Inner product WRT deriv base operator using sum-factorisation (Tri) More...

Inheritance diagram for Nektar::Collections::IProductWRTDerivBase_SumFac_Tri:

Public Member Functions
	~IProductWRTDerivBase_SumFac_Tri () final=default

void	operator() (const Array< OneD, const NekDouble > &entry0, Array< OneD, NekDouble > &entry1, Array< OneD, NekDouble > &entry2, Array< OneD, NekDouble > &entry3, Array< OneD, NekDouble > &wsp) final

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

void	CheckFactors (StdRegions::FactorMap factors, int coll_phys_offset) override
	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	~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	CheckFactors (StdRegions::FactorMap factors, int coll_phys_offset)=0
	Check the validity of the supplied factor map. 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 ()

unsigned int	GetOutputSize ()

Protected Attributes
const int	m_nquad0

const int	m_nquad1

const int	m_nmodes0

const int	m_nmodes1

const bool	m_colldir0

const bool	m_colldir1

int	m_coordim

Array< TwoD, const NekDouble >	m_derivFac

Array< OneD, const NekDouble >	m_jacWStdW

Array< OneD, const NekDouble >	m_base0

Array< OneD, const NekDouble >	m_base1

Array< OneD, const NekDouble >	m_derbase0

Array< OneD, const NekDouble >	m_derbase1

Array< OneD, NekDouble >	m_fac0

Array< OneD, NekDouble >	m_fac1

bool	m_sortTopVertex

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...

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

Private Member Functions inherited from Nektar::Collections::IProductWRTDerivBase_Helper
	IProductWRTDerivBase_Helper ()

Additional Inherited Members
Protected Member Functions inherited from Nektar::Collections::Operator
virtual int	v_GetInputSize ()
	This purely virtual function needs to be set-up for every operator inside Collections. It is responsible for returning the size of input collection, that the operator is applied on either in physical or coefficient space. More...

virtual int	v_GetOutputSize ()
	This purely virtual function needs to be set-up for every operator inside Collections. It is responsible for returning the output size either in physical or coefficient space of an operator inside Collections. More...

Detailed Description

Inner product WRT deriv base operator using sum-factorisation (Tri)

Definition at line 1011 of file IProductWRTDerivBase.cpp.

Constructor & Destructor Documentation

◆ ~IProductWRTDerivBase_SumFac_Tri()

Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::~IProductWRTDerivBase_SumFac_Tri ( )

finaldefault

◆ IProductWRTDerivBase_SumFac_Tri()

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

inlineprivate

Definition at line 1165 of file IProductWRTDerivBase.cpp.

        : Operator(pCollExp, pGeomData, factors), IProductWRTDerivBase_Helper(),
          m_nquad0(m_stdExp->GetNumPoints(0)),
          m_nquad1(m_stdExp->GetNumPoints(1)),
          m_nmodes0(m_stdExp->GetBasisNumModes(0)),
          m_nmodes1(m_stdExp->GetBasisNumModes(1)),
          m_colldir0(m_stdExp->GetBasis(0)->Collocation()),
          m_colldir1(m_stdExp->GetBasis(1)->Collocation()),
          m_base0(m_stdExp->GetBasis(0)->GetBdata()),
          m_base1(m_stdExp->GetBasis(1)->GetBdata()),
          m_derbase0(m_stdExp->GetBasis(0)->GetDbdata()),
          m_derbase1(m_stdExp->GetBasis(1)->GetDbdata())
    {
        m_coordim  = pCollExp[0]->GetCoordim();
        m_derivFac = pGeomData->GetDerivFactors(pCollExp);
        m_jacWStdW = pGeomData->GetJacWithStdWeights(pCollExp);
        m_wspSize =
            4 * m_numElmt * (max(m_nquad0 * m_nquad1, m_nmodes0 * m_nmodes1));
 
        if (m_stdExp->GetBasis(0)->GetBasisType() == LibUtilities::eModified_A)
        {
            m_sortTopVertex = true;
        }
        else
        {
            m_sortTopVertex = false;
        }
 
        const Array<OneD, const NekDouble> &z0 = m_stdExp->GetBasis(0)->GetZ();
        const Array<OneD, const NekDouble> &z1 = m_stdExp->GetBasis(1)->GetZ();
 
        m_fac0 = Array<OneD, NekDouble>(m_nquad0 * m_nquad1);
        // set up geometric factor: 2/(1-z1)
        for (int i = 0; i < m_nquad0; ++i)
        {
            for (int j = 0; j < m_nquad1; ++j)
            {
                m_fac0[i + j * m_nquad0] = 2.0 / (1 - z1[j]);
            }
        }
 
        m_fac1 = Array<OneD, NekDouble>(m_nquad0 * m_nquad1);
        // set up geometric factor: (1+z0)/(1-z1)
        for (int i = 0; i < m_nquad0; ++i)
        {
            for (int j = 0; j < m_nquad1; ++j)
            {
                m_fac1[i + j * m_nquad0] = (1 + z0[i]) / (1 - z1[j]);
            }
        }
    }

References Nektar::LibUtilities::eModified_A, m_coordim, m_derivFac, m_fac0, m_fac1, m_jacWStdW, m_nmodes0, m_nmodes1, m_nquad0, m_nquad1, Nektar::Collections::Operator::m_numElmt, m_sortTopVertex, Nektar::Collections::Operator::m_stdExp, and Nektar::Collections::Operator::m_wspSize.

