Counting networks with arbitrary fan-out

  • Authors:
  • Eran Aharonson;Hagit Attiya

  • Affiliations:
  • Department of Computer Science, The Technion, Haifa 32000, Israel;Department of Computer Science, The Technion, Haifa 32000, Israel

  • Venue:
  • Distributed Computing
  • Year:
  • 1995

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Abstract

It is shown that an acyclic smoothing network (and hence counting network) with fan-out n cannot be constructed from balancers of fan-out b1,..., bk, if there exists a prime factor p of n, such that p does not divide bi, for all i, 1 ≤ i ≤ k. This holds regardless of the depth, fan-in or size of the network, as long as they are finite. On the positive side, a simple construction of cyclic counting networks with fan-out n, for arbitrary n, is presented. An acyclic counting network with fan-in and fan-out p2k, for any integer k ≥ 0, is constructed out of 2-balancers and p-balancers.