A parallel algorithm for traffic control problems in three-stage connecting networks

Nobuo Funabiki, Yoshiyasu Takefuji

Research output: Contribution to journalArticle

2 Citations (Scopus)


A parallel heuristic algorithm for traffic control problems in three-stage connecting networks is presented in this paper. A three-stage connecting network consists of an input crossbar switching stage, an intermediate crossbar switching stage, and an output crossbar switching stage. The goal of our algorithm is to quickly and efficiently find a conflict-free switching assignment for communication demands through the network. The algorithm requires n2 × m processing elements for the network composed of n input/output switches and m intermediate switches, where it runs not only on a sequential machine, but also on a parallel machine with maximally n2 × m processors. The algorithm was verified by 1100 simulation runs with the network size from 102 × 7 to 502 × 27. The simulation results show that the algorithm can find a solution in nearly constant time with n2 × m processors.

Original languageEnglish
Pages (from-to)236-240
Number of pages5
JournalJournal of Parallel and Distributed Computing
Issue number2
Publication statusPublished - 1994 Feb


ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computer Networks and Communications
  • Artificial Intelligence

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