Dear all,
in the course of my master thesis at the TU Dortmund I came across Deal.II
while searching for a boundary element method. Is it possible to change the
BEM explained in Step-34 to use it parallelised?
I have already tried to make some changes using Step-40. This includes
replacing the sparse matrix to a dense matrix using the PETSc library
header files. This resulted in the following error message:
An error occurred in line <8242> of file
</home/maho27/dealii-candi/tmp/unpack/deal.II-v9.4.0/source/grid/grid_generator.cc>
in function
std::map<typename MeshType<(dim - 1), spacedim>::cell_iterator,
typename MeshType<dim, spacedim>::face_iterator>
dealii::GridGenerator::extract_boundary_mesh(const MeshType<dim,
spacedim>&, MeshType<(dim - 1), spacedim>&, const std::set<unsigned int>&)
[with MeshType = dealii::parallel::distributed::Triangulation; int dim = 3;
int spacedim = 3; typename MeshType<dim, spacedim>::face_iterator =
dealii::TriaIterator<dealii::TriaAccessor<2, 3, 3> >; typename
MeshType<(dim - 1), spacedim>::cell_iterator =
dealii::TriaIterator<dealii::CellAccessor<2, 3> >]
The violated condition was:
(dynamic_cast< const parallel::distributed::Triangulation<dim,
spacedim> *>( &volume_mesh.get_triangulation()) == nullptr)
Additional information:
You are trying to use functionality in deal.II that is currently not
implemented. In many cases, this indicates that there simply didn't
appear much of a need for it, or that the author of the original code
did not have the time to implement a particular case. If you hit this
exception, it is therefore worth the time to look into the code to
find out whether you may be able to implement the missing
functionality. If you do, please consider providing a patch to the
deal.II development sources (see the deal.II website on how to
contribute).
I am asuming that the problem results because of the use of the manifold,
which is not embedded with parallelisation.
Best regards,
Max
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