class storing a vector distributed over all the processors More...

#include <DistributedVector.hxx>

Inheritance diagram for Seldon::DistributedVector< T, Allocator >:

Public Member Functions
	DistributedVector ()
	default constructor

	DistributedVector (const IVect &rows, const MPI_Comm &comm)
	Constructor taking overlapped rows. More...

	DistributedVector (const DistributedVector< T, Allocator > &V)
	Copy constructor.

void	SetOverlapRow (const IVect &rows, const MPI_Comm &comm)
	sets overlapped rows and MPI communicator

int	GetNbOverlap () const
	returns the number of rows already counted

int	GetOverlapRow (int i) const
	returns an overlapped row number

const MPI_Comm &	GetCommunicator () const
	returns communicator

void	SetCommunicator (const MPI_Comm &comm)
	sets communicator

Protected Attributes
IVect *	OverlapRowNumbers
	row numbers shared with other processors More...

MPI_Comm	comm_
	MPI communicator grouping processors involved in the computation.

Detailed Description

template<class T, class Allocator = typename SeldonDefaultAllocator<VectFull, T>::allocator>
class Seldon::DistributedVector< T, Allocator >

class storing a vector distributed over all the processors

This class is useful when some rows of the vector are shared by several processors. Functions DotProd, DotProdConj and Norm2 are overloaded in order to take into account this overlap.

Definition at line 33 of file DistributedVector.hxx.

Constructor & Destructor Documentation

◆ DistributedVector()

template<class T , class Allocator >

Seldon::DistributedVector< T, Allocator >::DistributedVector	(	const IVect &	rows,
		const MPI_Comm &	comm
	)

inline

Constructor taking overlapped rows.

In the array rows, you store all the row numbers which are already counted in another processor. For example : if processor 0 contains rows (0, 3, 5, 7, 8) if processor 1 contains rows (0, 1, 2, 4, 5, 6) Then you can set OverlapRowNumbers empty on processor 0, and equal to (0, 5) on processor 1. If there is no row shared by processors, the array rows will be empty for each processor

Definition at line 47 of file DistributedVectorInline.cxx.

Member Data Documentation

◆ OverlapRowNumbers

template<class T , class Allocator = typename SeldonDefaultAllocator<VectFull, T>::allocator>

IVect* Seldon::DistributedVector< T, Allocator >::OverlapRowNumbers

protected

row numbers shared with other processors

In this array, you store all the row numbers which are already counted in another processor. For example : if processor 0 contains rows (0, 3, 5, 7, 8) if processor 1 contains rows (0, 1, 2, 4, 5, 6) Then you can set OverlapRowNumbers empty on processor 0, and equal to (0, 5) on processor 1

Definition at line 46 of file DistributedVector.hxx.

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

vector/DistributedVector.hxx
vector/DistributedVectorInline.cxx

Public Member Functions