The Newton scheme is used to construct an approximate inverse preconditioner for the Schur complement. However, this scheme is very expensive because of the computation cost of the matrix-matrix product. In this paper, the computation cost of the Newton scheme is reduced by implementing the preconditioner implicitly using the matrix-vector product. We also show that such an implementation is less expensive than computing the preconditioner explicitly.
|Issue number||5 ELECTRONIC SUPPL.|
|Publication status||Published - 2004|
ASJC Scopus subject areas
- Mathematics (miscellaneous)