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Article
Report number	physics/0306103 ; CHEP-2003-TUCP005
Title	AliEn - EDG Interoperability in ALICE
Related title	ALICE Environment European Data Grid Alpha Linux cluster engine
Author(s)	Bagnasco, S. (INFN, Turin) ; Cerello, P. (INFN, Turin) ; Barbera, R. (Catania U. ; INFN, Catania) ; Buncic, P. (CERN) ; Carminati, F. (CERN) ; Saiz, P. (CERN)
Publication	2003
Imprint	13 Jun 2003
Number of pages	3
In:	eConf C 0303241 (2003) pp.TUCP005
In:	2003 Conference for Computing in High-Energy and Nuclear Physics, La Jolla, CA, USA, 24 - 28 Mar 2003, pp.TUCP005
Subject category	Other Fields of Physics
Accelerator/Facility, Experiment	CERN LHC ; ALICE
Abstract	AliEn (ALICE Environment) is a GRID-like system for large scale job submission and distributed data management developed and used in the context of ALICE, the CERN LHC heavy-ion experiment. With the aim of exploiting upcoming Grid resources to run AliEn-managed jobs and store the produced data, the problem of AliEn-EDG interoperability was addressed and an in-terface was designed. One or more EDG (European Data Grid) User Interface machines run the AliEn software suite (Cluster Monitor, Storage Element and Computing Element), and act as interface nodes between the systems. An EDG Resource Broker is seen by the AliEn server as a single Computing Element, while the EDG storage is seen by AliEn as a single, large Storage Element: files produced in EDG sites are registered in both the EDG Replica Catalogue and in the AliEn Data Catalogue, thus ensuring accessibility from both worlds. In fact, both registrations are required: the AliEn one is used for the data management, the EDG one to guarantee the integrity and access to EDG produced data. A prototype interface has been successfully deployed using the ALICE AliEn Server and the EDG and DataTAG Testbeds.

Corresponding record in: Inspire
Email contact: bagnasco@to.infn.it