Speaker
Alessandro De Salvo
(Istituto Nazionale di Fisica Nucleare Sezione di Roma 1)
Description
The huge amount of resources available in the Grids, and the necessity
to have the most updated experiment software deployed in all the sites
within a few hours, have spotted the need for automatic installation
systems for the LHC experiments.
In this paper we describe the ATLAS system for the experiment software
installation in LCG/EGEE, based on the Lightweight Job Submission
Framework for Installation (LJSFi). This system is able to automatically
discover, check, install, test and tag the full set of resources made
available in LCG/EGEE to the ATLAS Virtual Organization in a
few hours, depending on the site availability. The installations or
removals may be centrally triggered as well as requested by the end-users
for each site. A fallback solution to the manual operations is
also available, in case of problems.
The installation data, status and job history are centrally kept in
the installation DB and browseable via a web interface. The
installation tasks are performed by one or more automatic agents.
The ATLAS installation team is automatically notified in case of
problems, in order to proceed with the manual operations.
Each user may browse or request an installation activity in a
site, directly by accessing the web pages, being identified by his
personal certificate.
This system has been successfully used by ATLAS since 2003 to deploy
about 60 different software releases and has performed more than 75000
installation jobs so far. The LJSFi framework is currently being extended
to the other ATLAS Grids (NorduGrid and OSG).
| Submitted on behalf of Collaboration (ex, BaBar, ATLAS) | ATLAS |
|---|
Primary author
Alessandro De Salvo
(Istituto Nazionale di Fisica Nucleare Sezione di Roma 1)
Co-authors
Alex Barchiesi
(Università di Roma I "La Sapienza")
Andrzej Olszewski
(Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences)
Carl Gwilliam
(University of Liverpool)
Gernot Krobath
(Ludwig-Maximilians-Universität München)
Grigori Rybkine
(Royal Holloway College)
John Kennedy
(Ludwig-Maximilians-Universität München)
Kondo Gnanvo
(Queen Mary and Westfield College)
