RAL Tier1 Experiments Liaison Meeting

Wednesday 19 Jun 2024, 13:30 → 15:00 Europe/London

Access Grid (RAL R89)

14:00 → 14:01 Major Incidents Changes

14:05 → 14:06 Summary of Operational Status and Issues

Speakers: Brian Davies (Lancaster University (GB)), Darren Moore, Kieran Howlett (STFC RAL)

Weekly Report 19 June 2024.docx

Weekly Report 19 June 2024.pdf

14:10 → 14:11 Experiment Operational Issues

14:15 → 14:16 VO Liaison CMS

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

A bad week for SAM tests:

CMS did not respect the tape downtime on webdav (only on xrootd). The downtimes are only declared 'natively' on xrootd, with webdav as a 'child'. CMS need both protocols to be fully declared for Antares. SAM tests were corrected - but I was informed this has happened before. 

CMS was also sensitive to Echo/gateway issues we are currently experiencing since Wed. CMS SAM tests have red days since Thursday until now. Katy brought CMS out of drain on Monday. CMS is back in drain again today.

For the new AAA proxy machine - now being tested by SAM tests. Katy still to add to monitoring in Vande (also Shoveler once we have the production instance).

AAA machines needed services restarting again. We had a ticket from a user unable to access data. 

The cms-rucio-services machine needs VOMS infrastructure removing. It appears the auth has already stopped. Katy has started approving tape transfers and defining tape families by hand. https://stfc.atlassian.net/jira/servicedesk/projects/STAH/queues/custom/263/STAH-91   UPDATE - temporarily fixed by updated the host to recognise use the CMS IAM VOMS server. This machine still needs upgrading etc. but will be done after other, more urgent tasks.

 

14:20 → 14:21 VO-Liaison ATLAS

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

ATLAS Liaison notes

14:25 → 14:26 VO Liaison LHCb

Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)

14:30 → 14:33 VO Liaison LSST

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

14:35 → 14:36 VO Liaison APEL

Speaker: Thomas Dack

14:39 → 14:40 VO Liaison Others

Speakers: Alexander Rogovskiy (Rutherford Appleton Laboratory), Brij Kishor Jashal (RAL, TIFR and IFIC), Jyoti Prakash Biswal (Rutherford Appleton Laboratory), Katy Ellis (Science and Technology Facilities Council STFC (GB))

Katy: Had an email from Sophie King from T2K asking about tape, disk, space they are using. Also about how deletions work with tape. They would like to do some archiving and deletions. I wrote back to say please go ahead and explaining how it works with tape deletions/repack etc. 

Also to be followed up - SNO+ issue of very short jobs. They have not run more than one core since we informed them of this. Katy to send an email

14:45 → 14:46 AOB

14:50 → 14:51 Any other Business

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