Partition Class Reference

To partition a finite element mesh into balanced submeshes. More...

Public Member Functions
	Partition ()
	Default constructor.
	Partition (Mesh &mesh, size_t n)
	Constructor to partition a mesh into submeshes. More...
	Partition (Mesh &mesh, int n, vector< int > &epart)
	Constructor using already created submeshes. More...
	~Partition ()
	Destructor.
size_t	getNbSubMeshes () const
	Return number of submeshes.
size_t	getNbNodes (size_t i) const
	Return number of nodes in given submesh.
size_t	getNbElements (size_t i) const
	Return number of elements in given submesh.
Mesh *	getMesh ()
	Return the global Mesh instance.
Mesh *	getMesh (size_t i)
	Return the submesh of label i
size_t	getNodeLabelInSubMesh (size_t sm, size_t label) const
	Return node label in subdomain by giving its label in initial mesh. More...
size_t	getElementLabelInSubMesh (size_t sm, size_t label) const
	Return element label in subdomain by giving its label in initial mesh.
size_t	getNodeLabelInMesh (size_t sm, size_t label) const
	Return node label in initial mesh by giving its label in submesh. More...
size_t	getElementLabelInMesh (size_t sm, size_t label) const
	Return element label in initial mesh by giving its label in submesh.
size_t	getNbInterfaceSides (size_t sm) const
	Return Number of interface sides for a given sub-mesh.
size_t	getSubMesh (size_t sm, size_t i) const
	Return index of submesh that contains the i-th side label in sub-mesh sm More...
Mesh &	getSubMesh (size_t i) const
	Return reference to submesh. More...
size_t	getFirstSideLabel (size_t sm, size_t i) const
	Return i-th side label in a given submesh. More...
size_t	getSecondSideLabel (size_t sm, size_t i) const
	Return side label in the neighbouring submesh corresponding to i-th side label in sub-mesh sm More...
int	getNbConnectInSubMesh (int n, int s) const
	Get number of connected nodes in a submesh. More...
int	getNbConnectOutSubMesh (int n, int s) const
	Get number of connected nodes out of a submesh. More...
void	put (size_t n, string file) const
	Save a submesh in file. More...
void	set (Mesh &mesh, size_t n)
	Set Mesh instance.

Friends
ostream &	operator<< (ostream &s, const Partition &p)
	Output class information.

Detailed Description

To partition a finite element mesh into balanced submeshes.

Class Partition enables partitioning a given mesh into a given number of submeshes with a minimal connectivity. Partition uses the well known metis library that is included in the OFELI library. A more detailed description of metis can be found in the web site:
http://www.csit.fsu.edu/~burkardt/c_src/metis/metis.html

Author

Rachid Touzani

Copyright

GNU Lesser Public License

Constructor & Destructor Documentation

Partition	(	Mesh &	mesh,
		size_t	n
	)

Constructor to partition a mesh into submeshes.

Parameters

[in]	mesh	Mesh instance
[in]	n	Number of submeshes

Partition	(	Mesh &	mesh,
		int	n,
		vector< int > &	epart
	)

Constructor using already created submeshes.

Parameters

[in]	mesh	Mesh instance
[in]	n	Number of submeshes
[in]	epart	Vector containing for each element its submesh label (Running from 0 to n-1

Member Function Documentation

size_t getNodeLabelInSubMesh	(	size_t	sm,
		size_t	label
	)		const

Return node label in subdomain by giving its label in initial mesh.

Parameters

[in]	sm	Label of submesh
[in]	label	Label of node in initial mesh

size_t getNodeLabelInMesh	(	size_t	sm,
		size_t	label
	)		const

Return node label in initial mesh by giving its label in submesh.

Parameters

[in]	sm	Label of submesh
[in]	label	Node label

size_t getSubMesh	(	size_t	sm,
		size_t	i
	)		const

Return index of submesh that contains the i-th side label in sub-mesh sm

Parameters

[in]	sm	Submesh index
[in]	i	Side label

Returns

Index of submesh

Mesh& getSubMesh

(

size_t

i

)

const

Return reference to submesh.

Parameters

[in]

i

Submesh index

Returns

Reference to corresponding Mesh instance

size_t getFirstSideLabel	(	size_t	sm,
		size_t	i
	)		const

Return i-th side label in a given submesh.

Parameters

[in]	sm	Index of submesh
[in]	i	Label of side

size_t getSecondSideLabel	(	size_t	sm,
		size_t	i
	)		const

Return side label in the neighbouring submesh corresponding to i-th side label in sub-mesh sm

Parameters

[in]	sm	Label of submesh
[in]	i	Side label

int getNbConnectInSubMesh	(	int	n,
		int	s
	)		const

Get number of connected nodes in a submesh.

Parameters

[in]	n	Label of node for which connections are counted
[in]	s	Label of submesh (starting from 0)

int getNbConnectOutSubMesh	(	int	n,
		int	s
	)		const

Get number of connected nodes out of a submesh.

Parameters

[in]	n	Label of node for which connections are counted
[in]	s	Label of submesh (starting from 0)

void put	(	size_t	n,
		string	file
	)		const

Save a submesh in file.

Parameters

[in]	n	Label of submesh
[in]	file	Name of file in which submesh is saved