Simplifying Itai-Rodeh Leader Election for Anonymous Rings

  • Authors:
  • Wan Fokkink;Jun Pang

  • Affiliations:
  • Department of Software Engineering, CWI, Amsterdam, The Netherlands and Department of Computer Science, Vrije Universiteit Amsterdam, The Netherlands;Department of Software Engineering, CWI, Amsterdam, The Netherlands

  • Venue:
  • Electronic Notes in Theoretical Computer Science (ENTCS)
  • Year:
  • 2005

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Abstract

We present two probabilistic leader election algorithms for anonymous unidirectional rings with FIFO channels, based on an algorithm from Itai and Rodeh [A. Itai and M. Rodeh. Symmetry breaking in distributive networks. In Proc. FOCS'81, pp. 150-158. IEEE Computer Society, 1981]. In contrast to the Itai-Rodeh algorithm, our algorithms are finite-state. So they can be analyzed using explicit state space exploration; we used the probabilistic model checker PRISM to verify, for rings up to size four, that eventually a unique leader is elected with probability one.