Quorum-Based Algorithms for Group Mutual Exclusion

  • Authors:
  • Yuh-Jzer Joung

  • Affiliations:
  • -

  • Venue:
  • IEEE Transactions on Parallel and Distributed Systems
  • Year:
  • 2003

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Abstract

We propose a quorum system, which we referred to as the surficial quorum system, for group mutual exclusion. The surficial quorum system is geometrically evident and is easy to construct. It also has a nice structure based on which a truly distributed algorithm for group mutual exclusion can be obtained and processes' loads can be minimized. When used with Maekawa's algorithm, the surficial quorum system allows up to \sqrt{{\frac{2n}{m(m-1)}}} processes to access a resource simultaneously, where n is the total number of processes and m is the total number of groups. We also present two modifications of Maekawa's algorithm so that the number of processes that can access a resource at a time is not limited to the structure of the underlying quorum system, but to the number that the problem definition allows.