Provides classes for syncing distributed indexed data structures. More...

Files
file	communicator.hh
	Provides utility classes for syncing distributed data via MPI communication.

file	indexset.hh
	Provides a map between global and local indices.

file	indicessyncer.hh
	Class for adding missing indices of a distributed index set in a local communication.

file	interface.hh
	Provides classes for building the communication interface between remote indices.

file	localindex.hh
	Provides classes for use as the local index in ParallelIndexSet.

file	plocalindex.hh
	Provides classes for use as the local index in ParallelIndexSet for distributed computing.

file	remoteindices.hh
	Classes describing a distributed indexset.

file	selection.hh
	Provides classes for selecting indices based on attribute flags.

file	variablesizecommunicator.hh
	A communicator that only needs to know the number of elements per index at the sender side.

Classes
struct	Dune::SizeOne
	Flag for marking indexed data structures where data at each index is of the same size. More...

struct	Dune::VariableSize
	Flag for marking indexed data structures where the data at each index may be a variable multiple of another type. More...

struct	Dune::CommPolicy< V >
	Default policy used for communicating an indexed type. More...

class	Dune::BufferedCommunicator
	A communicator that uses buffers to gather and scatter the data to be send or received. More...

class	Dune::IndexPair< TG, TL >
	A pair consisting of a global and local index. More...

struct	Dune::MPITraits< T >
	A traits class describing the mapping of types onto MPI_Datatypes. More...

class	Dune::InvalidIndexSetState
	Exception indicating that the index set is not in the expected state. More...

class	Dune::GlobalLookupIndexSet< I >
	Decorates an index set with the possibility to find a global index that is mapped to a specific local. More...

class	Dune::ParallelIndexSet< TG, TL, N >
	Manager class for the mapping between local indices and globally unique indices. More...

class	Dune::ParallelIndexSet< TG, TL, N >::iterator
	The iterator over the pairs. More...

class	Dune::IndicesSyncer< T >
	Class for recomputing missing indices of a distributed index set. More...

class	Dune::Interface
	Communication interface between remote and local indices. More...

class	Dune::LocalIndex
	An index present on the local process. More...

class	Dune::ParallelLocalIndex< T >
	An index present on the local process with an additional attribute flag. More...

class	Dune::MPITraits< ParallelLocalIndex< T > >

class	Dune::MPITraits< IndexPair< TG, ParallelLocalIndex< TA > > >

class	Dune::RemoteIndices< T, A >
	The indices present on remote processes. More...

class	Dune::RemoteIndex< T1, T2 >
	Information about an index residing on another processor. More...

class	Dune::RemoteIndexListModifier< T, A, mode >
	Modifier for adding and/or deleting remote indices from the remote index list. More...

class	Dune::CollectiveIterator< T, A >
	A collective iterator for moving over the remote indices for all processes collectively. More...

class	Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >
	A class setting up standard communication for a two-valued attribute set with owner/overlap/copy semantics. More...

class	Dune::SelectionIterator< TS, TG, TL, N >
	A const iterator over an uncached selection. More...

class	Dune::UncachedSelection< TS, TG, TL, N >
	An uncached selection of indices. More...

class	Dune::Selection< TS, TG, TL, N >
	A cached selection of indices. More...

class	Dune::VariableSizeCommunicator< Allocator >
	A buffered communicator where the amount of data sent does not have to be known a priori. More...

Typedefs
typedef TG	Dune::IndexPair< TG, TL >::GlobalIndex
	the type of the global index. More...

typedef TL	Dune::IndexPair< TG, TL >::LocalIndex
	the type of the local index. More...

typedef TG	Dune::ParallelIndexSet< TG, TL, N >::GlobalIndex
	the type of the global index. This type has to provide at least a operator< for sorting.

typedef TL	Dune::ParallelIndexSet< TG, TL, N >::LocalIndex
	The type of the local index, e.g. ParallelLocalIndex. More...

typedef Dune::IndexPair< GlobalIndex, LocalIndex >	Dune::ParallelIndexSet< TG, TL, N >::IndexPair
	The type of the pair stored.

typedef ArrayList< IndexPair, N >::const_iterator	Dune::ParallelIndexSet< TG, TL, N >::const_iterator
	The constant iterator over the pairs.

typedef I	Dune::GlobalLookupIndexSet< I >::ParallelIndexSet
	The type of the index set.

typedef ParallelIndexSet::LocalIndex	Dune::GlobalLookupIndexSet< I >::LocalIndex
	The type of the local index.

typedef ParallelIndexSet::GlobalIndex	Dune::GlobalLookupIndexSet< I >::GlobalIndex
	The type of the global index.

typedef ParallelIndexSet::const_iterator	Dune::GlobalLookupIndexSet< I >::const_iterator
	The iterator over the index pairs.

typedef T	Dune::IndicesSyncer< T >::ParallelIndexSet
	The type of the index set.

typedef ParallelIndexSet::IndexPair	Dune::IndicesSyncer< T >::IndexPair
	The type of the index pair.

typedef ParallelIndexSet::GlobalIndex	Dune::IndicesSyncer< T >::GlobalIndex
	Type of the global index used in the index set.

typedef ParallelIndexSet::LocalIndex::Attribute	Dune::IndicesSyncer< T >::Attribute
	Type of the attribute used in the index set.

typedef Dune::RemoteIndices< ParallelIndexSet >	Dune::IndicesSyncer< T >::RemoteIndices
	Type of the remote indices.

Enumerations
enum	Dune::ParallelIndexSetState { Dune::GROUND , Dune::RESIZE }
	The states the index set can be in. More...

enum	{ Dune::ParallelIndexSet< TG, TL, N >::arraySize = (N>0) ? N : 1 }

enum	Dune::LocalIndexState
	The states avaiable for the local indices. More...

Functions
template<class TG , class TL >
std::ostream &	Dune::operator<< (std::ostream &os, const IndexPair< TG, TL > &pair)
	Print an index pair. More...

	Dune::IndexPair< TG, TL >::IndexPair (const GlobalIndex &global, const LocalIndex &local)
	Constructs a new Pair. More...

