Dynamic parallel reconfiguration for self-adaptive hardware architectures

Fiack, Laurent (ETIS Lab, CNRS, ENSEA, UCP, Cergy-Pontoise, France) ; Miramond, Benoît (ETIS Lab, CNRS, ENSEA, UCP, Cergy-Pontoise, France) ; Upegui, Andres (School of Engineering, Architecture and Landscape (hepia), HES-SO // University of Applied Sciences Western Switzerland) ; Vannel, Fabien (School of Engineering, Architecture and Landscape (hepia), HES-SO // University of Applied Sciences Western Switzerland)

Adaptive Hardware Systems can rely on software or hardware adaptation. Software adaptation can be globally assimilated to mode switching, either at a technological or hardware level (DVFS, Idle processor mode ...), or at the application level (bandwidth adaptation in telecommunication, multispectral cameras, ...). Hardware adaptation corresponds to a deeper change in the internal organization of the computing architecture of an embedded system. It enables more powerful adaptation but is currently limited by the reconfiguration (tool and architecture) of today's FPGA devices. We present in this paper a multi-FPGA platform designed to exhibit unique computing capabilities. The joint design of the electronic board and the internal architecture of each reconfigurable device permits dynamic parallel (and not partial) reconfiguration of several parts of the system while maintaining global routing and local computation in the rest of the system. Dynamic parallel reconfiguration and technological independence are enabled by considering reconfiguration at coarse grain. We describe in the paper the hardware elements composing the platform. The specific design of the global system allowed us to reach a fully operational platform. We present statistical experiments to evaluate the inter-chip network capacity which show that our platform supports up to 18 parallel reconfigurations per second.

Type de conférence:
full paper
Ingénierie et Architecture
HEPIA - Genève
inIT - Institut d'Ingénierie Informatique et des Télécommunications
Adresse bibliogr.:
Leicester, UK, 14-17 July 2014
Leicester, UK
14-17 July 2014
7 p.
Publié dans:
Proceedings of 2014 NASA/ESA Conference on Adaptive Hardware and Systems (AHS), 14-17 July 2014, Leicester, UK
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