> > >> > >> >> Second question (less important): I didn't manage to change this at the >> command line. I would have thought -mg_coarse_ksp_type preonly should have >> done the trick but seemed to be ignored. Instead I had to do it with some >> calls in the code: >> >> > Humm, this seems to work for me (I just cut and pasted this). Can you try using -options_left.
> Damn, this is a bug. I will look at this and figure out how to make > PREONLY the default and get -mg_coarse_ksp_type working. > > Mark > > > >> call PCSetup(pc, ierr) ! this is the GAMG pc >> call PCMGGETCoarseSolve(pc, ksp_coarse, ierr) >> call KSPSetType(ksp_coarse, PREONLY, ierr) >> >> Cheers >> Stephan >> > >
