Grid Computing at Ljubljana and Nova Gorica
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1 Grid Computing at Ljubljana and Nova Gorica Marko Bračko 1, Samo Stanič 2 1 J. Stefan Institute, Ljubljana & University of Maribor 2 University of Nova Gorica The outline of the talk: Introduction Resources Experience Plans and expectations Belle II General Meeting, KEK, 7th - 9th July 29
2 Introduction GRID activities at the J. Stefan Institute (JSI) were initiated by the ATLAS group of the Experimental Particle Physics Department Some of those colleagues are also members of the Laboratory of Astroparticle Physics (LAP) at the University of Nova Gorica (UNG) (natural collaboration) JSI as members of the ATLAS experiment joined the two projects: LCG (LHC Grid) and EGEE (Enabling Grids for E-science) projects (23) SiGNET cluster (Slovenian Grid NETwork) was set-up as a pilot GRID project in Slovenia (started in autumn 23, was available for EGEE on 1st April 24) SiGNET cluster was financed by Rep. of Slovenia and EU: one of the first operating clusters with the 64-bit architecture SiGNET VO and SiGNET CA (an accredited Certification Authority) established B2GM, KEK, July 29 2
3 Computing resources SiGNET framework : Servers: ~1 AMD Opterons with 16 GB memory, 1 Gb/s links Data servers/disk space: AMD Opterons with 4 GB memory, ~3 TB disk space Computing cluster: Computing nodes: 2-proc. 4-core AMD Opteron 23XX with 2 GB memory 1 Gb/s link Desktop PC's: ~24 GB disk space, 1 Gb/s link B2GM, KEK, July 29 3
4 Computing resources SiGNET framework : Servers: ~1 AMD Opterons with 16 GB memory, 1 Gb/s links Data servers/disk space: AMD Opterons with 4 GB memory, ~3 TB disk space Altogether: ~6 processors in the system Computing cluster: Computing nodes: 2-proc. 4-core AMD Opteron 23XX with 2 GB memory 1 Gb/s link Desktop PC's: ~24 GB disk space, 1 Gb/s link B2GM, KEK, July 29 4
5 Computing resources SiGNET architecture : Operation system: Mainly Gentoo Linux Partly GNU/linux SLC (Scientific Linux CERN) File system: OpenAFS on servers Job management: MAUI Cluster Scheduler TORQUE resource manager GRID middleware: NorduGrid ARC (Advanced Resource Connector) glite 3.1. B2GM, KEK, July 29 5
6 Internet connection Service provided by ARNES (Academic and research network of Slovenia), linked to... ARNES backbone B2GM, KEK, July 29 6
7 Internet connection GÉANT2 (Pan-European research and education network) and via it to SINET3 (Science Information Network of Japan) over the U.S.A. GÉANT2 backbone SINET3 B2GM, KEK, July 29 7
8 Internet connection IJS, UNG 1 GB/s 2 GB/s GÉANT GB/s SINET3 2 GB/s KEK pikolit [4] traceroute belle.kek.jp traceroute to belle.kek.jp ( ), 3 hops max, 6 byte packets 1 f9gw.ijs.si ( ).737 ms.784 ms.87 ms ( ).115 ms.147 ms.143 ms ( ).485 ms.633 ms.632 ms 4 rarnes1-x--x11.arnes.si ( ) ms ms ms 5 arnes.rt1.vie.at.geant2.net ( ) 7.5 ms 7.69 ms ms 6 so-7--.rt1.pra.cz.geant2.net ( ) ms ms ms 7 so-6-3-.rt1.fra.de.geant2.net ( ) ms ms ms 8 so-5--.rt1.ams.nl.geant2.net ( ) ms ms ms 9 nyc-gate1-rm-ge sinet.ad.jp ( ) ms ms ms 1 tokyo1-dc-rm-p sinet.ad.jp ( ) ms ms 34.5 ms 11 tsukuba-dc-rm-ae--11.sinet.ad.jp ( ) ms ms ms 12 kek-lan-1.gw.sinet.ad.jp ( ) ms ms ms ( ) ms ms ms 14 belle1.kek.jp ( ) ms ms ms Transfer rate: e.g. tested a few years ago with ssh from ijs.si up to ~ 2kB/s ; up to ~ 1 ssh connections at once B2GM, KEK, July 29 8
