ParaMEDMEM.BlockTopology Class Reference

#include <BlockTopology.hxx>

Inheritance diagram for ParaMEDMEM.BlockTopology:

Public Member Functions
	BlockTopology ()
	BlockTopology (const ProcessorGroup &group, MEDCouplingCMesh *grid)
	BlockTopology (const BlockTopology &geom_topo, const ComponentTopology &comp_topo)
	BlockTopology (const ProcessorGroup &group, int nb_elem)
virtual	~BlockTopology ()
int	getNbElements () const
	Retrieves the number of elements for a given topology.
int	getNbLocalElements () const
const ProcessorGroup *	getProcGroup () const
std::pair< int, int >	globalToLocal (const int) const
	converts a pair <subdomainid,local> to a global number
int	localToGlobal (const std::pair< int, int >) const
std::vector< std::pair< int, int > >	getLocalArrayMinMax () const
int	getDimension () const
void	serialize (int *&serializer, int &size) const
void	unserialize (const int *serializer, const CommInterface &comm_interface)
Data Fields
int	_dimension
std::vector< int >	_nb_procs_per_dim
std::vector< std::vector< int > >	_local_array_indices
std::vector< CYCLE_TYPE >	_cycle_type
const ProcessorGroup *	_proc_group
int	_nb_elems
bool	_owns_processor_group

Constructor & Destructor Documentation

ParaMEDMEM.BlockTopology.BlockTopology ( )

ParaMEDMEM.BlockTopology::BlockTopology	(	const ProcessorGroup &	group,
		MEDCouplingCMesh *	grid
	)

Constructor of a block topology from a grid. This preliminary version simply splits along the first axis instead of making the best choice with respect to the values of the different axes.

References ParaMEDMEM.BlockTopology._cycle_type, ParaMEDMEM.BlockTopology._nb_elems, ParaMEDMEM.BlockTopology._nb_procs_per_dim, ParaMEDMEM.BlockTopology._proc_group, ParaMEDMEM.Block, ParaMEDMEM.MEDCouplingCMesh.getCoordsAt(), ParaMEDMEM.DataArray.getNbOfElems(), and ParaMEDMEM.ProcessorGroup.size().

ParaMEDMEM.BlockTopology::BlockTopology	(	const BlockTopology &	geom_topo,
		const ComponentTopology &	comp_topo
	)

Creation of a block topology by composing a geometrical topology and a component topology. This constructor is intended for creating fields for which the parallel distribution is made on the components of the field rather than on the geometrical partitioning of the underlying mesh.

ParaMEDMEM.BlockTopology::BlockTopology	(	const ProcessorGroup &	group,
		int	nb_elem
	)

Constructor for creating a one-dimensional topology from a processor group and a local number of elements on each processor

The function must be called only by the processors belonging to group group. Calling it from a processor not belonging to group will cause an MPI error, while calling from a subset of group will result in a deadlock.

References ParaMEDMEM.BlockTopology._cycle_type, ParaMEDMEM.BlockTopology._nb_elems, ParaMEDMEM.BlockTopology._nb_procs_per_dim, ParaMEDMEM.BlockTopology._proc_group, ParaMEDMEM.CommInterface.allGather(), ParaMEDMEM.Block, ParaMEDMEM.MPIProcessorGroup.getComm(), ParaMEDMEM.ProcessorGroup.getCommInterface(), and ParaMEDMEM.ProcessorGroup.size().

ParaMEDMEM.BlockTopology::~BlockTopology ( ) [virtual]

References ParaMEDMEM.BlockTopology._owns_processor_group, and ParaMEDMEM.BlockTopology._proc_group.

Member Function Documentation

int ParaMEDMEM.BlockTopology.getNbElements ( ) const [virtual]

Retrieves the number of elements for a given topology.

Implements ParaMEDMEM.Topology.

References ParaMEDMEM.BlockTopology._nb_elems.

int ParaMEDMEM.BlockTopology::getNbLocalElements ( ) const [virtual]

Implements ParaMEDMEM.Topology.

References ParaMEDMEM.BlockTopology._nb_procs_per_dim, ParaMEDMEM.BlockTopology._proc_group, and ParaMEDMEM.ProcessorGroup.myRank().

const ProcessorGroup* ParaMEDMEM.BlockTopology.getProcGroup ( ) const [virtual]

Implements ParaMEDMEM.Topology.

References ParaMEDMEM.BlockTopology._proc_group.

std::pair< int, int > ParaMEDMEM.BlockTopology::globalToLocal ( const int global ) const

converts a pair <subdomainid,local> to a global number

References ParaMEDMEM.BlockTopology._dimension, ParaMEDMEM.BlockTopology._local_array_indices, ParaMEDMEM.BlockTopology._nb_elems, ParaMEDMEM.BlockTopology._proc_group, ParaMEDMEM.ProcessorGroup.size(), and test_NonCoincidentDEC.size.

int ParaMEDMEM.BlockTopology.localToGlobal ( const std::pair< int, int > ) const

std::vector< std::pair< int, int > > ParaMEDMEM.BlockTopology::getLocalArrayMinMax ( ) const

Retrieves the min and max indices of the domain stored locally for each dimension. The output vector has the topology dimension as a size and each pair <int,int> contains min and max. Indices range from min to max-1.

References ParaMEDMEM.BlockTopology._nb_procs_per_dim, ParaMEDMEM.BlockTopology._proc_group, and ParaMEDMEM.ProcessorGroup.myRank().

int ParaMEDMEM.BlockTopology.getDimension ( ) const

References ParaMEDMEM.BlockTopology._dimension.