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OSG Technology Area Meeting, 13 May 2019

Coordinates: Conference: 719-284-5267, PIN: 57363;
Attending: BrianL, Derek, Diego, Edgar, Marco Mambelli, Marian, Mat, TimT, Zhenzhou


  • Next meeting 5/28 (due to HTCondor Week and Memorial Day)
  • Zhenzhou, our new student, starts Topology work today

Triage Duty

  • This week: BrianL
  • Next week: Carl
  • 4 (-2) open FreshDesk tickets
  • 1 (+0) open GGUS ticket


# of tickets Δ State
161 -1 Open
24 -3 In Progress
7 +4 Ready for Testing
0 +0 Ready for Release

OSG Software Team

  • XRootD 4.10.0 RC 1 released so we need to turn a build around
  • RHEL 8 has been released; unsure about the timeline for CentOS 8
  • Stable stash-cache image has been tagged
  • Hosted-CE improvements:
    • Add ability to manage WN software/data from the CE host
    • Improve operational flexibility by managing submit host configuration from the CE
  • Internal OSG Site installation exercise on 5/24 at 9am CDT


  • What are the limits on the RHEL developer license? TimT said unlimited VMs on a single host
  • Discussion about GLOW stash cache/origin on k8s

Support Update

  • NET2 (Carl): Continuing work on the custom SGE probe to fix missing accounting records
  • Purdue (Marco): privileged singularity is not accepting signals even after dropping privs. Suggested solution is to use unprivileged singularity.
  • SuperMIC (Edgar): Troubleshooting issues with CVMFS
  • SWT2 (BrianL): the blahp does not refresh proxies after 24h on WNs and this has bitten ATLAS. Have a fix that worked for SWT2 included in a new build.
  • UCSD (Diego): Troubleshooting issues with using chirp within Singularity containers. Jaime has suggested using the python client.

OSG Release Team

3.4.30 Δ Status
10 +0 Open
10 +1 In Progress
5 +3 Ready for Testing
0 +0 Ready for Release
25 +4 Total
  • OSG 3.4.30 - This Week
    • Ready for Testing
      • xrootd-voms-plugin 0.6.0
      • osg-se-hadoop for EL6
      • osg-test 3.0.0
  • Data - Fold into 3.4.30 release
    • VO Package v91
  • Operations
    • Nothing
  • Contrib
    • Nothing


  • AI (TimT): Take over osg-sites mailing list for community testing, populate it with Topology admin contacts, and write an introductory email
  • Patched BLAHP expected to drive out release this week

OSG Investigations Team

  • Working with Operations on monitoring. Added Hosted-CE's monitoring. Continuing to refine.
  • Also working with operations investigating OAuth with co-manage.
  • Accounting audit is continuing in collaboration with ATLAS. Pretty much done.
  • Updates in perfsonar format caused data pipeline to fail. Some emergency development performed.
  • StashCache PEARC paper officially accepted, very good reviews.
  • Worried about APEL accounting blackbox.
  • Adapting LIGO style cvmfs + singularity.
  • Factory monitoring to GRACC.




None this week