> On Sep 23, 2017, at 8:38 PM, Evan Um <[email protected]> wrote: > > Dear PETSC Users, > > My system matrix comes from finite element modeling and is complex and > unstructured. Its typical size is a few millions-by a few millions. I > wondering if I can use MUMPS parallel direct solver as a preconditioner in > PETSC. For example, I want to pass factored matrices to Krylov iterative > solvers such as QMR. Is there any PETSC+MUMPS example code for the purpose?
You don't pass factored matrices you just pass the original matrix and use -pc_type lu -pc_factor_mat_solver_package mumps > Can PETSC call the latest MUMPS that supports block low rank approximation? No, send us info on it and we'll see if we can add an interface > > In advance, thank you very much for your comments. > > Best, > Evan > > > > >