	Dune::IndexPair< TG, TL >::IndexPair ()
	Construct a new Pair.

	Dune::IndexPair< TG, TL >::IndexPair (const GlobalIndex &global)
	Constructs a new Pair. More...

const GlobalIndex &	Dune::IndexPair< TG, TL >::global () const
	Get the global index. More...

LocalIndex &	Dune::IndexPair< TG, TL >::local ()
	Get the local index. More...

const LocalIndex &	Dune::IndexPair< TG, TL >::local () const
	Get the local index. More...

void	Dune::IndexPair< TG, TL >::setLocal (int index)
	Set the local index. More...

	Dune::ParallelIndexSet< TG, TL, N >::ParallelIndexSet ()
	Constructor.

const ParallelIndexSetState &	Dune::ParallelIndexSet< TG, TL, N >::state ()
	Get the state the index set is in. More...

void	Dune::ParallelIndexSet< TG, TL, N >::beginResize ()
	Indicate that the index set is to be resized. More...

void	Dune::ParallelIndexSet< TG, TL, N >::add (const GlobalIndex &global)
	Add an new index to the set. More...

void	Dune::ParallelIndexSet< TG, TL, N >::add (const GlobalIndex &global, const LocalIndex &local)
	Add an new index to the set. More...

void	Dune::ParallelIndexSet< TG, TL, N >::markAsDeleted (const iterator &position)
	Mark an index as deleted. More...

void	Dune::ParallelIndexSet< TG, TL, N >::endResize ()
	Indicate that the resizing finishes. More...

IndexPair &	Dune::ParallelIndexSet< TG, TL, N >::operator[] (const GlobalIndex &global)
	Find the index pair with a specific global id. More...

IndexPair &	Dune::ParallelIndexSet< TG, TL, N >::at (const GlobalIndex &global)
	Find the index pair with a specific global id. More...

bool	Dune::ParallelIndexSet< TG, TL, N >::exists (const GlobalIndex &global) const
	Find the index pair with a specific global id. More...

const IndexPair &	Dune::ParallelIndexSet< TG, TL, N >::operator[] (const GlobalIndex &global) const
	Find the index pair with a specific global id. More...

const IndexPair &	Dune::ParallelIndexSet< TG, TL, N >::at (const GlobalIndex &global) const
	Find the index pair with a specific global id. More...

iterator	Dune::ParallelIndexSet< TG, TL, N >::begin ()
	Get an iterator over the indices positioned at the first index. More...

iterator	Dune::ParallelIndexSet< TG, TL, N >::end ()
	Get an iterator over the indices positioned after the last index. More...

const_iterator	Dune::ParallelIndexSet< TG, TL, N >::begin () const
	Get an iterator over the indices positioned at the first index. More...

const_iterator	Dune::ParallelIndexSet< TG, TL, N >::end () const
	Get an iterator over the indices positioned after the last index. More...

void	Dune::ParallelIndexSet< TG, TL, N >::renumberLocal ()
	Renumbers the local index numbers. More...

int	Dune::ParallelIndexSet< TG, TL, N >::seqNo () const
	Get the internal sequence number. More...

size_t	Dune::ParallelIndexSet< TG, TL, N >::size () const
	Get the total number (public and nonpublic) indices. More...

template<class TG , class TL , int N>
std::ostream &	Dune::operator<< (std::ostream &os, const ParallelIndexSet< TG, TL, N > &indexSet)
	Print an index set. More...

	Dune::GlobalLookupIndexSet< I >::GlobalLookupIndexSet (const ParallelIndexSet &indexset, std::size_t size)
	Constructor. More...

	Dune::GlobalLookupIndexSet< I >::GlobalLookupIndexSet (const ParallelIndexSet &indexset)
	Constructor. More...

	Dune::GlobalLookupIndexSet< I >::~GlobalLookupIndexSet ()
	Destructor.

const IndexPair &	Dune::GlobalLookupIndexSet< I >::operator[] (const GlobalIndex &global) const
	Find the index pair with a specific global id. More...

const IndexPair *	Dune::GlobalLookupIndexSet< I >::pair (const std::size_t &local) const
	Get the index pair corresponding to a local index.

const_iterator	Dune::GlobalLookupIndexSet< I >::begin () const
	Get an iterator over the indices positioned at the first index. More...

const_iterator	Dune::GlobalLookupIndexSet< I >::end () const
	Get an iterator over the indices positioned after the last index. More...

int	Dune::GlobalLookupIndexSet< I >::seqNo () const
	Get the internal sequence number. More...

size_t	Dune::GlobalLookupIndexSet< I >::size () const
	Get the total number (public and nonpublic) indices. More...

	Dune::IndicesSyncer< T >::IndicesSyncer (ParallelIndexSet &indexSet, RemoteIndices &remoteIndices)
	Constructor. More...

void	Dune::IndicesSyncer< T >::sync ()
	Sync the index set. More...

template<typename T1 >
void	Dune::IndicesSyncer< T >::sync (T1 &numberer)
	Synce the index set and assign local numbers to new indices. More...

std::size_t	Dune::IndicesSyncer< T >::DefaultNumberer::operator() (const GlobalIndex &global)
	Provide the lcoal index, always std::numeric_limits<size_t>::max() More...

	Dune::IndicesSyncer< T >::Iterators::Iterators (RemoteIndexList &remoteIndices, GlobalIndexList &globalIndices, BoolList &booleans)
	Constructor. More...

	Dune::IndicesSyncer< T >::Iterators::Iterators ()
	Default constructor.

Iterators &	Dune::IndicesSyncer< T >::Iterators::operator++ ()
	Increment all iteraors.

void	Dune::IndicesSyncer< T >::Iterators::insert (const RemoteIndex &index, const std::pair< GlobalIndex, Attribute > &global)
	Insert a new remote index to the underlying remote index list. More...

