[dune-pdelab] Dune::PDELab::ISTLBackend_NOVLP_CG_AMG_SSOR with ALUGrid

[Jö Fahlke]

Am Fri, 27. Jan 2012, 18:08:37 +0100 schrieb Christian Engwer:
> > that's very interesting. So far I've only been using the overlapping
> > solvers on YaspGrid, but I need to move to ALUGrid for my spherical
> > grid, and as far as I know I can only use the non-overlapping
> > solvers there as ALUGrid does not have any overlap.
> 
> in principal yes, but it depends a littel bit on your
> discretization. If you are using finite-volume for example, you only
> have couplings to the face-neighbors and these are all available,
> although alugrid doesn't provide a full overlap. In this case you
> should be able to use an overlapping solver.
> 
> > I'll try to set up a simple test case that reproduces the problem.
> > I'm using version 2.1 of Dune, so that might explain why it's not
> > working for me at the moment.

A related thread "Features of Ghost-Elements" can be found here:
<http://lists.dune-project.org/pipermail/dune/2011-June/thread.html#8886>.
That can probably anwer some of the questions that you might have, as long as
only ALUGrid is concerned.

Bye,
Jö.

-- 
Jorrit (Jö) Fahlke, Interdisciplinary Center for Scientific Computing,
Heidelberg University, Im Neuenheimer Feld 368, D-69120 Heidelberg
Tel: +49 6221 54 8890 Fax: +49 6221 54 8884

It is my conviction that killing under the cloak of war is nothing but
an act of murder.
-- Albert Einstein
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