Abstract
A fault-tolerant routing algorithm in Network-on-Chip architectures provides adaptivity for on-chip communications. Adding fault-tolerance adaptivity to a routing algorithm increases its design complexity and makes it prone to deadlock and other problems if improperly implemented. Formal verification techniques are needed to check the correctness of the design. This paper performs formal analysis on an extension of the link-fault tolerant Network-on-Chip architecture introduced by Wu et al that supports multiflit wormhole routing. This paper describes several lessons learned during the process of constructing a formal model of this routing architecture. Finally, this paper presents how the deadlock freedom and tolerance to a single-link fault is verified for a two-by-two mesh version of this routing architecture.
This work is supported by the National Science Foundation under Grants CNS-0930510 and CNS-0930225. Part of this work was performed during a visit of the first author at INRIA Grenoble Rhône-Alpes.
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Zhang, Z., Serwe, W., Wu, J., Yoneda, T., Zheng, H., Myers, C. (2014). Formal Analysis of a Fault-Tolerant Routing Algorithm for a Network-on-Chip. In: Lang, F., Flammini, F. (eds) Formal Methods for Industrial Critical Systems. FMICS 2014. Lecture Notes in Computer Science, vol 8718. Springer, Cham. https://doi.org/10.1007/978-3-319-10702-8_4
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