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    并行归并排序算法

    A PARALLEL MERGING/SORTING ALGORITHM

    • 摘要: 构造效率为O(1)的并行算法是一个引人注目的问题。[1]和[2]分别提出了并行度为O(logn)和O(n1/2)的、效率为O(1)的并行排序算法。本文提出一种新的并行排序算法,其效率为O(1),而并行步数少于[1]和[2]的算法的并行步数。经过改进后,在保持效率为O(1)的情况下,可进一步将并行度扩大到O(n1/2logn)。

       

      Abstract: It is noticeable to make up a parallel algorithm whose efficiency is O(1). 1 and 2show two such parallel algorithms using O(log n) and O(n1/2) processors respectively. In this paper, a new parallel sorting algorithm is proposed. Its efficiency is O(1), and it works in much fewer steps. It can work in O(n 1/2) steps using O(n1/2 log n) processors after modification.

       

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