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arXiv 0907.1375cs.DC
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PT-Scotch:一个高效的并行图排序工具

PT-Scotch: A tool for efficient parallel graph ordering

Cédric Chevalier, François Pellegrini

摘要:

大型图的并行排序是一个困难的问题,因为一方面最小度算法不能很好地并行化,另一方面用嵌套剖分算法获得高质量的排序需要高效的图二分算法,其最佳顺序实现也很难并行化。本文提出了一套算法,在PT-苏格兰软件包中实现,它允许一个大型图形并行排序,产生的排序的质量只略差于一个国家的最先进的顺序算法。我们的实现使用经典的嵌套解剖方法,但依赖于几个新的功能来解决并行图二分问题。由于这些改进,PT-Scotch在大量处理器上始终比ParMeTiS产生更好的订单。

英文摘要:

The parallel ordering of large graphs is a difficult problem, because on the one hand minimum degree algorithms do not parallelize well, and on the other hand the obtainment of high quality orderings with the nested dissection algorithm requires efficient graph bipartitioning heuristics, the best sequential implementations of which are also hard to parallelize. This paper presents a set of algorithms, implemented in the PT-Scotch software package, which allows one to order large graphs in parallel, yielding orderings the quality of which is only slightly worse than the one of state-of-the-art sequential algorithms. Our implementation uses the classical nested dissection approach but relies on several novel features to solve the parallel graph bipartitioning problem. Thanks to these improvements, PT-Scotch produces consistently better orderings than ParMeTiS on large numbers of processors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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