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. More...

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< StdRegions::StdExpansionSharedPtr > pCollExp, std::shared_ptr< CoalescedGeomData > GeomData, StdRegions::FactorMap factors)
	Constructor. More...

virtual	~Operator ()=default

virtual COLLECTIONS_EXPORT void	operator() (const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output0, Array< OneD, NekDouble > &output1, Array< OneD, NekDouble > &output2, Array< OneD, NekDouble > &wsp=NullNekDouble1DArray)=0
	Perform operation. More...

virtual COLLECTIONS_EXPORT void	operator() (int dir, const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output, Array< OneD, NekDouble > &wsp=NullNekDouble1DArray)=0

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

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

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

unsigned int	GetNumElmt ()
	Get number of elements. More...

StdRegions::StdExpansionSharedPtr	GetExpSharedPtr ()
	Get expansion pointer. More...

unsigned int	GetInputSize (bool defaultIn=true)

unsigned int	GetOutputSize (bool defaultOut=true)

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

Private Member Functions inherited from Nektar::Collections::MatrixFreeOneInOneOut
	MatrixFreeOneInOneOut (const unsigned int nIn, const unsigned int nOut, const unsigned int nCollSize)
	Constructor. More...

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

Private Attributes inherited from Nektar::Collections::MatrixFreeOneInOneOut
Array< OneD, NekDouble >	m_input
	padded input/output vectors More...

Array< OneD, NekDouble >	m_output

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 More...

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 More...

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

unsigned int	m_inputSizeOther
	Number of modes or quadrature points, opposite to m_inputSize. More...

unsigned int	m_outputSizeOther
	Number of modes or quadrature points, opposite to m_outputSize. More...

Detailed Description

Backward transform operator using matrix free operators.

Definition at line 157 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< StdRegions::StdExpansionSharedPtr >	pCollExp,
		CoalescedGeomDataSharedPtr	pGeomData,
		StdRegions::FactorMap	factors
	)

inlineprivate

Definition at line 199 of file BwdTrans.cpp.

        : Operator(pCollExp, pGeomData, factors), BwdTrans_Helper(),
          MatrixFreeOneInOneOut(pCollExp[0]->GetStdExp()->GetNcoeffs(),
                                pCollExp[0]->GetStdExp()->GetTotPoints(),
                                pCollExp.size())
    {
        // Basis vector.
        const auto dim = pCollExp[0]->GetStdExp()->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]->GetStdExp()->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, m_nElmtPad);
 
        m_oper = std::dynamic_pointer_cast<MatrixFree::BwdTrans>(oper);
        ASSERTL0(m_oper, "Failed to cast pointer.");
    }

References ASSERTL0, Nektar::LibUtilities::NekFactory< tKey, tBase, tParam >::CreateInstance(), Nektar::Collections::GetOperatorFactory(), Nektar::Collections::MatrixFreeBase::m_nElmtPad, 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 166 of file BwdTrans.cpp.

    {
        if (m_isPadded)
        {
            // copy into padded vector
            Vmath::Vcopy(m_nIn, input, 1, m_input, 1);
            // call op
            (*m_oper)(m_input, m_output);
            // copy out of padded vector
            Vmath::Vcopy(m_nOut, m_output, 1, output0, 1);
        }
        else
        {
            (*m_oper)(input, output0);
        }
    }

References Nektar::Collections::MatrixFreeOneInOneOut::m_input, Nektar::Collections::MatrixFreeBase::m_isPadded, Nektar::Collections::MatrixFreeBase::m_nIn, Nektar::Collections::MatrixFreeBase::m_nOut, Nektar::Collections::MatrixFreeOneInOneOut::m_output, and Vmath::Vcopy().

◆ 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 187 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 197 of file BwdTrans.cpp.

Referenced by BwdTrans_MatrixFree().

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members