Speaker
Mr
Laurence Field
(CERN)
Description
Since CHEP2005, the LHC Computing Grid (LCG) has grown from 30 sites to over 160
sites and this has increased the load on the informations system. This paper
describes the recent changes to information system that were necessary to keep pace
with the expanding grid. The performance of the a key component, the Berkley Database
Information Index (BDII), is given special attention. During deployment it was found
that the idea of Virtual Organization (VO) BDIIs was not sufficient and how this lead
to the development of the Freedom of Choice for Resources (FCR) mechanism to enable
VOs to have more control over their production. Other improvements are also mentioned
including the work to upgrade the Glue to version 1.2 and plan for Glue version 2.
Primary author
Mr
Laurence Field
(CERN)
Co-author
Dr
Markus Schulz
(CERN)