RemoteIndex &	Dune::IndicesSyncer< T >::Iterators::remoteIndex () const
	Get the remote index at current position. More...

std::pair< GlobalIndex, Attribute > &	Dune::IndicesSyncer< T >::Iterators::globalIndexPair () const
	Get the global index of the remote index at current position. More...

bool	Dune::IndicesSyncer< T >::Iterators::isOld () const
	Was this entry already in the remote index list before the sync process? More...

void	Dune::IndicesSyncer< T >::Iterators::reset (RemoteIndexList &remoteIndices, GlobalIndexList &globalIndices, BoolList &booleans)
	Reset all the underlying iterators. More...

bool	Dune::IndicesSyncer< T >::Iterators::isNotAtEnd () const
	Are we not at the end of the list? More...

bool	Dune::IndicesSyncer< T >::Iterators::isAtEnd () const
	Are we at the end of the list? More...

template<typename T , typename A , typename A1 >
void	Dune::storeGlobalIndicesOfRemoteIndices (std::map< int, SLList< std::pair< typename T::GlobalIndex, typename T::LocalIndex::Attribute >, A > > &globalMap, const RemoteIndices< T, A1 > &remoteIndices)
	Stores the corresponding global indices of the remote index information. More...

template<typename T , typename A , typename A1 >
void	Dune::repairLocalIndexPointers (std::map< int, SLList< std::pair< typename T::GlobalIndex, typename T::LocalIndex::Attribute >, A > > &globalMap, RemoteIndices< T, A1 > &remoteIndices, const T &indexSet)
	Repair the pointers to the local indices in the remote indices. More...

template<class T >
std::ostream &	Dune::operator<< (std::ostream &os, const ParallelLocalIndex< T > &index)
	Print the local index to a stream. More...

template<class R , class T1 , class T2 , class Op , bool send>
void	Dune::InterfaceBuilder::buildInterface (const R &remoteIndices, const T1 &sourceFlags, const T2 &destFlags, Op &functor) const
	Builds the interface between remote processes. More...

MPI_Comm	Dune::Interface::communicator () const
	Get the MPI Communicator.

const InformationMap &	Dune::Interface::interfaces () const
	Get information about the interfaces. More...

InformationMap &	Dune::Interface::interfaces ()
	Get information about the interfaces. More...

void	Dune::Interface::print () const
	Print the interface to std::out for debugging.

template<typename R , typename T1 , typename T2 >
void	Dune::Interface::build (const R &remoteIndices, const T1 &sourceFlags, const T2 &destFlags)
	Builds the interface. More...

void	Dune::Interface::free ()
	Frees memory allocated during the build.

virtual	Dune::Interface::~Interface ()
	Destructor.

const std::size_t &	Dune::LocalIndex::local () const
	get the local index. More...

	Dune::LocalIndex::operator std::size_t () const
	Convert to the local index represented by an int.

LocalIndex &	Dune::LocalIndex::operator= (std::size_t index)
	Assign a new local index. More...

LocalIndexState	Dune::LocalIndex::state () const
	Get the state. More...

void	Dune::LocalIndex::setState (LocalIndexState state)
	Set the state. More...

	Dune::ParallelLocalIndex< T >::ParallelLocalIndex (const Attribute &attribute, bool isPublic)
	Constructor. More...

	Dune::ParallelLocalIndex< T >::ParallelLocalIndex (size_t localIndex, const Attribute &attribute, bool isPublic=true)
	Constructor. More...

	Dune::ParallelLocalIndex< T >::ParallelLocalIndex ()
	Parameterless constructor. More...

const Attribute	Dune::ParallelLocalIndex< T >::attribute () const
	Get the attribute of the index. More...

void	Dune::ParallelLocalIndex< T >::setAttribute (const Attribute &attribute)
	Set the attribute of the index. More...

size_t	Dune::ParallelLocalIndex< T >::local () const
	get the local index. More...

	Dune::ParallelLocalIndex< T >::operator size_t () const
	Convert to the local index represented by an int.

ParallelLocalIndex< Attribute > &	Dune::ParallelLocalIndex< T >::operator= (size_t index)
	Assign a new local index. More...

bool	Dune::ParallelLocalIndex< T >::isPublic () const
	Check whether the index might also be known other processes. More...

LocalIndexState	Dune::ParallelLocalIndex< T >::state () const
	Get the state. More...

void	Dune::ParallelLocalIndex< T >::setState (const LocalIndexState &state)
	Set the state. More...

void	Dune::Selection< TS, TG, TL, N >::setIndexSet (const ParallelIndexSet &indexset)
	Set the index set of the selection. More...

const_iterator	Dune::Selection< TS, TG, TL, N >::begin () const
	Get the index set we are a selection for. More...

const_iterator	Dune::Selection< TS, TG, TL, N >::end () const
	Get an iterator over the selected indices. More...

void	Dune::Selection< TS, TG, TL, N >::free ()
	Free allocated memory.

const_iterator	Dune::UncachedSelection< TS, TG, TL, N >::begin () const
	Get the index set we are a selection for. More...

const_iterator	Dune::UncachedSelection< TS, TG, TL, N >::end () const
	Get an iterator over the selected indices. More...

void	Dune::UncachedSelection< TS, TG, TL, N >::setIndexSet (const ParallelIndexSet &indexset)
	Set the index set of the selection. More...

Variables
int	Dune::IndicesSyncer< T >::MessageInformation::publish
	The number of indices we publish for the other process.

int	Dune::IndicesSyncer< T >::MessageInformation::pairs
	The number of pairs (attribute and process number) we publish to the neighbour process.

Detailed Description

Provides classes for syncing distributed indexed data structures.

In a parallel representation a container $x$, e.g. a plain C-array, cannot be stored with all entries on each process because of limited memory and efficiency reasons. Therefore it is represented by individual pieces $x_p$, $p=0, \ldots, P-1$, where $x_p$ is the piece stored on process $p$ of the $P$ processes participating in the calculation. Although the global representation of the container is not available on any process, a process $p$ needs to know how the entries of it's local piece $x_p$ correspond to the entries of the global container $x$, which would be used in a sequential program. In this module we present classes describing the mapping of the local pieces to the global view and the communication interfaces.

