Adrian Schüpbach, Simon Peter, Andrew Baumann, Timothy Roscoe, Paul Barham, Tim Harris, and Rebecca Isaacs
We discuss diversity and heterogeneity in manycore computer systems,
and identify three distinct types of diversity, all of which
present challenges to operating system designers and application
writers alike. We observe that most current research work has concentrated
on a narrow form of one of these (non-uniform memory
access) to the exclusion of the others, and show with measurement
why this makes sense in the short term.
However, we claim that this is not viable in the long term given
current processor and system roadmaps, and present our approach
to dealing with both heterogeneous hardware within a single system,
and the increasing diversity of complete system configurations:
we directly represent detailed system information in an expressive
“system knowledge base” accessible to applications and
OS subsystems alike, and use this to control tasks such as scheduling
and resource allocation.
In Proceedings of the Workshop on Managed Many-Core Systems
Publisher Association for Computing Machinery, Inc.
Copyright © 2007 by the Association for Computing Machinery, Inc. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from Publications Dept, ACM Inc., fax +1 (212) 869-0481, or firstname.lastname@example.org. The definitive version of this paper can be found at ACM’s Digital Library --http://www.acm.org/dl/.