Exemple #1
0
    def exterior_facets(self):
        if self._plex.getStratumSize("exterior_facets", 1) > 0:
            # Compute the facet_numbering

            # Order exterior facets by OP2 entity class
            exterior_facets, exterior_facet_classes = \
                dmplex.get_facets_by_class(self._plex, "exterior_facets")

            # Derive attached boundary IDs
            if self._plex.hasLabel("boundary_ids"):
                boundary_ids = np.zeros(exterior_facets.size, dtype=np.int32)
                for i, facet in enumerate(exterior_facets):
                    boundary_ids[i] = self._plex.getLabelValue("boundary_ids", facet)

                unique_ids = np.sort(self._plex.getLabelIdIS("boundary_ids").indices)
            else:
                boundary_ids = None
                unique_ids = None

            exterior_local_facet_number, exterior_facet_cell = \
                dmplex.facet_numbering(self._plex, "exterior",
                                       exterior_facets,
                                       self._cell_numbering,
                                       self.cell_closure)

            return _Facets(self, exterior_facet_classes, "exterior",
                           exterior_facet_cell, exterior_local_facet_number,
                           boundary_ids, unique_markers=unique_ids)
        else:
            if self._plex.hasLabel("boundary_ids"):
                unique_ids = np.sort(self._plex.getLabelIdIS("boundary_ids").indices)
            else:
                unique_ids = None
            return _Facets(self, 0, "exterior", None, None,
                           unique_markers=unique_ids)
Exemple #2
0
    def interior_facets(self):
        if self._plex.getStratumSize("interior_facets", 1) > 0:
            # Compute the facet_numbering

            # Order interior facets by OP2 entity class
            interior_facets, interior_facet_classes = dmplex.get_facets_by_class(self._plex, "interior_facets")

            interior_local_facet_number, interior_facet_cell = dmplex.facet_numbering(
                self._plex, "interior", interior_facets, self._cell_numbering, self.cell_closure
            )

            return _Facets(self, interior_facet_classes, "interior", interior_facet_cell, interior_local_facet_number)
        else:
            return _Facets(self, 0, "interior", None, None)
Exemple #3
0
    def interior_facets(self):
        # If there are no interior facets on this process, everything
        # just falls through nicely, so no need to special case.

        # Compute the facet_numbering
        # Order interior facets by OP2 entity class
        interior_facets, interior_facet_classes = \
            dmplex.get_facets_by_class(self._plex, "interior_facets",
                                       self._facet_ordering)

        interior_local_facet_number, interior_facet_cell = \
            dmplex.facet_numbering(self._plex, "interior",
                                   interior_facets,
                                   self._cell_numbering,
                                   self.cell_closure)

        return _Facets(self, interior_facet_classes, "interior",
                       interior_facet_cell, interior_local_facet_number)
Exemple #4
0
    def exterior_facets(self):
        # If there are no exterior facets on this process, everything
        # just falls through nicely, so no need to special case.

        # Compute the facet_numbering
        # Order exterior facets by OP2 entity class
        exterior_facets, exterior_facet_classes = \
            dmplex.get_facets_by_class(self._plex, "exterior_facets",
                                       self._facet_ordering)

        # Derive attached boundary IDs
        if self._plex.hasLabel("boundary_ids"):
            boundary_ids = np.zeros(exterior_facets.size, dtype=np.int32)
            for i, facet in enumerate(exterior_facets):
                boundary_ids[i] = self._plex.getLabelValue("boundary_ids", facet)

            # Determine union of boundary IDs.  All processes must
            # know the values of all ids, for collective reasons.
            comm = self.comm
            from mpi4py import MPI

            def merge_ids(x, y, datatype):
                return x.union(y)

            op = MPI.Op.Create(merge_ids, commute=True)

            local_ids = set(self._plex.getLabelIdIS("boundary_ids").indices)
            unique_ids = np.asarray(sorted(comm.allreduce(local_ids, op=op)),
                                    dtype=np.int32)
            op.Free()
        else:
            boundary_ids = None
            unique_ids = None

        exterior_local_facet_number, exterior_facet_cell = \
            dmplex.facet_numbering(self._plex, "exterior",
                                   exterior_facets,
                                   self._cell_numbering,
                                   self.cell_closure)

        return _Facets(self, exterior_facet_classes, "exterior",
                       exterior_facet_cell, exterior_local_facet_number,
                       boundary_ids, unique_markers=unique_ids)