[petsc-users] GMRES pc right fails while pc left succeeds

[Klaij, Christiaan]

> > Yes, the diagonal of the velocity block is used to form the Schur
> > complement approximation explicitly. I'm solving the velocity
> > subsystem and the Schur complement subsystem to a relative tolerance
> > of 0.01. Decreasing this tolerance does not change the behaviour of
> > GMRES with right preconditioning.
> >
>
> Just to be sure, are both of these approximations in the preconditioner or
> have you absorbed part into the "operator"?

Both approximations are in the preconditioner.


dr. ir. Christiaan Klaij
CFD Researcher
Research & Development
E mailto:C.Klaij at marin.nl
T +31 317 49 33 44

MARIN
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