[petsc-dev] GMRES and eigen estimates

[Jed Brown]

Min should also be 1, no?
On Mar 30, 2012 9:26 AM, "Mark F. Adams" <mark.adams at columbia.edu> wrote:

> I've had problems with GMRES and eigen estimates in the past but I now
> have a smoking gun.  It seems that if you give GMRES an operator
> preconditioned with LU (ie, the preconditioned operator is the identity)
> GMRES gives me a highest eigen estimate of ~10 (way off).  With CG I get a
> prefect max=1.0, min=0.0.
>
> Any thoughts?
>
> Mark
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