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<p>Folks,</p>
<p>Please find the notes below and at</p>
<p>
<a class="moz-txt-link-freetext" href="https://halldweb.jlab.org/wiki/index.php/GlueX_Containers_Meeting,_April_6,_2018">https://halldweb.jlab.org/wiki/index.php/GlueX_Containers_Meeting,_April_6,_2018</a></p>
<p> -- Mark</p>
<p>____________________</p>
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<h1 id="firstHeading" class="firstHeading" lang="en"><span
dir="auto">GlueX Containers Meeting, April 6, 2018</span></h1>
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<h3><span class="mw-headline" id="Notes">Notes</span></h3>
<p>Present: Beni Zihlmann, David Lawrence, Richard Jones,
Mark Ito, Thomas Britton
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<ul>
<li> Mark reported a problem using our standard
Singularity container on ifarm. Singularity there has
auto-bound directory inconsistent with our container.
Should not be a fundamental problem, but not
understood at present.</li>
<li> David got around the need for ROOT access to build
a Singularity container on the ifarm by routing the
build through SingularityHub. The container there is
in turn tied to a Docker project (though the
singularity build is done on demand at present). And
Docker is tied to a GitHub-resident Dockerfile (of
course!).</li>
<li> David was able to run a desktop session in the
container via a web browser using a no-vnc server, as
well as using VNC using the yes-vnc server. [?]</li>
<li> Thomas repeated his report, given at the Offline
Meeting, on using the OSG for Monte Carlo. Richard has
several comments:
<ul>
<li> bringing random trigger files along with the
job might be slowing job start-up</li>
<li> condor_shadow processes start when the job
starts on the remote node</li>
<li> Condor supports batch submission. Thomas will
explore using this in MCwrapper.</li>
<li> batch submission makes it easier to recall
thousands of jobs should the need arise</li>
</ul>
</li>
<li> Mark: update of the CVMFS-resident GlueX software
stack with new versions has gone swimmingly.</li>
<li> Mark: no progress with including XROOTD as part of
said stack</li>
<li> we will meet in a week</li>
</ul>
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