Speaker
Dr
Armando Fella
(INFN, Pisa)
Description
The increasing instantaneous luminosity of the Tevatron collider will soon cause the
computing requirements for data analysis and MC production to grow larger than the
dedicated CPU resources that will be available. In order to meet future demands, CDF
is investing in shared, Grid, resources. A significant fraction of opportunistic Grid
resources will be available to CDF before LHC era starts and CDF could greatly
benefit from using them. CDF is therefore reorganizing its computing model to be
integrated with the new Grid model. LcgCAF builds upon the gLite Middleware in order
to establish a standard CDF environment transparent to the end-users. LcgCAF is a
suite of software entities that handle authentication/security, job submission and
monitoring and data handling tasks. CDF authentication and security are entirely
based on the Kerberos 5 system, so we needed to develop a kerberos certificate
renewing service based on GSI certificates, to guarantee job output transfer to CDF
disk servers. An enqueuing and status monitoring functionality was introduced to make
the CAF submission latencies independent of the gLite Work Load Management System
ones. The CDF batch monitoring is presently based on information from the GridIce
monitoring and the LCG Logging and Bookkeeping systems. Interactive monitoring is
based on the Clarens Web Services Framework. The beta version of LcgCAF is already
deployed and is able to run CDF jobs on most INFN-Grid sites.
Summary
LcgCAF project builds upon the GRID gLite Middleware in order to establish a standard
CDF environment transparent to the end-users. LcgCAF is a suite of
software entities that handle authentication/security, job submission and
monitoring and data handling tasks.
Primary author
Dr
Armando Fella
(INFN, Pisa)
Co-authors
Dr
Daniel Jeans
(INFN, CNAF)
Dr
Donatella Lucchesi
(INFN, Padova)
Dr
Elliot Lipeles
(University of California, San Diego)
Dr
Francesco Delli Paoli
(INFN, Padova)
Prof.
Frank Wuerthwein
(University of California, San Diego)
Dr
Igor Sfiligoi
(INFN, Frascati)
Dr
Mark Neubauer
(Fermi National Accelerator Laboratory)
Dr
Shih-Chieh Hsu
(Fermi National Accelerator Laboratory)
Dr
Stefano Belforte
(INFN, Trieste)
Dr
Subir Sarkar
(INFN, Bologna)
