This class provides an communication context for distributed memory parallelism. More...

#include <parallelcontext.h>

Collaboration diagram for oofem::ParallelContext:

Public Member Functions
	ParallelContext (EngngModel *e)
	Creates a context belonging to a system of equations in a given engineering model. More...

	~ParallelContext ()

void	init (int newDi)
	Initiates the mapping for given domain. More...

int	giveNumberOfLocalEqs ()

int	giveNumberOfGlobalEqs ()

int	giveNumberOfNaturalEqs ()

Natural2GlobalOrdering *	giveN2Gmap ()

Natural2LocalOrdering *	giveN2Lmap ()

Convenience functions for working with distributed arrays.
bool	isLocal (DofManager *dman)

double	localNorm (const FloatArray &src)
	Norm for a locally distributed array. More...

double	dotProduct (const FloatArray &a, const FloatArray &b)
	Dot product for a distributed array. More...

double	localDotProduct (const FloatArray &a, const FloatArray &b)
	Dot product for a locally distributed array. More...

double	accumulate (double local)
	Accumulates the global value. More...

void	accumulate (const FloatArray &local, FloatArray &global)
	Accumulates the global value. More...

Protected Attributes
int	di

EngngModel *	emodel

Natural2GlobalOrdering	n2g

Natural2LocalOrdering	n2l

Detailed Description

This class provides an communication context for distributed memory parallelism.

Tasks:

Keeping track of the parallel communicator.
Determining owner for shared dof managers.

Definition at line 54 of file parallelcontext.h.

Constructor & Destructor Documentation

oofem::ParallelContext::ParallelContext ( EngngModel * e )

Creates a context belonging to a system of equations in a given engineering model.

Parameters

e	Engineering model to work with.

Definition at line 43 of file parallelcontext.C.

oofem::ParallelContext::~ParallelContext ( )

Definition at line 51 of file parallelcontext.C.

Member Function Documentation

double oofem::ParallelContext::accumulate ( double local )

Accumulates the global value.

Definition at line 169 of file parallelcontext.C.

References emodel, oofem::EngngModel::giveParallelComm(), and oofem::EngngModel::isParallel().

Referenced by oofem::NRSolver::checkConvergence(), oofem::CylindricalALM::checkConvergence(), oofem::StaggeredSolver::checkConvergenceDofIdArray(), oofem::CylindricalALM::computeDeltaLambda(), oofem::ZZErrorEstimator::estimateError(), and oofem::CylindricalALM::solve().

void oofem::ParallelContext::accumulate	(	const FloatArray &	local,
		FloatArray &	global
	)

Accumulates the global value.

Todo:: Why aren't we using the C++ MPI functions?

Definition at line 184 of file parallelcontext.C.

References emodel, oofem::EngngModel::giveParallelComm(), oofem::FloatArray::givePointer(), oofem::FloatArray::giveSize(), oofem::EngngModel::isParallel(), and oofem::FloatArray::resize().

double oofem::ParallelContext::dotProduct	(	const FloatArray &	a,
		const FloatArray &	b
	)

Dot product for a distributed array.

Common for convergence criterion and such.

Natural2GlobalOrdering* oofem::ParallelContext::giveN2Gmap ( )

inline

Definition at line 112 of file parallelcontext.h.

Referenced by oofem::PetscSparseMtrx::assemble(), oofem::PetscSparseMtrx::buildInternalStructure(), and oofem::PetscSparseMtrx::scatterL2G().

Natural2LocalOrdering* oofem::ParallelContext::giveN2Lmap ( )

inline

Definition at line 113 of file parallelcontext.h.

Referenced by oofem::PetscSparseMtrx::buildInternalStructure(), localDotProduct(), localNorm(), and oofem::PetscSparseMtrx::scatterL2G().

int oofem::ParallelContext::giveNumberOfGlobalEqs ( )

Definition at line 91 of file parallelcontext.C.

References di, emodel, oofem::EngngModel::giveNumberOfDomainEquations(), oofem::Natural2GlobalOrdering::giveNumberOfGlobalEqs(), oofem::EngngModel::isParallel(), and n2g.

Referenced by init().

int oofem::ParallelContext::giveNumberOfLocalEqs ( )

Definition at line 75 of file parallelcontext.C.

References di, emodel, oofem::EngngModel::giveNumberOfDomainEquations(), oofem::Natural2GlobalOrdering::giveNumberOfLocalEqs(), oofem::EngngModel::isParallel(), and n2g.

Referenced by init().

int oofem::ParallelContext::giveNumberOfNaturalEqs ( )

Definition at line 106 of file parallelcontext.C.

References di, emodel, and oofem::EngngModel::giveNumberOfDomainEquations().

Referenced by oofem::PetscSparseMtrx::buildInternalStructure(), init(), and oofem::PetscSparseMtrx::scatterG2L().

void oofem::ParallelContext::init ( int newDi )

Initiates the mapping for given domain.

Parameters

di	Domain index.

Todo:: Should we even do this here? The user of the requested ParallelContext will just set this manually instead.

Todo:: This shouldn't be hardcoded to just the default numbering schemes. In fact, this shouldn't even have "prescribed" and "free", just use the given numbering.

Definition at line 55 of file parallelcontext.C.

References di, emodel, giveNumberOfGlobalEqs(), giveNumberOfLocalEqs(), giveNumberOfNaturalEqs(), oofem::EngngModel::giveRank(), oofem::Natural2GlobalOrdering::init(), oofem::Natural2LocalOrdering::init(), oofem::EngngModel::isParallel(), n2g, and n2l.