A parallel extension of the NCMesh class. More...

#include <pncmesh.hpp>

Inheritance diagram for mfem::ParNCMesh:

Collaboration diagram for mfem::ParNCMesh:

Classes
class	ElementSet

class	ElementValueMessage

class	NeighborDerefinementMessage

class	NeighborElementRankMessage

class	NeighborRefinementMessage

class	RebalanceDofMessage

class	RebalanceMessage

Public Member Functions
	ParNCMesh (MPI_Comm comm, const NCMesh &ncmesh)

virtual	~ParNCMesh ()

virtual void	Refine (const Array< Refinement > &refinements)

virtual void	LimitNCLevel (int max_nc_level)
	Parallel version of NCMesh::LimitNCLevel. More...

virtual void	CheckDerefinementNCLevel (const Table &deref_table, Array< int > &level_ok, int max_nc_level)

virtual void	Derefine (const Array< int > &derefs)

void	Rebalance ()

const NCList &	GetSharedVertices ()

const NCList &	GetSharedEdges ()

const NCList &	GetSharedFaces ()

const NCList &	GetSharedList (int type)
	Helper to get shared vertices/edges/faces ('type' == 0/1/2 resp.). More...

int	GetFaceOrientation (int index) const
	Return (shared) face orientation relative to the owner element. More...

int	GetOwner (int type, int index) const
	Return vertex/edge/face ('type' == 0/1/2, resp.) owner. More...

const int *	GetGroup (int type, int index, int &size) const

bool	RankInGroup (int type, int index, int rank) const

bool	IsGhost (int type, int index) const
	Returns true if the specified vertex/edge/face is a ghost. More...

int	ElementRank (int index) const

void	GetFaceNeighbors (ParMesh &pmesh)

void	SendRebalanceDofs (int old_ndofs, const Table &old_element_dofs, long old_global_offset, FiniteElementSpace *space)
	Use the communication pattern from last Rebalance() to send element DOFs. More...

void	RecvRebalanceDofs (Array< int > &elements, Array< long > &dofs)
	Receive element DOFs sent by SendRebalanceDofs(). More...

const Array< int > &	GetRebalanceOldIndex () const

const Array< int > &	GetDerefineOldRanks () const

template<typename Type >
void	SynchronizeDerefinementData (Array< Type > &elem_data, const Table &deref_table)

virtual void	GetBoundaryClosure (const Array< int > &bdr_attr_is_ess, Array< int > &bdr_vertices, Array< int > &bdr_edges)

void	GetDebugMesh (Mesh &debug_mesh) const

Public Member Functions inherited from mfem::NCMesh
	NCMesh (const Mesh mesh, std::istream vertex_parents=NULL)

	NCMesh (const NCMesh &other)
	Deep copy of 'other'. More...

virtual	~NCMesh ()

int	Dimension () const

int	SpaceDimension () const

const Table &	GetDerefinementTable ()

const NCList &	GetFaceList ()
	Return the current list of conforming and nonconforming faces. More...

const NCList &	GetEdgeList ()
	Return the current list of conforming and nonconforming edges. More...

void	MarkCoarseLevel ()

const CoarseFineTransformations &	GetRefinementTransforms ()

const CoarseFineTransformations &	GetDerefinementTransforms ()

void	ClearTransforms ()
	Free all internal data created by the above three functions. More...

int	GetEdgeMaster (int v1, int v2) const

int	GetElementGeometry () const
	Return the type of elements in the mesh. More...

int	GetElementDepth (int i) const
	Return the distance of leaf 'i' from the root. More...

void	PrintVertexParents (std::ostream &out) const
	I/O: Print the "vertex_parents" section of the mesh file (ver. >= 1.1). More...

void	PrintCoarseElements (std::ostream &out) const
	I/O: Print the "coarse_elements" section of the mesh file (ver. >= 1.1). More...

void	LoadVertexParents (std::istream &input)

void	LoadCoarseElements (std::istream &input)
	I/O: Load the element refinement hierarchy from a mesh file. More...

void	SetVertexPositions (const Array< mfem::Vertex > &vertices)
	I/O: Set positions of all vertices (used by mesh loader). More...

long	MemoryUsage () const
	Return total number of bytes allocated. More...

void	PrintMemoryDetail () const

void	DebugNeighbors (Array< char > &elem_set)

void	DebugLeafOrder () const
	Print the space-filling curve formed by the sequence of leaf elements. More...

