Speaker
I. Bird
(CERN)
Description
In September 2003 the first LCG-1 service was put into production at most of the
large Tier 1 sites and was quickly expanded up to 30 Tier 1 and Tier 2 sites by the
end of the year. Several software upgrades were made and the LCG-2 service was put
into production in time for the experiment data challenges that began in February
2004 and continued for several months. In particular LCG-2 introduced transparent
access to mass storage and managed disk-only storage elements, and a first release
of the Grid File Access library. Much valuable experience was gained during the
data challenges in all aspects from the functionality and use of the middleware, to
the deployment, maintenance, and operation of the services at many sites. Based on
this experience a program of work to address the functional and operational issues
is being implemented. The goal is to focus on essential areas such as data
management and to build by the end of 2004 a basic grid system capable of handling
the basic needs of LHC computing, providing direction for future middleware and
service development.
The LCG-2 infrastructure also forms the production service of EGEE. This involves
supporting new application communities, bringing in new sites not associated with
HEP and evolving a full scale 24x7 user and operational support structure. We will
describe the EGEE infrastructure, how it supports and interacts with LCG, and how
we expect the infrastructure to evolve over the next year of the EGEE project.
Primary author
I. Bird
(CERN)
