#39: Problems with kinematic fitter in Lambda
events?</a> There was a lot of discussion on this
issue, but in summary:
<ul>
<li> Sean and Beni found NaNs in the fitting. These
came from tracks coming from way upstream or from
tracks with huge x and/or y starting coordinates.
This problem did not dominate and are not related
to the large deficits that Hao Li is reporting.</li>
<li> Alex's report of 50% of jobs crashing on an
analysis launch with Hao's fix branch may be
related to the crashes he reported earlier in the
meeting when using the most recent code (see the
announcements above). He will investigate.</li>
</ul>
</li>
</ul>
<h4><span class="mw-headline" id="halld_sim">halld_sim</span></h4>
<ul>
<li> <a rel="nofollow" class="external text"
href="https://github.com/JeffersonLab/halld_sim/issues/16">Issue
#16: mcsmear crash</a>. This sparked a discussion
about RCDB support and responsibility for (a)
maintaining the code (b) correct input of critical
values during running. For (a) Dmitry Romanov is here
now and we are hoping he will be able to devote
significant time to RCDB and for (b) we should contact
the online group to make sure all needed parameters
are correctly added. [added in press: see Alex's
comment on this issue about conversations with Sergey
Furletov and Dmitry.]</li>
</ul>
<h4><span class="mw-headline" id="hdgeant4">hdgeant4</span></h4>
<p>There has been very little work in <a rel="nofollow"
class="external text"
href="https://github.com/JeffersonLab/hdgeant4/issues?utf8=%E2%9C%93&q=is%3Aissue">this
area</a> lately. Simon has started looking at the
problem of FDC hits disappearing from tracks.
</p>
</div>
<div class="printfooter">
Retrieved from "<a dir="ltr"
href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Software_Meeting,_November_13,_2018&oldid=90216">https://halldweb.jlab.org/wiki/index.php?title=GlueX_Software_Meeting,_November_13,_2018&oldid=90216</a>"</div>
</div>
</div>
</div>
<div id="footer" role="contentinfo">
<ul id="f-list">
<li id="lastmod"> This page was last modified on 14 November
2018, at 13:33.</li>
</ul>
</div>
</div>
<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
</pre>
</body>
</html>