Protected Member Functions
virtual void	Update ()

int	Partition (long index, long total_elements) const
	Return the processor number for a global element number. More...

int	InitialPartition (int index) const
	Helper to get the partition when the serial mesh is being split initially. More...

long	PartitionFirstIndex (int rank, long total_elements) const
	Return the global index of the first element owned by processor 'rank'. More...

virtual void	UpdateVertices ()
	update Vertex::index and vertex_nodeId More...

virtual void	AssignLeafIndices ()

virtual bool	IsGhost (const Element *elem) const

virtual int	GetNumGhosts () const

virtual void	OnMeshUpdated (Mesh *mesh)

virtual void	BuildEdgeList ()

virtual void	BuildFaceList ()

virtual void	ElementSharesEdge (Element elem, Edge edge)

virtual void	ElementSharesFace (Element elem, Face face)

void	BuildSharedVertices ()

void	CalcFaceOrientations ()

void	UpdateLayers ()

void	AddMasterSlaveRanks (int nitems, const NCList &list)

void	MakeShared (const Table &groups, const NCList &list, NCList &shared)

void	EncodeMeshIds (std::ostream &os, Array< MeshId > ids[])
	Write to 'os' a processor-independent encoding of vertex/edge/face IDs. More...

void	DecodeMeshIds (std::istream &is, Array< MeshId > ids[])
	Read from 'is' a processor-independent encoding of vertex/edge/face IDs. More...

bool	CheckElementType (Element *elem, int type)

void	ElementNeighborProcessors (Element *elem, Array< int > &ranks)

void	NeighborProcessors (Array< int > &neighbors)

void	Prune ()

bool	PruneTree (Element *elem)
	Internal. Recursive part of Prune(). More...

void	RedistributeElements (Array< int > &new_ranks, int target_elements, bool record_comm)

void	ClearAuxPM ()

Protected Member Functions inherited from mfem::NCMesh
void	GetMeshComponents (Array< mfem::Vertex > &vertices, Array< mfem::Element * > &elements, Array< mfem::Element * > &boundary) const
	Return the basic Mesh arrays for the current finest level. More...

Element *	CopyHierarchy (Element *elem)

void	DeleteHierarchy (Element *elem)

void	CollectLeafElements (Element *elem, int state)

void	UpdateLeafElements ()

void	RefineElement (Element *elem, char ref_type)

void	DerefineElement (Element *elem)

Element *	NewHexahedron (Node n0, Node n1, Node n2, Node n3, Node n4, Node n5, Node n6, Node n7, int attr, int fattr0, int fattr1, int fattr2, int fattr3, int fattr4, int fattr5)

Element *	NewQuadrilateral (Node n0, Node n1, Node n2, Node n3, int attr, int eattr0, int eattr1, int eattr2, int eattr3)

Element *	NewTriangle (Node n0, Node n1, Node *n2, int attr, int eattr0, int eattr1, int eattr2)

Vertex *	NewVertex (Node v1, Node v2)

mfem::Element *	NewMeshElement (int geom) const

Node *	GetMidEdgeVertex (Node v1, Node v2)

Node *	GetMidEdgeVertexSimple (Node v1, Node v2)

Node *	GetMidFaceVertex (Node e1, Node e2, Node e3, Node e4)

int	FaceSplitType (Node v1, Node v2, Node v3, Node v4, Node *mid[4]=NULL) const

void	ForceRefinement (Node v1, Node v2, Node v3, Node v4)

void	CheckAnisoFace (Node v1, Node v2, Node v3, Node v4, Node mid12, Node mid34, int level=0)

void	CheckIsoFace (Node v1, Node v2, Node v3, Node v4, Node e1, Node e2, Node e3, Node e4, Node *midf)

void	RefElementNodes (Element *elem)

void	UnrefElementNodes (Element *elem)

Face *	GetFace (Element *elem, int face_no)

void	RegisterFaces (Element elem, int fattr=NULL)