9 GRID experience SiGNET : a member of NorduGrid and EGEE B2GM, KEK, July 29 9
10 GRID experience B2GM, KEK, July 29 1
11 GRID experience B2GM, KEK, July 29 11
12 GRID experience Very stable operation during the Atlas Data Challenge 2 experiment B2GM, KEK, July 29 12
13 GRID experience Belle grid on SiGNET: Joined Belle VO (28/8); set up Belle environment (29/2) lcgce.ijs.si [6] lcg-infosites --vo belle ce #CPU Free Total Jobs Running Waiting ComputingElement grid-lcgce.rzg.mpg.de:2119/jobmanager-lcgsge-long ce-1-fzk.gridka.de:2119/jobmanager-pbspro-bellel ce-1-fzk.gridka.de:2119/jobmanager-pbspro-bellexl truncated kek2-ce2.cc.kek.jp:2119/jobmanager-lcgpbs-belle cream-2-fzk.gridka.de:8443/cream-pbs-bellexxl dg1.cc.kek.jp:2119/jobmanager-lcgpbs-belle kek2-ce1.cc.kek.jp:2119/jobmanager-lcgpbs-belle ce-2-fzk.gridka.de:2119/jobmanager-pbspro-bellexs ce-4-fzk.gridka.de:2119/jobmanager-pbspro-bellexl lcgce.ijs.si:2119/jobmanager-pbs-belle ce-alice.sdfarm.kr:2119/jobmanager-lcgpbs-belle ce-4-fzk.gridka.de:2119/jobmanager-pbspro-bellel ce.cc.ncu.edu.tw:2119/jobmanager-lcgpbs-belle cream-1-fzk.gridka.de:8443/cream-pbs-bellexxl ce-2-fzk.gridka.de:2119/jobmanager-pbspro-bellel cream-1-fzk.gridka.de:8443/cream-pbs-belles ce-4-fzk.gridka.de:2119/jobmanager-pbspro-bellexxl B2GM, KEK, July 29 13
14 GRID experience Belle grid on SiGNET: Joined Belle VO (28/8); set up Belle environment (29/2) G. Iwai B2GM, KEK, July 29 14
15 GRID experience Belle grid on SiGNET: Joined Belle VO (28/8); set up Belle environment (29/2) Belle MC started (29/3) We are still establishing the stable setup H. Nakazawa B2GM, KEK, July 29 15
16 Plans and expectations Jozef Stefan Institute Funding for Grid approved by the Slovenian Research Agency (June 29) Part of the equipment (totalling at ~5 keur) will be purchased and installed (within 29) System upgraded/extended : Probably some storage units Computing clusters? Coexistence of ATLAS/Belle/P. Auger Grid... For Belle part it is important to solve the infrastructure/software problems and contribute proportionally to the Belle MC B2GM, KEK, July 29 16
17 Plans and expectations University of Nova Gorica Funding for Grid approved by the Slovenian Research Agency (June 29) Part of the equipment (totalling at ~7 keur) will be purchased and installed (within 29) System configuration will be modular and based on Fibre Channel technology: Main server (25 Tb) Computing cluster: (initially 3 high end servers with dual quad-core CPU s = 24 cores) Tape library for data archiving Installation and integration into Belle and P. Auger Grid will be done jointly with the JSI UNG has a 1 Gb/s link with ARNES and JSI, so networking connectivity of the nodes at UNG will be good B2GM, KEK, July 29 17
18 and should play an active role and contribute significantly to the Belle/Belle-II Grid.
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