Backward transform operator using matrix free operators. More...

Inheritance diagram for Nektar::Collections::BwdTrans_MatrixFree:

Public Member Functions
	~BwdTrans_MatrixFree () final=default

void	operator() (const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output0, Array< OneD, NekDouble > &output1, Array< OneD, NekDouble > &output2, Array< OneD, NekDouble > &wsp) final
	Perform operation.

void	operator() (int dir, const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output, Array< OneD, NekDouble > &wsp) final

Public Member Functions inherited from Nektar::Collections::Operator
	Operator (std::vector< LocalRegions::ExpansionSharedPtr > pCollExp, std::shared_ptr< CoalescedGeomData > GeomData, StdRegions::FactorMap factors)
	Constructor.

virtual	~Operator ()=default

virtual COLLECTIONS_EXPORT void	UpdateFactors (StdRegions::FactorMap factors)
	Update the supplied factor map.

virtual COLLECTIONS_EXPORT void	UpdateVarcoeffs (StdRegions::VarCoeffMap &varcoeffs)
	Update the supplied variable coefficients.

unsigned int	GetWspSize ()
	Get the size of the required workspace.

unsigned int	GetNumElmt ()
	Get number of elements.

StdRegions::StdExpansionSharedPtr	GetExpSharedPtr ()
	Get expansion pointer.

unsigned int	GetInputSize (void)

unsigned int	GetOutputSize (void)

unsigned int	GetPhysSize (void)

unsigned int	GetCoeffSize (void)

Private Member Functions
	BwdTrans_MatrixFree (vector< LocalRegions::ExpansionSharedPtr > pCollExp, CoalescedGeomDataSharedPtr pGeomData, StdRegions::FactorMap factors)

Private Member Functions inherited from Nektar::Collections::MatrixFreeBase
	MatrixFreeBase ()=default

	MatrixFreeBase (const unsigned int nIn, const unsigned int nOut, const unsigned int nCollSize)

Private Attributes
std::shared_ptr< MatrixFree::BwdTrans >	m_oper

Private Attributes inherited from Nektar::Collections::MatrixFreeBase
bool	m_isPadded {false}
	flag for padding

unsigned int	m_nElmtPad
	size after padding

unsigned int	m_nIn
	actural size of input array

unsigned int	m_nOut
	actural size of output array

Additional Inherited Members
Protected Member Functions inherited from Nektar::Collections::BwdTrans_Helper
	BwdTrans_Helper ()

Protected Attributes inherited from Nektar::Collections::Operator
bool	m_isDeformed

StdRegions::StdExpansionSharedPtr	m_stdExp

unsigned int	m_numElmt
	number of elements that the operator is applied on

unsigned int	m_nqe

unsigned int	m_wspSize

unsigned int	m_inputSize
	number of modes or quadrature points that are passed as input to an operator

unsigned int	m_outputSize
	number of modes or quadrature points that are taken as output from an operator

Detailed Description

Backward transform operator using matrix free operators.

Definition at line 160 of file BwdTrans.cpp.

Constructor & Destructor Documentation

◆ ~BwdTrans_MatrixFree()

Nektar::Collections::BwdTrans_MatrixFree::~BwdTrans_MatrixFree ( )

finaldefault

◆ BwdTrans_MatrixFree()

Nektar::Collections::BwdTrans_MatrixFree::BwdTrans_MatrixFree	(	vector< LocalRegions::ExpansionSharedPtr >	pCollExp,
		CoalescedGeomDataSharedPtr	pGeomData,
		StdRegions::FactorMap	factors
	)

inlineprivate

Definition at line 190 of file BwdTrans.cpp.

        : Operator(pCollExp, pGeomData, factors), BwdTrans_Helper(),
          MatrixFreeBase(pCollExp[0]->GetNcoeffs(), pCollExp[0]->GetTotPoints(),
                         pCollExp.size())
    {
        // Basis vector.
        const auto dim = pCollExp[0]->GetShapeDimension();
        std::vector<LibUtilities::BasisSharedPtr> basis(dim);
        for (auto i = 0; i < dim; ++i)
        {
            basis[i] = pCollExp[0]->GetBasis(i);
        }
 
        // Get shape type
        auto shapeType = pCollExp[0]->DetShapeType();
 
        // Generate operator string and create operator.
        std::string op_string = "BwdTrans";
        op_string += MatrixFree::GetOpstring(shapeType, false);
        auto oper = MatrixFree::GetOperatorFactory().CreateInstance(
            op_string, basis, pCollExp.size());
 
        oper->SetUpBdata(basis);
 
        m_oper = std::dynamic_pointer_cast<MatrixFree::BwdTrans>(oper);
        ASSERTL0(m_oper, "Failed to cast pointer.");
    }

References ASSERTL0, and m_oper.

Member Function Documentation

◆ operator()() [1/2]

void Nektar::Collections::BwdTrans_MatrixFree::operator()	(	const Array< OneD, const NekDouble > &	input,
		Array< OneD, NekDouble > &	output0,
		Array< OneD, NekDouble > &	output1,
		Array< OneD, NekDouble > &	output2,
		Array< OneD, NekDouble > &	wsp
	)

inlinefinalvirtual

Perform operation.

Implements Nektar::Collections::Operator.

Definition at line 169 of file BwdTrans.cpp.

    {
        (*m_oper)(input, output0);
    }

◆ operator()() [2/2]

void Nektar::Collections::BwdTrans_MatrixFree::operator()	(	int	dir,
		const Array< OneD, const NekDouble > &	input,
		Array< OneD, NekDouble > &	output,
		Array< OneD, NekDouble > &	wsp
	)

inlinefinalvirtual

Implements Nektar::Collections::Operator.

Definition at line 178 of file BwdTrans.cpp.

    {
        NEKERROR(ErrorUtil::efatal,
                 "BwdTrans_MatrixFree: Not valid for this operator.");
    }

References Nektar::ErrorUtil::efatal, and NEKERROR.

Member Data Documentation

◆ m_oper

std::shared_ptr<MatrixFree::BwdTrans> Nektar::Collections::BwdTrans_MatrixFree::m_oper

private

Definition at line 188 of file BwdTrans.cpp.

Referenced by BwdTrans_MatrixFree().

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members