[petsc-users] Multiple solves with PCMG fail

[Mark Adams]

On Tue, Nov 4, 2014 at 2:55 AM, Filippo Leonardi <
filippo.leonardi at sam.math.ethz.ch> wrote:

> Sorry for the late update.
>
> I tested the code with the branch:
> ksp-zero-eig
>
>
Did you make PETSc after the checking out the branch?  Please send us the
error message and run in debug mode if possible.


> But the problem seems to still be there, also tried:
> -ksp_chebyshev_estimate_eigenvalues_random
> but does not change.
>
> Just tell me what test you need and I'll try to do them.
>
> Best,
> Filippo
>
> On Wednesday 29 October 2014 10.30:14 Mark Adams wrote:
> > > Yeah, that should work; an alternative is to defer the estimate until
> > > the next solve.
> >
> > Sounds better.  As I said one of my users has a zero RHS on the first
> solve.
>
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