if there is a way
to detect why this happened or how to stop it.
You can try -ksp_type gmres and see how that goes since it can handle an
indefinite preconditioner.
> On Mar 18, 2022, at 11:53 AM, Fabio Durastante
wrote:
>
> For the default case:
>
&g
that should be definite (and symmetric).
Fabio
Il 18/03/22 16:47, Barry Smith ha scritto:
Run with -ksp_converged_reason to have it print why it has stopped the
iteration.
On Mar 18, 2022, at 11:44 AM, Fabio Durastante
wrote:
Hi everybody,
I'm trying to run the rotated anisotropy example
KSP Residual norm 2.320857464659e-08
13 KSP Residual norm 4.563772507631e-09
14 KSP Residual norm 8.896675476997e-10
that is very strange because the case with epsilon 1 should be easier.
Any help with this would be great.
Thank you very much,
Fabio Durastante
0 KSP Residual norm
