计算机工程与应用 ›› 2010, Vol. 46 ›› Issue (3): 69-71.DOI: 10.3778/j.issn.1002-8331.2010.03.021

• 研发、设计、测试 • 上一篇    下一篇

并行最短路径搜索算法的设计与实现

卢 照,师 军   

  1. 陕西师范大学 计算机科学学院,西安 710062
  • 收稿日期:2008-10-30 修回日期:2009-01-04 出版日期:2010-01-21 发布日期:2010-01-21
  • 通讯作者: 卢 照

Design and implementation of parallel shortest path search algorithm

LU Zhao,SHI Jun   

  1. College of Computer Science,Shaanxi Normal University,Xi’an 710062,China
  • Received:2008-10-30 Revised:2009-01-04 Online:2010-01-21 Published:2010-01-21
  • Contact: LU Zhao

摘要: 针对串行最短路径搜索算法本身固有的局限性,难以随着网络规模的增大而提高搜索速度的问题,设计并实现了一种基于并行Dijkstra思想的并行最短路径搜索算法,使算法复杂度由ON2)减少到ON2/p+N*(p-1)),提高了算法的效率。实验结果表明,该算法搜索速度快且性能稳定,当结点数目相当庞大时,算法的优越性更加明显。

关键词: 最短路径, 并行机环境, Message Passing Interface(MPI), 并行搜索算法

Abstract: In view of the serial search for the shortest path algorithm inherent limitations and the difficult to raising the issue of search speed as the size of the network increases,the parallel shortest path search algorithm is designed and implemented based on the parallel Dijkstra’s algorithm idea.The complexity of the algorithm reduces to ON2/p+N*(p-1)) as compared with the complexity ON2) of serial Dijkstra’s algorithm.Experimental results show that the parallel shortest path search algorithm has fast and stable performance.The algorithm has better performance when the network contains a substantial number of nodes.

Key words: the shortest path, parallel computer environment, Message Passing Interface(MPI), parallel search algorithm

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