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RAL Tier1 Experiments Liaison Meeting

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RAL R89
RAL Tier1 Experiments Liaison Meeting
Zoom Meeting ID
66811541532
Host
Alastair Dewhurst
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    • 13:00 → 13:01
      Major Incidents Changes 1m
    • 13:01 → 13:02
      Summary of Operational Status and Issues 1m
      Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB)), Kieran Howlett (STFC RAL)
      Weekly Report 28 June 2023.docx
      Weekly Report 28 June 2023.pdf
    • 13:02 → 13:03
      GGUS /RT Tickets 1m

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

    • 13:04 → 13:05
      Site Availability 1m

      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

    • 13:05 → 13:06
      Experiment Operational Issues 1m
    • 13:15 → 13:16
      VO Liaison CMS 1m
      Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

      Katy is investigating tape transfers that failed earlier in the week. Suspects that it's related to data trying to arrive without asking for 'approval' in Rucio - hence not having tape family assigned. Nevertheless, Mihai wanted to get feedback from the xrootd developers on the error message seen. There were also a couple of other curiosities Katy followed up with CMS DM.  (e.g. was 'cancel-requests' functionality broken? - answer: no)

      James W did a test on one of the AAA proxies (ceph-gw10) to see if the token tests would 'just work' since he already has a solution for davs. However, it seems that the xrootd solution is different to the davs solution and further work is needed to cater for tokens with an xrootd endpoint. Katy had the xrootd test suite added to the test GW ceph-dev-gw4 and JW will look at making a solution when he finds time.

      CMS saw a slight drop in running cores this morning due to the WN patching campaign, but appear to be back to full strength again now. 

    • 13:16 → 13:17
      VO-Liaison ATLAS 1m
      Speakers: James William Walder (Science and Technology Facilities Council STFC (GB)), Jyoti Prakash Biswal (Rutherford Appleton Laboratory)
    • 13:20 → 13:21
      VO Liaison LHCb 1m
      Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)
      slides.pdf

      Tickets:

      • Vector read:
        • See slides attached
      • host certificate on the vobox
        • Still with the security team
      • Job memory  limits
        • Batch admins are investigating, it might be that the lack of memory on the old WNs is the cause
           

      News:

      • LHCb is using arex at RAL for job submission now
    • 13:25 → 13:28
      VO Liaison LSST 3m
      Speaker: Timothy John Noble (Science and Technology Facilities Council STFC (GB))
    • 13:30 → 13:31
      VO Liaison Others 1m
    • 13:31 → 13:32
      AOB 1m
    • 13:32 → 13:33
      Any other Business 1m
      Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))