CMS Belgian T2. G. Bruno UCL, Louvain, Belgium on behalf of the CMS Belgian T2 community. GridKa T1/2 meeting, Karlsruhe Germany February

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1 UCL, Louvain, Belgium on behalf of the community GridKa, Karlsruhe Germany February

2 community Institutes in CMS (40 physicists) UA (Antwerp) UCL (Louvain-La-Neuve) ULB (Brussels) UMH (Mons) VUB (Brussels) Belgium is not involved in LHC experiments other than CMS Other experimental communities interested in Grid resources: Amanda, IceCube 2

3 Current Responsibilities Hardware Contribution to the construction of the Silicon Strip Tracker EndCap Software Vertex reconstruction group coordination Tracker Data Handling group coordination Calibrations, Monitoring, databases and local reconstruction Tk Magnet Test offline software coordination 3

4 Physics Interests Higgs sector Higgs -> WW -> l+l- (l) Supersymmetric Higgs searches with b-jets and leptons in final state Extra-Dimensions high energy electron positron final states Top-physics Physics with forward protons 4

5 T2 planning Presented Budget request to build a nominal CMS Tier2 Very positively received by the funding agencies Federated structure with 2 sites: UCL IIHE (ULB-VUB) Planned deployment of resources (indicative): CPU (MSi2k) DISK (PB) WAN (Gb/s)

6 Organization and support (steady state operation) T2 Manager (~0.3 FTE) Contact with CMS management and collaborating centers Internal meetings, Funding requests T2 Technical coordinator (~1.2 FTE) LCG and CMS software management User s support Center Monitoring Local technical support (~1 FTE) Hardware and services support Software support up to Operating System level TIER 2 Manager TIER 2 Technical Coordinator Local Site Support (UCL) Host Institute Management Local Site Support (IIHE) Host Institute Management 6

7 Current research Grid projects BEgrid BelGrid Federal Used by 7 institutes 330 CPU, 5TB Walloon Used by 5 institutes 70 CPU, 2TB For Grid research and promotion of Grid computing in scientific research 7

8 Grid in Belgium: current status Local non-shared resources Hardware 100+ CPU 20+ TB CMS software installed OSCAR (detector simulation), ORCA (reconstruction), FAMOS (fast simulation) CRAB (end-user analysis on Grid) PubDB (data publication) Phedex (data transfer) 8

9 Grid in Belgium: current status (2) Grid resources (mainly BEgrid project) Shared by a separate VO (becms) Being used by Belgian CMS people Analysis (crab+orca) Fast Simulation (crab+famos) Full Simulation (homebrew scripts+oscar+orca) 9

10 Example of CRAB/FAMOS (vo becms submission ) 10

11 Site level: IIHE (Brussels) Hardware/Software: 1 CE/SE (seclassic), 1 RB/MyProxy, 1 CMS-box (Phedex), 1 Quattor server, 110 WN CPU 7 machines in testbed (glite) Dcache-test: 8*300GB, 7 machines 100Mb/s to outside, 1 Gb/s internal, currently Manpower: 2FTE for Grid/CMS FTE other Activities: Initial phedex tests (with Lyon T1) glite+quattor//glite Logging+bookkeeping Monitoring (Lemon) Site is being used for CMS production 11

12 Site level: UCL Hardware 8 dual-processor computers (Sun Fire V20z) 1 file server (1.5 TB) 100 Mb/s internet link Software Scientific Linux CERN Release (SLC3) LHC Computing Grid (LCG2) 1 Computing Element (CE) 1 Storage Element (SE, DPM) 7 Working Nodes (WN) TORQUE batch system Manpower 1.4 FTE LCG/CMS software FTE local technical support starting from April 1,

13 Planned short term tests (mostly ongoing) Storage Further deployment of storage solutions: dcache (maybe others, eg dpm, xrootd) Current tests with dcache (8*300GB/7 machines) IO-tests: need to read at 2MB/s/batch-slot (testing with ExDigiStatistics and NoPU/PU data) Other items Network tests (BW and stability to/from T1, eg CC-IN2P3) CMS: PHEDEX, analysis on locally-hosted official data (+ similar tests for local data) Centralised administration (on Begrid level) Deployment and integration with monitoring (LEMON) Managed by Quattor 13

14 Participation in SC04 Test transparency of data transfer to/from both sites Baseline: no hosting of MTCC data Though IIHE is considering this possibility Coupling of T3 to T2 UCL:T3 will be hosted at the same physical location of T2 IIHE: most likely at least part of T3 will be in a separate place Decoupling throgh accounting or separate VO Coupling to T1 Interest in northern T1 centers (France, Germany, UK) Desirable to have (infrequent) Raw+Reco data access Good bandwidth Difficult to say about MC data 14

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