Bridging the Gap between Resilient Networks-on-Chip and Real-Time Systems
Conventional fault-tolerance approaches for Networks-on-Chip (NoCs) cannot be applied to high dependability systems due to their different goals and constraints. These systems impose strict integrity, resilience and real-time requirements. In order to meet these requirements, all possible effects of random hardware errors must be taken into account, silent data corruption must be prevented and the resulting system must be predictable in the presence of errors. In this paper, we present a wormhole-switched NoC with virtual channels for high dependability systems hardened against soft errors. The NoC is developed based on results of a Failure Mode and Effects Analysis. It efficiently handles errors in different network layers and operates with formal guarantees. Our experimental evaluation, including an industrial avionics use case, shows that the network is able to achieve predictable behavior even in aggressive environments with very high error rates while presenting competitive overheads.
License Holder: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Use and reproduction:
All rights reserved