Node *	PeekAltParents (Node v1, Node v2)

bool	NodeSetX1 (Node node, Node *n)

bool	NodeSetX2 (Node node, Node *n)

bool	NodeSetY1 (Node node, Node *n)

bool	NodeSetY2 (Node node, Node *n)

bool	NodeSetZ1 (Node node, Node *n)

bool	NodeSetZ2 (Node node, Node *n)

void	CollectDerefinements (Element *elem, Array< Connection > &list)

int	ReorderFacePointMat (Node v0, Node v1, Node v2, Node v3, Element *elem, DenseMatrix &mat) const

void	TraverseFace (Node v0, Node v1, Node v2, Node v3, const PointMatrix &pm, int level)

void	TraverseEdge (Node v0, Node v1, double t0, double t1, int flags, int level)

void	FindSetNeighbors (const Array< char > &elem_set, Array< Element * > neighbors, Array< char > neighbor_set=NULL)

void	FindNeighbors (const Element elem, Array< Element > &neighbors, const Array< Element * > *search_set=NULL)

void	NeighborExpand (const Array< Element * > &elements, Array< Element * > &expanded, const Array< Element * > *search_set=NULL)

void	CollectEdgeVertices (Node v0, Node v1, Array< int > &indices)

void	CollectFaceVertices (Node v0, Node v1, Node v2, Node v3, Array< int > &indices)

void	BuildElementToVertexTable ()

void	UpdateElementToVertexTable ()

void	GetPointMatrix (int geom, const char *ref_path, DenseMatrix &matrix)

void	TraverseRefinements (Element *elem, int coarse_index, std::string &ref_path, RefPathMap &map)

void	InitDerefTransforms ()

void	SetDerefMatrixCodes (Element parent, Array< Element > &coarse)

Node *	GetEdgeMaster (Node *node) const

int	EdgeSplitLevel (Node v1, Node v2) const

void	FaceSplitLevel (Node v1, Node v2, Node v3, Node v4, int &h_level, int &v_level) const

void	CountSplits (Element *elem, int splits[3]) const

void	GetLimitRefinements (Array< Refinement > &refinements, int max_level)

int	CountElements (Element *elem) const

int	PrintElements (std::ostream &out, Element *elem, int &coarse_id) const

void	CountObjects (int &nelem, int &nvert, int &nedges) const

Static Protected Member Functions
static int	get_face_orientation (Face face, Element e1, Element *e2, int local[2]=NULL)

static bool	compare_ranks (const Element a, const Element b)

static bool	compare_ranks_indices (const Element a, const Element b)

Static Protected Member Functions inherited from mfem::NCMesh
static int	find_node (Element elem, Node node)

static int	find_node (Element *elem, int node_id)

static int	find_element_edge (Element *elem, int v0, int v1)

static int	find_hex_face (int a, int b, int c)

static const PointMatrix &	GetGeomIdentity (int geom)

static void	find_face_nodes (const Face face, Node node[4])

Protected Attributes
MPI_Comm	MyComm

int	NRanks

int	MyRank

int	NVertices

int	NGhostVertices

int	NEdges

int	NGhostEdges

int	NFaces

int	NGhostFaces

int	NElements

int	NGhostElements

NCList	shared_vertices

NCList	shared_edges

NCList	shared_faces

Array< int >	vertex_owner

Array< int >	edge_owner

Array< int >	face_owner

Table	vertex_group

Table	edge_group

Table	face_group

Array< char >	face_orient

Array< char >	element_type

Array< Element * >	ghost_layer
	list of elements whose 'element_type' == 2. More...

Array< Element * >	boundary_layer
	list of type 3 elements More...

Array< Connection >	index_rank

Array< Element * >	tmp_neighbors

RebalanceDofMessage::Map	send_rebalance_dofs

RebalanceDofMessage::Map	recv_rebalance_dofs

Array< int >	old_index_or_rank

Array< DenseMatrix * >	aux_pm_store
	Stores modified point matrices created by GetFaceNeighbors. More...

