27 September 2004 to 1 October 2004
Interlaken, Switzerland
Europe/Zurich timezone

SAMGrid Experiences with the Condor Technology in Run II Computing

29 Sep 2004, 10:00
Coffee (Interlaken, Switzerland)


Interlaken, Switzerland

Board: 60
poster Track 4 - Distributed Computing Services Poster Session 2




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)

Presentation Materials