sci-libs/parmetis
Parallel (MPI) unstructured graph partitioning library
USE Flags
examples
Global: Install examples, usually source code
openmp
Global: Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
pcre
Global: Adds support for Perl Compatible Regular Expressions
doc
Global: Adds extra documentation (API, Javadoc, etc)