Protected Attributes inherited from mfem::NCMesh
int	Dim

int	spaceDim
	dimensions of the elements and the vertex coordinates More...

bool	Iso
	true if the mesh only contains isotropic refinements More...

Array< Element * >	root_elements

HashTable< Node >	nodes

HashTable< Face >	faces

Array< Element * >	leaf_elements

Array< int >	vertex_nodeId

NCList	face_list
	lazy-initialized list of faces, see GetFaceList More...

NCList	edge_list
	lazy-initialized list of edges, see GetEdgeList More...

Array< Face * >	boundary_faces
	subset of all faces, set by BuildFaceList More...

Array< Node * >	boundary_edges
	subset of all edges, set by BuildEdgeList More...

Table	element_vertex
	leaf-element to vertex table, see FindSetNeighbors More...

int	num_vertices
	width of the table More...

Array< ElemRefType >	ref_stack
	stack of scheduled refinements (temporary) More...

Table	derefinements
	possible derefinements, see GetDerefinementTable More...

CoarseFineTransformations	transforms
	storage for data returned by Get[De]RefinementTransforms() More...

Array< Element * >	coarse_elements
	state of leaf_elements before Refine(), set by MarkCoarseLevel() More...

Friends
class	ParMesh

class	NeighborDofMessage

Additional Inherited Members
Static Public Attributes inherited from mfem::NCMesh
static GeomInfo	GI [Geometry::NumGeom]

Protected Types inherited from mfem::NCMesh
typedef std::map< std::string, int >	RefPathMap

Static Protected Attributes inherited from mfem::NCMesh
static PointMatrix	pm_tri_identity

static PointMatrix	pm_quad_identity

static PointMatrix	pm_hex_identity

Detailed Description

A parallel extension of the NCMesh class.

The basic idea (and assumption) is that all processors share the coarsest layer ('root_elements'). This has the advantage that refinements can easily be exchanged between processors when rebalancing since individual elements can be uniquely identified by the index of the root element and a path in the refinement tree.

Each leaf element is owned by one of the processors (NCMesh::Element::rank). The underlying NCMesh stores not only elements for the current ('MyRank') processor, but also a minimal layer of adjacent "ghost" elements owned by other processors. The ghost layer is synchronized after refinement.

The ghost layer contains all vertex-, edge- and face-neighbors of the current processor's region. It is used to determine constraining relations and ownership of DOFs on the processor boundary. Ghost elements are never seen by the rest of MFEM as they are skipped when a Mesh is created from the NCMesh.

The processor that owns a vertex, edge or a face (and in turn its DOFs) is currently defined to be the one with the lowest rank in the group of processors that share the entity.

Vertices, edges and faces that are not shared by this ('MyRank') processor are ghosts, and are numbered after all real vertices/edges/faces, i.e., they have indices greater than NVertices, NEdges, NFaces, respectively.

A shared vertex/edge/face is identified in an interprocessor message by a pair of numbers. The first number specifies an element in an ElementSet (typically sent at the beginning of the message) that contains the v/e/f. The second number is the local index of the v/e/f in that element.

Definition at line 65 of file pncmesh.hpp.

Constructor & Destructor Documentation

mfem::ParNCMesh::ParNCMesh	(	MPI_Comm	comm,
		const NCMesh &	ncmesh
	)

Definition at line 27 of file pncmesh.cpp.

mfem::ParNCMesh::~ParNCMesh ( )

virtual

Definition at line 49 of file pncmesh.cpp.

Member Function Documentation

void mfem::ParNCMesh::AddMasterSlaveRanks	(	int	nitems,
		const NCList &	list
	)

protected

Definition at line 271 of file pncmesh.cpp.

void mfem::ParNCMesh::AssignLeafIndices ( )

protectedvirtual

Reimplemented from mfem::NCMesh.

Definition at line 67 of file pncmesh.cpp.

void mfem::ParNCMesh::BuildEdgeList ( )

protectedvirtual

Reimplemented from mfem::NCMesh.

Definition at line 214 of file pncmesh.cpp.

void mfem::ParNCMesh::BuildFaceList ( )

protectedvirtual

Reimplemented from mfem::NCMesh.

