Multigrid treatment and robustness enhancement for factored sparse approximate inverse preconditioning
β Scribed by Kai Wang; Jun Zhang
- Book ID
- 108415806
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 146 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0168-9274
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## Abstract For efficiently solving large dense complex linear systems that arise in electric field integral equations (EFIE) of electromagnetic scattering problems, the fast multipole method (FMM) is used to accelerate the matrixβvector product operations, and the sparse approximate inverse (SAI)
We investigate the use of sparse approximate inverse techniques in a multilevel block ILU preconditioner to design a robust and efficient parallelizable preconditioner for solving general sparse matrices. The resulting preconditioner retains robustness of the multilevel block ILU preconditioner (BIL