Member Function Documentation

◆ CheckFactors()

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

inlineoverridevirtual

Check the validity of the supplied factor map.

Implements Nektar::Collections::Operator.

Definition at line 1140 of file IProductWRTDerivBase.cpp.

    {
        ASSERTL0(false, "Not valid for this operator.");
    }

References ASSERTL0.

◆ operator()() [1/2]

void Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::operator()	(	const Array< OneD, const NekDouble > &	entry0,
		Array< OneD, NekDouble > &	entry1,
		Array< OneD, NekDouble > &	entry2,
		Array< OneD, NekDouble > &	entry3,
		Array< OneD, NekDouble > &	wsp
	)

inlinefinalvirtual

This method calculates:

\[ (d\phi/dx,in[0]) + (d\phi/dy,in[1]) \]

which can be represented in terms of local cartesian derivaties as:

\[ ((d\phi/d\xi_0\, d\xi_0/dx + d\phi/d\xi_1\, d\xi_1/dx),in[0]) + \]

\[ ((d\phi/d\xi_0\, d\xi_0/dy + d\phi/d\xi_1\, d\xi_1/dy),in[1]) + \]

where we note that

\[ d\phi/d\xi_0 = d\phi/d\eta_0\, d\eta_0/d\xi_0 = d\phi/d\eta_0 2/(1-\eta_1) \]

\[ d\phi/d\xi_1 = d\phi/d\eta_1\, d\eta_1/d\xi_1 + d\phi/d\eta_1\, d\eta_1/d\xi_1 = d\phi/d\eta_0 (1+\eta_0)/(1-\eta_1) + d\phi/d\eta_1 \]

and so the full inner products are

\[ (d\phi/dx,in[0]) + (dphi/dy,in[1]) = (d\phi/d\eta_0, ((2/(1-\eta_1) (d\xi_0/dx in[0] + d\xi_0/dy in[1]) + (1-\eta_0)/(1-\eta_1) (d\xi_1/dx in[0]+d\xi_1/dy in[1])) + (d\phi/d\eta_1, (d\xi_1/dx in[0] + d\xi_1/dy in[1])) \]

Implements Nektar::Collections::Operator.

Definition at line 1050 of file IProductWRTDerivBase.cpp.

    {
        unsigned int nPhys  = m_stdExp->GetTotPoints();
        unsigned int ntot   = m_numElmt * nPhys;
        unsigned int nmodes = m_stdExp->GetNcoeffs();
        unsigned int nmax   = max(ntot, m_numElmt * nmodes);
        Array<OneD, Array<OneD, const NekDouble>> in(3);
        Array<OneD, NekDouble> output, wsp1;
        Array<OneD, Array<OneD, NekDouble>> tmp(2);
 
        in[0] = entry0;
        in[1] = entry1;
        in[2] = entry2;
 
        output = (m_coordim == 2) ? entry2 : entry3;
 
        tmp[0] = wsp;
        tmp[1] = wsp + nmax;
        wsp1   = wsp + 2 * nmax;
 
        if (m_isDeformed)
        {
            for (int i = 0; i < 2; ++i)
            {
                Vmath::Vmul(ntot, m_derivFac[i], 1, in[0], 1, tmp[i], 1);
                for (int j = 1; j < m_coordim; ++j)
                {
                    Vmath::Vvtvp(ntot, m_derivFac[i + 2 * j], 1, in[j], 1,
                                 tmp[i], 1, tmp[i], 1);
                }
            }
        }
        else
        {
            Array<OneD, NekDouble> t;
            for (int e = 0; e < m_numElmt; ++e)
            {
                // calculate dx/dxi in[0] + dy/dxi in[1]
                for (int i = 0; i < 2; ++i)
                {
                    Vmath::Smul(m_nqe, m_derivFac[i][e], in[0] + e * m_nqe, 1,
                                t = tmp[i] + e * m_nqe, 1);
                    for (int j = 1; j < m_coordim; ++j)
                    {
                        Vmath::Svtvp(m_nqe, m_derivFac[i + 2 * j][e],
                                     in[j] + e * m_nqe, 1, tmp[i] + e * m_nqe,
                                     1, t = tmp[i] + e * m_nqe, 1);
                    }
                }
            }
        }
 
