[petsc-users] Database key for KSP_Solve

[Matthew Knepley]

On Fri, Jun 15, 2012 at 3:08 AM, Xuefeng Li <li at loyno.edu> wrote:

> Hi, all.
>
> I am using a multilevel DMMG in my petsc 3.1-p8
> program. The program calls SNES_KSPSolve(), and
> in turn calls KSP_Solve(). The number of times
> KSP_Solve() is called seems to be indefinite
> (10's of thousands of times).
>

The default number of iterates is 10K.


> Are there any database keys to control the number of
> times KSP_Solve() is called? Where is the loop that
> calls KSP_Solve?  The key -ksp_max_it does not seem
> to affect it.
>

Then this option did not reach the solver. You may have set a prefix.

Run with -snes_max_it 1 -ksp_max_it 1 -snes_view to see what you are
actually doing.

   Matt


> Regards,
>
> --Xuefeng Li, (504)865-3340(phone)
>  Like floating clouds, the heart rests easy
>  Like flowing water, the spirit stays free
>       http://www.loyno.edu/~li/home
>  New Orleans, Louisiana (504)865-2051(fax)
>
>


-- 
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
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