Summary: Gathering at the Well:
Creating Communities for Grid I/O #
Douglas Thain, John Bent, Andrea Arpaci­Dusseau, Remzi Arpaci­Dusseau, and Miron Livny
Computer Sciences Department
University of Wisconsin ­ Madison
1210 West Dayton Street, Madison WI 53706
ABSTRACT
Grid applications have demanding I/O needs. Schedulers must
bring jobs and data in close proximity in order to satisfy through­
put, scalability, and policy requirements. Most systems accom­
plish this by making either jobs or data mobile. We propose
a system that allows jobs and data to meet by binding exe­
cution and storage sites together into I/O communities which
then participate in the wide­area system. The relationships
between participants in a community may be expressed by the
ClassAd framework. Extensions to the framework allow com­
munity members to express indirect relations. We demonstrate
our implementation of I/O communities by improving the per­
formance of a key high­energy physics simulation on an inter­
national distributed system.

Source: Arpaci-Dusseau, Remzi - Department of Computer Sciences, Department of Computer Sciences, University of Wisconsin at Madison
Liblit, Ben - Department of Computer Sciences, University of Wisconsin at Madison

Collections: Computer Technologies and Information Sciences