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DOI 10.5286/raltr.2008007
Persistent URL http://purl.org/net/epubs/work/43237
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Record Id 43237
Title The effects of scalings on the performance of a sparse symmetric indefinite solver
Abstract Scaling is an important part of solving large sparse symmetric linear systems. In a direct method where the analysis is based only on structure it can help by reducing the number of delayed pivots and hence the memory required, the size of the computed factors, and total solution time. In this paper, we examine the effects of scaling on the performance of a sparse symmetric indefinite solver that implements a multifrontal algorithm. We compare several scalings from the mathematical software library HSL, using a large test set of 367 problems from a wide range of practical applications.
Organisation CSE , CSE-NAG , STFC
Keywords sparse symmetric matrices , sparse direct methods , scaling , indefinite factorizations , multi-frontal approach
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report RAL Technical Reports RAL-TR-2008-007. STFC, 2008. RALTR2008007.pdf 2008