Dune Core Modules (2.5.0)
parmetisgridpartitioner.hh
Go to the documentation of this file.
47 typedef typename GridView::template Codim<0>::template Partition<Interior_Partition>::Iterator InteriorElementIterator;
74 idx_type ncommonnodes = 2; // number of nodes elements must have in common to be considered adjacent to each other
78 std::vector<real_type> tpwgts(ncon*nparts, 1./nparts); // load per subdomain and weight (same load on every process)
79 std::vector<real_type> ubvec(ncon, 1.05); // weight tolerance (same weight tolerance for every weight there is)
86 // Create and fill arrays "eptr", where eptr[i] is the number of vertices that belong to the i-th element, and
92 for (InteriorElementIterator eIt = gv.template begin<0, Interior_Partition>(); eIt != gv.template end<0, Interior_Partition>(); ++eIt) {
93 const size_t curNumVertices = ReferenceElements<double, dimension>::general(eIt->type()).size(dimension);
133 static std::vector<unsigned> repartition(const GridView& gv, const Dune::MPIHelper& mpihelper, real_type& itr = 1000) {
150 std::vector<real_type> tpwgts(ncon*nparts, 1./nparts); // load per subdomain and weight (same load on every process)
151 std::vector<real_type> ubvec(ncon, 1.05); // weight tolerance (same weight tolerance for every weight there is)
172 for (InteriorElementIterator eIt = gv.template begin<0, Interior_Partition>(); eIt != gv.template end<0, Interior_Partition>(); ++eIt)
176 for (IntersectionIterator iIt = gv.template ibegin(*eIt); iIt != gv.template iend(*eIt); ++iIt) {
199 // At this point, interiorPart contains a target rank for each interior element, and they are sorted
202 // b) Use the element index for the actual ordering. Since there may be different types of elements,
224#warning "You seem to be using the ParMETIS emulation layer of scotch, which does not work with this file."
static MPICommunicator getCommunicator()
get the default communicator
Definition: mpihelper.hh:181
static MPICommunicator getLocalCommunicator()
get a local communicator
Definition: mpihelper.hh:192
A few common exception classes.
Provides a globally unique index for all entities of a distributed Dune grid.
typename FieldTraits< Type >::real_type real_t
Convenient access to FieldTraits<Type>::real_type.
Definition: typetraits.hh:472
Traits::IntersectionIterator IntersectionIterator
type of the intersection iterator
Definition: gridview.hh:87
Mapper for multiple codim and multiple geometry types.
Helpers for dealing with MPI.
static const ReferenceElement< ctype, dim > & general(const GeometryType &type)
get general reference elements
Definition: referenceelements.hh:757
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