Swiss Grid Operations Meeting on 2015-12-10

• Date and time: 14:00
• Place: Vidyo (room: Swiss_Grid_Operations_Meeting, extension: 109305236)
• External link: http://vidyoportal.cern.ch/flex.html?roomdirect.html&key=gDf6l4RlIAGN
• Phone gate: From Switzerland: 0227671400 (portal) + 109305236 (extension) + # (pound sign)
• IRC chat: irc:gridchat.cscs.ch:994#lcg (ask pw via email)

Site status

CSCS

• Xxx

PSI

• Xxx

UNIBE-LHEP

• Operations
  • ce01 cluster re-installation virtually completed (about 900 worker cores running, 120 still to be installed, 256 awaiting delivery)
  • Started with a simple slurm setup (slurm-15.08.1) in order to cut down on commissioning time: one partition with
    

    SelectType=select/cons_res
    SelectTypeParameters=CR_CPU_Memory
    MemLimitEnforce=no

  • We don't over-subscribe memory anymore: nodes don't starve and crash
  • Memory usage is properly accounted for in 15.08 (PSS): no jobs killed on (artificial) over-limit of "vmem" (now the full address space reserved by a process, no what's allocated or used)
  • Comparing job fail rates between ce01 and ce02 (still on old SGE) has convinced me to rush the re-installation of ce02 (started earlier today)
• ATLAS specific operations
  • Stable worflows by ATLAS (very large improvement since beginning of run II)
  • Stuck with the implementation of monthly dumps of the namespace on the DPM SE:
    • headnode on SLC5: the dump script does not work and also generating a valid proxy is problematic
    • decided to push the re-deployment of the head node on SLC6
    • legacy config tool (YAIM) no longer supported
    • puppet based configuration, got the right docs at the DPM workshop earlier this week in CERN
    • tests ongoing on a pps VM
    • also complicated by the fact my site-bdii is still co-located with the DPM head node
    • this will likely be the first task for 2016

UNIBE-ID

• Xxx

UNIGE

• Xxx

NGI_CH

• Xxx

Other topics

• Proposal to add to this meeting: T2 monthly pledge review (CSCS, UNIBE); GGUS open ticket review
• Topic2

A.O.B.

Attendants

• CSCS:
• CMS:
• ATLAS:Gianfranco
• LHCb:
• EGI:Gianfranco

Action items

• Item1