Multi-core Spanning Forest Algorithms using the Disjoint-set Data Structure

  • Authors:
  • Md. Mostofa Ali Patwary;Peder Refsnes;Fredrik Manne

  • Affiliations:
  • -;-;-

  • Venue:
  • IPDPS '12 Proceedings of the 2012 IEEE 26th International Parallel and Distributed Processing Symposium
  • Year:
  • 2012

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Abstract

We present new multi-core algorithms for computing spanning forests and connected components of large sparse graphs. The algorithms are based on the use of the disjoint-set data structure. When compared with the previous best algorithms for these problems our algorithms are appealing for several reasons: Extensive experiments using up to 40 threads on several different types of graphs show that they scale better. Also, the new algorithms do not make use of any hardware specific routines, and thus are highly portable. Finally, the algorithms are quite simple and easy to implement.