RAL Tier1 Experiments Liaison Meeting

Wednesday 20 Nov 2024, 13:30 → 15:50 Europe/London

Access Grid (RAL R89)

13:30 → 13:31 Experiment Operational Issues

13:35 → 13:45 VO-Liaison ATLAS

Speakers: Brij Kishor Jashal (TIFR, RAL, IFIC), Jyoti Prakash Biswal (Rutherford Appleton Laboratory)

Meeting notes ATLAS liason Brij

13:45 → 13:55 VO Liaison CMS

Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

Some failures on the AAA machines - Katy restarted the services again on Tuesday night and SAM tests are green again since then. 

Intermittent failures on ARC-CE tests seem more regular in the last weeks.

Still some problems with passing token/CE tests. It appears to have worked once, but not again!

Job performance is good.

13:55 → 14:05 VO Liaison LHCb

Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)

Tickets:

• Problems with VO-box access (GGUS 168905)
  • A sandbox that introduces FQAN-based authentication is applied to the host
    • May need some "linting" though

 

Operational issues:

• Faulty changed rolled-out to preprod farm, breaking xrootd-proxy
  • Fixed the next day
• There was a spike of failed uploads from RAL WNs to CERN yesterday
  • Mostly affected RAL->CERN channel, but other sites have a few failures as well, so probably not our problem.

14:10 → 14:20 VO Liaison ALICE

Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)

14:20 → 14:30 VO Liaison LSST

Speaker: Timothy John Noble (Science and Technology Facilities Council STFC (GB))

GSTSM-199 Still not dealt with, passed on to Tom Birkett, awaiting his input

 

Last component (IngestD) to be deployed and configured at RAL tomorrow afternoon - after that site is ready to accept data from LSST and automatically be ingested for analysis workflows

 

Database team talked to about the Butler (metadata server), and they are happy to take over from our dev setup - and being worked on

 

 

 

14:30 → 14:40 VO Liaison APEL

Speaker: Thomas Dack

14:45 → 14:55 WP-D - GPU, Data Management, Other

Speakers: Brian Davies (Lancaster University (GB)), Darren Moore

15:00 → 15:01 Major Incidents Changes

15:05 → 15:15 Summary of Operational Status and Issues

Speakers: Brian Davies (Lancaster University (GB)), Darren Moore

Weekly Report 20 November 2024.docx

Weekly Report 20 November 2024.pdf

15:20 → 15:21 AOB

15:22 → 15:32 Any other Business

Speakers: Brian Davies (Lancaster University (GB)), Darren Moore