You need to use this command line option -pc_type lu -pc_factor_mat_solver_package mumps to use mumps.
Cheers On 29 October 2011 22:10, Dominik Szczerba <dominik at itis.ethz.ch> wrote: > I configured petsc with mumps. How can I use it? I do not seem to find > any hints in the documentation, and naive -ksp_type mumps fails with > an error "Unknown type" > > Any hints are appreciated. > > Dominik >