Communication

Classes
class	Dune::Fem::ParallelScalarProduct< DiscreteFunction >
class	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >
	In parallel computations the dofs of a discrete function are made up by all primary dofs. For technical reasons some dofs exists on multiply processes but are only primary on exactly one process. Dofs on processes that are not primary are called auxiliary. More...
struct	Dune::Fem::PrimaryDofs< AuxiliaryDofs >
	In parallel computations the dofs of a discrete function are made up by all primary dofs. For technical reasons some dofs exists on multiply processes but are only primary on exactly one process. More...
class	Dune::Fem::DefaultCommunicationManager< Space >
	default communication manager using just the grids communicate method More...
class	Dune::Fem::CommunicationManager< SpaceImp >
	use Default CommunicationManager as Communication Manager More...
class	Dune::Fem::CommunicationManagerList
	Proxy class to DependencyCache which is singleton per space. More...

Typedefs
typedef DiscreteFunctionType::DiscreteFunctionSpaceType	Dune::Fem::ParallelScalarProduct< DiscreteFunction >::DiscreteFunctionSpaceType
	type of the discrete function space
typedef DiscreteFunctionSpaceType::RangeFieldType	Dune::Fem::ParallelScalarProduct< DiscreteFunction >::RangeFieldType
	type of range field
typedef DiscreteFunctionSpaceType::BlockMapperType	Dune::Fem::ParallelScalarProduct< DiscreteFunction >::MapperType
	type of used mapper
typedef GridPart	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::GridPartType
	type of grid part
typedef Mapper	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::MapperType
	type of used mapper