Definition at line 238 of file pncmesh.cpp.

void mfem::ParNCMesh::BuildSharedVertices ( )

protected

Definition at line 366 of file pncmesh.cpp.

void mfem::ParNCMesh::CalcFaceOrientations ( )

protected

Definition at line 439 of file pncmesh.cpp.

void mfem::ParNCMesh::CheckDerefinementNCLevel	(	const Table &	deref_table,
		Array< int > &	level_ok,
		int	max_nc_level
	)

virtual

Parallel version of NCMesh::CheckDerefinementNCLevel.

Reimplemented from mfem::NCMesh.

Definition at line 1253 of file pncmesh.cpp.

bool mfem::ParNCMesh::CheckElementType	(	Element *	elem,
		int	type
	)

protected

Definition at line 526 of file pncmesh.cpp.

void mfem::ParNCMesh::ClearAuxPM ( )

protected

Definition at line 829 of file pncmesh.cpp.

bool mfem::ParNCMesh::compare_ranks	(	const Element *	a,
		const Element *	b
	)

staticprotected

Definition at line 1356 of file pncmesh.cpp.

bool mfem::ParNCMesh::compare_ranks_indices	(	const Element *	a,
		const Element *	b
	)

staticprotected

Definition at line 588 of file pncmesh.cpp.

void mfem::ParNCMesh::DecodeMeshIds	(	std::istream &	is,
		Array< MeshId >	ids[]
	)

protected

Read from 'is' a processor-independent encoding of vertex/edge/face IDs.

Definition at line 1826 of file pncmesh.cpp.

void mfem::ParNCMesh::Derefine ( const Array< int > & derefs )

virtual

Parallel reimplementation of NCMesh::Derefine, keeps ghost layers in sync. The interface is identical.

Reimplemented from mfem::NCMesh.

Definition at line 1001 of file pncmesh.cpp.

void mfem::ParNCMesh::ElementNeighborProcessors	(	Element *	elem,
		Array< int > &	ranks
	)

protected

Return a list of processors that own elements in the immediate neighborhood of 'elem' (i.e., vertex, edge and face neighbors), and are not 'MyRank'.

Definition at line 543 of file pncmesh.cpp.

int mfem::ParNCMesh::ElementRank ( int index ) const

inline

Returns owner processor for element 'index'. This is normally MyRank but for index >= NElements (i.e., for ghosts) it may be something else.

Definition at line 189 of file pncmesh.hpp.

void mfem::ParNCMesh::ElementSharesEdge	(	Element *	elem,
		Edge *	edge
	)

protectedvirtual

Reimplemented from mfem::NCMesh.

Definition at line 192 of file pncmesh.cpp.

void mfem::ParNCMesh::ElementSharesFace	(	Element *	elem,
		Face *	face
	)

protectedvirtual

Reimplemented from mfem::NCMesh.

Definition at line 204 of file pncmesh.cpp.

void mfem::ParNCMesh::EncodeMeshIds	(	std::ostream &	os,
		Array< MeshId >	ids[]
	)

protected

Write to 'os' a processor-independent encoding of vertex/edge/face IDs.

Definition at line 1784 of file pncmesh.cpp.

int mfem::ParNCMesh::get_face_orientation	(	Face *	face,
		Element *	e1,
		Element *	e2,
		int	local[2] = `NULL`
	)

staticprotected

Definition at line 416 of file pncmesh.cpp.

void mfem::ParNCMesh::GetBoundaryClosure	(	const Array< int > &	bdr_attr_is_ess,
		Array< int > &	bdr_vertices,
		Array< int > &	bdr_edges
	)

virtual

Extension of NCMesh::GetBoundaryClosure. Filters out ghost vertices and ghost edges from 'bdr_vertices' and 'bdr_edges'.

Reimplemented from mfem::NCMesh.

Definition at line 463 of file pncmesh.cpp.

void mfem::ParNCMesh::GetDebugMesh ( Mesh & debug_mesh ) const

Extract a debugging Mesh containing all leaf elements, including ghosts. The debug mesh will have element attributes set to element rank + 1.

Definition at line 2224 of file pncmesh.cpp.

const Array<int>& mfem::ParNCMesh::GetDerefineOldRanks ( ) const

inline

Get previous (pre-Derefine) fine element ranks. This complements the CoarseFineTransformations::embeddings array in parallel.

