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The round complexity of distributed sorting: Extended abstract

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Abstract

We consider the model of fully connected networks, where in each round each node can send an O(log n)-bit message to each other node (this is the CONGEST model with diameter 1). It is known that in this model, min-weight spanning trees can be found in O(log log n) rounds. In this paper we show that distributed sorting, where each node has at most n items, can be done in time O(log log n) as well. It is also shown that selection can be done in O(1) time. (Using a concurrent result by Lenzen and Wattenhofer, the complexity of sorting is further reduced to constant.) Our algorithms are randomized, and the stated complexity bounds hold with high probability.

Original languageEnglish GB
Title of host publicationPODC'11 - Proceedings of the 2011 ACM Symposium Principles of Distributed Computing
PublisherAssociation for Computing Machinery
Pages249-255
Number of pages7
ISBN (Print)9781450307192
DOIs
StatePublished - 6 Jun 2011

Publication series

NameProceedings of the Annual ACM Symposium on Principles of Distributed Computing

Keywords

  • communication complexity
  • congest model
  • distributed sorting
  • network algorithms

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

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