-
C A J Brew,
F F Wilson,
G Castelli,
T Adye,
W Roethel,
E Luppi,
D Andreotti,
D Smith,
A Khan,
M Barrett,
R Barlow,
D Bailey
[show abstract]
[hide abstract]
ABSTRACT: The BABAR Collaboration, based at Stanford Linear Accelerator Center (SLAC), Stanford, US, has been performing physics reconstruction, simulation studies and data analysis for 8 years using a number of compute farms around the world. Recent developments in Grid technologies could provide a way to manage the distributed resources in a single coherent structure. We describe enhancements to the BABAR experiment's distributed skimmed dataset production system to make use of European Grid resources and present the results with regard to BABAR's latest cycle of skimmed dataset production. We compare the benefits of a local and Grid-based systems, the ease with which the system is managed and the challenges of integrating the Grid with legacy software. We compare job success rates and manageability issues between Grid and non-Grid production.
Journal of Physics Conference Series 07/2008; 119(6):062018.
-
Second International Conference on e-Science and Grid Technologies (e-Science 2006), 4-6 December 2006, Amsterdam, The Netherlands; 01/2006
-
A Khan,
T Adye, C A J Brew,
F Wilson,
B. Bense,
R.D. Cowles,
D.A. Smith,
D. Andreotti,
C Bozzi,
E Luppi,
P. Veronesi,
R Barlow,
M P Kelly,
J.C. Werner,
A. Forti,
G Grosdidier,
E Feltresi,
A Petzold,
H. Lacker,
J E Sundermann
[show abstract]
[hide abstract]
ABSTRACT: This paper discusses the use of e-science grid in providing computational resources for modern international high energy physics (HEP) experiments. We investigate the suitability of the current generation of grid software to provide the necessary resources to perform large-scale simulation of the experiment and analysis of data in the context of multinational collaboration.
Grid Computing, 2005. The 6th IEEE/ACM International Workshop on; 12/2005
-
C. Bozzi,
T. Adye,
D. Andreotti,
E. Antonioli,
R. Barlow,
B. Bense,
D. Boutigny, C.A.J. Brew,
D. Colling,
R.D. Cowles, [......],
G. Grosdidier,
A. Hasan,
H. Lacker,
E. Luppi,
J. Martyniak,
A. McNab,
A. Petzold,
D.A. Smith,
J.E. Sundermann,
P. Veronesi
[show abstract]
[hide abstract]
ABSTRACT: The BaBar experiment has been taking data since 1999. In 2001 the computing group started to evaluate the possibility to evolve toward a distributed computing model in a grid environment. We built a prototype system, based on the European Data Grid (EDG), to submit full-scale analysis and Monte Carlo simulation jobs. Computing elements, storage elements, and worker nodes have been installed at SLAC and at various European sites. A BaBar virtual organization (VO) and a test replica catalog (RC) are maintained in Manchester, U.K., and the experiment is using three EDG testbed resource brokers in the U.K. and in Italy. First analysis tests were performed under the assumption that a standard BaBar software release was available at the grid target sites, using RC to register information about the executable and the produced n-tuples. Hundreds of analysis jobs accessing either Objectivity or Root data files ran on the grid. We tested the Monte Carlo production using a farm of the INFN-grid testbed customized to install an Objectivity database and run BaBar simulation software. First simulation production tests were performed using standard Job Description Language commands and the output files were written on the closest storage element. A package that can be officially distributed to grid sites not specifically customized for BaBar has been prepared. We are studying the possibility to add a user friendly interface to access grid services for BaBar.
IEEE Transactions on Nuclear Science 11/2004; · 1.45 Impact Factor
