Speaker
L. Poncet
(LAL-IN2p3)
Description
In the last few years grid software (middleware) has become available
from various sources. However, there are no standards yet which
allow for an easy integration of different services.
Moreover, middleware was produced by different projects with the main
goal of developing new functionalities rather than production quality
software.
In the context of the LHC Computing Grid project (LCG) an integration,
testing and certification activity is ongoing which aims at producing
a stable coherent set of services.
Here we report on the processes employed to produce the LCG middleware
release and related activities, including the infrastructures used, the
activities needed to integrate the various components and the
certification process.
Our certification process consists of a continuous iterative cycle that
also involves feedback from the LCG production system and input from
the software providers.
The architecture of the LCG middleware is described, including
additional components developed by LCG to improve scalability and
performance.
Other associated activities include packaging for deployment, porting
to different platforms, debugging and patching of the software.
Functionality and stress tests are performed via a large test-bed
infrastructure that allows for benchmarking of different configurations.
We describe also the results of our tests and our experience
collected during the building of the LCG infrastructure.
Primary authors
C. Osuna
(University of Granada (Spain))
D. Qing
(Academia Sinica (Taiwan))
D. Smith
(CERN)
F. Chollet
(LAPP-IN2P3)
G. Grosdidier
(LAL-IN2P3)
J-P. Baud
(CERN)
L. Poncet
(LAL-IN2p3)
M. Litmaath
(CERN)
M. Serra
(INFN-CERN)
P. Bettini
(INFN-CERN)
Z. Sekera
(CERN)
