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- W4353116161 abstract "We consider the split-preconditioned FGMRES method in a mixed precision framework, in which four potentially different precisions can be used for computations with the coefficient matrix, application of the left preconditioner, application of the right preconditioner, and the working precision. Our analysis is applicable to general preconditioners. We obtain bounds on the backward and forward errors in split-preconditioned FGMRES. Our analysis further provides insight into how the various precisions should be chosen; under certain assumptions, a suitable selection guarantees a backward error on the order of the working precision." @default.
- W4353116161 created "2023-03-23" @default.
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- W4353116161 date "2023-03-21" @default.
- W4353116161 modified "2023-09-25" @default.
- W4353116161 title "The stability of split-preconditioned FGMRES in four precisions" @default.
- W4353116161 doi "https://doi.org/10.48550/arxiv.2303.11901" @default.
- W4353116161 hasPublicationYear "2023" @default.
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