Parallel Index Sets

Form an abstract point of view a random access container $x: I \rightarrow K$ provides a mapping from an index set $I \subset N_0$ onto a set of objects $K$. Note that we do not require $I$ to be consecutive. The piece $x_p$ of the container $x$ stored on process $p$ is a mapping $x_p:I_p \rightarrow K$, where $I_p \subset I$. Due to efficiency the entries of $x_p$ should be stored in consecutive memory.

This means that for the local computation the data must be addressable by a consecutive index starting from $0$. When using adaptive discretisation methods there might be the need to reorder the indices after adding and/or deleting some of the discretisation points. Therefore this index does not have to be persistent. Further on we will call this index local index.

For the communication phases of our algorithms these locally stored entries must also be addressable by a global identifier to be able to store the received values tagged with the global identifiers at the correct local index in the consecutive local memory chunk. To ease the addition and removal of discretisation points this global identifier has to be persistent. Further on we will call this global identifier global index.

Classes to build the mapping are ParallelIndexSet and ParallelLocalIndex. As these just provide a mapping from the global index to the local index, the wrapper class GlobalLookupIndexSet facilitates the reverse lookup.

Remote Index Information

To setup communication between the processes every process needs to know what indices are also known to other processes and what attributes are attached to them on the remote side. This information is calculated and encapsulated in class RemoteIndices.

Communication

Based on the information about the distributed index sets, data independent interfaces between different sets of the index sets can be setup using the class Interface. For the actual communication data dependent communicators can be setup using BufferedCommunicator, DatatypeCommunicator VariableSizeCommunicator based on the interface information. In contrast to the former the latter is independent of the class Interface can work on a map from process number to a pair of index lists describing which local indices are send and received from that processs, respectively.

Typedef Documentation

◆ GlobalIndex

template<class TG , class TL >

typedef TG Dune::IndexPair< TG, TL >::GlobalIndex

the type of the global index.

This type has to provide at least a operator< for sorting.

◆ LocalIndex [1/2]

template<class TG , class TL >

typedef TL Dune::IndexPair< TG, TL >::LocalIndex

the type of the local index.

This class to provide the following functions:

LocalIndex operator=(int);
operator int() const;
LocalIndexState state() const;
void setState(LocalIndexState);

◆ LocalIndex [2/2]

template<typename TG , typename TL , int N = 100>

typedef TL Dune::ParallelIndexSet< TG, TL, N >::LocalIndex

The type of the local index, e.g. ParallelLocalIndex.

This class to provide the following functions:

LocalIndex operator=(int);
operator int() const;
LocalIndexState state() const;
void setState(LocalIndexState);

Enumeration Type Documentation

◆ anonymous enum

template<typename TG , typename TL , int N = 100>

anonymous enum

Enumerator

arraySize

The size of the individual arrays in the underlying ArrayList.

The default value is 100.

See also: ArrayList::size

◆ LocalIndexState

enum Dune::LocalIndexState

The states avaiable for the local indices.

See also: LocalIndex::state()

◆ ParallelIndexSetState

enum Dune::ParallelIndexSetState

The states the index set can be in.

See also: ParallelIndexSet::state_

Enumerator

GROUND

The default mode. Indicates that the index set is ready to be used.

RESIZE

Indicates that the index set is currently being resized.

Indicates that all previously deleted indices are now deleted.

CLEAN,

Indicates that the index set is currently being reordered.

REORDER

Function Documentation

◆ add() [1/2]

template<typename TG , typename TL , int N = 100>

void Dune::ParallelIndexSet< TG, TL, N >::add ( const GlobalIndex & global )

inline

Add an new index to the set.

The local index is created by the default constructor.

Parameters

global The globally unique id of the index.

Exceptions

InvalidState If index set is not in ParallelIndexSetState::RESIZE mode.

Referenced by Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::OwnerOverlapCopyCommunication().

◆ add() [2/2]

template<typename TG , typename TL , int N = 100>

void Dune::ParallelIndexSet< TG, TL, N >::add	(	const GlobalIndex &	global,
		const LocalIndex &	local
	)

inline

Add an new index to the set.

Parameters

global	The globally unique id of the index.
local	The local index.

Exceptions

InvalidState If index set is not in ParallelIndexSetState::RESIZE mode.

◆ at() [1/2]

template<typename TG , typename TL , int N = 100>

IndexPair & Dune::ParallelIndexSet< TG, TL, N >::at ( const GlobalIndex & global )

inline

Find the index pair with a specific global id.

This starts a binary search for the entry and therefore has complexity log(N).

Parameters

global The globally unique id of the pair.

Returns: The pair of indices for the id.

Exceptions

RangeError Thrown if the global id is not known.

◆ at() [2/2]

template<typename TG , typename TL , int N = 100>

const IndexPair & Dune::ParallelIndexSet< TG, TL, N >::at ( const GlobalIndex & global ) const

inline

Find the index pair with a specific global id.

This starts a binary search for the entry and therefore has complexity log(N).

Parameters

global The globally unique id of the pair.

Returns: The pair of indices for the id.

Exceptions

RangeError Thrown if the global id is not known.

◆ attribute()

template<class T >

const T Dune::ParallelLocalIndex< T >::attribute

inline

Get the attribute of the index.

Returns: The associated attribute.

◆ begin() [1/5]

template<typename TG , typename TL , int N = 100>

iterator Dune::ParallelIndexSet< TG, TL, N >::begin ( )

inline

Get an iterator over the indices positioned at the first index.

Returns: Iterator over the local indices.

Referenced by Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::dot(), Dune::graphRepartition(), Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::norm(), Dune::operator<<(), Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::OwnerOverlapCopyCommunication(), Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::project(), Dune::Selection< TS, TG, TL, N >::setIndexSet(), and Dune::storeMatrixMarket().

◆ begin() [2/5]

template<typename TG , typename TL , int N = 100>

const_iterator Dune::ParallelIndexSet< TG, TL, N >::begin ( ) const

inline

Get an iterator over the indices positioned at the first index.

Returns: Iterator over the local indices.

◆ begin() [3/5]

template<class I >

const_iterator Dune::GlobalLookupIndexSet::begin ( ) const

inline

Get an iterator over the indices positioned at the first index.

