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Title:
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New block ILU preconditioner scheme for numerical analysis of very large electromagnetic problems
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Author:
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Heldring, Alexander; Rius Casals, Juan Manuel; Ligthart, Leo P.
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio |
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Abstract:
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Large electromagnetic scattering and radiation
problems are tackled by iterative solvers, which require the use of
huge preconditioners. Most often, the incomplete LU decomposition
(ILU) of the preconditioner is applied to the system matrix at
each iteration. However, the preconditioner ILU cannot be done
in-core when the size of the preconditioning matrix exceeds the
available memory. This paper presents a new preconditioning
scheme to do the preconditioner ILU in small blocks that fit in
core memory. The resulting approach allows the solution of very
large problems in small computers. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica
-Electromagnetic waves -- Scattering
-Algebras, Linear
-Block ILU preconditioner
-Electromagnetic radiation
-Electromagnetic wave scattering
-Iterarive methods
-Matrix decomposition
-Method of moments
-MLMDA
-MLFMA
-MoM
-Numerical analysis
-Ones electromagnètiques
-Àlgebra lineal |
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Rights:
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Document type:
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Article |
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Published by:
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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