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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 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 • Two counter-circulating proton beams • Collision energy 7+7 TeV
LHC Computing Grid Project • The goal is to deploy a worldwide computational grid service • Will cover computing centers spread across Europe, Asia and America.
Grid Project Challenges • Evolving technologies • Changing requirements • US-Europe compatibility in Grid technology • Funding sources
Funding • CERN base budget • Special contributions of people and materials • Industrial collaboration • National funding of computing services at regional centres
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.
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
The Project Overview • application support and coordination • computing systems • Grid technology • Grid deployment
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
Possible software choices • CONDOR: Condor-G job scheduling, matchmaking (classads), dependencies dagman. • File Movement and Storage Management: GDMP, GridFTP, SRM
Technology Projects And Organizations Involved • DataGrid • CrossGrid • DataTAG
Technology Projects And Organizations Involved • GridPP (UK) • INFN Grid • Dutch Grid, • NorduGrid • Hungarian Grid
Technology Projects And Organizations Involved • GriPhyN • PPDG • iVDGL