[Dune] has the grid been adapted??

[Martin Nolte]

Hi Marco,

the information "might be coarsened" is binding for the grid, i.e., if 
preAdapt returns false, then adapt will not coarsen the grid. If adapt then 
says the grid has not been refined, the grid has not changed.

However, it is perfectly ok for the grid to always return true on preAdapt and 
adapt, as this will not have an impact on the correctness of the solution. 
This would, of course, degrade performance.

Best,

Martin

On 06/07/2013 03:45 PM, Marco Cisternino wrote:
> Good morning duners,
> I wonder if there is a way to understand if the grid has been adapted.
> I mean, preAdapt method tells me if the grid might be coarsened and adapt
> method tells me if the grid has been refined.
> Then, checking for adapt result I'm sure that the grid has been refined or
> not, but nothing tells me if the grid has been coarsened for sure!
> Am I wrong? How can I be sure that the grid has not changed?
> I hope there is a way.
> Thanks for your attention.
>
> Bests,
> Marco
>

-- 
Dr. Martin Nolte <nolte at mathematik.uni-freiburg.de>

Universität Freiburg                                   phone: +49-761-203-5630
Abteilung für angewandte Mathematik                    fax:   +49-761-203-5632
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