Nektar::Collections::PhysDeriv_SumFac_Seg Class Reference

Phys deriv operator using sum-factorisation (Segment) More...

Inheritance diagram for Nektar::Collections::PhysDeriv_SumFac_Seg:

Public Member Functions
	~PhysDeriv_SumFac_Seg () 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)

Protected Attributes
int	m_coordim
const int	m_nquad0
Array< TwoD, const NekDouble >	m_derivFac
NekDouble *	m_Deriv0
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

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

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

Detailed Description

Phys deriv operator using sum-factorisation (Segment)

Definition at line 698 of file PhysDeriv.cpp.

Constructor & Destructor Documentation

~PhysDeriv_SumFac_Seg()

Nektar::Collections::PhysDeriv_SumFac_Seg::~PhysDeriv_SumFac_Seg ( )

finaldefault

PhysDeriv_SumFac_Seg()

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

inlineprivate

Definition at line 804 of file PhysDeriv.cpp.

        : Operator(pCollExp, pGeomData, factors), PhysDeriv_Helper(),
          m_nquad0(m_stdExp->GetNumPoints(0))
    {
        m_coordim = pCollExp[0]->GetCoordim();
 
        m_derivFac = pGeomData->GetDerivFactors(pCollExp);
 
        m_Deriv0  = &((m_stdExp->GetBasis(0)->GetD())->GetPtr())[0];
        m_wspSize = m_nquad0 * m_numElmt;
    }

References m_coordim, m_Deriv0, m_derivFac, m_nquad0, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_stdExp, and Nektar::Collections::Operator::m_wspSize.

Member Function Documentation

operator()() [1/2]

void Nektar::Collections::PhysDeriv_SumFac_Seg::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 706 of file PhysDeriv.cpp.

    {
        const int nqcol = m_nquad0 * m_numElmt;
 
        ASSERTL1(wsp.size() == m_wspSize, "Incorrect workspace size");
        ASSERTL1(input.size() >= nqcol, "Incorrect input size");
 
        Array<OneD, NekDouble> diff0(nqcol, wsp);
 
        Blas::Dgemm('N', 'N', m_nquad0, m_numElmt, m_nquad0, 1.0, m_Deriv0,
                    m_nquad0, input.data(), m_nquad0, 0.0, diff0.data(),
                    m_nquad0);
 
        if (m_isDeformed)
        {
            Vmath::Vmul(nqcol, m_derivFac[0], 1, diff0, 1, output0, 1);
 
            if (m_coordim == 2)
            {
                Vmath::Vmul(nqcol, m_derivFac[1], 1, diff0, 1, output1, 1);
            }
            else if (m_coordim == 3)
            {
                Vmath::Vmul(nqcol, m_derivFac[1], 1, diff0, 1, output1, 1);
                Vmath::Vmul(nqcol, m_derivFac[2], 1, diff0, 1, output2, 1);
            }
        }
        else
        {
            Array<OneD, NekDouble> t;
            for (int e = 0; e < m_numElmt; ++e)
            {
                Vmath::Smul(m_nqe, m_derivFac[0][e], diff0 + e * m_nqe, 1,
                            t = output0 + e * m_nqe, 1);
            }
 
            if (m_coordim == 2)
            {
                for (int e = 0; e < m_numElmt; ++e)
                {
                    Vmath::Smul(m_nqe, m_derivFac[1][e], diff0 + e * m_nqe, 1,
                                t = output1 + e * m_nqe, 1);
                }
            }
            else if (m_coordim == 3)
            {
                for (int e = 0; e < m_numElmt; ++e)
                {
                    Vmath::Smul(m_nqe, m_derivFac[1][e], diff0 + e * m_nqe, 1,
                                t = output1 + e * m_nqe, 1);
                    Vmath::Smul(m_nqe, m_derivFac[2][e], diff0 + e * m_nqe, 1,
                                t = output2 + e * m_nqe, 1);
                }
            }
        }
    }

References ASSERTL1, Blas::Dgemm(), m_coordim, m_Deriv0, m_derivFac, Nektar::Collections::Operator::m_isDeformed, Nektar::Collections::Operator::m_nqe, m_nquad0, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_wspSize, Vmath::Smul(), and Vmath::Vmul().

operator()() [2/2]

void Nektar::Collections::PhysDeriv_SumFac_Seg::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 767 of file PhysDeriv.cpp.

    {
        const int nqcol = m_nquad0 * m_numElmt;
 
        ASSERTL1(wsp.size() == m_wspSize, "Incorrect workspace size");
        ASSERTL1(input.size() >= nqcol, "Incorrect input size");
 
        Array<OneD, NekDouble> diff0(nqcol, wsp);
 
        Blas::Dgemm('N', 'N', m_nquad0, m_numElmt, m_nquad0, 1.0, m_Deriv0,
                    m_nquad0, input.data(), m_nquad0, 0.0, diff0.data(),
                    m_nquad0);
 
        if (m_isDeformed)
        {
            Vmath::Vmul(nqcol, m_derivFac[dir], 1, diff0, 1, output, 1);
        }
        else
        {
            Array<OneD, NekDouble> t;
            for (int e = 0; e < m_numElmt; ++e)
            {
                Vmath::Smul(m_nqe, m_derivFac[0][e], diff0 + e * m_nqe, 1,
                            t = output + e * m_nqe, 1);
            }
        }
    }

References ASSERTL1, Blas::Dgemm(), m_Deriv0, m_derivFac, Nektar::Collections::Operator::m_isDeformed, Nektar::Collections::Operator::m_nqe, m_nquad0, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_wspSize, Vmath::Smul(), and Vmath::Vmul().

Member Data Documentation

m_coordim

int Nektar::Collections::PhysDeriv_SumFac_Seg::m_coordim

protected

Definition at line 798 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Seg().

m_Deriv0

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Seg::m_Deriv0

protected

Definition at line 801 of file PhysDeriv.cpp.

Referenced by operator()(), operator()(), and PhysDeriv_SumFac_Seg().

m_derivFac

Array<TwoD, const NekDouble> Nektar::Collections::PhysDeriv_SumFac_Seg::m_derivFac

protected

Definition at line 800 of file PhysDeriv.cpp.

Referenced by operator()(), operator()(), and PhysDeriv_SumFac_Seg().

m_nquad0

const int Nektar::Collections::PhysDeriv_SumFac_Seg::m_nquad0

protected

Definition at line 799 of file PhysDeriv.cpp.

Referenced by operator()(), operator()(), and PhysDeriv_SumFac_Seg().