[Dune] has the grid been adapted??

[Dedner, Andreas]

Hi Marco.
I'm afraid it is as Martin says, checking the return of preAdapt and adapt isn't
guaranteed to prove 'grid convergence'. Couldn't you simply check if you are
actually marking elements or not? Although: it is possible that you mark elements for
coarsening and nothing is done because the elements couldn't be removed.
Best
Andreas


________________________________
From: dune-bounces+a.s.dedner=warwick.ac.uk at dune-project.org [dune-bounces+a.s.dedner=warwick.ac.uk at dune-project.org] on behalf of Marco Cisternino [marco.cisternino at optimad.it]
Sent: 10 June 2013 15:29
To: dune at dune-project.org
Subject: Re: [Dune] has the grid been adapted??

Hi Martin,
I'm trying to get grid convergence, then I have to know if the grid doesn't change any more in order to stop the computation.
Then, if I ask for the results of preAdapt and adapt and they're both false, this means that the grid didn't change. Right?
What do you mean with:

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.

Does, for example, ALU always return true on preAdapt and adapt??
Thanks again.

Marco

Il 08/06/2013 12:00, dune-request at dune-project.org<mailto:dune-request at dune-project.org> ha scritto:

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Today's Topics:

   1. dune problem on mac (Kirkilionis, Markus)
   2. Re: dune problem on mac (Steffen M?thing)
   3. Re: dune problem on mac (Tobias Malkmus)
   4. has the grid been adapted?? (Marco Cisternino)
   5. Re: attaching data to intersections (Oliver Sander)
   6. Re: has the grid been adapted?? (Martin Nolte)




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Marco Cisternino, Ph.D.
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