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

, FZK 2 Outline Supported groups Supported groups Hardware Hardware Middleware and software Middleware and software Current status Current status

, FZK 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, 20 engineers, 20 technicians and 40 students and PhD students

, FZK 4 Hardware 2 independent computing farms –Golias located in FZU –Skurut from CESNET –Skurut from CESNET (= “academic network provider”) older hardware (29 dual nodes, PIII700MHz) offered by CESNET 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) 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 contribution to Atlas DC2 at a level of 2% of all jobs finished on LCG

, FZK 5 Available Resources - FZU Computer hall 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

, FZK 6 FZU Worker Nodes 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 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 Network components –3x HP ProCurve Networking Switch 2848 (3x48 ports) –HP 4108GL ~ 30 KSI2K will be added this year

, FZK 7 Golias Farm Hardware - servers PBS server: HP DL360 – 2x Intel Xeon 2.8, 2 GB RAM 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) CE, SE, UI: HP LP1000, 2x1.13Ghz PIII, 1 GB RAM, 100 Mbps (SE should be upgraded to 1 Gbps soon) NFS servers 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 dCache server –HP DL140 upgraded by raid controller, 2x300GB discs –not used for productions, reserved for SC3 Some other servers (www, SAM) Some other servers (www, SAM)

, FZK 8 Middleware, Batch System GOLIAS: –LCG2 (2_6_0): CE, SE, UI – SLC3 CE, SE, UI – SLC3 WNs - RH7.3 (local D0 group not yet ready for SLC3) WNs - RH7.3 (local D0 group not yet ready for SLC3) –PBSPro server not on CE CE submits jobs to the node golias (PBSPro server) CE submits jobs to the node golias (PBSPro server) local users can submit to local queues on golias local users can submit to local queues on goliasSKURUT: –LCG2 (2_6_0), OpenPBS server on CE –all nodes - SLC3

, FZK 9 Queues Separate queues for different experiments and privileged users: 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: priorities are set by some PBS parameters: –max_running, max_user_running, priority, node properties still not optimal in heterogeneous environment still not optimal in heterogeneous environment

, FZK 10 Jobs statistics 2005/1-6 Used CPU time (in days) per activity, for January – June 2005

, FZK 11 Simulations for ATLAS

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

, FZK 13 Tier1 – Tier2 relations Requirements defined by experiments ATLAS and ALICE Requirements defined by experiments ATLAS and ALICE Direct network connection between FZU and GridKa will be provided by GEANT2 next year Direct network connection between FZU and GridKa will be provided by GEANT2 next year “Know-how” exchange welcomed “Know-how” exchange welcomed

, FZK 14 THE END