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    RAL Tier1 Experiments Liaison Meeting

    → Europe/London
    Access Grid (RAL R89)

    Access Grid

    RAL R89
      • 13:38 → 13:39
        Major Incidents Changes 1m
      • 13:39 → 13:40
        Summary of Operational Status and Issues 1m
        Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))
        RT1EL-20200617.docx
        RT1EL-20200617.pdf
      • 13:40 → 13:41
        GGUS /RT Tickets 1m

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

      • 13:41 → 13:42
        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

      • 13:42 → 13:43
        Experiment Operational Issues 1m
      • 13:44 → 13:45
        VO-Liaison ATLAS 1m
        Speakers: James William Walder (Science and Technology Facilities Council STFC (GB)), Dr Tim Adye (Science and Technology Facilities Council STFC (GB))
        20200612_RAL_DirectIO_UA_test1.pdf

        ATLAS considering to switch to single FTS instance:
        (i.e. to drop RAL and BNL); motivation: single instance has full 'oversight' over transfers (apparently can be useful in Data Carousel); faster upgrade cycle for TPC, for example.

        Progress on TPC; AD to find someone to help implement checksum; in progress ? TA only limited time currently. Nice to show some progress for next DOMA TPC meeting (next weds).

         

         

      • 13:46 → 13:47
        VO Liaison CMS 1m
        Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

        Fairly stable week. No particular operational issues. Very small number of Offsite reads for CMS jobs this week, so no issues there. Efficiency is in its 'normal' region - ~20% lower than other T1s. Some job failures from Analysis and Production jobs.

        I restaged a number of test files for failing Debug Phedex transfers from RAL buffer.

      • 13:48 → 13:49
        VO Liaison LHCb 1m
        Speaker: Raja Nandakumar (Science and Technology Facilities Council STFC (GB))

        LHCb:

        1. Issue with number of running jobs 
          • Since last Friday/Saturday 
          • Possibly caused by an update last Thursday?
          • James and Jose working on it
            • Temporary increase for LHCb fairshare?
        2. Problem streaming from echo 
          • Ongoing issue with WNs
          • Tom and Jose working on it
        3. Testing ARC6 test ce
          • Problem with LHCb test system 
          • Dirac developer (Federico) looking at it
            • Jobs running but failing due to authentication issues within latest test DIRAC version
        4. Some issues in 3rd party transfers using RAL FTS
          • Same transfers fine on CERN FTS
          • https://ggus.eu/?mode=ticket_info&ticket_id=147420

        DUNE:

        Nothing to report.

      • 13:52 → 13:53
        VO Liaison Others 1m
      • 13:53 → 13:54
        Experiment Planning 1m
      • 13:54 → 13:55
        Dune/protoDune 1m
      • 13:55 → 13:56
        Euclid 1m
      • 13:56 → 13:57
        SKA 1m
      • 13:57 → 13:58
        AOB 1m
      • 13:58 → 13:59
        Any other Business 1m
        Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))