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People,<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,_April_1,_2015#Minutes">https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_April_1,_2015#Minutes</a><br>
<br>
-- Mark<br>
___________________________________________<br>
<br>
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<span dir="auto">GlueX Offline Meeting, April 1, 2015</span><br>
<div id="bodyContent" class="mw-body-content"><span
class="mw-headline" id="Minutes"><br>
Minutes</span><br>
<div id="mw-content-text" dir="ltr" class="mw-content-ltr"
lang="en">
<br>
Present:
<br>
<ul>
<li> <b>CMU</b>: Curtis Meyer</li>
<li> <b>FSU</b>: Aristeidis Tsaris</li>
<li> <b>JLab</b>: Mark Ito (chair), David Lawrence,
Paul Mattione, Nathan Sparks, Mike Staib, Justin
Stevens, Simon Taylor, Beni Zihlmann</li>
<li> <b>MEPhI</b>: Dmitry Romanov</li>
<li> <b>NU</b>: Sean Dobbs</li>
</ul>
<br>
<span class="mw-headline" id="Announcements">Announcements</span><br>
<ol>
<li> Mark executed a global search and replace on the
wiki:
<ul>
<li> halldweb1 -> halldweb</li>
<li> hdops.jlab.org/wiki ->
halldweb.jlab.org/hdops/wiki</li>
</ul>
</li>
<li> Version control for CCDB source files is moving
from our Subversion repository to GitHub. Brad
Sawatzky had been helping Dmitry get it covered under
the JLab contract with GitHub.</li>
<li> Mark has added a node running Red Hat Enterprise 7
to the list of those running the nightly builds. It is
his desktop machine lorentz.jlab.org. Many more
warnings are being generated from the gcc 4.8
compiler.</li>
<li> Mark threatened to enlist help in getting the b1pi
and single-track tests to complete successfully,
something that has not happened for several months.</li>
<li> Sandy Philpott has asked <a rel="nofollow"
class="external text"
href="https://mailman.jlab.org/pipermail/halld-offline/2015-March/001993.html">can
GlueX use idle cores at JLab?</a>.
<ul>
<li> Mark reported that thousands of Data Challenge
3 jobs have been submitted.</li>
<li> We will will likely need to do a lot of
simulation of 5.5 GeV beam.</li>
<li> We had expected to be launching reconstruction
jobs by now, back when 10 GeV was the plan.</li>
<li> Justin pointed out that simulation will be
memory limited since it must be run single
threaded.</li>
</ul>
</li>
</ol>
<br>
<br>
<br>
<br>
<span class="mw-headline"
id="Review_of_the_GlueX_Offline_Meeting.2C_March_18.2C_2015">Review
of the GlueX Offline Meeting, March 18, 2015</span><br>
<br>
We looked over <a
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_March_18,_2015#Minutes"
title="GlueX Offline Meeting, March 18, 2015">the
minutes</a>.
<br>
<br>
<span class="mw-headline"
id="GlueX_Use_of_C.2B.2B11_features_and_GCC_Versions">GlueX
Use of C++11 features and GCC Versions</span><br>
<br>
After consultation among Dmitry, David, Mark, and Richard
Jones, it was agreed that we would endorse Dmitry using
C++11 features for the CCDB, but limited to those
implemented in GCC 4.4. Dmitry will do the modifications
necessary for the CCDB build system.
<br>
Mark had argued that there are now best-practices-like
methods for memory management that are facilitated by the
new smart pointers.
<br>
Whether to use these language features more widely has not
been agreed on. We would need support from the build
system.
<br>
<br>
<span class="mw-headline" id="Offline_Monitoring_Report">Offline
Monitoring Report</span><br>
<br>
We looked at Kei Moriya's <a rel="nofollow"
class="external text"
href="https://halldweb.jlab.org/data_monitoring/launch_analysis/">new
Launch Analysis pages</a>. These are now being generated
quasi-automatically and will be available for new data
when it comes.
<br>
<ul>
<li> For each launch there are reports of how the jobs
performed in terms of execution time and memory usage
among other statistics.</li>
<li> There are sections which graphically compare each
launch to previous launches in several parameters.</li>
<li> The fate of the jobs on each file are cataloged for
each launch.</li>
</ul>
<br>
Sean was interested in seeing what difference Mike's
timing calibrations make for the next launch. Paul
remarked that we could launch whenever those calibrations
are ready. Mike reported that he is already remaking REST
files using his latest calibrations.
<br>
<br>
<span class="mw-headline" id="OSG_Meeting_at_Northwestern">OSG
Meeting at Northwestern</span><br>
<br>
Sean reported on the recently held annual Open Science
Grid meeting.
<br>
<ul>
<li> For the past year the group has been focused in
getting ready for handling the data from the next LHC
run, but now they are turning to better support for
opportunistic running. GlueX was mentioned several
times in this context.</li>
<li> There is a new focus on tools for small independent
researchers to allow them to access the grid
efficiently. Part of this problem is distributing data
for files sizes on the GB scale.</li>
<li> FNAL has several experiments on the scale of GlueX
that are interested in using the OSG.</li>
<li> OSG user support has been restructured. There is a
person dedicated to helping smaller groups, in
particular consulting about how to deploy the groups
resources and aiding them in climbing the learning
curve.</li>
<li> There was discussion on the next-generation SRM or
SRM replacement. The thinking is to do something
HTTP-based.</li>
<li> There has been interest in deploying temporary grid
sites on the Amazon cloud. Amazon is issuing grants to
groups that are interested, especially those that
develop tools for others to use. The grants are in the
form of cloud computing time.</li>
</ul>
<br>
<span class="mw-headline" id="Topics_Deferred">Topics
Deferred</span><br>
<ol>
<li> GEANT4 conversion</li>
<li> Compute-efficient electromagnetic background
inclusion</li>
</ol>
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<li id="lastmod"> This page was last modified on 2 April 2015,
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<br>
-- Mark M. Ito, Jefferson Lab, <a class="moz-txt-link-abbreviated" href="mailto:marki@jlab.org">marki@jlab.org</a>, (757)269-5295
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