matrixredistribute.hh File Reference

Functionality for redistributing a sparse matrix. More...

#include <memory>
#include "repartition.hh"
#include <dune/common/exceptions.hh>
#include <dune/common/parallel/indexset.hh>
#include <dune/istl/owneroverlapcopy.hh>
#include <dune/istl/paamg/pinfo.hh>

Go to the source code of this file.

Classes
struct	Dune::CommMatrixRowSize< M, RI >
	Utility class to communicate and set the row sizes of a redistributed matrix. More...
struct	Dune::CommMatrixSparsityPattern< M, I >
	Utility class to communicate and build the sparsity pattern of a redistributed matrix. More...
struct	Dune::CommMatrixRow< M, I >
	Utility class for comunicating the matrix entries. More...

Functions
template<typename M , typename C >
void	Dune::redistributeMatrix (M &origMatrix, M &newMatrix, C &origComm, C &newComm, RedistributeInformation< C > &ri)
	Redistribute a matrix according to given domain decompositions. More...

Detailed Description

Functionality for redistributing a sparse matrix.

Author

Markus Blatt

Function Documentation

redistributeMatrix()

template<typename M , typename C >

void Dune::redistributeMatrix	(	M &	origMatrix,
		M &	newMatrix,
		C &	origComm,
		C &	newComm,
		RedistributeInformation< C > &	ri
	)

Redistribute a matrix according to given domain decompositions.

All the parameters for this function can be obtained by calling graphRepartition with the graph of the original matrix.

Parameters

origMatrix	The matrix on the original partitioning.
newMatrix	An empty matrix to store the new redistributed matrix in.
origComm	The parallel information of the original partitioning.
newComm	The parallel information of the new partitioning.
ri	The remote index information between the original and the new partitioning. Upon exit of this method it will be prepared for copying from owner to owner vertices for data redistribution.

Template Parameters

M	The matrix type. It is assumed to be sparse. E.g. BCRSMatrix.
C	The type of the parallel information, see OwnerOverlapCopyCommunication.