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LCG-France Tier-2s Tier-3s 21/05/2007

LCG-France Tier-2s Tier-3s 21/05/2007. Ghita Rahal Ghita.rahal@cc.in2p3.fr Frédérique Chollet Frederique.Chollet@lapp.in2p3.fr Fabio Hernandez fabio@in2p3.fr. LCG-France sites (1/4). WLCG Tiers-2 : Analysis facility in Lyon and 3 Tiers-2 GRIF-Paris Region LPC-Clermont Subatech-Nantes

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LCG-France Tier-2s Tier-3s 21/05/2007

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  1. LCG-France Tier-2s Tier-3s 21/05/2007 Ghita Rahal Ghita.rahal@cc.in2p3.fr Frédérique Chollet Frederique.Chollet@lapp.in2p3.fr Fabio Hernandez fabio@in2p3.fr

  2. LCG-France sites (1/4) • WLCG Tiers-2 : Analysis facility in Lyon and 3 Tiers-2 • GRIF-Paris Region • LPC-Clermont • Subatech-Nantes • LCG-France resources outside Tier-1 : a set of 3 Tier-2s and 4 Tier-3s • GRIF in Paris Region acting as a federation of 5 sites • W-LCG Tier-2 : ~ 80 % of GRIF resources • 10 HEP French laboratories involved • Open to EGEE VOs • 1 more Tiers-3 candidate (LPSC Grenoble) • Tier-3 strategy : small Tier-2, LHC local analysis facility, open to EGEE

  3. LCG-France sites (2/4) • Tier-2: GRIF • CEA/DAPNIA • LAL • LLR • LPNHE • IPNO Tier-3: IPHC Strasbourg Ile de France Tier-3: IPNL Nantes Tier-2: Subatech Tier-3: LAPP Clermont-Ferrand Tier-2: LPC Annecy Lyon Tier-1: CC-IN2P3 AF: CC-IN2P3 Marseille Tier-3: CPPM

  4. LCG-France sites (3/4) Scientific and Technical project leaders : CC-IN2P3, AF Lyon : F.Malek, F. Hernandez CPPM Marseille : C.Bee,T.Mouthuy GRIF Paris Region: JP. Meyer, M. Jouvin IPHC Strasbourg : D.Bloch,Y.Patois IPNL Lyon : S.Perries, D.Pugnère LAPP Annecy : S.Jézéquel, N.Neyroud LPC Clermont : D. Pallin, J.C Chevaleyre Subatech Nantes : L. Aphecetche, JM. Barbet Technical Teams G.Baulieu,JM. Barbet, C. Barbier, J.Bernier, D.Bouvet, B.Boutherin, L.Caillat, K.Chawoshi, C.Diarra, S. Elles, E. Fede, Y.Giraud, P.Girard, M. Gougerot, C.Gondrand, Z. Georgette, E. Knoops, P. Micout, P. Larrieu, C. Leroy, C. L’Horphelin, L. Martin, E. Medernach, V.Mendoza, P. Mora de Fraitas, T.Ollivier, Y.Perret, G.Philippon, G. Rahal, M. Ricard, R. Rumler, F. Schaer, J. Schaeffer, L. Schwarz, I. Semeniouk, D. Terront, A. Trunov

  5. LCG-France sites (4/4) • Supported LHC experiments • All sites also support other virtual organizations

  6. Tier-2s Contribution (1/3) • Computing resources in 2008 • Analysis Facility and Tier-2s : 45 % of the total CPU resources pledged by LCG-France • LCG-France Tier-2s planning has been revised according to new estimates of computing capacity requirements Source :http://lcg.web.cern.ch/LCG/planning/phase2_resources/P2PRCcaps170407.pdf

  7. Tier-2s Contribution (2/3)

  8. Tier-2s Contribution (3/3) Number of Tier-2 sites : Alice: 17 Atlas: 30 CMS: 30 LHCb: 11

  9. Tier-2s Planned Capacityin 2008

  10. Tier-2s Planned Evolution Roughly equivalent to the planned Tier-1 CPU capacity the same year 30 % of the planned Tier-1 disk capacity the same year

  11. ForeignTier-2s

  12. Tier-3s Planned Evolution • Tier-3, Analysis facilities and EGEE resources (outside MoU)

  13. Tier-2/Tier-3 Activities • LCG-France Tier-2/Tier-3 technical activities officially set up in April 2006 • Collaboration tools in place • Mailing list, wiki pages, regular video-conference meetings • Activities • Very active in the Quattor working group • Used by most of the LCG-France sites • Network-level and SRM-level data transfer tests from and to tier-1 • Including associated foreign sites • CC-IN2P3 support to Tier-2s • Monitoring of collective services (FTS), common infrastructure (Network) http://cctools.in2p3.fr/dcache/monitoring/ftsmonitor.php • CPU benchmarking… • Meetings held with several potential hardware providers • Sharing of technical and commercial information (hardware evaluation results, commercial conditions, etc.) • DPM day (advanced session) with S.Lemaitre

  14. Tier-2/Tier-3 Activities (cont.) • In close contact with some foreign associated tier-2s • Europe • Belgium CMS Tier-2 • Romanian Federation ATLAS Tier-2 • Asia • IHEP China - ATLAS and CMS Tier2 • ICEPP Japan - ATLAS Tier2 • In close contact with • EGEE SA1: Grid Operations (ROC support) • with Experiments : LHC computing tracking • CAF (Computing ATLAS-France), TFEP (Task force “Efficacité de production”) • with Network experts in IN2P3 and Renater NREN

  15. ATLAS : Tier-1  Tier-2 2007 • DDM Functional Test Romania LAL LPHNE SACLAY BEIJING LPC LAPP Tokyo TOKYO

  16. Site availability survey • Site availability measured as CE & sBDII & SE & SRM from SAM testshttps://lcg-sam.cern.ch:8443/sam/sam.py • Data Extraction from SAM (non official) • aiming for 95% availability

  17. Plans for 2007 • Storage space provision is a major concern for all Tiers • Data access patterns required by the experiments • Managed disk enabled storage : SRM v2.2 implementation • File Systems studies (GPFS, Lustre evaluation) and GSI enabled protocols • VOMS groups and roles integration • Site availability : improve stability despite on-going activities at sites • Infrastructure consolidation, hardware procurements, OS evolution, Mware upgrade • Electric and cooling infrastructure is an issue • Running over XMas, holidays period… • More on Grid Security in connection with IN2P3 security managers • Enhance Tier-2s representation to GDB • Improve monitoring • Set-up a new SRM-level, FTS data transfers test period if possible

  18. Conclusions • Additional resources coming from Tier-2s & even Tier-3 initiatives • Not in competition with Tier-1 funding but funding support expected in 2009 • Significant effort in terms of Budget, infrastructure, human, technology… • Collaborative work • Within EGEE SA1 • Resources and base line services • Within LCG-France • Tier-1 – Tier-2s Tier-3s integration • Enhance collaboration between sites experts and experiment representatives • Relation with the corresponding T1 is fundamental • Working together with experiments • Experiment computing models define tasks distribution, data distribution and specific data flows between Tier-1s and Tier-2s

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