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Multi-core Composability in the Face of Memory Bus Contention

Authors:

Moris Behnam, Rafia Inam, Thomas Nolte, Mikael Sjödin

Research group:

Complex Real-Time Embedded Systems

Publication Type:

Journal article

Venue:

ACM SIGBED Review. Special Issue on 5th Workshop on Compositional Theory and Technology for Real-Time Embedded Systems (CRTS 2012)

Publisher:

SIGBED Review, Volume 10, Number 3, October 2013 Special Issue on 5th Workshop on CRTS 2012

DOI:

10.1145/2544350.2544354

Abstract

In this paper we describe the problem of achieving composability of independently developed real-time subsystems to be executed on a multicore platform.We evaluate existing work for achieving real-time performance on multicores and illustrate their lack with respect to composability. To better address composability we present a multi-resource server-based scheduling technique to provide predictable performance when composing multiple subsystems on a multicore platform. To achieve composability also on multicore platforms, we propose to add memory-bandwidth as an additional server resource. Tasks within our multi-resource servers are guaranteed both CPU- and memory-bandwidth; thus the performance of a server will become independent of resource usage by tasks in other servers. We are currently implementing multi-resource servers for the Enea’s OSE operating system for a P4080 8-core processor to be tested with software for a 3G-basestation.

Bibtex

@article{Behnam2647,
author = {Moris Behnam and Rafia Inam and Thomas Nolte and Mikael Sj{\"o}din},
title = {Multi-core Composability in the Face of Memory Bus Contention},
volume = {10},
number = {3},
pages = {35--42},
month = {October},
year = {2013},
journal = {5th International Workshop on Compositional Theory and Technology for Real-Time Embedded Systems (CRTS12)},
publisher = {SIGBED Review, Volume 10, Number 3, October 2013 Special Issue on 5th Workshop on CRTS 2012},
url = {http://www.es.mdu.se/publications/2647-}
}