- ...indefinite.
- By ``very indefinite,'' we mean that the
matrix has many negative and many positive eigenvalues.
- ...matrices.
- Two possible exceptions to this
recommendation are (1) if the matrix has no or very small cliques
and identical nodes (in which case the factorization may be very slow) and
(2) if the space for the incomplete factorization is not available.
- ...number.
-
It is important to note that this routine will be called by a
processor for only those global row numbers that are local
to that processor or for those global row numbers that are connected in
the sparse matrix to rows that are local to that processor.