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    LCG Experiment Coordination Meeting

    → Europe/Zurich
    28-R-015

    28-R-015
    Description
    Coordination meeting between LCG service and LHC experiments, focussing on issues for the coming weeks / months.

    Subscribe to lcg-experiment-coordination@cern.ch to be kept informed...

    To join the call, do one of the following:
    a. Dial +41227676000 (Main) and enter access code 0166222, or
    b. To have the system call you, click here: https://audioconf.cern.ch/call/0166222

    (Leader code is 0166111)

      • 14:30 → 14:45
        Status of WLCG Q1 Tx-Ty Transfer Milestones - aka Multi-VO tests 15m
        1. Demonstrate Tier0-Tier1 data export at 65% of full nominal rates per site using experiment-driven transfers

          Mixture of disk / tape endpoints as defined by experiment computing models, i.e. ~30% tape for ATLAS; transfers driven by experiments

          Period of at least one week; daily VO-averages may vary (~normal)

        2. Demonstrate Tier0-Tier1 data export at 50% of full nominal rates (as above) in conjunction with T1-T1 / T1-T2 transfers

          Inter-Tier transfer targets taken from ATLAS DDM tests / CSA06 targets

        3. Demonstrate Tier0-Tier1 data export at 35% of full nominal rates (as above) in conjunction with T1-T1 / T1-T2 transfers and Grid production at Tier1s

          Each file transferred is read at least once by a Grid job

          Some explicit targets for WMS at each Tier1 need to be derived from above

        Analysis of errors
        Multi-VO results from week of March 26th
      • 14:45 → 15:00
        FTS 2.0 pilot service and schedule / actions for move to production 15m
        FtsClientCompatabilityMatrix
      • 15:00 → 15:15
        FTS service monitoring requirements 15m
        From CMS "top 5" issues presented to MB in Prague:
        • transfers and queues monitor
        • backup servers
        • heartbeat and similar ”service-is-up" monitoring

        Can we come to a common requirement / proposal?

      • 15:15 → 15:25
        Up-coming service interventions 10m

        Possible slots prior to start of Dress Rehearsals and Pilot LHC run:

        • Slot in June, e.g. June 11 (following weeks are CMS / ATLAS weeks respectively).
        • Week of CHEP 2007?? (1st week of September)

        Foreseen interventions:

        • Move of CASTOR DBs to better h/w (to be done by VO - service interruption involved).
        • Deployment of new CASTOR LSF plug-in
        • Oracle Critical Patch updates
          • 17 April 2007
          • 17 July 2007
          • ???16 October 2007???
          • 15 January 2008
      • 15:25 → 15:30
        AOB 5m