[petsc-users] matrix-free snes with frozen preconditioner

[Matthew Knepley]

On Tue, Sep 26, 2017 at 8:28 AM, Praveen C <cpraveen at gmail.com> wrote:

> Dear all
>
> I am solving a nonlinear problem using matrix-free approach in snes and I
> give a preconditioner matrix via SNESSetJacobian. My preconditioner is
> based on a first order scheme which is linear and hence preconditioner
> matrix will not change. How do I tell snes not to recompute it ?
>

http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/SNES/SNESSetLagPreconditioner.html

   Matt


> Thanks
> praveen
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/>
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