On Jul 16, 2011, at 4:10 PM, Jed Brown wrote:
> On Sat, Jul 16, 2011 at 16:06, Barry Smith <bsmith at mcs.anl.gov> wrote:
> Note that our GMRES is implemented only with left preconditioning and
> preconditioned residual norm but you can use the FGMRES which is implemented
> only for right preconditioning and the true residual norm for testing.
>
> Right preconditioning also works with normal GMRES, run with -ksp_norm_type
> unpreconditioned -ksp_pc_side right (in petsc-dev, -ksp_right_pc in
> petsc-3.1).
Oh yes. I keep forgetting this.
Barry