Functions
	Dune::Fem::ParallelScalarProduct< DiscreteFunction >::ParallelScalarProduct (const DiscreteFunctionSpaceType &space)
	constructor taking space
template<class OtherDiscreteFunctionType >
RangeFieldType	Dune::Fem::ParallelScalarProduct< DiscreteFunction >::scalarProductDofs (const DiscreteFunctionType &x, const OtherDiscreteFunctionType &y) const
	evaluate scalar product and omit auxiliary nodes
template<class DofVector , class OtherDofVector >
RangeFieldType	Dune::Fem::ParallelScalarProduct< DiscreteFunction >::dotProduct (const DofVector &x, const OtherDofVector &y) const
	evaluate scalar product on dofVector and omit auxiliary nodes
IndexType	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::operator[] (const IndexType index) const
	return dof number of auxiliary for index
IndexType	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::size () const
	return number of auxiliary dofs
IndexType	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::primarySize () const
	return number of primaryDofs
bool	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::contains (IndexType index) const
	return true if index is contained, meaning it is a auxiliary dof
template<class MessageBuffer , class Entity >
void	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::LinkBuilder::gather (MessageBuffer &buffer, const Entity &entity) const
	read buffer and apply operation
template<class MessageBuffer , class EntityType >
void	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::LinkBuilder::scatter (MessageBuffer &buffer, const EntityType &entity, std::size_t n)
template<class Entity >
std::size_t	Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::LinkBuilder::size (const Entity &entity) const
	return local dof size to be communicated
template<class AuxiliaryDofs , class F >
static void	Dune::Fem::forEachAuxiliaryDof (const AuxiliaryDofs &auxiliaryDofs, F &&f)
	Apply action encoded in Functor f to all auxiliary dofs. More...
template<class AuxiliaryDofs , class F >
static void	Dune::Fem::forEachPrimaryDof (const AuxiliaryDofs &auxiliaryDofs, F &&f)
	Apply action encoded in Functor f to all primary dofs. More...
template<class DiscreteFunction >
void	Dune::Fem::DefaultCommunicationManager< Space >::NonBlockingCommunication::send (const DiscreteFunction &discreteFunction)
	send data for given discrete function
template<class DiscreteFunctionSpace , class Operation >
double	Dune::Fem::DefaultCommunicationManager< Space >::NonBlockingCommunication::receive (PetscDiscreteFunction< DiscreteFunctionSpace > &discreteFunction, const Operation &operation)
	receive data for discrete function and given operation
template<class DiscreteFunction , class Operation >
double	Dune::Fem::DefaultCommunicationManager< Space >::NonBlockingCommunication::receive (DiscreteFunction &discreteFunction, const Operation &operation)
	receive data for discrete function and given operation
template<class DiscreteFunction >
double	Dune::Fem::DefaultCommunicationManager< Space >::NonBlockingCommunication::receive (DiscreteFunction &discreteFunction)
	receive method with default operation
	Dune::Fem::DefaultCommunicationManager< Space >::DefaultCommunicationManager (const SpaceType &space, const InterfaceType interface, const CommunicationDirection dir)
	constructor taking space and communication interface/direction
InterfaceType	Dune::Fem::DefaultCommunicationManager< Space >::communicationInterface () const
	return communication interface
CommunicationDirection	Dune::Fem::DefaultCommunicationManager< Space >::communicationDirection () const
	return communication direction
double	Dune::Fem::DefaultCommunicationManager< Space >::buildTime () const
	return time needed for last build More...
double	Dune::Fem::DefaultCommunicationManager< Space >::exchangeTime () const
	return time needed for last exchange of data More...
NonBlockingCommunicationType	Dune::Fem::DefaultCommunicationManager< Space >::nonBlockingCommunication () const
	return object for non-blocking communication More...
template<class DiscreteFunction >
void	Dune::Fem::DefaultCommunicationManager< Space >::exchange (DiscreteFunction &discreteFunction) const
	exchange data for a discrete function using the copy operation More...
template<class DiscreteFunction , class Operation >
void	Dune::Fem::DefaultCommunicationManager< Space >::exchange (DiscreteFunction &discreteFunction, const Operation &operation) const
	exchange data for a discrete function using the given operation More...
template<class DiscreteFunction , class Operation >
void	Dune::Fem::DefaultCommunicationManager< Space >::exchange (const Space &space, DiscreteFunction &discreteFunction, const Operation &operation) const
	exchange data for a discrete function using the given operation More...
	Dune::Fem::CommunicationManager< SpaceImp >::CommunicationManager (const SpaceImp &space, const InterfaceType interface, const CommunicationDirection dir)
	constructor taking space and communication interface/direction
	Dune::Fem::CommunicationManager< SpaceImp >::CommunicationManager (const SpaceImp &space)
	constructor taking space
	Dune::Fem::CommunicationManagerList::DiscreteFunctionCommunicator< DiscreteFunctionImp, Operation >::DiscreteFunctionCommunicator (DiscreteFunctionType &df, const Operation &op)
	constructor taking disctete function
template<class CombinedObjectType >
	Dune::Fem::CommunicationManagerList::CommunicationManagerList (CombinedObjectType &cObj)
	constructor
template<class DiscreteFunctionImp , class Operation >
void	Dune::Fem::CommunicationManagerList::addToList (DiscreteFunctionImp &df, const Operation &operation)
	add discrete function to communication list
template<class DiscreteFunctionImp >
void	Dune::Fem::CommunicationManagerList::addToList (DiscreteFunctionImp &df)
	add discrete function to communication list
void	Dune::Fem::CommunicationManagerList::exchange () const
template<class GridPart , class BaseMapper , class GlobalKey , class F >
static void	Dune::Fem::forEachPrimaryDof (const AuxiliaryDofs< GridPart, GhostDofMapper< GridPart, BaseMapper, GlobalKey > > &auxiliaryDofs, F &&f)
	Apply action encoded in Functor f to all primary dofs. More...

Detailed Description

Function Documentation

buildTime()

template<class Space >

double Dune::Fem::DefaultCommunicationManager< Space >::buildTime ( ) const

inline

return time needed for last build

Returns

time needed for last build of caches (if needed)

exchange() [1/4]

void Dune::Fem::CommunicationManagerList::exchange ( ) const

inline

exchange discrete function to all procs we share data with by using given OperationImp when receiving data from other procs

exchange() [2/4]

template<class Space >

template<class DiscreteFunction , class Operation >

void Dune::Fem::DefaultCommunicationManager< Space >::exchange ( const Space &  space, DiscreteFunction &  discreteFunction, const Operation &  operation  ) const

inline

exchange data for a discrete function using the given operation

The used operation is derived from the type of the op-pointer. The actual pointer is not used.

