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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-20200715.docx
        RT1EL-20200715.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))
        Tier1Fairshares.pdf

        * RT: #296706: Optimise XRootD checksums for TPC transfers from ECHO
        * RT: #313743: Update of SRR to v6 required specs
        * AD to update Corepower 

        * lcg2344: job failures due to missing xrootd proxies? Fixed now.

        * New data reprocessing Campaign:
        Very similar in size to that run in early 2020; will also follow 'Data Carousel' model
        Full run-2;  starting with 2018 (likely in two phases) and working backwards
        Should start ~ tomorrow.

         

        * TPC Http:
        Patched version;  can do a curl get using gridmap-file
        Can write to test GW via FTS, but in --strict-copy mode (i.e no checksum, validation checking).
        Patches / work / decisions need to be moved back up into respective packages.
         

         

         

      • 13:46 → 13:47
        VO Liaison CMS 1m
        Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))
        Screen Shot 2020-07-15 at 13.51.15.png
        Screen Shot 2020-07-15 at 13.52.23.png
        Screen Shot 2020-07-15 at 14.26.38.png

        Tests were good, but there was a big dip in efficiency across the weekend. Appears to coincide with high data input and very high read time. 

        I am waiting on the CMS WNs (mini batch farm) to come back to life. It seems the proxy dockers have disappeared. Jose may need some help bringing these back?

        I have been investigating hs06 reporting. I've not got a full set of evidence yet, but it's looking suspicious.

        George P has been upgrading the AAA RAL redirector. We have some issues. IPv6 public address was missing but has now been added. Still unable to xrdcp a file from it, so we continue.

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