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Quarterly report version v1

Quarterly report version v1. London Tier-2 First Quarter 2006 Olivier van der Aa. Current site status data. UCL-HEP site connectivity is 1Gb. The SE connectivity is currently 100Mb/s Local network connectivity is that to the site SE

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Quarterly report version v1

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  1. Quarterly report version v1 London Tier-2 First Quarter 2006 Olivier van der Aa

  2. Current site status data • UCL-HEP site connectivity is 1Gb. The SE connectivity is currently 100Mb/s • Local network connectivity is that to the site SE • It is understood that SFT failures do not always result from site problems, but it is the best measure currently available. Quarterly report: London Tier 2

  3. All GridPP Resources • The GridPP-Tier-2 MoUs made reference to integrated CPU over the 3 years of GridPP2. Under the “Promised – integrated kSI2K hours until this quarter” an estimate is provided of what the Tier-2 would have expected to provide to this quarter on the basis of planned installations. “Static kSI2K” shows what would currently be expected if all purchases planned to this quarter had been made and implemented. The actual columns show what has been delivered. • Changes wrt last report: • Promised Integrated KSI2K this quarter= MOU KSI2K Sept 2005*90 days • Actual Integrated KSI2K this quarter=(Existing KSI2K)*(n days with no downtime or sft failures) Quarterly report: London Tier 2

  4. LCG resources Estimated for LCG: Not clear how to obtain. Numbers are from previous report 1) The estimated figures are those that were projected for LCG planning purposes: http://lcg-computing-fabric.web.cern.ch/LCG-Computing-Fabric/GDB_resource_infos/Summary_Institutes_2004_2005_v11.htm 2) Current total job slots are those reported by EGEE/LCG gstat page. Quarterly report: London Tier 2

  5. VOs supported by site • The set of VO listed on this table are the approved GridPP VO that can be found athttps://wiki.gridpp.ac.uk/wiki/GridPP_approved_VOs Quarterly report: London Tier 2 X = supported

  6. CPU used per VO over quarter (KSI2K hours) • Information currently available from APEL at http://tinyurl.com/rlow4 • UCL-CCC has been superseeded by UKI-LT2-UCL-CENTRAL that uses sgethe apel accounting on that cluster is not yet publishing • For UKI-LT2-IC-LeSC the same applies • Information currently available from APEL http://tinyurl.com/rlow4 • http://goc.grid-support.ac.uk/gridsite/accounting/tree/gridpp_view.php- please note these pages are • still under development! • NB2: couldn’t get these to agree with the normalised CPU hours on the next slide!!! Quarterly report: London Tier 2

  7. Usage by VO for Tier-2 Numbers of Jobs per VO: http://tinyurl.com/rpscg Numbers of KSI2K Hours: http://tinyurl.com/mmohn Quarterly report: London Tier 2

  8. Storage resources in use per VO (GB) Quarterly report: London Tier 2

  9. CPU Usage by VO (KSI2K hours) Nb: This can be extracted from APEL – http://goc.grid-support.ac.uk/gridsite/accounting/custom.php (http://tinyurl.com/njaj5 ) Quarterly report: London Tier 2

  10. Usage by VO (jobs) Nb: This can be extracted from APEL http://tinyurl.com/nt4yj Quarterly report: London Tier 2

  11. Progress over last quarter • On slide 1 UCL-CENTRAL has the lowest sft failures count but this is because they had a high downtime. RHULhas the highest uptime (no sft failure,no downtime) Quarterly report: London Tier 2

  12. Tier-2 risks • Here “risk” is any significant event (which has a reasonable chance of occurring) that could potentially prevent the Tier-2 from meeting its project commitments. For example, not getting expected funding to fund equipment/infrastructure is a reasonable risk whereas loss of all staff is not. Quarterly report: London Tier 2

  13. Tier-2 planning for next quarter • Improve LT2 site efficiency • Monitor more closely the job efficiency in each site • Improve cross support (implement the SLA document) • SC4: Optimize the DPM throughput. Remove all dpm relying on nfs. Continue Transfer tests between T1-LT2 and inter site transfer tests. Quarterly report: London Tier 2

  14. Objectives and deliverables for last quarter More detail on the transfer tests can be found at: http://wiki.gridpp.ac.uk/wiki/Service_Challenge_Transfer_Tests Quarterly report: London Tier 2

  15. Objectives and deliverables for next quarter Quarterly report: London Tier 2

  16. Meetings, papers & effort For Tier-2 coordinator: Quarterly report: London Tier 2

  17. Summary & outlook Conclusion Summary from last quarter • 6/7 Sites Successful migration to 2.7.0 • Integration of sge for UCL-CENTRAL • VO support more uniform (18 Vo supported by 5/7 sites) • 5/7 sites participated in the transfer tests. Essential Targets - Harden the srm (DPM). Improve throughput. - Continue the SC4 transfer tests. Quarterly report: London Tier 2

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