RAL Tier1 Experiments Liaison Meeting

Wednesday 31 Jan 2024, 13:30 → 15:00 Europe/London

Access Grid (RAL R89)

14:00 → 14:01 Major Incidents Changes

14:01 → 14:02 Summary of Operational Status and Issues

Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB)), Kieran Howlett (STFC RAL)

Weekly Report 31 January 2024.docx

Weekly Report 31 January 2024.pdf

14:02 → 14:03 GGUS /RT Tickets

https://tinyurl.com/T1-GGUS-Open
https://tinyurl.com/T1-GGUS-Closed

14:04 → 14:05 Site Availability

https://lcgwww.gridpp.rl.ac.uk/utils/availchart/

https://cms-site-readiness.web.cern.ch/cms-site-readiness/SiteReadiness/HTML/SiteReadinessReport.html#T1_UK_RAL

http://hammercloud.cern.ch/hc/app/atlas/siteoverview/?site=RAL-LCG2&startTime=2020-01-29&endTime=2020-02-06&templateType=isGolden

14:05 → 14:06 Experiment Operational Issues

14:15 → 14:16 VO Liaison CMS

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

Last week Katy was on leave.

Last week tokens were rolled back due to the token itself appearing in FTS logs. A fix is being sought in XRootd.

Thurs/Fri SAM tests are red due to an overnight issue with Echo - adding new hardware caused an issue again. CMS was in drain over the weekend, came back monday morning.

Traffic appears saturated on the OPN to the batch farm again - can we show if CMS is really the cause of this?

CMS hoping to enable tokens on Rucio in the next days (at some sites at least).

CMS planning one more large scale test on Tuesday next week. 

14:16 → 14:17 VO-Liaison ATLAS

Speakers: James William Walder (Science and Technology Facilities Council STFC (GB)), Jyoti Prakash Biswal (Rutherford Appleton Laboratory)

• UK Cloud jamboree talk inputs. 
  • Topics.

 

• Access to FTS transfer logs (CERN ATLAS and Pilot instances):
  • Currently restricted to a very select set of individuals.
  • The developers are actively working on masking the query component of redirect URLs.

 

• RAL could use the tokens again (given the current situation and future FTS plans).

 

• LHCOPN/LHCONE librenms access.

 

• 2023Q4 quarterly report was submitted today.

14:20 → 14:21 VO Liaison LHCb

Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)

LHCb Operational issues:

• Failed pilots, because of a faulty WN
• Issues with ECHO after new hardware addition.
• Checksum ticket.
  • CC is cheduled for tomorrow
• Spikes of failed jobs, seems llike a lack of memory on WN proxy.

ALICE issues:

• TPC issues is still under investigation, no significant results.

14:25 → 14:28 VO Liaison LSST

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

14:30 → 14:31 VO Liaison Others

14:31 → 14:32 AOB

14:32 → 14:33 Any other Business

Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))