NodePartitioner< ELEMENT_DIM, SPACE_DIM > Class Template Reference

#include <NodePartitioner.hpp>

List of all members.

Static Public Member Functions
static void	DumbPartitioning (AbstractMesh< ELEMENT_DIM, SPACE_DIM > &rMesh, std::set< unsigned > &rNodesOwned)
static void	MetisLibraryPartitioning (AbstractMeshReader< ELEMENT_DIM, SPACE_DIM > &rMeshReader, std::vector< unsigned > &rNodesPermutation, std::set< unsigned > &rNodesOwned, std::vector< unsigned > &rProcessorsOffset)
static void	PetscMatrixPartitioning (AbstractMeshReader< ELEMENT_DIM, SPACE_DIM > &rMeshReader, std::vector< unsigned > &rNodesPermutation, std::set< unsigned > &rNodesOwned, std::vector< unsigned > &rProcessorsOffset)

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Detailed Description

template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
class NodePartitioner< ELEMENT_DIM, SPACE_DIM >

Static methods to allow node-wise partitioning of meshes.

Definition at line 48 of file NodePartitioner.hpp.

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Member Function Documentation

template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>

void NodePartitioner< ELEMENT_DIM, SPACE_DIM >::DumbPartitioning	(	AbstractMesh< ELEMENT_DIM, SPACE_DIM > &	rMesh,
		std::set< unsigned > &	rNodesOwned
	)		[static]

Specialised method to compute a parallel partitioning of a given mesh (called by ComputeMeshPartitioning, based on the value of mMetisPartitioning)

Parameters:

rMesh	is the original mesh (so that we can set the DistributedVectorFactory up
rNodesOwned	is an empty set to be filled with the indices of nodes owned by this process

Definition at line 65 of file NodePartitioner.cpp.

References EXCEPTION, AbstractMesh< ELEMENT_DIM, SPACE_DIM >::GetDistributedVectorFactory(), DistributedVectorFactory::GetHigh(), DistributedVectorFactory::GetLow(), AbstractMesh< ELEMENT_DIM, SPACE_DIM >::GetNumNodes(), and DistributedVectorFactory::GetProblemSize().

Referenced by DistributedTetrahedralMesh< ELEMENT_DIM, SPACE_DIM >::ComputeMeshPartitioning().

template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>

void NodePartitioner< ELEMENT_DIM, SPACE_DIM >::MetisLibraryPartitioning	(	AbstractMeshReader< ELEMENT_DIM, SPACE_DIM > &	rMeshReader,
		std::vector< unsigned > &	rNodesPermutation,
		std::set< unsigned > &	rNodesOwned,
		std::vector< unsigned > &	rProcessorsOffset
	)		[static]

Specialised method to compute a parallel partitioning of a given mesh (called by ComputeMeshPartitioning, based on the value of mMetisPartitioning

Parameters:

rMeshReader	is the reader pointing to the mesh to be read in and partitioned
rNodesPermutation	is the vector to be filled with node permutation information.
rNodesOwned	is an empty set to be filled with the indices of nodes owned by this process
rProcessorsOffset	a vector of length NumProcs to be filled with the index of the lowest indexed node owned by each process

Definition at line 87 of file NodePartitioner.cpp.

References PetscTools::AmMaster(), EXCEPTION, PetscTools::GetMyRank(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::GetNextElementData(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::GetNumElements(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::GetNumNodes(), PetscTools::GetNumProcs(), TrianglesMeshReader< ELEMENT_DIM, SPACE_DIM >::GetOrderOfElements(), PetscTools::IsParallel(), NEVER_REACHED, ElementData::NodeIndices, Timer::Reset(), and AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::Reset().

Referenced by DistributedTetrahedralMesh< ELEMENT_DIM, SPACE_DIM >::ComputeMeshPartitioning().

template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>

void NodePartitioner< ELEMENT_DIM, SPACE_DIM >::PetscMatrixPartitioning	(	AbstractMeshReader< ELEMENT_DIM, SPACE_DIM > &	rMeshReader,
		std::vector< unsigned > &	rNodesPermutation,
		std::set< unsigned > &	rNodesOwned,
		std::vector< unsigned > &	rProcessorsOffset
	)		[static]

Method to compute a parallel partitioning of a given mesh.

Parameters:

rMeshReader	is the reader pointing to the mesh to be read in and partitioned
rNodesPermutation	is the vector to be filled with node permutation information.
rNodesOwned	is an empty set to be filled with the indices of nodes owned by this process
rProcessorsOffset	a vector of length NumProcs to be filled with the index of the lowest indexed node owned by each process

Todo:

(#1930) Should this be stronger?

Todo:

#1216 change the number 54 below (row nonzero allocation) to be nonmagic

Todo:

: This assembly is likely to generate many communications. Try to interleave other operations by executing them between Begin() and End().

It seems to be free-ing xadj and adjncy as a side effect

Definition at line 211 of file NodePartitioner.cpp.

References PetscTools::AmMaster(), PetscTools::AmTopMost(), PetscTools::Barrier(), PetscTools::Destroy(), PetscMatTools::Finalise(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::GetElementData(), PetscTools::GetMyRank(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::GetNextElementData(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::GetNumElements(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::GetNumNodes(), PetscTools::GetNumProcs(), PetscTools::HasParMetis(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::IsFileFormatBinary(), PetscTools::IsParallel(), ElementData::NodeIndices, PETSC_DESTROY_PARAM, Timer::PrintAndReset(), AbstractMeshReader< ELEMENT_DIM, SPACE_DIM >::Reset(), Timer::Reset(), and PetscTools::SetupMat().

Referenced by DistributedTetrahedralMesh< ELEMENT_DIM, SPACE_DIM >::ComputeMeshPartitioning().

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The documentation for this class was generated from the following files:

• mesh/src/common/NodePartitioner.hpp
• mesh/src/common/NodePartitioner.cpp