NDLI: ROAdNoC: Runtime observability for an adaptive network on chip architecture

Content Provider	IEEE Xplore Digital Library
Author	Al Faruque, M.A. Ebi, T. Henkel, J.
Copyright Year	2008
Description	Author affiliation: Dept.for Embedded Syst., Univ. of Karlsruhe, Karlsruhe (Al Faruque, M.A.; Ebi, T.; Henkel, J.)
Abstract	Hard-to-predict system behavior and/or reliability issues resulting from migrating to new technology nodes requires considering runtime adaptivity in future on-chip systems. Run-time observability is a prerequisite for runtime adaptivity as it is providing necessary system information gathered on-the-fly. We are presenting the first comprehensive runtime observability infrastructure for an adaptive network on chip architecture which is flexible (e.g. in choosing the routing path), hardly intrusive, and requires little additional overhead (around 0.7% of the total link bandwidth). The hardware overhead is negligible, too, and is in fact less than the hardware savings due to resource multiplexing capabilities that are achieved through runtime observability/adaptivity. As an example, our on-demand buffer assignment scheme increases the buffer utilization and decreases the overall buffer requirements by an average of 42% (the buffer area amounts to about 60% of the entire router area [19]) in our case study analysis compared to a fixed buffer assignment scheme [7]. Our runtime observability on an average also increases the connection success rate by 62% compared to the case without runtime observability for the applications from the E3S benchmark suite [6]. We show the advantages obtained through runtime observability and compare with state-of-the art communication-centric designs.
Starting Page	543
Ending Page	548
File Size	350989
Page Count	6
File Format	PDF
ISBN	9781424428199
ISSN	10923152
DOI	10.1109/ICCAD.2008.4681628
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Runtime Observability Adaptive systems Network-on-a-chip Hardware Monitoring System-on-a-chip Bandwidth Routing Application software
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Computer Science Applications Software

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