[petsc-users] Change SNES/TS setting from inside context

[Matthew Knepley]

On Thu, Oct 27, 2011 at 12:44 PM, behzad baghapour <
behzad.baghapour at gmail.com> wrote:

> Dear All,
>
> 1- Is there any way to change the setting of SNES within its iteration
> process? ( for example, changing PC type or fill level due to some reasons )
>
>

Yes,

  SNESGetKSP()
  KSPGetPC()
  PC***()

I would probably put this code in a SNES monitor.

   Matt

2- page 120 of PETSc manual (TS): "For location-dependent
> pseudo-timestepping, the interface function has not yet been created."
> Is there any way to control time-step locally? (This is due to variable
> time updating usually needed in PDE solution)
>
> Thanks a lot,
> B. B.
>
> --
> ==================================
> Behzad Baghapour
> Ph.D. Candidate, Mechecanical Engineering
> University of Tehran, Tehran, Iran
> https://sites.google.com/site/behzadbaghapour
> Fax: 0098-21-88020741
> ==================================
>
>


-- 
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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