A derived class of OperatorContext to encapsulate the action of a discrete operator on vectors, matrices, etc. More...

#include <RayleighRitzEigenSolver.h>

Collaboration diagram for dftefe::linearAlgebra::RayleighRitzEigenSolver< ValueTypeOperator, ValueTypeOperand, memorySpace >:

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Public Types
using	ValueType = blasLapack::scalar_type< ValueTypeOperator, ValueTypeOperand >
	define ValueType as the superior (bigger set) of the ValueTypeOperator and ValueTypeOperand (e.g., between double and complex<double>, complex<double> is the bigger set) More...

using	RealType = blasLapack::real_type< ValueType >

using	OpContext = OperatorContext< ValueTypeOperator, ValueTypeOperand, memorySpace >

Public Member Functions
	RayleighRitzEigenSolver (const size_type eigenVectorBatchSize, const ElpaScalapackManager &elpaScala, std::shared_ptr< const utils::mpi::MPIPatternP2P< memorySpace > > mpiPatternP2P, std::shared_ptr< LinAlgOpContext< memorySpace > > linAlgOpContext, const bool useScalpack=true)
	Constructor. More...

	~RayleighRitzEigenSolver ()=default
	Default Destructor. More...

EigenSolverError	solve (const OpContext &A, MultiVector< ValueTypeOperand, memorySpace > &X, std::vector< RealType > &eigenValues, MultiVector< ValueType, memorySpace > &eigenVectors, bool computeEigenVectors=false)

EigenSolverError	solve (const OpContext &A, const OpContext &B, MultiVector< ValueTypeOperand, memorySpace > &X, std::vector< RealType > &eigenValues, MultiVector< ValueType, memorySpace > &eigenVectors, bool computeEigenVectors=false)

Private Member Functions
void	computeXTransOpX (MultiVector< ValueTypeOperand, memorySpace > &X, utils::MemoryStorage< ValueType, memorySpace > &S, const OpContext &Op, const bool &useBatched=true)

void	computeXTransOpX (MultiVector< ValueTypeOperand, memorySpace > &X, const std::shared_ptr< const ProcessGrid > &processGrid, ScaLAPACKMatrix< ValueType > &overlapMatPar, const OpContext &Op)

Private Attributes
std::shared_ptr< MultiVector< ValueType, memorySpace > >	d_XinBatchSmall

std::shared_ptr< MultiVector< ValueType, memorySpace > >	d_XinBatch

std::shared_ptr< MultiVector< ValueType, memorySpace > >	d_XoutBatchSmall

std::shared_ptr< MultiVector< ValueType, memorySpace > >	d_XoutBatch

size_type	d_batchSizeSmall

const size_type	d_eigenVecBatchSize

const ElpaScalapackManager *	d_elpaScala

const bool	d_useELPA

const bool	d_useScalapack

Detailed Description

template<typename ValueTypeOperator, typename ValueTypeOperand, utils::MemorySpace memorySpace>
class dftefe::linearAlgebra::RayleighRitzEigenSolver< ValueTypeOperator, ValueTypeOperand, memorySpace >

A derived class of OperatorContext to encapsulate the action of a discrete operator on vectors, matrices, etc.

Template Parameters

ValueTypeOperator	The datatype (float, double, complex<double>, etc.) for the underlying operator
ValueTypeOperand	The datatype (float, double, complex<double>, etc.) of the vector, matrices, etc. on which the operator will act
memorySpace	The meory sapce (HOST, DEVICE, HOST_PINNED, etc.) in which the data of the operator and its operands reside