Activities and performance optimization of the Italian computing centers supporting the ATLAS experiment

Author

Vilucchi, Elisabetta ; Andreazza, Attilio ; Anzellotti, Daniela ; Barberis, Dario ; Brunengo, Alessandro ; Campana, Simone ; Carlino, Gianpaolo ; Ciocca, Claudia ; Corosu, Mirko ; Curatolo, Maria ; Agnello, Luca Dell ; De Salvo, Alessandro ; Girolamo, Ale

Author_Institution

Lab. Naz. di Frascati, INFN, Frascati, Italy

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

516

Lastpage

522

Abstract

With this work we present the activity and performance optimization of the Italian computing centers supporting the ATLAS experiment forming the so-called Italian Cloud. We describe the activities of the ATLAS Italian Tier-2s Federation inside the ATLAS computing model and present some Italian original contributions. We describe StoRM, a new Storage Resource Manager developed by INFN, as a replacement of Castor at CNAF - the Italian Tier-1- and under test at the Tier-2 centers. We also show the failover solution for the ATLAS LFC, based on Oracle DataGuard, load-balancing DNS and LFC daemon reconfiguration, realized between CNAF and the Tier-2 in Roma. Finally we describe the sharing of resources between Analysis and Production, recently implemented in the ATLAS Italian Cloud with the Job Priority mechanism.

Keywords

computer centres; nuclear engineering computing; performance evaluation; resource allocation; ATLAS Italian Tier-2s Federation; ATLAS LFC; ATLAS experiment; INFN; Italian Cloud; Italian computing centers; LFC daemon reconfiguration; Oracle DataGuard; StoRM; failover solution; job priority mechanism; load-balancing DNS; performance optimization; storage resource manager; Clouds; Distributed computing; Grid computing; Large Hadron Collider; Mesons; Middleware; Monitoring; Optimization; Production systems; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Conference_Location

Orlando, FL

ISSN

1095-7863

Print_ISBN

978-1-4244-3961-4

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2009.5401639

Filename

5401639