RAL Tier1 Experiments Liaison Meeting

Name: RAL Tier1 Experiments Liaison Meeting
Start: 2024-06-26T13:30:00+01:00
End: 2024-06-26T15:00:00+01:00
Location: RAL R89

Wednesday 26 Jun 2024, 13:30 → 15:00 Europe/London

Access Grid (RAL R89)

Access Grid

RAL R89

66811541532

Alastair Dewhurst

Join via phone

- 14:00 → 14:01
  
  Major Incidents Changes 1m
- 14:05 → 14:06
  
  Summary of Operational Status and Issues 1m
  
  Speakers: Brian Davies (Lancaster University (GB)), Darren Moore, Kieran Howlett (STFC RAL)
  
  Weekly Report 26 June 2024.docx
  
  Weekly Report 26 June 2024.pdf
- 14:10 → 14:11
  
  Experiment Operational Issues 1m
- 14:15 → 14:16
  
  VO Liaison CMS 1m
  
  Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))
  
  Not great for SAM tests, but the mitigation on gateways meant the weekend was green. Katy brought CMS out of drain on Monday. On Tuesday there were errors due to AAA failures after Rocky8 upgrades. AAA was fixed with service restarts.
  
  CMS appears to have respected the tape downtime (Monday) on webdav this time.
  
  For the new AAA proxy machine, Katy still to add to monitoring in Vande (also Shoveler once we have the production instance).
  
  Discussion with CMS about IPv6 connectivity to AAA machines.
  
  Tape approvals are working ok with the temporary fix.
  
  Asked CMS to move job submission to EL9 queue only - this has not happened. I'm following up.
- 14:20 → 14:21
  
  VO-Liaison ATLAS 1m
  
  Speakers: Brij Kishor Jashal (RAL, TIFR and IFIC), Jyoti Prakash Biswal (Rutherford Appleton Laboratory)
  
  ATLAS Liaison notes
- 14:25 → 14:26
  VO Liaison LHCb 1m
  
  Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)
  
  jobs.png
  
  transfers_from.png
  
  transfers_to.png
  Tickets:
  
  ECHO issues
  
  Most of the failures were caused by xrootd bug, mitigated by downgrading advertised protocol version
  
  Ticket closed
  
  Operational issues:
  
  Stratum-1 is down
  
  That causes problems for other sites, not RAL-T1
  
  Any news on xrootd bug follow-up?
  
  News:
  
  More vector read tests submitted this week
  
  These tests were not so successfull as previous ones, some failures were present
- 14:30 → 14:33
  
  VO Liaison LSST 3m
  
  Speaker: Timothy John Noble (Science and Technology Facilities Council STFC (GB))
- 14:35 → 14:36
  
  VO Liaison APEL 1m
  
  Speaker: Thomas Dack
- 14:39 → 14:40
  
  VO Liaison Others 1m
  
  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 1m
- 14:50 → 14:51
  
  Any other Business 1m
  
  Speakers: Brian Davies (Lancaster University (GB)), Darren Moore