Embracing diversity in the Barrelfish manycore operating system

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.


Publication typeInproceedings
Published inProceedings of the Workshop on Managed Many-Core Systems
PublisherAssociation for Computing Machinery, Inc.
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