Optional third party libraries

We provide interfaces to the following third-party software libraries; note that these are optional, but if you enable them some defaults for multilevel preconditioners may change to reflect their presence.

UMFPACK

[9] A sparse direct factorization package available from
http://www.cise.ufl.edu/research/sparse/umfpack/; provides serial factorization and triangular system solution for double precision real and complex data. We have tested versions 5.4.

SuperLU

[10] A sparse direct factorization package available from
http://crd.lbl.gov/~xiaoye/SuperLU/; provides serial factorization and triangular system solution for single and double precision, real and complex data. We have tested version 4.3.