Hi Georg,
I think that there is no test case for the multidomain models. You can
have a look at test_box1pwithamg and the corresponding problem file
1ptestproblem.hh in test/implicit/1p (or
test/porousmediumflow/1p/implicit in the current master) to see how to
enable another solver, this time the AMGBackend:
#include <dumux/linear/amgbackend.hh>
SET_TYPE_PROP(OnePTestBoxProblemWithAMG, LinearSolver,
Dumux::AMGBackend<TypeTag> );
I am unsure whether this works in combination with a multidomain
setting, please try.
Kind regards
Bernd
On 02/23/2016 03:51 PM, [email protected] wrote:
Hi Christoph,
We ran our multidomain application in parallel using SuperLU as solver.
However, this lead to an increase in wall time. Since, for now, we do not solve
Stokes flow it might be possible to use an iterative solver for our fuel cell
models and speed up the simulation through parallelization. Is there a test
case using an iterative solver?
Kind regards
Georg
-----Ursprüngliche Nachricht-----
Von: Dumux [mailto:[email protected]] Im Auftrag von
Christoph Grüninger
Gesendet: Dienstag, 16. Februar 2016 16:40
An: [email protected]
Betreff: Re: [DuMuX] Multidomain in parallel
Hi Georg,
sure, you can use MultiDomain / MultiDomaingrid in parallel. The best
documentation about parallel computing should be the grid howto. You can
download it from the website, see
http://www.dune-project.org/doc/grid-howto/grid-howto.pdf
or build it yourself from the dune-grid-howto module.
In DuMuX there should be tests that run in parallel, too. But not coupled ones.
In DuMuX we introduced the MultiDomain stuff for coupling Stokes with Darcy.
Stokes leads to a saddle-point problem that could not be efficiently solved by
an iterative solver. All direct solvers are not parallel. That's why we never
tried to run the whole problem in parallel. If your assembly is slow, it still
might be worth a try.
Bye
Christoph
--
The method has been developed for use on a high-speed electronic computer and
would be impractical for hand-solution purposes.
[Harlow & Welch 1965]
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