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Issues in the Design of Scalable Out-of-Core Dense Symmetric Indefinite Factorization Algorithms

Strazdins, Peter


In the factorization of indefinite symmetric linear systems, symmetric pivoting is required to maintain numerical stability, while attaining a reduced floating point operation count. However, symmetric pivoting presents many challenges in the design of efficient algorithms, and especially in the context of a parallel out-of-core solver for dense systems. Here, the search for a candidate pivot in order to eliminate a single column potentially requires a large number of messages and accesses of...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Conference paper
Source: Computational Science - ICCS 2003


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