Dune::RemoteIndices< T, A > Class Template Reference

The indices present on remote processes. More...

#include <dune/common/parallel/remoteindices.hh>

Public Types
typedef T	ParallelIndexSet
	Type of the index set we use, e.g. ParallelLocalIndexSet.
typedef CollectiveIterator< T, A >	CollectiveIteratorT
	The type of the collective iterator over all remote indices.
typedef ParallelIndexSet::GlobalIndex	GlobalIndex
	The type of the global index.
typedef ParallelIndexSet::LocalIndex	LocalIndex
	The type of the local index.
typedef LocalIndex::Attribute	Attribute
	The type of the attribute.
typedef Dune::RemoteIndex< GlobalIndex, Attribute >	RemoteIndex
	Type of the remote indices we manage.
using	Allocator = typename std::allocator_traits< A >::template rebind_alloc< RemoteIndex >
	The type of the allocator for the remote index list.
typedef Dune::SLList< RemoteIndex, Allocator >	RemoteIndexList
	The type of the remote index list.
typedef std::map< int, std::pair< RemoteIndexList *, RemoteIndexList * > >	RemoteIndexMap
	The type of the map from rank to remote index list.

Public Member Functions
	RemoteIndices (const ParallelIndexSet &source, const ParallelIndexSet &destination, const MPI_Comm &comm, const std::vector< int > &neighbours=std::vector< int >(), bool includeSelf=false)
	Constructor. More...
void	setIncludeSelf (bool includeSelf)
	Tell whether sending from indices of the processor to other indices on the same processor is enabled even if the same indexset is used on both the sending and receiving side. More...
void	setIndexSets (const ParallelIndexSet &source, const ParallelIndexSet &destination, const MPI_Comm &comm, const std::vector< int > &neighbours=std::vector< int >())
	Set the index sets and communicator we work with. More...
	~RemoteIndices ()
	Destructor.
template<bool ignorePublic>
void	rebuild ()
	Rebuilds the set of remote indices. More...
bool	isSynced () const
	Checks whether the remote indices are synced with the indexsets. More...
MPI_Comm	communicator () const
	Get the mpi communicator used.
template<bool mode, bool send>
RemoteIndexListModifier< T, A, mode >	getModifier (int process)
	Get a modifier for a remote index list. More...
const_iterator	find (int proc) const
	Find an iterator over the remote index lists of a specific process. More...
const_iterator	begin () const
	Get an iterator over all remote index lists. More...
const_iterator	end () const
	Get an iterator over all remote index lists. More...
template<bool send>
CollectiveIteratorT	iterator () const
	Get an iterator for collectively iterating over the remote indices of all remote processes.
void	free ()
	Free the index lists.
int	neighbours () const
	Get the number of processors we share indices with. More...
const ParallelIndexSet &	sourceIndexSet () const
	Get the index set at the source.
const ParallelIndexSet &	destinationIndexSet () const
	Get the index set at destination.

Friends
template<class G , class T1 , class T2 >
void	fillIndexSetHoles (const G &graph, Dune::OwnerOverlapCopyCommunication< T1, T2 > &oocomm)
	Fills the holes in an index set. More...

Detailed Description

template<class T, class A = std::allocator<RemoteIndex<typename T::GlobalIndex, typename T::LocalIndex::Attribute> >>
class Dune::RemoteIndices< T, A >

The indices present on remote processes.

To set up communication between the set of processes active in the communication every process needs to know which indices are also known to other processes and which attributes are attached to them on the remote side.

This information is managed by this class. The information can either be computed automatically calling rebuild (which requires information to be sent in a ring) or set up by hand using the RemoteIndexListModifiers returned by function getModifier(int).

Template Parameters

T	The type of the underlying index set.
A	The type of the allocator to use.

Friends And Related Function Documentation

fillIndexSetHoles

template<class T , class A = std::allocator<RemoteIndex<typename T::GlobalIndex, typename T::LocalIndex::Attribute> >>

template<class G , class T1 , class T2 >

void fillIndexSetHoles ( const G &  graph, Dune::OwnerOverlapCopyCommunication< T1, T2 > &  oocomm  )

friend

Fills the holes in an index set.

In general the index set only needs to know those indices where communication my occur. In usual FE computations these are just those near the processor boundaries.

For the repartitioning we need to know all all indices for which data is stored. The missing indices will be created in this method.

Parameters

graph	The graph to reparition.
oocomm	The communication information.

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

• dune/common/parallel/remoteindices.hh