John Gordon
eScience Centre
UK Deployment of LCG1
John Gordon
CCLRC Escience Centre
GridPP7, Oxford, July 2003
John Gordon
eScience centre
Disclaimer
• My personal views– Not widely discussed in GridPP– No formal Policy
• but this is my area of responsibility in PMB
John Gordon
eScience centre
UK
• As Ian Bird said in previous talk, LCG1 will be deployed at 10 Tier1s– plus token Tier2
• Tier2s will be added through support by Tier1s– Second level support from Team LCG
• So Tier1s won’t want to increase their support load until they are happy that their own deployment is reasonably stable.– Double number of sites by end of 2003?– Implies 1 Tier2 per Tier1– UK will offer more
John Gordon
eScience centre
UK Tier1
• Already in LCG0• Ready for LCG1• Developing Operations Centre• LCG Security Coordinator
• Resources there for LHC will be deployed for LCG if experiments wish– Existing resources already fully committed until end of
2003 for• CMS DC04 simulation• Atlas DC03(?)
– Hardware upgrade by end of year.
John Gordon
eScience centre
UK Testbeds
• Several existing UK testbeds– EDG
• Application and development
– BaBarGrid
– SAMGrid
– QCDGrid
• IC Resource Broker• GridPP VO Server• TB-Support
– Team, meetings, mailing lists
John Gordon
eScience centre
EDG Applications Testbed
• Almost all coloured sites have belonged to EDG Application Testbed at some time.
• Almost all waiting to migrate to EDG TB2.0
• Should happen over summer before LCG1 will be ready for them
John Gordon
eScience centre
Projected Hardware Resources
Total Resources:
2004 2007(note x2 scale change)
John Gordon
eScience centre
NorthGrid
SouthGrid LondonGrid
ScotGrid
John Gordon
eScience centre
UK Tier2 Centres
• Four Virtual Tier2 Centres
• What is a virtual Tier2?– Management domain– Shared commitments– Sign up jointly to SLAs– Common Support– Seamless when technology allows– A federated Grid
• All will join LCG1 some time
John Gordon
eScience centre
Joining LCG1
• So, how will we join LCG1?• Determined by
– LCG Team – do they want us all at once?
– Tier1 support (TB Support?) What support will there be?
– Tier2s – do they want to order sites? Or have a guineapig?
– Sites – they have the hardware resources, do they have the effort?
• All sites should consider if they wish to join in 2003 or remain in EDG apptb, or both.
John Gordon
eScience centre
Unknowns
• Site Certification– How do we prove that a site is ready to
connect?
• Can an LCG1 resource be shared with non-LCG use?– In theory yes, but in practise?
John Gordon
eScience centre
Preparations
• Security and registration– Procedures defined
• Site information gathering– Contacts etc, prior to joining
• Join TB2.0 to gain familiarity with middleware
• Migrate to LCFGng
