Speakers
Dr
Graeme Andrew Stewart
(University of Glasgow)Dr
Michael John Kenyon
(University of Glasgow)Dr
Samuel Skipsey
(University of Glasgow)
Description
ScotGrid is a distributed Tier-2 centre in the UK with sites in
Durham, Edinburgh and Glasgow. ScotGrid has undergone a huge expansion
in hardware in anticipation of the LHC and now provides more than
4MSI2K and 500TB to the LHC VOs.
Scaling up to this level of provision has brought many challenges to
the Tier-2 and we show in this paper how we have adopted new methods
of organising the centres, from fabric management and monitoring to
remote management of sites to management and operational procedures,
to meet these challenges.
We describe how we have coped with different operational models at the
sites, where Glagsow and Durham sites are managed "in house" but
resources at Edinburgh are managed as a central university
resource. This required the adoption of a different fabric management
model at Edinburgh and a special engagement with the cluster
managers. Challenges arose from the different job models of local and
grid submission that required special attention to resolve.
We show how ScotGrid has successfully provided an infrastructure for
ATLAS and LHCb monte carlo production.
Special attention has been paid to ensuring that user analysis
functions efficiently, which has required optimisation of local storage
and networking to cope with the demands of user analysis.
Finally, although these Tier-2 resources are pledged to the whole VO,
we have established close links with our local physics user
communities as being the best way to ensure that the Tier-2 functions
effectively as a part of the LHC grid computing framework.
| Presentation type (oral | poster) | oral prefered |
|---|
Authors
Dr
Graeme Andrew Stewart
(University of Glasgow)
Dr
Michael John Kenyon
(University of Glasgow)
Dr
Samuel Skipsey
(University of Glasgow)
Co-authors
Mr
David Ambrose-Griffith
(University of Durham)
Dr
Greig Alan Cowan
(University of Edinburgh)
Mr
Philip Roffe
(University of Durham)
