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Southgrid Technical Meeting

Southgrid Technical Meeting. Pete Gronbech: 16 th March 2006 Birmingham. Present. Pete Gronbech – Oxford Rosario Esposito - Oxford Chris Brew – RAL PPD Yves Coppens – Birmingham Winnie Lacesso - Bristol. Agenda. 10:30 Start Pete + Others 12pm Lunch Interactive Workshop!!

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Southgrid Technical Meeting

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  1. Southgrid Technical Meeting Pete Gronbech: 16th March 2006 Birmingham

  2. Present • Pete Gronbech – Oxford • Rosario Esposito - Oxford • Chris Brew – RAL PPD • Yves Coppens – Birmingham • Winnie Lacesso - Bristol

  3. Agenda • 10:30 Start • Pete + Others • 12pm Lunch • Interactive Workshop!! • 3:15pm Coffee ?? • 4:20pm Finish

  4. Agenda Topics • LCG-2_7_0 • Experiences from Yves & Chris • Plans for Oxford and Cambridge • Monitoring • Network Monitoring Box • Ganglia at Bristol once webserver ready. • Ganglia mods for VO’s Help again from Chris? • Nagios anyone? • Pakiti • aid • tripwire?? • swatch /ranger • SC4 • T2 workshop Who is going? • Throughput tests –Bristol and Cam repeat tests at end of Month • Network connectivity at Bristol/ Cambridge at 1Gbps ?? Next week Bristol, Cam ?? • UI FTS client works out of the box. • Storage security challenge?? Do we know which logs to look at or even are the SRM’s doing enough logging. • Re security Challenge a Best practice how to should now be made available on the wiki….

  5. Agenda Topics • ALICE paying for machine to act as VO box at Birmingham. Possibly also at other SouthGrid sites. Security. Root access. policy?? Yves will test first … • Unified Naming Scheme? UKI-SOUTHGRID-OXF ?? Oxford to try it!! • Cambridge progress with APEL / Condor? • future upgrades • VO support Can all SouthGrid sites support the same VO’s? With lcg 2_7_0 vo tool available. • On clusters with various memory allocations have to advertise memory available per job slot not per machine!! • Backups: • DPM database on se. • ce • se • mon • lfc • Central Logging Machine also useful as a secondary backup of logs • VRVS demo

  6. LCG 2_7_0 • Birmingham SL304 problems with mktmp so upgrading to sl305 first helps. • Check SL mirror is still OK. • Bham other problems • info provider on ce (extra info from maui only worked for default maui setup, as we have a customized config ) • Recent (March 7th) Bristol Upgrade was much smoother. Many bugs fixed • SouthGrid Now using more modules eg for ganglia • For new nodes use pbsnodes –o fqdn then when happy use pbsnodes –c fqdn • Plan for Oxford Next week and Camb shortly after.

  7. SL 3 – 4- 5 • Summary of Talk given at CERN wrt to SL versions. • SL5 will be to late for LHC so push to certify SL4 by end of March and migrate in Autumn 2006 • There will be no OS upgrade planned for 2007!

  8. Future Upgrades • RAL PPD (£250K) • 52 dual core dual opteron wn’s (late March 06) • 7 * 8TB sata disk servers (2 sys, 1 parity, 1 Hot spare, 20 data) • Network: separate 1Gb/s fibre. separate from rest of PPD. Nortell switches (8) 10Gb capable. so should be able to have a 10Gb link to RAL T1. • CPU over MoU can be used for T3 local PPD VO

  9. Future Upgrades • Oxford • Still waiting for our new computer room…..now Autumn 06 • Short term air con upgrade to allow us to stay as we are! • Bristol • Uni cluster to go on 5th floor of physics. • New room ?? June?? seems un realistic • Need to know how to send LCG jobs to external clusters – We should ask LT2 how they did escience centre.

  10. Future Upgrades • Birmingham • Atlas farm may get integrated more but… • Babar farm increased nodes but h/w reliability problems. Some new disks purchased and may buy some replacement PSU’s • babar ce to be migrated to gridpp ui box. • Lawrie applying for esci clusters….

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