[Halld-offline] Containers Meeting Notes, April 13, 2018

[Mark Ito]

Folks,

Please find the notes below and at

https://halldweb.jlab.org/wiki/index.php/GlueX_Containers_Meeting,_April_13,_2018 
.

   -- Mark

_______________


    GlueX Containers Meeting, April 13, 2018, Notes

Present: Richard Jones, Mark Ito, Thomas Britton, Sean Dobbs, Zisis 
Papandreou

  * At Sean's suggestion, Mark wrote a HOWTO
    <https://halldweb.jlab.org/wiki/index.php/HOWTO_use_the_GlueX_Singularity_Container>
    on...well...how to use the current GlueX Singularity container to
    access recent builds of the software without having to do the build.
      o The current version *assumes* no CVMFS partition on the local
        node, despite this being the recommended method of accessing the
        software...patience y'all!
      o Mark will note that the location of "/group/halld" on Oasis is
        /cvmfs/oasis.opensciencegrid.org/gluex/group/halld in a future
        version of the HOWTO.
  * There are two versions of the container at present:
     1. for when CVMFS is present (i. e.,
        /cvmfs/singularity.opensciencegrid.org/markito3/gluex_docker_devel:latest)
     2. for when CVMFS is not there
      o This was only necessary because we have been invoking OSG jobs
        in the mode where the user is automatically placed in the
        container. If we invoke the container by hand, the bind option
        can be controlled and two containers are no longer necessary.
        Mark and Thomas will work on this.
  * Mark has started looking at XROOTD
      o building from source directly from a clone of the GitHub repository
      o documentation on main site is a bit obtuse; pointers to
        beginner-level docs appreciated
  * The MC Thomas generated last week on the OSG using the GlueX
    Singularity container has been used to demonstrate that the rate
    dependence of reconstruction efficiency seen in the simulation
    roughly matches that seen in the data
    <https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=3583>.
  * Thomas is gearing up to start a major bggen campaign on the OSG.
      o Requested by the MIT group for their B boson analysis.
      o Statistics to match 50% of the golden period of 2016.
      o Will ship random triggers along with each job using the Condor
        mechanism. If this proves to be a bottleneck, we can explore
        using Richard's XROOTD servers at UConn for this purpose.
      o Richard noted that statistics on the project would be
        interesting, e. g. the number of OSG CPU hours consumed per unit
        time as a function of time.
  * Action items:
     1. cvmfs bind instructions
     2. go to self-serve singularity launch on OSG
     3. fix issue on ifarm with singularity

Retrieved from 
"https://halldweb.jlab.org/wiki/index.php?title=GlueX_Containers_Meeting,_April_13,_2018&oldid=86417"

  * This page was last modified on 13 April 2018, at 13:58.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/halld-offline/attachments/20180413/6bf204f0/attachment.html>