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Extension of inverse-based dropping techniques for ILU preconditioners
- Publication Year :
- 2010
-
Abstract
- In this paper we present a safe and efficient way of dropping for those class of ILU factorizations that their factors are extracted as by-products of AINV process. The drop tolerance parameters of W and Z factors of AINV are selected the same as the drop tolerance parameters of L and U factors respectively. The infinity norms of the columns of W and Z are used to drop entries of L and U. The new dropping technique on L and U is based on monitoring the information of the inverses of L and U. Different dropping strategies for W and Z affect the efficiency of dropping for L and U.
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....330682bf44ed9e812cb3c003d47d5680