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.
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.
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 and 5.0.
http://mumps.enseeiht.fr/.
It implements a direct method based on a multifrontal approach which performs
a Gaussian factorization.
We have tested versions 4.10.0 and version 5.0.1.