-pc_type ilu -pc_factor_mat_ordering_type rcm But don’t get your hopes up to high, in our experience if you have any reasonable ordering of your underlying mesh/grid these orderings don’t generally help ILU much.
Barry On Feb 14, 2014, at 10:13 AM, Qin Lu <[email protected]> wrote: > Hello, > > Is the RCM reordering available for ILU preconditioner in PETSc? The manual > says RCM works with LU factorization, but it does not mention it for > preconditioners. > > If not, is there any reordering method working for ILU in PETSc, or the users > have to do the work outside PETSc? > > Thanks a lot for your information. > > Qin
