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Dokumenttyp:
Technical Report 
Autor(en):
Thomas Huckle 
Titel:
Approximate Sparsity Patterns for the Inverse of a Matrix and Preconditioning 
Abstract:
We consider a general sparse matrix A. Computing a sparse approximate inverse matrix M by minimizing \begin{math} \|AM - E\| \end{math} in the Frobenius norm is very useful for deriving preconditioners in iterative solvers, especially in a parallel environment. The problems, that appear in this connection in a distributed memory setting, are the distribution of the data - mainly submatrices of A - on the different processors. An a-priori knowledge of the data that has to be sent to a processor w...    »
 
Stichworte:
Sparse Approximate Inverse; Preconditioning 
Jahr:
1998 
Jahr / Monat:
1998-11-01 00:00:00 
Seiten/Umfang:
21