Parameters

	discreteFunction	discrete function to communicate
[in]	operation	a (phony) pointer to an operation

References DUNE_THROW.

exchange() [3/4]

template<class Space >

template<class DiscreteFunction >

void Dune::Fem::DefaultCommunicationManager< Space >::exchange ( DiscreteFunction &  discreteFunction ) const

inline

exchange data for a discrete function using the copy operation

Parameters

discreteFunction

discrete function to communicate

References Dune::Fem::DefaultCommunicationManager< Space >::exchange().

Referenced by Dune::Fem::DiscreteFunctionSpaceDefault< FunctionSpaceTraits >::communicate(), and Dune::Fem::DefaultCommunicationManager< Space >::exchange().

exchange() [4/4]

template<class Space >

template<class DiscreteFunction , class Operation >

void Dune::Fem::DefaultCommunicationManager< Space >::exchange ( DiscreteFunction &  discreteFunction, const Operation &  operation  ) const

inline

exchange data for a discrete function using the given operation

The used operation is derived from the type of the op-pointer. The actual pointer is not used.

Parameters

	discreteFunction	discrete function to communicate
[in]	operation	a (phony) pointer to an operation

exchangeTime()

template<class Space >

double Dune::Fem::DefaultCommunicationManager< Space >::exchangeTime ( ) const

inline

return time needed for last exchange of data

Returns

time needed for last exchange of data

forEachAuxiliaryDof()

template<class AuxiliaryDofs , class F >

static void Dune::Fem::forEachAuxiliaryDof ( const AuxiliaryDofs &  auxiliaryDofs, F &&  f  )

static

Apply action encoded in Functor f to all auxiliary dofs.

Parameters

[in]	auxiliaryDofs	AuxiliaryDofs instance (from space)
[in]	f	a Functor or lambda offering operator()( const size_t dof )

forEachPrimaryDof() [1/2]

template<class AuxiliaryDofs , class F >

static void Dune::Fem::forEachPrimaryDof ( const AuxiliaryDofs &  auxiliaryDofs, F &&  f  )

static

Apply action encoded in Functor f to all primary dofs.

Parameters

[in]	auxiliaryDofs	AuxiliaryDofs instance (from space)
[in]	f	a Functor or lambda offering operator()( const size_t dof )

Referenced by Dune::Fem::ParallelScalarProduct< DiscreteFunction >::dotProduct().

forEachPrimaryDof() [2/2]

template<class GridPart , class BaseMapper , class GlobalKey , class F >

static void Dune::Fem::forEachPrimaryDof ( const AuxiliaryDofs< GridPart, GhostDofMapper< GridPart, BaseMapper, GlobalKey > > &  auxiliaryDofs, F &&  f  )

static

Apply action encoded in Functor f to all primary dofs.

Parameters

[in]	auxiliaryDofs	AuxiliaryDofs instance (from space)
[in]	f	a Functor or lambda offering operator()( const size_t dof )

Note

: This is a specialization for the Petsc GhostMapper based AuxiliaryDofs.

References Dune::size().

nonBlockingCommunication()

template<class Space >

NonBlockingCommunicationType Dune::Fem::DefaultCommunicationManager< Space >::nonBlockingCommunication ( ) const

inline

return object for non-blocking communication

Returns

NonBlockingCommunicationType containing send and receive facilities

scatter()

template<class GridPart , class Mapper >

template<class MessageBuffer , class EntityType >

void Dune::Fem::AuxiliaryDofs< GridPart, Mapper >::LinkBuilder::scatter ( MessageBuffer &  buffer, const EntityType &  entity, std::size_t  n  )

inline

read buffer and apply operation scatter is called for one every entity several times depending on how much data was gathered