Truncated incomplete factorization for conjugate-gradient methods in two and three dimensions (Q1111332)
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scientific article; zbMATH DE number 4076458
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Truncated incomplete factorization for conjugate-gradient methods in two and three dimensions |
scientific article; zbMATH DE number 4076458 |
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Truncated incomplete factorization for conjugate-gradient methods in two and three dimensions (English)
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1988
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The author investigates how the computational performance of the conjugate gradient method changes when factorization is made more incomplete. Both two- and three-dimensional truncated factorization are treated, considering their performance for difference matrices. For two- dimensional problems the factorization which uses all nine bands has all in all the best performance. In three dimensions the orthogonal factorization method generally gives the best results.
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truncated incomplete factorizations
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conjugate gradient method
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orthogonal factorization
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