RAL Tier1 Experiments Liaison Meeting

Wednesday 24 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 24 January 2024.docx

Weekly Report 24 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))

14:16 → 14:17 VO-Liaison ATLAS

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

• DC24 pre-tests:
  • Tried w/ --ipv4 flag, but all got directed to IPv6!
  • w/ ceph-gw8: transfer limit could have been increased to 200, again?
  • Link to notes/slides (evolving). 

 

• Rucio:
  • Removed token support for RAL-LCG2. 
  • Combination of FTS verbose logging and XRootD-based storages results in the token being leaked in the logs (which are accessible to many).
  • The destination token contains the storage.modify scope, which makes this a serious security concern.
  • There shall be no use of tokens for such storages until the situation is resolved (dCache, StoRM and EOS appear to be fine).
  • The other site affected -- LANCS.

 

•    All access to the FTS transfer logs of fts3-atlas.cern.ch are temporarily blocked (includes the pilot instance).
  • Access is only provided to the limited list of certificate subjects.
  • All with existing FTS config privileges + CRCs are now included in this list.

 

• HammerCloud:
  • The stress template (1257) dealing with HEPSCORE has disappeared now!
  • The 1192 template has mostly "s" starting today (most sites exhibit this behaviour, some also have "0"). 

 

• Workernodes:
  • There are 425 jobs @UNKNOWN in the morning. This is a large number. 
  • Link -- ddm, 100: Setupper._setupSource() could not register dispatchDBlock with Details: File mc23_13p6TeV:HITS.35206906._003793.pool.root.1 is LOST and cannot be attached.

 

• Jamboree UK Cloud talk -- speaker confirmation? 

14:20 → 14:21 VO Liaison LHCb

Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)

pre_dc24_summary.pdf

LHCb:

• Tests in progress for checksum library
• Vector read setup is deployed to lcg2345
  • "prefetch off" on our side, timeout increase on LHCb site
• ETF tests for el[89]: python interpreter issue fixed, others came up
  • `cvmfs2` executable is not available in the containers

Alice:

• TPC issues are still present after upgrade to EOS 5.
• enpdoint for ALICE::RAL::CTA_TESTchanged from antares-dev to antares-preprod

 

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))