Definition at line 215 of file pncmesh.hpp.

void mfem::ParNCMesh::GetFaceNeighbors ( ParMesh & pmesh )

Populate face neighbor members of ParMesh from the ghost layer, without communication.

Definition at line 594 of file pncmesh.cpp.

int mfem::ParNCMesh::GetFaceOrientation ( int index ) const

inline

Return (shared) face orientation relative to the owner element.

Definition at line 132 of file pncmesh.hpp.

const int* mfem::ParNCMesh::GetGroup	(	int	type,
		int	index,
		int &	size
	)		const

inline

Return a list of processors sharing a vertex/edge/face ('type' == 0/1/2, resp.) and the size of the list.

Definition at line 150 of file pncmesh.hpp.

virtual int mfem::ParNCMesh::GetNumGhosts ( ) const

inlineprotectedvirtual

Reimplemented from mfem::NCMesh.

Definition at line 291 of file pncmesh.hpp.

int mfem::ParNCMesh::GetOwner	(	int	type,
		int	index
	)		const

inline

Return vertex/edge/face ('type' == 0/1/2, resp.) owner.

Definition at line 138 of file pncmesh.hpp.

const Array<int>& mfem::ParNCMesh::GetRebalanceOldIndex ( ) const

inline

Get previous indices (pre-Rebalance) of current elements. Index of -1 indicates that an element didn't exist in the mesh before.

Definition at line 211 of file pncmesh.hpp.

const NCList& mfem::ParNCMesh::GetSharedEdges ( )

inline

Return a list of edges shared by this processor and at least one other processor. (NOTE: this is a subset of the NCMesh::edge_list; slaves are empty.)

Definition at line 106 of file pncmesh.hpp.

const NCList& mfem::ParNCMesh::GetSharedFaces ( )

inline

Return a list of faces shared by this processor and another processor. (NOTE: this is a subset of NCMesh::face_list; slaves are empty.)

Definition at line 114 of file pncmesh.hpp.

const NCList& mfem::ParNCMesh::GetSharedList ( int type )

inline

Helper to get shared vertices/edges/faces ('type' == 0/1/2 resp.).

Definition at line 121 of file pncmesh.hpp.

const NCList& mfem::ParNCMesh::GetSharedVertices ( )

inline

Return a list of vertices shared by this processor and at least one other processor. (NOTE: only NCList::conforming will be set.)

Definition at line 97 of file pncmesh.hpp.

int mfem::ParNCMesh::InitialPartition ( int index ) const

inlineprotected

Helper to get the partition when the serial mesh is being split initially.

Definition at line 278 of file pncmesh.hpp.

bool mfem::ParNCMesh::IsGhost	(	int	type,
		int	index
	)		const

inline

Returns true if the specified vertex/edge/face is a ghost.

Definition at line 177 of file pncmesh.hpp.

virtual bool mfem::ParNCMesh::IsGhost ( const Element * elem ) const

inlineprotectedvirtual

Reimplemented from mfem::NCMesh.

Definition at line 288 of file pncmesh.hpp.

void mfem::ParNCMesh::LimitNCLevel ( int max_nc_level )

virtual

Parallel version of NCMesh::LimitNCLevel.

Reimplemented from mfem::NCMesh.

Definition at line 983 of file pncmesh.cpp.

void mfem::ParNCMesh::MakeShared	(	const Table &	groups,
		const NCList &	list,
		NCList &	shared
	)

protected

Definition at line 338 of file pncmesh.cpp.

void mfem::ParNCMesh::NeighborProcessors ( Array< int > & neighbors )

protected

Get a list of ranks that own elements in the neighborhood of our region. NOTE: MyRank is not included.

Definition at line 576 of file pncmesh.cpp.

void mfem::ParNCMesh::OnMeshUpdated ( Mesh * mesh )

protectedvirtual

Get edge and face numbering from 'mesh' (i.e., set all Edge::index and Face::index) after a new mesh was created from us.

Reimplemented from mfem::NCMesh.

