Nektar::Collections::BwdTrans_MatrixFree Class Reference

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

Inheritance diagram for Nektar::Collections::BwdTrans_MatrixFree:

Public Member Functions
	~BwdTrans_MatrixFree () final
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
virtual void	CheckFactors (StdRegions::FactorMap factors, int coll_phys_offset)
	Check the validity of the supplied factor map. More...
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 COLLECTIONS_EXPORT	~Operator ()
unsigned int	GetWspSize ()
	Get the size of the required workspace. More...
unsigned int	GetNumElmt ()
	Get expansion pointer. More...
StdRegions::StdExpansionSharedPtr	GetExpSharedPtr ()
	Get expansion pointer. More...

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 Attributes inherited from Nektar::Collections::Operator
bool	m_isDeformed
StdRegions::StdExpansionSharedPtr	m_stdExp
unsigned int	m_numElmt
unsigned int	m_nqe
unsigned int	m_wspSize

Detailed Description

Backward transform operator using matrix free operators.

Definition at line 150 of file BwdTrans.cpp.

Constructor & Destructor Documentation

~BwdTrans_MatrixFree()

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

inlinefinal

Definition at line 155 of file BwdTrans.cpp.

    {
    }

BwdTrans_MatrixFree()

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

inlineprivate

Definition at line 202 of file BwdTrans.cpp.

        : Operator(pCollExp, pGeomData, factors),
          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(), and Nektar::Collections::GetOperatorFactory().

Member Function Documentation

CheckFactors()

virtual void Nektar::Collections::BwdTrans_MatrixFree::CheckFactors ( StdRegions::FactorMap  factors, int  coll_phys_offset  )

inlinevirtual

Check the validity of the supplied factor map.

Implements Nektar::Collections::Operator.

Definition at line 191 of file BwdTrans.cpp.

    {
        boost::ignore_unused(factors, coll_phys_offset);
        ASSERTL0(false, "Not valid for this operator.");
    }

References ASSERTL0.

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 159 of file BwdTrans.cpp.

    {
        boost::ignore_unused(output1, output2, wsp);
 
        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 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 182 of file BwdTrans.cpp.

    {
        boost::ignore_unused(dir, input, output, wsp);
        NEKERROR(ErrorUtil::efatal,
                 "BwdTrans_MatrixFree: Not valid for this operator.");
    }

References NEKERROR.

Member Data Documentation

m_oper

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

private

Definition at line 200 of file BwdTrans.cpp.