Speaker
I. Terekhov
(FERMI NATIONAL ACCELERATOR LABORATORY)
Description
SAMGrid is a globally distributed system for data handling and job management,
developed at Fermilab for the D0 and CDF experiments in Run II. The Condor
system is being developed at the University of Wisconsin for management
of distributed resources, computational and otherwise. We briefly review the
SAMGrid architecture and its interaction with Condor, which was presented
earlier. We then present our experiences using the system in production,
which have two distinct aspects.
At the global level, we deployed Condor-G, the Grid-extended Condor, for
the resource brokering and global scheduling of our jobs. At the heart of
the system is Condor's Matchmaking Service. As a more recent work at the
computing element level, we have been benefitting from the large computing
cluster at the University of Wisconsin campus. The architecture of
the computing facility and the philosophy of Condor's resource management
have prompted us to improve the application infrastructure for D0 and CDF,
in aspects such as parting with the shared file system or reliance on
resources being dedicated. As a result, we have increased productivity
and made our applications more portable and Grid-ready. We include some
statistics gathered from our experience. Our fruitful collaboration
with the Condor team has been made possible by the Particle Physics Data Grid.
Primary authors
A. Baranovski
(Fermilab)
A. Kreymer
(FERMI NATIONAL ACCELERATOR LABORATORY)
A. Kumar
(Fermilab)
A. Lyon
(FERMI NATIONAL ACCELERATOR LABORATORY)
A. Nishandar
(University of Texas, Arlington)
G. Garzoglio
(FERMI NATIONAL ACCELERATOR LABORATORY)
I. Terekhov
(FERMI NATIONAL ACCELERATOR LABORATORY)
J. Trumbo
(Fermilab)
L. Loebel Carpenter
(Fermilab)
L. Lueking
(FERMI NATIONAL ACCELERATOR LABORATORY)
R. Herber
(FERMI NATIONAL ACCELERATOR LABORATORY)
R. Illingworth
(FERMI NATIONAL ACCELERATOR LABORATORY)
R. Kennedy
(FERMI NATIONAL ACCELERATOR LABORATORY)
R. St.Denis
(Glasgow University)
S. Jain
(University of Texas, Arlington)
S. Veseli
(Fermilab)
S. White
(Fermilab)
W. Merritt
(FERMI NATIONAL ACCELERATOR LABORATORY)