Definition at line 147 of file pncmesh.cpp.

int mfem::ParNCMesh::Partition	(	long	index,
		long	total_elements
	)		const

inlineprotected

Return the processor number for a global element number.

Definition at line 274 of file pncmesh.hpp.

long mfem::ParNCMesh::PartitionFirstIndex	(	int	rank,
		long	total_elements
	)		const

inlineprotected

Return the global index of the first element owned by processor 'rank'.

Definition at line 282 of file pncmesh.hpp.

void mfem::ParNCMesh::Prune ( )

protected

Traverse the (local) refinement tree and determine which subtrees are no longer needed, i.e., their leaves are not owned by us nor are they our ghosts. These subtrees are then derefined.

Definition at line 877 of file pncmesh.cpp.

bool mfem::ParNCMesh::PruneTree ( Element * elem )

protected

Internal. Recursive part of Prune().

Definition at line 841 of file pncmesh.cpp.

bool mfem::ParNCMesh::RankInGroup	(	int	type,
		int	index,
		int	rank
	)		const

inline

Returns true if 'rank' is in the processor group of a vertex/edge/face ('type' == 0/1/2, resp.).

Definition at line 165 of file pncmesh.hpp.

void mfem::ParNCMesh::Rebalance ( )

Migrate leaf elements of the global refinement hierarchy (including ghost elements) so that each processor owns the same number of leaves (+-1).

Definition at line 1309 of file pncmesh.cpp.

void mfem::ParNCMesh::RecvRebalanceDofs	(	Array< int > &	elements,
		Array< long > &	dofs
	)

Receive element DOFs sent by SendRebalanceDofs().

Definition at line 1580 of file pncmesh.cpp.

void mfem::ParNCMesh::RedistributeElements	(	Array< int > &	new_ranks,
		int	target_elements,
		bool	record_comm
	)

protected

Assign new Element::rank to leaf elements and send them to their new owners, keeping the ghost layer up to date. Used by Rebalance() and Derefine().

Definition at line 1361 of file pncmesh.cpp.

void mfem::ParNCMesh::Refine ( const Array< Refinement > & refinements )

virtual

An override of NCMesh::Refine, which is called eventually, after making sure that refinements that occur on the processor boundary are sent to the neighbor processors so they can keep their ghost layers up to date.

Reimplemented from mfem::NCMesh.

Definition at line 911 of file pncmesh.cpp.

void mfem::ParNCMesh::SendRebalanceDofs	(	int	old_ndofs,
		const Table &	old_element_dofs,
		long	old_global_offset,
		FiniteElementSpace *	space
	)

Use the communication pattern from last Rebalance() to send element DOFs.

Definition at line 1547 of file pncmesh.cpp.

template<typename Type >

template void mfem::ParNCMesh::SynchronizeDerefinementData< double >	(	Array< Type > &	elem_data,
		const Table &	deref_table
	)

Exchange element data for derefinements that straddle processor boundaries. 'elem_data' is enlarged and filled with ghost values.

Definition at line 1173 of file pncmesh.cpp.

void mfem::ParNCMesh::Update ( )

protectedvirtual

Apart from the primary data structure, which is the element/node/face hierarchy, there is secondary data that is derived from the primary data and needs to be updated when the primary data changes. Update() takes care of that and needs to be called after refinement and derefinement. Secondary data includes: leaf_elements, vertex_nodeId, face_list, edge_list, and everything in ParNCMesh.

Reimplemented from mfem::NCMesh.

Definition at line 54 of file pncmesh.cpp.

void mfem::ParNCMesh::UpdateLayers ( )

protected

Definition at line 488 of file pncmesh.cpp.

void mfem::ParNCMesh::UpdateVertices ( )

protectedvirtual

update Vertex::index and vertex_nodeId

Reimplemented from mfem::NCMesh.

Definition at line 101 of file pncmesh.cpp.

Friends And Related Function Documentation

friend class NeighborDofMessage

friend

Definition at line 491 of file pncmesh.hpp.

friend class ParMesh

friend

Definition at line 490 of file pncmesh.hpp.

Member Data Documentation

Array<DenseMatrix*> mfem::ParNCMesh::aux_pm_store

protected

Stores modified point matrices created by GetFaceNeighbors.

