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RAL Tier1 Experiments Liaison Meeting

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Access Grid (RAL R89)

Access Grid

RAL R89
RAL Tier1 Experiments Liaison Meeting
Zoom Meeting ID
66811541532
Host
Alastair Dewhurst
Useful links
Join via phone
Zoom URL
    • 13:44 → 13:45
      Experiment Operational Issues 1m
    • 13:45 → 14:05
      Site Operations 20m
    • 14:05 → 14:10
      ATLAS Operations Report 5m
      Speakers: Brij Kishor Jashal (Rutherford Appleton Laboratory), Jyoti Prakash Biswal (Rutherford Appleton Laboratory)
      ATLAS liason meeting notes Brij

      Brij at ATLAS S&C currently

    • 14:10 → 14:15
      CMS Operations Report 5m
      Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

      Slow reads for jobs reported last week turned out to be Merge jobs reading remotely, and doing so extremely slowly. This turned out to be a config error from Tier 0 and has now been fixed.

      AAA machines (the older ones gw10 and 11) have had firmware updated. Diagnostics show both machines are now ok. SAM tests are green. 

    • 14:15 → 14:20
      LHCb Operations Report 5m
      Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)
      jobs.png
      transfers_from.png
      transfers_to.png

      Operational issues:

      • MC job pressure stays OK since last Thursday
        • No drains since then as a result
      • VO-box lost IPv6 connectivity last Thursday
        • After removal of one of the routers from production, see alice report
      • Spike of failed WGProduction jobs last night
        • Buggy production, not our fault

       

      News:

      • Token-based ETF tests for storage deployed to preprod
    • 14:20 → 14:25
      ALICE Operations Report 5m
      Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)
      • Loss of IPV6 connectivity for the Alice VO-box (GGUS:1000579)
        • one of the old network exit routers was removed from production last Thursday
        • the traffic was supposed to go via the backup one, but it did not work for IPv6
        • The affected router was then removed to prod, that fixed (mitigated) the problem

       

    • 14:25 → 14:30
      LSST Operations Report 5m
      Speakers: Mathew Sims, Timothy Noble (Science and Technology Facilities Council STFC (GB))
    • 14:30 → 14:31
      Tier-1 Projects 1m
    • 14:45 → 14:55
      Anatares Upgrade 10m
      Speakers: George Patargias, Thomas Byrne
    • 14:55 → 15:05
      XRootD Development 10m
      Speakers: Alexander Rogovskiy (Rutherford Appleton Laboratory), Jyothish Thomas (STFC)
    • 15:05 → 15:15
      Utilizing GPUs 10m
      Speakers: Jyoti Prakash Biswal (Rutherford Appleton Laboratory), Thomas Birkett
    • 15:15 → 15:20
      SSD Storage Evaluation 5m
    • 15:20 → 15:25
      Echo deployment 5m
    • 15:30 → 15:31
      AOB 1m
    • 15:31 → 15:40
      Summary of Operational Status and Issues 9m
      Speakers: Brian Davies (Science and Technology Facilities Council STFC (GB)), Darren Moore
      Weekly Report 24 September 2025.docx
      Weekly Report 24 September 2025.pdf
    • 15:40 → 15:45
      Any other Business 5m
      Speakers: Brian Davies (Science and Technology Facilities Council STFC (GB)), Darren Moore