[Zurück]

H. Moser, U. Schmid:
"Reconciling Fault-Tolerant Distributed Algorithms and Real-Time Computing";
Vortrag: Structural Information and Communication Complexity, Gdansk; 26.06.2011 - 29.06.2011; in: "Proceedings 18th International Colloquium on Structural Information and Communication Complexity (SIROCCO'11)", Springer Berlin / Heidelberg, (2011), ISBN: 978-3-642-22211-5; S. 42 - 53.

We present generic transformations, which allow to translate classic fault-tolerant distributed algorithms and their correctness proofs into a real-time distributed computing model (and vice versa). Owing to the non-zero-time, non-preemptible state transitions employed in our real-time model, scheduling and queuing effects (which are inherently abstracted away in classic zero step-time models, sometimes leading to overly optimistic time complexity results) can be accurately modeled. Our results thus make fault-tolerant distributed algorithms amenable to a sound real-time analysis, without sacrificing the wealth of algorithms and correctness proofs established in classic distributed computing research. By means of an example, we demonstrate that real-time algorithms generated by transforming classic algorithms can be competitive even w.r.t. optimal real-time algorithms, despite their comparatively simple real-time analysis.

http://dx.doi.org/10.1007/978-3-642-22212-2_5