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Folks,<br>
<br>
Please find the minutes below and at<br>
<br>
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_28,_2015#Minutes">https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_28,_2015#Minutes</a><br>
<br>
-- Mark<br>
_________________________________<br>
<br>
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<h1 id="firstHeading" class="firstHeading" style="font-weight:
bold;" lang="en"><span dir="auto">GlueX Offline Meeting,
October 28, 2015</span>, Minutes</h1>
<div id="bodyContent" class="mw-body-content"><span
class="mw-headline" id="Minutes"></span>
<div id="mw-content-text" dir="ltr" class="mw-content-ltr"
lang="en">
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Present:</p>
<ul style="list-style-type: square;">
<li><b>FSU</b>: Brad Cannon, Alyssa Henderson</li>
<li><b>FIU</b>: Mahmoud Kamel</li>
<li><b>JLab</b>: Amber Boehnlein, Mark Ito (chair), Kei
Moriya, Nathan Sparks, Justin Stevens, Beni Zihlmann</li>
<li><b>KC</b>: Paul Mattione</li>
<li><b>NU</b>: Sean Dobbs</li>
</ul>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">There is a<span
class="Apple-converted-space"> </span><a rel="nofollow"
class="external text"
href="https://bluejeans.com/s/8Kew/" style="color:
inherit !important; padding: 0px !important;
text-decoration: inherit !important; background:
transparent;">recording of this meeting</a><span
class="Apple-converted-space"> </span>on the BlueJeans
site.</p>
<h2 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Announcements">Announcements</span></h2>
<ul style="list-style-type: square;">
<li><b>new Version Management System features</b>. Mark
described the changes: URL checking for Git clones and
hash-specific check-outs, See the<span
class="Apple-converted-space"> </span><a
rel="nofollow" class="external text"
href="http://argus.phys.uregina.ca/cgi-bin/public/DocDB/ShowDocument?docid=2793"
style="color: inherit !important; padding: 0px
!important; text-decoration: inherit !important;
background: transparent;">updated document</a><span
class="Apple-converted-space"> </span>for details.
There is also an<span class="Apple-converted-space"> </span><a
rel="nofollow" class="external text"
href="https://halldweb.jlab.org/docs/gluex_build/"
style="color: inherit !important; padding: 0px
!important; text-decoration: inherit !important;
background: transparent;">HTML version</a><span
class="Apple-converted-space"> </span>now.</li>
<li><b>Doxygen fixed</b>: Beni noticed that the<span
class="Apple-converted-space"> </span><a
rel="nofollow" class="external text"
href="http://www.jlab.org/Hall-D/software/HDSoftware_Documentation/"
style="color: inherit !important; padding: 0px
!important; text-decoration: inherit !important;
background: transparent;">Doxygen site</a><span
class="Apple-converted-space"> </span>was out-of-date.
The update had been broken with recent changes to the
nightly builds. Mark has restored the nightly updates.</li>
<li><b><a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2015-October/002155.html"
style="color: inherit !important; padding: 0px
!important; text-decoration: inherit !important;
background: transparent;">New releases: sim-recon
1.6.0 and HDDS 3.4</a></b>. Mark reminded us about
these releases.</li>
<li><b><a rel="nofollow" class="external text"
href="https://halldweb.jlab.org/wiki-private"
style="color: inherit !important; padding: 0px
!important; text-decoration: inherit !important;
background: transparent;">Private wiki</a><span
class="Apple-converted-space"> </span>getting there</b>.
