All-Pairs Shortest Paths Computation in the BSP Model

  • Authors:
  • Alexandre Tiskin

  • Affiliations:
  • -

  • Venue:
  • ICALP '01 Proceedings of the 28th International Colloquium on Automata, Languages and Programming,
  • Year:
  • 2001

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Abstract

The model of bulk-synchronous parallel (BSP) computation is an emerging paradigm of general-purpose parallel computing. We propose a new p-processor BSP algorithm for the all-pairs shortest paths problem in a weighted directed dense graph. In contrast with the general algebraic path algorithm, which performs O(p1/2) to O(p2/3) global synchronisation steps, our new algorithm only requires O(log p) synchronisation steps.