Returns: Iterator over the local indices.

◆ begin() [4/5]

template<typename TS , typename TG , typename TL , int N>

SelectionIterator< TS, TG, TL, N > Dune::UncachedSelection< TS, TG, TL, N >::begin

Get the index set we are a selection for.

Get an iterator over the selected indices.

Returns: An iterator positioned at the first selected index.

◆ begin() [5/5]

template<typename TS , typename TG , typename TL , int N>

uint32_t * Dune::Selection< TS, TG, TL, N >::begin

Get the index set we are a selection for.

Get an iterator over the selected indices.

Returns: An iterator positioned at the first selected index.

◆ beginResize()

template<typename TG , typename TL , int N = 100>

void Dune::ParallelIndexSet< TG, TL, N >::beginResize ( )

Indicate that the index set is to be resized.

Exceptions

InvalidState If index set was not in ParallelIndexSetState::GROUND mode.

Referenced by Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::OwnerOverlapCopyCommunication().

◆ build()

template<typename R , typename T1 , typename T2 >

void Dune::Interface::build	(	const R &	remoteIndices,
		const T1 &	sourceFlags,
		const T2 &	destFlags
	)

inline

Builds the interface.

The types T1 and T2 are classes representing a set of enumeration values of type Interface::Attribute. They have to provide a (static) method

bool contains(Attribute flag) const;

for checking whether the set contains a specific flag. This functionality is for example provided the classes EnumItem, EnumRange and Combine.

Parameters

remoteIndices	The indices known to remote processes.
sourceFlags	The set of flags marking indices we send from.
destFlags	The set of flags marking indices we receive for.

References Dune::Interface::communicator_.

◆ buildInterface()

template<class R , class T1 , class T2 , class Op , bool send>

void Dune::InterfaceBuilder::buildInterface	(	const R &	remoteIndices,
		const T1 &	sourceFlags,
		const T2 &	destFlags,
		Op &	functor
	)		const

protected

Builds the interface between remote processes.

The types T1 and T2 are classes representing a set of enumeration values of type InterfaceBuilder::Attribute. They have to provide a (static) method

bool contains(Attribute flag) const;

for checking whether the set contains a specific flag. This functionality is for example provided the classes EnumItem, EnumRange and Combine.

If the template parameter send is true the sending side of the interface will be built, otherwise the information for receiving will be built.

If the template parameter send is true we create interface for sending in a forward communication.

Parameters

remoteIndices	The indices known to remote processes.
sourceFlags	The set of flags marking source indices.
destFlags	The setof flags markig destination indices.
functor	A functor for callbacks. It should provide the following methods: // Reserve memory for the interface to processor proc. The interface // has to hold size entries void reserve(int proc, int size); // Add an entry to the interface // We will send/receive size entries at index local to process proc void add(int proc, int local);

References DUNE_THROW, and Dune::RemoteIndices< T, A >::end().

◆ end() [1/5]

template<typename TG , typename TL , int N = 100>

iterator Dune::ParallelIndexSet< TG, TL, N >::end ( )

inline

Get an iterator over the indices positioned after the last index.

Returns: Iterator over the local indices.

Referenced by Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::dot(), Dune::graphRepartition(), Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::norm(), Dune::operator<<(), Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::OwnerOverlapCopyCommunication(), Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::project(), Dune::Selection< TS, TG, TL, N >::setIndexSet(), and Dune::storeMatrixMarket().

◆ end() [2/5]

template<typename TG , typename TL , int N = 100>

const_iterator Dune::ParallelIndexSet< TG, TL, N >::end ( ) const

inline

Get an iterator over the indices positioned after the last index.

Returns: Iterator over the local indices.

◆ end() [3/5]

template<class I >

const_iterator Dune::GlobalLookupIndexSet::end ( ) const

inline

Get an iterator over the indices positioned after the last index.

Returns: Iterator over the local indices.

◆ end() [4/5]

template<typename TS , typename TG , typename TL , int N>

SelectionIterator< TS, TG, TL, N > Dune::UncachedSelection< TS, TG, TL, N >::end

Get an iterator over the selected indices.

Returns: An iterator positioned at the first selected index.

◆ end() [5/5]

template<typename TS , typename TG , typename TL , int N>

uint32_t * Dune::Selection< TS, TG, TL, N >::end

Get an iterator over the selected indices.

Returns: An iterator positioned at the first selected index.

◆ endResize()

template<typename TG , typename TL , int N = 100>

void Dune::ParallelIndexSet< TG, TL, N >::endResize ( )

Indicate that the resizing finishes.

Warning: Invalidates all pointers stored to the elements of this index set. The local indices will be ordered according to the global indices: Let $(g_i,l_i)_{i=0}^N $ be the set of all indices then $l_i < l_j$ if and only if $g_i < g_j$ for arbitrary $i \neq j$.

Exceptions

InvalidState If index set was not in ParallelIndexSetState::RESIZE mode.

Referenced by Dune::OwnerOverlapCopyCommunication< GlobalIdType, LocalIdType >::OwnerOverlapCopyCommunication().

◆ exists()

template<typename TG , typename TL , int N = 100>

bool Dune::ParallelIndexSet< TG, TL, N >::exists ( const GlobalIndex & global ) const

inline

Find the index pair with a specific global id.

This starts a binary search for the entry and therefore has complexity log(N).

Parameters

global The globally unique id of the pair.

Returns: The pair of indices for the id.

Exceptions

RangeError Thrown if the global id is not known.

◆ global()

template<class TG , class TL >

const GlobalIndex & Dune::IndexPair< TG, TL >::global ( ) const

inline

Get the global index.

Returns: The global index.

Referenced by Dune::RemoteIndexListModifier< T, A, mode >::insert().

◆ globalIndexPair()

template<typename T >

std::pair< typename IndicesSyncer< T >::GlobalIndex, typename IndicesSyncer< T >::Attribute > & Dune::IndicesSyncer< T >::Iterators::globalIndexPair

inline

Get the global index of the remote index at current position.

Returns: The current global index.

