VTKMeshGeneratorTools.hpp File Reference

#include <vtkPartitionedDataSet.h>
#include <vtkSmartPointer.h>
#include <vtkUnstructuredGrid.h>
#include <mpi.h>

Go to the source code of this file.

Namespaces
	geos

Functions
vtkSmartPointer< vtkUnstructuredGrid >	geos::vtk::redistribute (vtkPartitionedDataSet &localParts, MPI_Comm mpiComm)
	Redistribute a dataset partitioned on each rank according to destination. More...
std::vector< vtkBoundingBox >	geos::vtk::exchangeBoundingBoxes (vtkDataSet &dataSet, MPI_Comm mpiComm)
	All-to-all exchange of mesh partition bounding boxes between all ranks. More...

Function Documentation

exchangeBoundingBoxes()

std::vector< vtkBoundingBox > geos::vtk::exchangeBoundingBoxes	(	vtkDataSet &	dataSet,
		MPI_Comm	mpiComm
	)

All-to-all exchange of mesh partition bounding boxes between all ranks.

Parameters

dataSet	the local part of the mesh
mpiComm	the MPI communicator

Returns

a vector of bounding boxes, one per rank in mpiComm

redistribute()

vtkSmartPointer< vtkUnstructuredGrid > geos::vtk::redistribute	(	vtkPartitionedDataSet &	localParts,
		MPI_Comm	mpiComm
	)

Redistribute a dataset partitioned on each rank according to destination.

Parameters

localParts	the partitioned dataset (each part must be a vtkUnstructuredGrid)
mpiComm	the MPI communicator to distribute over

Returns

the new, redistributed grid

There must be exactly P partitions in localParts, where P is the size of comm. Partition with index i represents a piece of mesh that must be shipped off to rank i. Some partitions (usually most of them) can be empty, indicating nothing to send. The return value on each rank is a combination of mesh pieces sent to current rank.