Speaker
Prof.
Alexander Read
(University of Oslo, Department of Physics)
Description
Computing and storage resources connected by the Nordugrid ARC middleware in the
Nordic countries, Switzerland and Slovenia are a part of the ATLAS computing grid.
This infrastructure is being commissioned with the ongoing ATLAS Monte Carlo
simulation production in preparation for the commencement of data taking in late
2007. The unique non-intrusive architecture of ARC, it's straightforward interplay
with the ATLAS Production System via the Dulcinea executor, and its performance
during the commissioning exercise will be described. ARC support for flexible and
powerful
end-user analysis within the GANGA distributed analysis framework will
be shown. Whereas the storage solution for this grid was earlier based on a large,
distributed collection of gridftp-servers, the ATLAS computing design includes a
structured SRM-based system with a limited number of storage endpoints. The
characteristics, integration and
performance of the old and new storage solutions are described. Although the hardware
resources in this grid are quite modest, it has provided more than double the agreed
contribution to the ATLAS production with an efficiency above 95% during long periods
of stable operation. If time allows, the full chain will be demonstrated.
| Submitted on behalf of Collaboration (ex, BaBar, ATLAS) | Particle Physics group, University of Oslo |
|---|
Primary authors
Dr
Adrian Taga
(University of Oslo, Department of Physics)
Prof.
Alexander Read
(University of Oslo, Department of Physics)
Dr
Bjørn Hallvard Samset
(University of Oslo, Department of Physics)
Dr
David Cameron
(University of Oslo, Department of Physics)
Prof.
Farid Ould-Saada
(University of Oslo, Department of Physics)
Ms
Katarina Pajchel
(University of Oslo, Department of Physics)
Co-authors
Dr
Andrej Filipcic
(Jozef Stefan Institute, Dept. for Experimental Particle Physics)
Dr
Mattias Ellert
(University of Uppsala, Department of nuclear and particle physics)
Dr
Sigve Haug
(University of Bern)