◆ GlobalLookupIndexSet() [1/2]

template<class I >

Dune::GlobalLookupIndexSet::GlobalLookupIndexSet ( const ParallelIndexSet & indexset )

Constructor.

Parameters

indexset The index set we want to be able to lookup the corresponding global index of a local index.

◆ GlobalLookupIndexSet() [2/2]

template<class I >

Dune::GlobalLookupIndexSet< I >::GlobalLookupIndexSet	(	const ParallelIndexSet &	indexset,
		std::size_t	size
	)

Constructor.

Parameters

indexset	The index set we want to be able to lookup the corresponding global index of a local index.
size	The number of indices present, i.e. one more than the maximum local index.

◆ IndexPair() [1/2]

template<class TG , class TL >

Dune::IndexPair< TG, TL >::IndexPair ( const GlobalIndex & global )

Constructs a new Pair.

The local index will be 0.

Parameters

global The global index.

◆ IndexPair() [2/2]

template<class TG , class TL >

Dune::IndexPair< TG, TL >::IndexPair	(	const GlobalIndex &	global,
		const LocalIndex &	local
	)

Constructs a new Pair.

Parameters

global	The global index.
local	The local index.

◆ IndicesSyncer()

template<typename T >

Dune::IndicesSyncer< T >::IndicesSyncer	(	ParallelIndexSet &	indexSet,
		RemoteIndices &	remoteIndices
	)

Constructor.

The source as well as the target index set of the remote indices have to be the same as the provided index set.

Parameters

indexSet	The index set with the information of the locally present indices.
remoteIndices	The remoteIndices.

References Dune::RemoteIndices< T, A >::communicator().

◆ insert()

template<typename T >

void Dune::IndicesSyncer< T >::Iterators::insert	(	const RemoteIndex &	index,
		const std::pair< GlobalIndex, Attribute > &	global
	)

inline

Insert a new remote index to the underlying remote index list.

Parameters

index	The remote index.
global	The global index corresponding to the remote index.

◆ interfaces() [1/2]

std::map< int, std::pair< InterfaceInformation, InterfaceInformation > > & Dune::Interface::interfaces ( )

inlineprotected

Get information about the interfaces.

Returns: Map of the interfaces. The key of the map is the process number and the value is the information pair (first the send and then the receive information).

◆ interfaces() [2/2]

const std::map< int, std::pair< InterfaceInformation, InterfaceInformation > > & Dune::Interface::interfaces ( ) const

inline

Get information about the interfaces.

Returns: Map of the interfaces. The key of the map is the process number and the value is the information pair (first the send and then the receive information).

◆ isAtEnd()

template<typename T >

bool Dune::IndicesSyncer< T >::Iterators::isAtEnd

inline

Are we at the end of the list?

Returns: True if the iterators are positioned at the end of the list and the tail of the list respectively.

◆ isNotAtEnd()

template<typename T >

bool Dune::IndicesSyncer< T >::Iterators::isNotAtEnd

inline

Are we not at the end of the list?

Returns: True if the iterators are not positioned at the end of the list and the tail of the list respectively.

◆ isOld()

template<typename T >

bool Dune::IndicesSyncer< T >::Iterators::isOld

inline

Was this entry already in the remote index list before the sync process?

Returns: True if the current index wasalready in the remote index list before the sync process.

◆ isPublic()

template<class T >

bool Dune::ParallelLocalIndex< T >::isPublic

inline

Check whether the index might also be known other processes.

Returns: True if the index might be known to other processors.

◆ Iterators()

template<typename T >

Dune::IndicesSyncer< T >::Iterators::Iterators	(	RemoteIndexList &	remoteIndices,
		GlobalIndexList &	globalIndices,
		BoolList &	booleans
	)

Constructor.

Initializes all iterator to first entry and the one before the first entry, respectively.

Parameters

remoteIndices	The list of the remote indices.
globalIndices	The list of the coresponding global indices. This is needed because the the pointers to the local index will become invalid due to the merging of the index sets.
booleans	Whether the remote index was there before the sync process started.

◆ local() [1/4]

template<class TG , class TL >

LocalIndex & Dune::IndexPair< TG, TL >::local ( )

inline

Get the local index.

Returns: The local index.

◆ local() [2/4]

template<class TG , class TL >

const LocalIndex & Dune::IndexPair< TG, TL >::local ( ) const

inline

Get the local index.

Returns: The local index.

◆ local() [3/4]

const std::size_t & Dune::LocalIndex::local ( ) const

inline

get the local index.

Returns: The local index.

◆ local() [4/4]

template<class T >

size_t Dune::ParallelLocalIndex< T >::local

inline

get the local index.

Returns: The local index.

◆ markAsDeleted()

template<typename TG , typename TL , int N = 100>

void Dune::ParallelIndexSet< TG, TL, N >::markAsDeleted ( const iterator & position )

inline

Mark an index as deleted.

The index will be deleted during endResize().

Parameters

position An iterator at the position we want to delete.

Exceptions

InvalidState If index set is not in ParallelIndexSetState::RESIZE mode.

◆ operator()()

template<typename T >

std::size_t Dune::IndicesSyncer< T >::DefaultNumberer::operator() ( const GlobalIndex & global )

inline

Provide the lcoal index, always std::numeric_limits<size_t>::max()

Parameters

global The global index (ignored).

References Dune::Simd::Overloads::max().

◆ operator<<() [1/3]

template<class TG , class TL >

std::ostream & Dune::operator<<	(	std::ostream &	os,
		const IndexPair< TG, TL > &	pair
	)

inline

Print an index pair.

Parameters

os	The outputstream to print to.
pair	The index pair to print.

◆ operator<<() [2/3]

template<class TG , class TL , int N>

std::ostream & Dune::operator<<	(	std::ostream &	os,
		const ParallelIndexSet< TG, TL, N > &	indexSet
	)

inline

Print an index set.

Parameters

os	The outputstream to print to.
indexSet	The index set to print.

References Dune::ParallelIndexSet< TG, TL, N >::begin(), and Dune::ParallelIndexSet< TG, TL, N >::end().

◆ operator<<() [3/3]

template<class T >

std::ostream & Dune::operator<<	(	std::ostream &	os,
		const ParallelLocalIndex< T > &	index
	)

Print the local index to a stream.

Parameters

os	The output stream to print to.
index	The index to print.

◆ operator=() [1/2]

template<class T >

ParallelLocalIndex< T > & Dune::ParallelLocalIndex< T >::operator= ( size_t index )

inline

Assign a new local index.

Parameters

index The new local index.

◆ operator=() [2/2]

LocalIndex & Dune::LocalIndex::operator= ( std::size_t index )

inline

Assign a new local index.

Parameters

index The new local index.

◆ operator[]() [1/3]

template<typename TG , typename TL , int N = 100>

IndexPair & Dune::ParallelIndexSet< TG, TL, N >::operator[] ( const GlobalIndex & global )

inline

Find the index pair with a specific global id.

This starts a binary search for the entry and therefore has complexity log(N).

Parameters

global The globally unique id of the pair.

Returns: The pair of indices for the id.

Warning: If the global index is not in the set a wrong or even a null reference might be returned. To be save use the throwing alternative at.

◆ operator[]() [2/3]

template<typename TG , typename TL , int N = 100>

const IndexPair & Dune::ParallelIndexSet< TG, TL, N >::operator[] ( const GlobalIndex & global ) const

inline

Find the index pair with a specific global id.

This starts a binary search for the entry and therefore has complexity log(N).

Parameters

global The globally unique id of the pair.

Returns: The pair of indices for the id.

Warning: If the global index is not in the set a wrong or even a null reference might be returned. To be save use the throwing alternative at.

◆ operator[]() [3/3]

template<class I >

const IndexPair & Dune::GlobalLookupIndexSet::operator[] ( const GlobalIndex & global ) const

inline

Find the index pair with a specific global id.

This starts a binary search for the entry and therefore has complexity log(N). This method is forwarded to the underlying index set.

Parameters

global The globally unique id of the pair.

Returns: The pair of indices for the id.

Exceptions

RangeError Thrown if the global id is not known.

◆ ParallelLocalIndex() [1/3]

template<class T >

Dune::ParallelLocalIndex< T >::ParallelLocalIndex

Parameterless constructor.

Needed for use in container classes.

◆ ParallelLocalIndex() [2/3]

template<class T >

Dune::ParallelLocalIndex< T >::ParallelLocalIndex	(	const Attribute &	attribute,
		bool	isPublic
	)

Constructor.

The local index will be initialized to 0.

Parameters

attribute	The attribute of the index.
isPublic	True if the index might also be known to other processes.

◆ ParallelLocalIndex() [3/3]

template<class T >

Dune::ParallelLocalIndex< T >::ParallelLocalIndex	(	size_t	localIndex,
		const Attribute &	attribute,
		bool	isPublic = `true`
	)

Constructor.

Parameters

localIndex	The local index.
attribute	The attribute of the index.
isPublic	True if the index might also be known to other processes.

◆ remoteIndex()

template<typename T >

IndicesSyncer< T >::RemoteIndex & Dune::IndicesSyncer< T >::Iterators::remoteIndex

inline

Get the remote index at current position.

Returns: The current remote index.

◆ renumberLocal()

template<typename TG , typename TL , int N = 100>

void Dune::ParallelIndexSet< TG, TL, N >::renumberLocal ( )

inline

Renumbers the local index numbers.

After this function returns the indices are consecutively numbered beginning from 0. Let $(g_i,l_i)$, $(g_j,l_j)$ be two arbitrary index pairs with $g_i<g_j$ then after renumbering $l_i<l_j$ will hold.

◆ repairLocalIndexPointers()

template<typename T , typename A , typename A1 >

void Dune::repairLocalIndexPointers	(	std::map< int, SLList< std::pair< typename T::GlobalIndex, typename T::LocalIndex::Attribute >, A > > &	globalMap,
		RemoteIndices< T, A1 > &	remoteIndices,
		const T &	indexSet
	)

inline

Repair the pointers to the local indices in the remote indices.

Parameters

globalMap	The map of the process number to the list of global indices corresponding to the remote index list of the process.
remoteIndices	The known remote indices.
indexSet	The set of local indices of the current process.

◆ reset()

template<typename T >

void Dune::IndicesSyncer< T >::Iterators::reset	(	RemoteIndexList &	remoteIndices,
		GlobalIndexList &	globalIndices,
		BoolList &	booleans
	)

inline

Reset all the underlying iterators.

Position them to first list entry and the entry before the first entry respectively.

Parameters

remoteIndices	The list of the remote indices.
globalIndices	The list of the coresponding global indices. This is needed because the the pointers to the local index will become invalid due to the merging of the index sets.
booleans	Whether the remote index was there before the sync process started.

References Dune::SLList< T, A >::beginModify().

◆ seqNo() [1/2]

template<typename TG , typename TL , int N = 100>

int Dune::ParallelIndexSet< TG, TL, N >::seqNo ( ) const

inline

Get the internal sequence number.

Is initially 0 is incremented for each resize.

Returns: The sequence number.

◆ seqNo() [2/2]

template<class I >

int Dune::GlobalLookupIndexSet::seqNo ( ) const

inline

Get the internal sequence number.

Is initially 0 is incremented for each resize.

Returns: The sequence number.

◆ setAttribute()

template<class T >

void Dune::ParallelLocalIndex< T >::setAttribute ( const Attribute & attribute )

inline

Set the attribute of the index.

Parameters

attribute The associated attribute.

◆ setIndexSet() [1/2]

template<typename TS , typename TG , typename TL , int N>

void Dune::UncachedSelection< TS, TG, TL, N >::setIndexSet ( const ParallelIndexSet & indexset )

Set the index set of the selection.

Parameters

indexset The index set to use.

◆ setIndexSet() [2/2]

template<typename TS , typename TG , typename TL , int N>

void Dune::Selection< TS, TG, TL, N >::setIndexSet ( const ParallelIndexSet & indexset )

inline

Set the index set of the selection.

Parameters

indexset The index set to use.

