Partner Logo Tier1/A and Tier2 in GridPP2 John Gordon GridPP6 31 January 2003.

PartnerLogo

Tier1/A and Tier2 in GridPP2

John Gordon

GridPP6

31 January 2003

John Gordon –GridPP6- n° 2

Summary

Tier1s now and soon Hardware

Staffing

Tier2s

A unified GridPP Grid


Tier1A Current status

2002 resources – 500 cpus, 46TB disk, 50-100TB of tape, increase in /home/csf and AFS plus supporting networking

Hardware Plan for 2003 (now) Tenders out now for disk, cpu,

Datastore upgrade (STK 9940B) Gbit ethernet, extra staging space

Hardware Plan for 2003 (later) Further tenders in 2003 to spend the remainder of GridPP

hardware budget


…and beyond 2003

Tier1/A number of cpus

0

500

1000

1500

2000

2500

2002 2003 2004 2005 2006 2007

Series1

Total SI2K at Tier1/A

0

1000000

2000000

3000000

4000000

5000000

6000000

2002 2003 2004 2005 2006 2007

SI2K

Legacy

Tier1A Disk (GB)

0

200000

400000

600000

800000

1000000

1200000

2002 2003 2004 2005 2006 2007

Disk(GB)


users/grids

BaBar/LHC Split (SI2K)

0200000400000600000800000

10000001200000140000016000001800000

2002 2003 2004 2005 2006 2007

BaBar

LHC

Legacy


BaBar/LHC split (GB)

0

100000

200000

300000

400000

500000

600000

700000

2002 2003 2004 2005 2006 2007

BaBar

LHC


How do we share resources?

Disk 2002

Legacy TB

BaBar TB

LHC TB

Disk 2003Legacy

BaBar

D0

CDF

Atlas

CMS

Alice

LHCb

QCD

Other

New

EDG

LCG

Disk 2003Legacy

BaBar

D0

CDF

Atlas

CMS

Alice

LHCb

QCD

Other

New

EDG

LCG


Staffing Levels

Today around 14 people Not all in post

GridPP2 plan = 16 Not a big increase for the proposed extra work

See Andrew’s talk on extra layers of software

Ignores 24x7 support

Tier1/A outreach and support requires more

Middleware Support Needed in UK, even if we no longer develop any ourselves

Most efficient at Tier1/A but not strictly necessary

Support staff should be involved with development


Tier1 Service Development

LCG is the biggest unknown RAL an early adopter in run-up to LCG1 in July

…but what middleware will it run

Still much discussion on resources, policies, and operations

Data Challenges in 2003 Serious amounts of data to be stored and tranferred

Stress tests of all parts of the service

How will they run? - current service, EDG, LCG?

Spreading the (always limited) resources Between all experiments and grids


Tier2 Plans

In 2002 GridPP called for expressions of interest from Tier2s

Offering 0.5sy each if effort matched For the last year of GridPP

Four collaborations emerged (ScotGrid, London, North, South) We will hear from them today

Resources not funded by GridPP2 (as GridPP1)

Staff in GridPP2 plan (eg 4 centres @ 4 FTE)


Tier2 Issues

MoU on use of Tier2 resources? eg LCG wants projection of resources available to each LHC

expt

How to implement any such policies (local/vs external; between expts)

What is a distributed Tier2? How does one implement a single external view/interface?


EDG

LCG

Other

DataChallenges


Towards a Production GridPP2 Grid

UK-wide infrastructure Centres - Tier1, Tier2s, others?,

Services - Information Service, Resource Broker, VO, VOMS, RLS, CA

Support - TB-support, Helpdesk, Grid Support Centre, applications

Operations – monitoring, systems support, resource scheduling, accounting

Applications To deliver the service they want, we need all of the above at

production quality

We also need middleware – but from where?

Partner Logo Tier1/A and Tier2 in GridPP2 John Gordon GridPP6 31 January 2003.

Documents

Transcript of Partner Logo Tier1/A and Tier2 in GridPP2 John Gordon GridPP6 31 January 2003.