Mark flashed the new site, which still under
construction. The "Private:" pages have been migrated,
but have been deleted from the public site yet. Links
from the private to the public wiki can be made with
wiki links ([[]]) by prepending "public:" to the page
name, e. g., "public:Meetings".</li>
<li><b><a rel="nofollow" class="external text"
href="https://halldweb.jlab.org/wiki/index.php?title=GlueX_Offline_FAQ&diff=70904&oldid=70249"
style="color: inherit !important; padding: 0px
!important; text-decoration: inherit !important;
background: transparent;">Recent additions to the
Offline FAQ</a></b>. Mark highlighted the latest
additions.</li>
<li><b>Build on new Ubuntu release</b>. Beni's announced
that he has succeeded with a build of the GlueX software
on Ubuntu 15.10 using the GCC 5.2 compiler. Some changes
were required to CCDB and root2email.</li>
</ul>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline"
id="Review_of_minutes_from_October_14">Review of minutes
from October 14</span></h3>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">We went over<span
class="Apple-converted-space"> </span><a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_14,_2015#Minutes"
title="GlueX Offline Meeting, October 14, 2015"
style="color: rgb(85, 34, 0); padding: 0px !important;
text-decoration: underline; background: transparent;">minutes
from the October 14 meeting</a>.</p>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;"><b>New Work Disk</b>. Last week we
switched over to a new file server for the work disk. The
new space is based on Lustre. There are a couple of
issues.</p>
<ol>
<li>SQLite files will not work from a Lustre partition.</li>
<li>Builds have been observed to be significantly slower
on the new disk (factors of a few). Speculation is that
this is due to poor performance for small files with
Lustre.</li>
</ol>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">We decided to ask SciComp to allow us
to retain the space we had been using on the old
traditional file server (14 TB) and use that for these
specialized purposes.</p>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Data_Challenge_3_update">Data
Challenge 3 update</span></h3>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Mark found that the reconstruction
for<span class="Apple-converted-space"> </span><a
href="https://halldweb.jlab.org/wiki/index.php/Data_Challenge_3"
title="Data Challenge 3" style="color: rgb(85, 34, 0);
padding: 0px !important; text-decoration: underline;
background: transparent;">DC3</a><span
class="Apple-converted-space"> </span>was not working
judged from the ROOT files. He has decided to start from
the beginning, generating new input data, using the latest
release.</p>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Sean mentioned that we might want to
double-check that reconstruction of simulated data,
converted from HDDM to EVIO, still works with the latest
version of the reconstruction.</p>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Offline_Monitoring">Offline
Monitoring</span></h3>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Kei gave the report. See<span
class="Apple-converted-space"> </span><a
href="https://halldweb.jlab.org/wiki/images/1/1b/2015-10-27-offline_monitoring.pdf"
class="internal" title="2015-10-27-offline
monitoring.pdf" style="color: rgb(85, 34, 0); padding:
0px !important; text-decoration: underline; background:
transparent;">his slides</a><span
class="Apple-converted-space"> </span>for the details.
The bullets from his final slide:</p>
<ul style="list-style-type: square;">
<li>Due to new plugins, now require 8GB of RAM to run jobs
- some pruning of unnecessary histograms would be
welcome</li>
<li>There are some crashes/errors reported in the log
files - will send out notices</li>
<li>Will redo studies of time/resources against
#cores/threads shown at collaboration meeting with
improvements in tracking</li>
<li>Next launch: November 6 (Fri)</li>
<li>SWIF has changed underlying job structure, still
rewriting cross-analysis scripts</li>
<li>Will add instructions to wiki</li>
</ul>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Sean suggested contacting individuals
about their histograms if we really want to reduce the
memory footprint.</p>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Sim1">Sim1</span></h3>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Sean discussed planning for<span
class="Apple-converted-space"> </span><a
href="https://halldweb.jlab.org/wiki/index.php/Sim1_Conditions"
title="Sim1 Conditions" style="color: rgb(85, 34, 0);
padding: 0px !important; text-decoration: underline;
background: transparent;">the next simulation run</a>.
Mark has run the first few test jobs. Sean asked for input
on the final conditions. Justin thought we should try to
match conditions in the Spring. Sean also wants to have
substantial statistics for this effort. Kei asked about
the magnetic field setting. At the calibration we settled
on 1300 A as a reasonable guess. Mark created a
"gluex_simulations" repository on GitHub to version
control the settings for this simulation. Sean added some
scripted checks that the simulation settings are
reasonable for this effort. Sean mentioned that the plan
was to use the standard SQLite CCDB file and lock down the
version of the constants by specifying the timestamp.
Justin suggesting using a slightly lower bound on the
energy range to ensure that lower energy background events
that might sneak into the sample in real data are present
in the simulated sample. We settled on 5 GeV at a
reasonable guess, although this question could stand more
study.</p>
<h3 style="page-break-after: avoid; font-weight: bold;"><span
class="mw-headline" id="Review_of_recent_pull_requests">Review
of recent pull requests</span></h3>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">We went over<span
class="Apple-converted-space"> </span><a rel="nofollow"
class="external text"
href="https://github.com/JeffersonLab/sim-recon/pulls?q=is%3Aopen+is%3Apr"
style="color: inherit !important; padding: 0px
!important; text-decoration: inherit !important;
background: transparent;">the list</a><span
class="Apple-converted-space"> </span>going back about
two weeks.</p>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Sean commented on his change to throw
an exception on CCDB errors so that the failure comes near
the point of the error.</p>
<p style="widows: 3; orphans: 3; margin: 1em 0px;
line-height: 1.2em;">Mark asked that folks try to provide
meaningful comments when merging pull request. Often the
best description of proposed changes comes when the pull
request is first composed; copy and pasting that is a good
start. That original description does not appear to make
it into the git repository by default; it seems to exist
only on the GitHub site.</p>
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