john gordon escience centre uk deployment of lcg1 john gordon cclrc escience centre gridpp7, oxford,...

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