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<p>Folks,</p>
<p>Please find the minutes below and at
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_4,_2017#Minutes">https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_October_4,_2017#Minutes</a>
.</p>
<p> - Mark</p>
<p>__________________________</p>
<p>
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<h2 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX Offline Meeting Minutes, October 4, 2017</span></h2>
<h2> </h2>
<div id="bodyContent" class="mw-body-content">Present:
<div id="mw-content-text" dir="ltr" class="mw-content-ltr"
lang="en">
<ul>
<li> <b> CMU: </b>: Naomi Jarvis</li>
<li> <b> FIU </b>: Joerg Reinhold</li>
<li> <b> FSU </b>: Sean Dobbs</li>
<li> <b> JLab: </b>: Alex Austregesilo, Amber
Boehnlein, Thomas Britton, Eugene Chudakov, Sebastian
Cole, Mark Ito (chair), David Lawrence, Sascha Somov,
Simon Taylor, Beni Zihlmann</li>
</ul>
<p>There is a <a rel="nofollow" class="external text"
href="https://bluejeans.com/s/1KDeL/">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/2017-September/002948.html">new
tag of mcsmear branch of sim-recon, version 3</a>.
Sean released a new tag of the mcsmear development
branch of sim-recon. Mark has built it at JLab.</li>
<li> <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2017-September/002955.html">old,
empty volatile directories now being deleted</a>
Directories on the volatile disk that are (a) empty
and (b) remain so for three months are now being
deleted.</li>
<li> <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2017-September/002954.html">Farm
jobs should use SQLite form of the CCDB</a> If
hundreds of farm jobs access the MySQL database server
for calibration constants, the server gets
overwhelmed. Use the disk-resident SQLite version of
the database when running on the farm.
<ul>
<li> Thomas has added an option to MCwrapper for
selecting SQLite files for CCDB.</li>
</ul>
</li>
</ol>
<h3><span class="mw-headline"
id="Review_of_minutes_from_the_last_meeting">Review of
minutes from the last meeting</span></h3>
<p>We went over the <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_September_20,_2017#Minutes"
title="GlueX Offline Meeting, September 20, 2017">minutes
from September 20</a>.
</p>
<ul>
<li> The automatic updates of the <b> Oasis file system
</b> are still not functioning fully automatically.
Mark has a <a rel="nofollow" class="external text"
href="https://ticket.opensciencegrid.org/34965">ticket
into the Grid folks</a> asking for guidance on how
to proceed.</li>
<li> The first monthly <a rel="nofollow"
class="external text"
href="https://mailman.jlab.org/pipermail/halld-physics/2017-October/001144.html">Analysis
Launch is now finished</a>.</li>
</ul>
<h3><span class="mw-headline" id="HDvis_update">HDvis
update</span></h3>
<p>Thomas guided us through the latest version of the <a
rel="nofollow" class="external text"
href="https://halldweb.jlab.org/talks/2017/HDvis2/js/event.html">new
event display</a>. See the demo starting at 10:00 in
the recording.
</p>
<ul>
<li> The orthographic view is now in.</li>
<li> Thomas has been talking to groups about what they
want to see in the display of their detector system.</li>
<li> He will give a demo at the collaboration meeting.</li>
<li> David requested that an axis indicator appear.</li>
<li> Naomi suggested fixed, standard views for
re-orienting oneself. Thomas said that that is in the
plan.</li>
<li> Added in press: there was a glitch with mouse-over
in the demo. Subsequent to the meeting, Thomas found
and fixed it. It appeared only with the Firefox
browser.</li>
</ul>
<h3><span class="mw-headline"
id="Reducing_work_disk_usage">Reducing work disk usage</span></h3>
<p>Mark went over <a rel="nofollow" class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2017-September/002952.html">his
recent email</a>. Some points of information:
</p>
<ul>
<li> We are getting a new work disk. It with be ZFS and
not Lustre.</li>
<li> The new disk is significantly smaller than the work
space we are using now. We will have to reduce our
usage from 77 TB down to 45.</li>
<li> Some reduction (about 10 TB) has already occurred
in response to Mark's email.</li>
<li> We looked at the <a rel="nofollow" class="external
text"
href="https://halldweb.jlab.org/disk_management/work_report.html">Work
Disk Usage Leader-board</a>.</li>
<li> Mark reported that it seems that SciComp has been
slowing reducing our cache and volatile reservations
in response to ever increasing usage on work.
<ul>
<li> Work is not formally managed. The work
allocation is done by UNIX group is really total
group Lustre usage minus volatile group usage
minus cache group usage. Volatile and cache
however are managed by directory location so there
are corner cases. As an unmanaged work grows,
cache and volatile feel the squeeze.</li>
</ul>
</li>
<li> Mark will be contacting individuals and consulting
on reducing their work disk footprint.</li>
</ul>
<p>If you have old, unused files under /work/halld, now
would be a great time to delete them or archive them to
tape.
</p>
<h3><span class="mw-headline"
id="Preliminary_Tape_and_Disk_Usage_Projections">Preliminary
Tape and Disk Usage Projections</span></h3>
<p>Mark went over a <a rel="nofollow" class="external
text"
href="https://docs.google.com/spreadsheets/d/1QQQ2R3QrJkJgN37lt9yRlhVylk4KDJQKAn8m6Is8paM/edit?usp=sharing">spreadsheet</a>
summarizing the files produced by the various launches
for the Spring 16 and Spring 17 runs. The input was an
interview with Paul Mattione and Alex on the previous
day. He outlines two strategies for what we might want
to keep on disk, high-usage and low-usage. The high
usage strategy requires 260 TB spinning including both
Spring 16 and Sprint 17 running. The low-usage only 86
TB. He noted that our current usage is close to the
middle of this range.
</p>
<p>This is a work in progress. Beni pointed out that Monte
Carlo data is not counted. Calibrations skims were left
out also; Mark has not gotten to doing the research on
those. At this point, these numbers are lower limits.
</p>
<h3><span class="mw-headline"
id="Review_of_recent_pull_requests">Review of recent
pull requests</span></h3>
<p>Paul checked in a major change to the analysis library.
He will describe the new stuff at the collaboration
meeting next week.
</p>
<p>A couple of the <a rel="nofollow" class="external
text"
href="https://github.com/JeffersonLab/sim-recon/pulls?q=is%3Apr+is%3Aclosed">recent
requests</a> (one from David, one from Will McGinley)
showed large numbers of files differing on the proposed
branch from the version on the master branch, nearly
100, when the number of changes being proposed were only
a few. These were due to Paul's analysis library changes
getting merged before the requests in question got
merged. Since there were no conflicts on the two
branches, these merges can go ahead without causing any
problem.
</p>
<h3><span class="mw-headline"
id="Review_of_recent_discussion_on_the_GlueX_Software_Help_List">Review
of recent discussion on the GlueX Software Help List</span></h3>
<p>We went over the <a rel="nofollow" class="external
text"
href="https://groups.google.com/forum/#%21forum/gluex-software">recent
threads</a>.
</p>
<p>As the result of <a rel="nofollow" class="external
text"
href="https://groups.google.com/forum/#%21topic/gluex-software/2FqnXJepUY8">one
discussion</a> Mark built a version of the code from
the last reconstruction launch on Spring 16 data. In the
future, we may want to do builds of certain launches on
the group disk as a matter of course.
</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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