Inheritance diagram for MEDCoupling::MPIProcessorGroup:

Collaboration diagram for MEDCoupling::MPIProcessorGroup:

Public Member Functions
bool	containsMyRank () const

ProcessorGroup *	createComplementProcGroup () const

ProcessorGroup *	createProcGroup () const

virtual MPIProcessorGroup *	deepCopy () const

virtual ProcessorGroup *	fuse (const ProcessorGroup &) const

const MPI_Comm *	getComm () const

MPI_Comm	getWorldComm ()

void	intersect (ProcessorGroup &)

	MPIProcessorGroup (const CommInterface &interface)

	MPIProcessorGroup (const CommInterface &interface, std::set< int > proc_ids, const MPI_Comm &world_comm=MPI_COMM_WORLD)

	MPIProcessorGroup (const ProcessorGroup &proc_group, std::set< int > proc_ids)

	MPIProcessorGroup (const CommInterface &interface, int pstart, int pend, const MPI_Comm &world_comm=MPI_COMM_WORLD)

	MPIProcessorGroup (const MPIProcessorGroup &other)

int	myRank () const

int	translateRank (const ProcessorGroup *group, int rank) const

virtual	~MPIProcessorGroup ()

Public Member Functions inherited from MEDCoupling::ProcessorGroup
bool	contains (int rank) const

const CommInterface &	getCommInterface () const

virtual const std::set< int > &	getProcIDs () const

	ProcessorGroup (const CommInterface &interface)

	ProcessorGroup (const CommInterface &interface, std::set< int > proc_ids)

	ProcessorGroup (const ProcessorGroup &proc_group, std::set< int > proc_ids)

	ProcessorGroup (const ProcessorGroup &other)

	ProcessorGroup (const CommInterface &interface, int start, int end)

int	size () const

virtual	~ProcessorGroup ()

Additional Inherited Members
Protected Attributes inherited from MEDCoupling::ProcessorGroup
const CommInterface	_comm_interface

std::set< int >	_proc_ids

Detailed Description

The MPIProcessorGroup class represents a set of distinct "processors" (computation nodes) in a MPI code. It is used to define the MPI topology of code couplings.

Groups can be set up in various ways, the most common being the use of the MPIProcessorGroup(Comminterface, int pfirst, int plast) constructor.

The following code excerpt creates two processor groups on respectively 3 and 2 processors.

int main()
{
MPI_Init(&argc,&argv);
CommInterface comm_interface;
MPIProcessorGroup codeA_group(comm_interface, 0, 2);  // groups processors 0, 1 and 2
MPIProcessorGroup codeB_group(comm_interface, 3, 4);  // groups processors 3 and 4

...
}

Constructor & Destructor Documentation

MEDCoupling::MPIProcessorGroup::MPIProcessorGroup ( const CommInterface & interface )

Creates a processor group that is based on all the processors of MPI_COMM_WORLD .This routine must be called by all processors in MPI_COMM_WORLD.

Parameters

interface CommInterface object giving access to the MPI communication layer

References MEDCoupling::ProcessorGroup::_comm_interface, MEDCoupling::ProcessorGroup::_proc_ids, MEDCoupling::CommInterface::commGroup(), MEDCoupling::CommInterface::commSize(), and MEDCoupling::ProcessorGroup::size().

Referenced by createComplementProcGroup(), createProcGroup(), deepCopy(), and fuse().

MEDCoupling::MPIProcessorGroup::MPIProcessorGroup	(	const CommInterface &	interface,
		std::set< int >	proc_ids,
		const MPI_Comm &	world_comm = `MPI_COMM_WORLD`
	)

MEDCoupling::MPIProcessorGroup::MPIProcessorGroup	(	const ProcessorGroup &	proc_group,
		std::set< int >	proc_ids
	)

MEDCoupling::MPIProcessorGroup::MPIProcessorGroup	(	const CommInterface &	comm_interface,
		int	pstart,
		int	pend,
		const MPI_Comm &	world_comm = `MPI_COMM_WORLD`
	)

Creates a processor group that is based on the processors between pstart and pend. This routine must be called by all processors in MPI_COMM_WORLD.

Parameters

comm_interface	CommInterface object giving access to the MPI communication layer
pstart	id in MPI_COMM_WORLD of the first processor in the group
pend	id in MPI_COMM_WORLD of the last processor in the group

References MEDCoupling::ProcessorGroup::_comm_interface, MEDCoupling::CommInterface::commCreate(), MEDCoupling::CommInterface::commGroup(), MEDCoupling::CommInterface::commRank(), MEDCoupling::CommInterface::commSize(), MEDCoupling::CommInterface::groupFree(), and MEDCoupling::CommInterface::groupIncl().

MEDCoupling::MPIProcessorGroup::MPIProcessorGroup ( const MPIProcessorGroup & other )

MEDCoupling::MPIProcessorGroup::~MPIProcessorGroup ( )

virtual

References MEDCoupling::ProcessorGroup::_comm_interface, MEDCoupling::CommInterface::commFree(), and MEDCoupling::CommInterface::groupFree().

Member Function Documentation

MPIProcessorGroup * MEDCoupling::MPIProcessorGroup::deepCopy ( ) const

virtual

Implements MEDCoupling::ProcessorGroup.

References MPIProcessorGroup().

ProcessorGroup * MEDCoupling::MPIProcessorGroup::fuse ( const ProcessorGroup & group ) const

virtual

Adding processors of group group to local group.

Parameters

group group that is to be fused with current group

Returns: new group formed by the fusion of local group and group.

Implements MEDCoupling::ProcessorGroup.

References MEDCoupling::ProcessorGroup::_comm_interface, MEDCoupling::ProcessorGroup::_proc_ids, MEDCoupling::ProcessorGroup::getProcIDs(), and MPIProcessorGroup().

void MEDCoupling::MPIProcessorGroup::intersect ( ProcessorGroup & )

virtual

Implements MEDCoupling::ProcessorGroup.

int MEDCoupling::MPIProcessorGroup::myRank ( ) const

virtual

Implements MEDCoupling::ProcessorGroup.

Referenced by MEDCoupling::ExplicitCoincidentDEC::broadcastTopology().

bool MEDCoupling::MPIProcessorGroup::containsMyRank ( ) const

virtual

Implements MEDCoupling::ProcessorGroup.

int MEDCoupling::MPIProcessorGroup::translateRank	(	const ProcessorGroup *	group,
		int	rank
	)		const

virtual

Translation of the rank id between two processor groups. This method translates rank rank on the current processor group to the rank on group pointed by group.

Parameters