RAL Tier1 Experiments Liaison Meeting

Wednesday 3 Jul 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 3 July 2024 .docx

Weekly Report 3 July 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 peaceful week for SAM tests. Job performance a bit variable, but only in line with other CMS sites - some issues being investigated on the CMS side.

For the new AAA proxy machine, Katy still to add to monitoring in Vande (also Shoveler once we have the production instance). What is Angular?

Discussion with CMS about IPv6 connectivity to AAA machines. 

CMS job submission to use EL9 queue only - actually this may be working afterall. I didn't realise the label in the monitoring had not changed from 'el7' to 'el9' but when I looked at logs on ARC-CE02 I could see EL9 was being used.

Transfer failures to Antares from both CERN and Echo since Tuesday evening - investigating.

14:20 → 14:21 VO-Liaison ATLAS

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

Meeting notes ATLAS liason

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))

Jobs scripts still being investigated by me for issues and how to resolve

 Script uses file protocol to access "directory" when it needs to either be xrootd or webdavs to access echo - Perhaps a config mismatch that I need to find

 

Planning to deploy LSST communication software on K8S cluster - currently the Rucio one, but plans to have LSST own cluster for isolation

 

LSST were running scaling test type work
104,000 rules from SLAC to IN2P3 (~400MB/s)

Then 34,400 files from:

SLAC to RAL (~400MB/s, peaks of ~1000MB/s)

SLAC to LANCS (~300MB/s)

IN2P3 to RAL (~950MB/s)

IN2P3 to LANCS (~600MB/s)

 

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))

14:45 → 14:46 AOB

14:50 → 14:51 Any other Business

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