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The LHC Computing Grid Project

The LHC Computing Grid Project. Tomi Kauppi Timo Larjo. LHC. Large Hadron Collider World’s most powerful particle accelerator Constructed at CERN. LHC Properties. 24 Km of magnets with a field of 8.4 Tesla Super-fluid helium cooled to 1.9 degrees of Kelvin

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The LHC Computing Grid Project

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  1. The LHC Computing Grid Project Tomi Kauppi Timo Larjo

  2. LHC • Large Hadron Collider • World’s most powerful particle accelerator • Constructed at CERN

  3. LHC Properties • 24 Km of magnets with a field of 8.4 Tesla • Super-fluid helium cooled to 1.9 degrees of Kelvin • Two counter-circulating proton beams • Collision energy 7+7 TeV

  4. LHC Computing Grid Project • The goal is to deploy a worldwide computational grid service • Will cover computing centers spread across Europe, Asia and America.

  5. Grid Project Challenges • Evolving technologies • Changing requirements • US-Europe compatibility in Grid technology • Funding sources

  6. Funding • CERN base budget • Special contributions of people and materials • Industrial collaboration • National funding of computing services at regional centres

  7. Why Use Grid for This Project • LHC will produce huge amount of data • The user community and computing facilities are globally distributed • different access and usage policies.

  8. Why Use Grid for This Project

  9. Why Use Grid for This Project • Wide area distributed data management • Efficient resource scheduling • Security • Performance and status monitoring • Reliability and sustained throughput • Efficient use of high throughput wide area networks

  10. The Project Overview • application support and coordination • computing systems • Grid technology • Grid deployment

  11. How is the Grid planned to work

  12. Possible software choices • GLOBUS: X509 certificates, GSI Authentication, GridFTP, MDS LDAP based monitoring and resource discovery framework, GRAM job submission; Replica services. • Authorization extensions: LDAP VO service

  13. Possible software choices • CONDOR: Condor-G job scheduling, matchmaking (classads), dependencies dagman. • File Movement and Storage Management: GDMP, GridFTP, SRM

  14. Technology Projects And Organizations Involved • DataGrid • CrossGrid • DataTAG

  15. Technology Projects And Organizations Involved • GridPP (UK) • INFN Grid • Dutch Grid, • NorduGrid • Hungarian Grid

  16. Technology Projects And Organizations Involved • GriPhyN • PPDG • iVDGL

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