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D0 computing @ NIKHEF

D0 computing @ NIKHEF. Amsterdam. D0 farm (SAM station hoeve, node schuur) 2 servers, 50 dual cpu nodes Used for MC production Triviaal (SAM station triviaal) 1 server, 2 dual cpu nodes Used for tests (D0RACE workshop). mcp10. p10.15. Nijmegen. doesburg (SAM station nijmegen)

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D0 computing @ NIKHEF

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  1. D0 computing @ NIKHEF

  2. Amsterdam • D0 farm (SAM station hoeve, node schuur) • 2 servers, 50 dual cpu nodes • Used for MC production • Triviaal (SAM station triviaal) • 1 server, 2 dual cpu nodes • Used for tests (D0RACE workshop) D0/NL @ Nijmegen

  3. mcp10 p10.15 D0/NL @ Nijmegen

  4. Nijmegen • doesburg (SAM station nijmegen) • 1 server, 3 dual cpu nodes ? • (to be) used for analysis D0/NL @ Nijmegen

  5. hoeve Central analysis triviaal nijmegen SAM fnal robot sara robot D0/NL @ Nijmegen

  6. D0/NL @ Nijmegen

  7. SAM • hoeve • v3_1_17 • triviaal • v4_0_0_3 • nijmegen • v3_2_18 ? D0/NL @ Nijmegen

  8. hoeve RH 7.2 ups/upd sam fbs nodes RH 7.2 schuur RH 7.2 upgrades D0/NL @ Nijmegen

  9. Integration with grid • At present separate clusters: • D0, LHCb, Alice, DAS cluster • hoeve and schuur in farm network • Replace fbs with pbs or condor • Use EDG installation tool LCGF • Install d0 software with rpm • Problem with sam (uses ups/upd) D0/NL @ Nijmegen

  10. Present network layout hefnet schuur hoeve router switch surfnet node node node D0/NL @ Nijmegen

  11. New network layout hefnet lambda farmrouter switch switch switch hoeve schuur D0 LHCb alice D0/NL @ Nijmegen

  12. Use of hoeve • MC production • Analysis of root tuples • Cache tuples on schuur • Analyze tuples on desktop or farm node • Recompilation of algorithms • Software development D0/NL @ Nijmegen

  13. Conclusions • Exchange experience • SAM • D0 software • We need use cases D0/NL @ Nijmegen

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