Definition at line 484 of file pncmesh.hpp.

Array<Element*> mfem::ParNCMesh::boundary_layer

protected

list of type 3 elements

Definition at line 269 of file pncmesh.hpp.

Table mfem::ParNCMesh::edge_group

protected

Definition at line 255 of file pncmesh.hpp.

Array<int> mfem::ParNCMesh::edge_owner

protected

Definition at line 250 of file pncmesh.hpp.

Array<char> mfem::ParNCMesh::element_type

protected

Type of each leaf element: 1 - our element (rank == MyRank), 3 - our element, and neighbor to the ghost layer, 2 - ghost layer element (existing element, but rank != MyRank), 0 - element beyond the ghost layer, may not be a real element. See also UpdateLayers().

Definition at line 266 of file pncmesh.hpp.

Table mfem::ParNCMesh::face_group

protected

Definition at line 256 of file pncmesh.hpp.

Array<char> mfem::ParNCMesh::face_orient

protected

Definition at line 258 of file pncmesh.hpp.

Array<int> mfem::ParNCMesh::face_owner

protected

Definition at line 251 of file pncmesh.hpp.

Array<Element*> mfem::ParNCMesh::ghost_layer

protected

list of elements whose 'element_type' == 2.

Definition at line 268 of file pncmesh.hpp.

Array<Connection> mfem::ParNCMesh::index_rank

protected

Definition at line 309 of file pncmesh.hpp.

MPI_Comm mfem::ParNCMesh::MyComm

protected

Definition at line 235 of file pncmesh.hpp.

int mfem::ParNCMesh::MyRank

protected

Definition at line 236 of file pncmesh.hpp.

int mfem::ParNCMesh::NEdges

protected

Definition at line 239 of file pncmesh.hpp.

int mfem::ParNCMesh::NElements

protected

Definition at line 241 of file pncmesh.hpp.

int mfem::ParNCMesh::NFaces

protected

Definition at line 240 of file pncmesh.hpp.

int mfem::ParNCMesh::NGhostEdges

protected

Definition at line 239 of file pncmesh.hpp.

int mfem::ParNCMesh::NGhostElements

protected

Definition at line 241 of file pncmesh.hpp.

int mfem::ParNCMesh::NGhostFaces

protected

Definition at line 240 of file pncmesh.hpp.

int mfem::ParNCMesh::NGhostVertices

protected

Definition at line 238 of file pncmesh.hpp.

int mfem::ParNCMesh::NRanks

protected

Definition at line 236 of file pncmesh.hpp.

int mfem::ParNCMesh::NVertices

protected

Definition at line 238 of file pncmesh.hpp.

Array<int> mfem::ParNCMesh::old_index_or_rank

protected

After Rebalance, this array holds the old element indices, or -1 if an element didn't exist in the mesh previously. After Derefine, it holds the ranks of the old (potentially non-existent) fine elements.

Definition at line 481 of file pncmesh.hpp.

RebalanceDofMessage::Map mfem::ParNCMesh::recv_rebalance_dofs

protected

Definition at line 476 of file pncmesh.hpp.

RebalanceDofMessage::Map mfem::ParNCMesh::send_rebalance_dofs

protected

Recorded communication pattern from last Rebalance. Used by Send/RecvRebalanceDofs to ship element DOFs.

Definition at line 475 of file pncmesh.hpp.

NCList mfem::ParNCMesh::shared_edges

protected

Definition at line 245 of file pncmesh.hpp.

NCList mfem::ParNCMesh::shared_faces

protected

Definition at line 246 of file pncmesh.hpp.

NCList mfem::ParNCMesh::shared_vertices

protected

Definition at line 244 of file pncmesh.hpp.

Array<Element*> mfem::ParNCMesh::tmp_neighbors

protected

Definition at line 356 of file pncmesh.hpp.

Table mfem::ParNCMesh::vertex_group

protected

Definition at line 254 of file pncmesh.hpp.

Array<int> mfem::ParNCMesh::vertex_owner

protected

Definition at line 249 of file pncmesh.hpp.

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

Classes

Public Member Functions

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation