TNL::Containers::DistributedArrayView< Value, Device, Index > Class Template Reference

Distributed array view. More...

#include <TNL/Containers/DistributedArrayView.h>

Collaboration diagram for TNL::Containers::DistributedArrayView< Value, Device, Index >:

Public Types
using	ConstLocalViewType = Containers::ArrayView< std::add_const_t< Value >, Device, Index >
using	ConstViewType = DistributedArrayView< std::add_const_t< Value >, Device, Index >
using	DeviceType = Device
using	IndexType = Index
using	LocalRangeType = Subrange< Index >
using	LocalViewType = Containers::ArrayView< Value, Device, Index >
template<typename _Value , typename _Device = Device, typename _Index = Index>
using	Self = DistributedArrayView< _Value, _Device, _Index >
	A template which allows to quickly obtain a DistributedArrayView type with changed template parameters.
using	SynchronizerType = ByteArraySynchronizer< DeviceType, IndexType >
using	ValueType = Value
using	ViewType = DistributedArrayView< Value, Device, Index >

Public Member Functions
	DistributedArrayView (const DistributedArrayView &)=default
template<typename Value_ >
	DistributedArrayView (const DistributedArrayView< Value_, Device, Index > &)
	DistributedArrayView (const LocalRangeType &localRange, IndexType ghosts, IndexType globalSize, MPI::Comm communicator, LocalViewType localData)
	DistributedArrayView (DistributedArrayView &&) noexcept=default
void	bind (const LocalRangeType &localRange, IndexType ghosts, IndexType globalSize, const MPI::Comm &communicator, LocalViewType localData)
void	bind (DistributedArrayView view)
template<typename Value_ >
void	bind (Value_ *data, IndexType localSize)
void	copyFromGlobal (ConstLocalViewType globalArray)
bool	empty () const
template<typename Function >
void	forElements (IndexType begin, IndexType end, Function &&f)
	Process the lambda function f for each array element in interval [ begin, end).
template<typename Function >
void	forElements (IndexType begin, IndexType end, Function &&f) const
	Process the lambda function f for each array element in interval [ begin, end) for constant instances of the array.
const MPI::Comm &	getCommunicator () const
ConstLocalViewType	getConstLocalView () const
ConstLocalViewType	getConstLocalViewWithGhosts () const
ConstViewType	getConstView () const
	Returns a non-modifiable view of the array view.
ValueType	getElement (IndexType i) const
IndexType	getGhosts () const
const LocalRangeType &	getLocalRange () const
LocalViewType	getLocalView ()
LocalViewType	getLocalViewWithGhosts ()
IndexType	getSize () const
std::shared_ptr< SynchronizerType >	getSynchronizer () const
int	getValuesPerElement () const
ViewType	getView ()
	Returns a modifiable view of the array view.
void	loadFromGlobalFile (const String &fileName, bool allowCasting=false)
void	loadFromGlobalFile (File &file, bool allowCasting=false)
template<typename Array >
bool	operator!= (const Array &array) const
template<typename Array , typename... , typename = std::enable_if_t< HasSubscriptOperator< Array >::value >>
DistributedArrayView &	operator= (const Array &array)
template<typename Array , typename... , typename >
DistributedArrayView< Value, Device, Index > &	operator= (const Array &array)
DistributedArrayView &	operator= (const DistributedArrayView &view)
DistributedArrayView &	operator= (DistributedArrayView &&) noexcept=default
template<typename Array >
bool	operator== (const Array &array) const
__cuda_callable__ ValueType &	operator[] (IndexType i)
__cuda_callable__ const ValueType &	operator[] (IndexType i) const
void	reset ()
void	setElement (IndexType i, ValueType value)
void	setSynchronizer (std::shared_ptr< SynchronizerType > synchronizer, int valuesPerElement=1)
void	setValue (ValueType value)
void	startSynchronization ()
void	waitForSynchronization () const

Protected Attributes
MPI::Comm	communicator = MPI_COMM_NULL
IndexType	ghosts = 0
IndexType	globalSize = 0
LocalViewType	localData
LocalRangeType	localRange
std::shared_ptr< SynchronizerType >	synchronizer = nullptr
int	valuesPerElement = 1

Detailed Description

template<typename Value, typename Device = Devices::Host, typename Index = int>
class TNL::Containers::DistributedArrayView< Value, Device, Index >

Distributed array view.

Member Function Documentation

forElements() [1/2]

template<typename Value , typename Device , typename Index >

template<typename Function >

void TNL::Containers::DistributedArrayView< Value, Device, Index >::forElements	(	IndexType	begin,
		IndexType	end,
		Function &&	f )

Process the lambda function f for each array element in interval [ begin, end).

The lambda function is supposed to be declared as

f( IndexType elementIdx, ValueType& elementValue )

where

• elementIdx is an index of the array element being currently processed
• elementValue is a value of the array element being currently processed

This is performed at the same place where the array is allocated, i.e. it is efficient even on GPU.

Parameters

begin	The beginning of the array elements interval.
end	The end of the array elements interval.
f	The lambda function to be processed.

forElements() [2/2]

template<typename Value , typename Device , typename Index >

template<typename Function >

void TNL::Containers::DistributedArrayView< Value, Device, Index >::forElements	(	IndexType	begin,
		IndexType	end,
		Function &&	f ) const

Process the lambda function f for each array element in interval [ begin, end) for constant instances of the array.

The lambda function is supposed to be declared as

f( IndexType elementIdx, const ValueType& elementValue )

where

• elementIdx is an index of the array element being currently processed
• elementValue is a value of the array element being currently processed

This is performed at the same place where the array is allocated, i.e. it is efficient even on GPU.

Parameters

begin	The beginning of the array elements interval.
end	The end of the array elements interval.
f	The lambda function to be processed.

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

• src/TNL/Containers/DistributedArrayView.h
• src/TNL/Containers/DistributedArrayView.hpp