Tier2 Centre in Prague

Transcription

1 Tier2 Centre in Prague Jiří Chudoba FZU AV ČR - Institute of Physics of the t Academy of Sciences of the Czech Republic

2 Outline Supported groups Hardware Middleware and software Current status 2

3 Particle Physics in the Czech Republic Groups located at Charles University in Prague Czech Technical University in Prague Institute of Physics of the Academy of Sciences of the Czech Republic Nuclear Physics Institute of the Academy of Sciences of the Czech Republic Main Applications Projects ATLAS, ALICE, D0, STAR, TOTEM Groups of theoreticians Approximate size of the community 60 scientists,, 202 engineers,, 202 technicians and 40 students and PhD students 3

4 Hardware 2 independent computing farms Golias located in FZU Skurut from CESNET (= academic network provider ) older hardware (29 dual nodes, PIII700MHz) offered by CESNET part used as a production farm, some nodes for tests and support for different VOs (VOCE, GILDA, CE testbed) contribution to Atlas DC2 at a level of 2% of all jobs finished on LCG 4

5 Available Resources - FZU Computer hall 2 x 9 racks 2 air condition units 180 kw electrical power available from UPS, backed up by Diesel generator 1 Gbps optical connection to CESNET metropolitan network direct 1 Gbps optical connection to CzechLight shared with other FZU activities 5

6 FZU Worker Nodes (September 2005) 67x HP DL140, dual Intel Xeon 3.06 GHz with HT (enabled only on some nodes), 2 or 4 GB RAM, 80 GB HDD 1x x dual AMD Opteron 1.6 GHz, 2 GB RAM, 40 GB HDD 24x HP LP1000r, 2xPIII1.13 GHz, 1 GB RAM, 18 GB SCSI HDD WN connected via 1 Gbps (DL140) or 100 Mbps (LP1000r) Network components 3x HP ProCurve Networking Switch 2848 (3x48 ports) HP 4108GL 6

7 Golias Farm Hardware - servers PBS server: HP DL360 2x Intel Xeon 2.8,, 2 GB RAM CE, SE, UI: HP LP1000, 2x1.13Ghz PIII, 1 GB RAM, 100 Mbps (SE should be upgraded to 1 Gbps soon) NFS servers 1x HP DL145 2x AMD Opteron 1.6 GHz,, connected disc array 30 TB (raw capacity), ATA discs 1x HP LP4100TC, 1 TB disc array, SCSI discs 1x embedded server in EasySTOR 1400RP (PIII), 10 TB, ATA discs dcache server HP DL140 upgraded by raid controller, 2x300GB discs not used for production, reserved for SC3 Some other servers (www, SAM) 7

8 Middleware, Batch System GOLIAS: LCG2 (2_6_0): CE, SE, UI SLC3 WNs - RH7.3 (D0 not yet ready for SLC3) PBSPro server not on CE SKURUT: CE submits jobs to the node golias (PBSPro server) local users can submit to local queues on golias LCG2 (2_6_0), default Torque/Maui server/scheduler on CE all nodes - SLC3 8

9 Queues Separate queues for different experiments and privileged users: atlas, atlasprod, lcgatlas, lcgatlasprod alice, aliceprod, d0, d0prod, auger, star,... short, long priorities are set by some PBS parameters: max_running, max_user_running, priority, node properties still not optimal in heterogeneous environment 9

10 Jobs statistics 2005/ d0 atlas starprod auger alice long short other Used CPU time (in days) per activity, for January June 2005, Golias farm 10

11 Simulations for ATLAS All PILEUP jobs on LCG TRIUMF; 153; 2% IFAE; 871; 9% ROMA; 1718; 18% TAIWAN; 3207; 33% PRAGUE; 3843; 38% 11

12 ALICE PDC Phase2 (2004) 2004: ALICE jobs submitted to Golias via AliEn 2005: new version of AliEn is being installed 12

13 EGEE in CZ EGEE Enabling Grids for E-science in Europe integrate current national, regional and thematic Grid efforts to create a seamless European Grid infrastructure for the support of the European Research Area CZ participation involvement in EGEE CESNET SA1 - European Grid Support, Operation and Management Operation of LCG-2 certified farms FZU and CESNET Local support NA3 - User Training and Induction NA4 - Application Identification and Support computational chemistry, technical and material simulations JRA1 - Middleware Re-engineering and Integration effort mostly through METACentre project, biggest participation from Masaryk University in Brno 13

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