A time-optimal distributed sorting algorithm on a line network

  • Authors:
  • Atsushi Sasaki

  • Affiliations:
  • NTT Communication Science Laboratories, NTT Corporation, Kyoto, Japan

  • Venue:
  • Information Processing Letters
  • Year:
  • 2002

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Abstract

We have achieved a strict lower time bound of n -1 for distributed sorting on a line network, where n is the number of processes. The lower time bound has traditionally been considered to be n because it is proved based on the number of disjoint comparison-exchange operations in parallel sorting on a linear array. Our result has overthrown the traditional common belief.