References Dune::ParallelIndexSet< TG, TL, N >::begin(), and Dune::ParallelIndexSet< TG, TL, N >::end().

◆ setLocal()

template<class TG , class TL >

void Dune::IndexPair< TG, TL >::setLocal ( int index )

inline

Set the local index.

Parameters

index The index to set it to.

◆ setState() [1/2]

template<class T >

void Dune::ParallelLocalIndex< T >::setState ( const LocalIndexState & state )

inline

Set the state.

Parameters

state The state to set.

◆ setState() [2/2]

void Dune::LocalIndex::setState ( LocalIndexState state )

inline

Set the state.

Parameters

state The state to set.

References Dune::LocalIndex::state().

◆ size() [1/2]

template<typename TG , typename TL , int N = 100>

size_t Dune::ParallelIndexSet< TG, TL, N >::size ( ) const

inline

Get the total number (public and nonpublic) indices.

Returns: The total number (public and nonpublic) indices.

Referenced by Dune::graphRepartition().

◆ size() [2/2]

template<class I >

size_t Dune::GlobalLookupIndexSet::size ( ) const

inline

Get the total number (public and nonpublic) indices.

Returns: The total number (public and nonpublic) indices.

◆ state() [1/3]

template<typename TG , typename TL , int N = 100>

const ParallelIndexSetState & Dune::ParallelIndexSet< TG, TL, N >::state ( )

inline

Get the state the index set is in.

Returns: The state of the index set.

◆ state() [2/3]

LocalIndexState Dune::LocalIndex::state ( ) const

inline

Get the state.

Returns: The state.

Referenced by Dune::LocalIndex::setState().

◆ state() [3/3]

template<class T >

LocalIndexState Dune::ParallelLocalIndex< T >::state

inline

Get the state.

Returns: The state.

◆ storeGlobalIndicesOfRemoteIndices()

template<typename T , typename A , typename A1 >

void Dune::storeGlobalIndicesOfRemoteIndices	(	std::map< int, SLList< std::pair< typename T::GlobalIndex, typename T::LocalIndex::Attribute >, A > > &	globalMap,
		const RemoteIndices< T, A1 > &	remoteIndices
	)

Stores the corresponding global indices of the remote index information.

Whenever a ParallelIndexSet is resized all RemoteIndices that use it will be invalided as the pointers to the index set are invalid after calling ParallelIndexSet::Resize() One can rebuild them by storing the global indices in a map with this function and later repairing the pointers by calling repairLocalIndexPointers.

Warning: The RemoteIndices class has to be build with the same index set for both the sending and receiving side

Parameters

globalMap	Map to store the corresponding global indices in.
remoteIndices	The remote index information we need to store the corresponding global indices of.
indexSet	The index set that is for both the sending and receiving side of the remote index information.

◆ sync() [1/2]

template<typename T >

void Dune::IndicesSyncer< T >::sync

inline

Sync the index set.

Computes the missing indices in the local and the remote index list and adds them. No global communication is necessary! All indices added to the index will become the local index std::numeric_limits<size_t>::max()

References Dune::IndicesSyncer< T >::sync().

Referenced by Dune::IndicesSyncer< T >::sync().

◆ sync() [2/2]

template<typename T >

template<typename T1 >

void Dune::IndicesSyncer< T >::sync ( T1 & numberer )

Synce the index set and assign local numbers to new indices.

Computes the missing indices in the local and the remote index list and adds them. No global communication is necessary!

Parameters

numberer Functor providing the local indices for the added global indices. has to provide a function size_t operator()(const TG& global) that provides the local index to a global one. It will be called for ascending global indices.

References Dune::SLList< T, A >::begin(), Dune::RemoteIndices< T, A >::begin(), Dune::dverb, Dune::SLList< T, A >::end(), Dune::RemoteIndices< T, A >::end(), Dune::Simd::Overloads::max(), Dune::RemoteIndices< T, A >::neighbours(), and Dune::SLList< T, A >::push_back().

Files

Classes

Typedefs

Enumerations

Functions

Variables

Detailed Description

Parallel Index Sets

Remote Index Information

Communication

Typedef Documentation

◆ GlobalIndex

◆ LocalIndex [1/2]

◆ LocalIndex [2/2]

Enumeration Type Documentation

◆ anonymous enum

◆ LocalIndexState

◆ ParallelIndexSetState

Function Documentation

◆ add() [1/2]

◆ add() [2/2]

◆ at() [1/2]

◆ at() [2/2]

◆ attribute()

◆ begin() [1/5]

◆ begin() [2/5]

◆ begin() [3/5]

◆ begin() [4/5]

◆ begin() [5/5]

◆ beginResize()

◆ build()

◆ buildInterface()

◆ end() [1/5]

◆ end() [2/5]

◆ end() [3/5]

◆ end() [4/5]

◆ end() [5/5]

◆ endResize()

◆ exists()

◆ global()

◆ globalIndexPair()

◆ GlobalLookupIndexSet() [1/2]

◆ GlobalLookupIndexSet() [2/2]

◆ IndexPair() [1/2]

◆ IndexPair() [2/2]

◆ IndicesSyncer()

◆ insert()

◆ interfaces() [1/2]

◆ interfaces() [2/2]

◆ isAtEnd()

◆ isNotAtEnd()

◆ isOld()

◆ isPublic()

◆ Iterators()

◆ local() [1/4]

◆ local() [2/4]

◆ local() [3/4]

◆ local() [4/4]

◆ markAsDeleted()

◆ operator()()

◆ operator<<() [1/3]

◆ operator<<() [2/3]

◆ operator<<() [3/3]

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ operator[]() [1/3]

◆ operator[]() [2/3]

◆ operator[]() [3/3]

◆ ParallelLocalIndex() [1/3]

◆ ParallelLocalIndex() [2/3]

◆ ParallelLocalIndex() [3/3]

◆ remoteIndex()

◆ renumberLocal()

◆ repairLocalIndexPointers()

◆ reset()

◆ seqNo() [1/2]

◆ seqNo() [2/2]

◆ setAttribute()

◆ setIndexSet() [1/2]

◆ setIndexSet() [2/2]