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89/2007 : Mapping a Fault-Tolerant Distributed Algorithm to Systems on Chip

RR Number
89/2007
Conference
11th Euromicro conference on Digital System Design Architectures, Methods and Tools (DSD'08), p. 242-249, Parma, Italy, September 2008
Author(s)
Gottfried Fuchs, Matthias Fuegger, Ulrich Schmid, Andreas Steininger
Abstract
Systems on chip (SoC) have much in common with traditional (networked) distributed systems in that they consist of largely independent components with dedicated communication interfaces. Therefore the adoption of classic distributed algorithms for SoCs suggests itself. The implementation complexity of these algorithms, however, significantly depends on the underlying failure models. In traditional software-based solutions this is normally not an issue, such that the most unconstrained, namely the Byzantine, failure model is often applied here. Our case study of a hardware-implemented tick synchronization algorithm shows, however, that in an SoC-implementation substantial hardware savings can result from restricting the failure model to benign failures (omissions, crashes). On the downside, it turns out that such restricted failure models have a fairly poor coverage with respect to the hardware faults occurring in practice, and that additional measures to enforce these restrictions may entail an implementation overhead that outweighs the gain obtained in the implementation of a simpler algorithm. As a remedy we investigate the potential of failure transformation in this context and show that this technique may indeed yield an optimized overall solution.
Bibtex
@inproceedings{FFSS:DSD08,
  author =       {Gottfried Fuchs and Matthias Fuegger and Ulrich Schmid and Andreas Steininger},
  title =        {Mapping a Fault-Tolerant Distributed Algorithm to Systems on Chip},
  booktitle =      {11th Euromicro conference on Digital System Design Architectures, Methods and Tools (DSD'08)},
  year =         {2008},
  month =        {September},
  pages = {242-249},
  address = {Parma, Italy},
  doi = {10.1109/DSD.2008.65},
}
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