RETRACTED: A Hybrid Ordering Scheme for Efficient Sparse Cholesky Factorization (Retracted Article)

被引：0

作者：

Yao, Lu ^{[1
]}

Wang, Zhenghua ^{[1
]}

Li, Zongzhe ^{[1
]}

Cao, Wei ^{[1
]}

Wang, Yongxian ^{[1
]}

机构：

[1] Natl Univ Def Technol, Sch Comp Sci, Changsha, Hunan, Peoples R China

来源：

2011 INTERNATIONAL CONFERENCE ON ENERGY AND ENVIRONMENTAL SCIENCE-ICEES 2011 | 2011年 / 11卷

关键词：

Cholesky factorization; hybrid ordering; nested dissection; lexicographic ordering; symbolic factorization; NESTED DISSECTION;

D O I：

10.1016/j.egypro.2011.10.251

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

When applying Cholesky factorization method to solving sparse symmetric positive definite system Ax = b, two classes of ordering algorithms are widely used to reduce the amount of fill. In view of their respective advantages and disadvantages, a parallel hybrid ordering scheme is proposed, which is proved to be effective by both theoretical analysis and parallel implementation. It is noteworthy that the algorithm can not only find a good ordering efficiently, but also achieve the result of symbolic factorization simultaneously. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of the Organizers of 2011 International Conference on Energy and Environmental Science.

引用

页数：8

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