Next Article in Journal
Novel Design and Adaptive Fuzzy Control of a Lower-Limb Elderly Rehabilitation
Previous Article in Journal
Target Localization Methods Based on Iterative Super-Resolution for Bistatic MIMO Radar
Open AccessFeature PaperArticle

NoCGuard: A Reliable Network-on-Chip Router Architecture

1
Department of Electrical Engineering, University of Engineering & Technology, Taxila 47050, Pakistan
2
Department of Computer Engineering, University of Engineering & Technology, Taxila 47050, Pakistan
3
Department of Information and Communication Engineering, Yeungnam University, Gyeongsan 38541, Korea
*
Authors to whom correspondence should be addressed.
Electronics 2020, 9(2), 342; https://doi.org/10.3390/electronics9020342
Received: 18 December 2019 / Revised: 7 February 2020 / Accepted: 12 February 2020 / Published: 17 February 2020
Aggressive scaling in deep nanometer technology enables chip multiprocessor design facilitated by the communication-centric architecture provided by Network-on-Chip (NoC). At the same time, it brings considerable challenges in reliability because a fault in the network architecture severely impacts the performance of a system. To deal with these reliability challenges, this research proposed NoCGuard, a reconfigurable architecture designed to tolerate multiple permanent faults in each pipeline stage of the generic router. NoCGuard router architecture uses four highly reliable and low-cost fault-tolerant strategies. We exploited resource borrowing and double routing strategy for the routing computation stage, default winner strategy for the virtual channel allocation stage, runtime arbiter selection and default winner strategy for the switch allocation stage and multiple secondary bypass paths strategy for the crossbar stage. Unlike existing reliable router architectures, our architecture features less redundancy, more fault tolerance, and high reliability. Reliability comparison using Mean Time to Failure (MTTF) metric shows 5.53-time improvement in a lifetime and using Silicon Protection Factor (SPF), 22-time improvement, which is better than state-of-the-art reliable router architectures. Synthesis results using 15 nm and 45 nm technology library show that additional circuitry incurs an area overhead of 28.7% and 28% respectively. Latency analysis using synthetic, PARSEC and SPLASH-2 traffic shows minor increase in performance by 3.41%, 12% and 15% respectively while providing high reliability. View Full-Text
Keywords: reliability; reconfigurable architecture; fault tolerance; network-on-chip; permanent faults reliability; reconfigurable architecture; fault tolerance; network-on-chip; permanent faults
Show Figures

Figure 1

MDPI and ACS Style

Shafique, M.A.; Baloch, N.K.; Baig, M.I.; Hussain, F.; Zikria, Y.B.; Kim, S.W. NoCGuard: A Reliable Network-on-Chip Router Architecture. Electronics 2020, 9, 342.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop