[petsc-users] Solving Poisson equation with multigrid

[Jed Brown]

Michele Rosso <mrosso at uci.edu> writes:

> Thank you.
> I tried to run with
>
> -pc_type mg -pc_mg_levels 3

Call KSPSetDM().  Look at src/ksp/ksp/examples/tutorials/ex45.c or
src/snes/examples/tutorials/ex5.c