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

A sparse direct factorization package available from
http://www.cise.ufl.edu/research/sparse/umfpack/; provides serial factorization and solution for double precision real and complex double precision data. We have tested versions 4.4 and 5.1;

SuperLU

A sparse direct factorization package available from
http://crd.lbl.gov/~xiaoye/SuperLU/; provides serial factorization and solution for single and double precision real and complex data. We have tested versions 3.0 and 3.1.

SuperLU_Dist

A sparse direct factorization package available from the same site as SuperLU; provides parallel factorization and solution for real and complex double precision data. We have tested version 2.1.