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Mixed precision in subspace iteration‐based eigensolvers
Author(s) -
Galgon Martin,
Huber Sarah,
Lang Bruno
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800334
Subject(s) - subspace topology , convergence (economics) , computation , computer science , limit (mathematics) , krylov subspace , algorithm , mathematics , iterative method , artificial intelligence , mathematical analysis , economics , economic growth
We consider the use of mixed precision in three subspace iteration‐based eigensolvers. We show that for several algorithmic steps, computation in single precision will temporarily limit convergence.