        // Multiply by factor: 2/(1-z1)
        for (int i = 0; i < m_numElmt; ++i)
        {
            // scale tmp[0] by geometric factor: 2/(1-z1)
            Vmath::Vmul(nPhys, &m_fac0[0], 1, tmp[0].get() + i * nPhys, 1,
                        tmp[0].get() + i * nPhys, 1);
 
            // scale tmp[1] by geometric factor (1+z0)/(1-z1)
            Vmath::Vvtvp(nPhys, &m_fac1[0], 1, tmp[1].get() + i * nPhys, 1,
                         tmp[0].get() + i * nPhys, 1, tmp[0].get() + i * nPhys,
                         1);
        }
 
        // Iproduct wrt derivative of base 0
        TriIProduct(m_sortTopVertex, m_numElmt, m_nquad0, m_nquad1, m_nmodes0,
                    m_nmodes1, m_derbase0, m_base1, m_jacWStdW, tmp[0], output,
                    wsp1);
 
        // Iproduct wrt derivative of base 1
        TriIProduct(m_sortTopVertex, m_numElmt, m_nquad0, m_nquad1, m_nmodes0,
                    m_nmodes1, m_base0, m_derbase1, m_jacWStdW, tmp[1], tmp[0],
                    wsp1);
 
        Vmath::Vadd(m_numElmt * nmodes, tmp[0], 1, output, 1, output, 1);
    }

References m_base0, m_base1, m_coordim, m_derbase0, m_derbase1, m_derivFac, m_fac0, m_fac1, Nektar::Collections::Operator::m_isDeformed, m_jacWStdW, m_nmodes0, m_nmodes1, Nektar::Collections::Operator::m_nqe, m_nquad0, m_nquad1, Nektar::Collections::Operator::m_numElmt, m_sortTopVertex, Nektar::Collections::Operator::m_stdExp, Vmath::Smul(), Vmath::Svtvp(), Nektar::Collections::TriIProduct(), Vmath::Vadd(), Vmath::Vmul(), and Vmath::Vvtvp().

◆ operator()() [2/2]

void Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::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 1132 of file IProductWRTDerivBase.cpp.

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

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

Member Data Documentation

◆ m_base0

Array<OneD, const NekDouble> Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_base0

protected

Definition at line 1156 of file IProductWRTDerivBase.cpp.

Referenced by operator()().

◆ m_base1

Array<OneD, const NekDouble> Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_base1

protected

Definition at line 1157 of file IProductWRTDerivBase.cpp.

Referenced by operator()().

◆ m_colldir0

const bool Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_colldir0

protected

Definition at line 1151 of file IProductWRTDerivBase.cpp.

◆ m_colldir1

const bool Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_colldir1

protected

Definition at line 1152 of file IProductWRTDerivBase.cpp.

◆ m_coordim

int Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_coordim

protected

Definition at line 1153 of file IProductWRTDerivBase.cpp.

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

◆ m_derbase0

Array<OneD, const NekDouble> Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_derbase0

protected

Definition at line 1158 of file IProductWRTDerivBase.cpp.

Referenced by operator()().

◆ m_derbase1

Array<OneD, const NekDouble> Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_derbase1

protected

Definition at line 1159 of file IProductWRTDerivBase.cpp.

Referenced by operator()().

◆ m_derivFac

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

protected

Definition at line 1154 of file IProductWRTDerivBase.cpp.

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

◆ m_fac0

Array<OneD, NekDouble> Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_fac0

protected

Definition at line 1160 of file IProductWRTDerivBase.cpp.

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

◆ m_fac1

Array<OneD, NekDouble> Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_fac1

protected

Definition at line 1161 of file IProductWRTDerivBase.cpp.

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

◆ m_jacWStdW

Array<OneD, const NekDouble> Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_jacWStdW

protected

Definition at line 1155 of file IProductWRTDerivBase.cpp.

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

◆ m_nmodes0

const int Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_nmodes0

protected

Definition at line 1149 of file IProductWRTDerivBase.cpp.

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

◆ m_nmodes1

const int Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_nmodes1

protected

Definition at line 1150 of file IProductWRTDerivBase.cpp.

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

◆ m_nquad0

const int Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_nquad0

protected

Definition at line 1147 of file IProductWRTDerivBase.cpp.

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

◆ m_nquad1

const int Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_nquad1

protected

Definition at line 1148 of file IProductWRTDerivBase.cpp.

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

◆ m_sortTopVertex

bool Nektar::Collections::IProductWRTDerivBase_SumFac_Tri::m_sortTopVertex

protected

Definition at line 1162 of file IProductWRTDerivBase.cpp.

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

Public Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~IProductWRTDerivBase_SumFac_Tri()

◆ IProductWRTDerivBase_SumFac_Tri()

Member Function Documentation

◆ CheckFactors()

◆ operator()() [1/2]

◆ operator()() [2/2]

Member Data Documentation

◆ m_base0

◆ m_base1

◆ m_colldir0

◆ m_colldir1

◆ m_coordim

◆ m_derbase0

◆ m_derbase1

◆ m_derivFac

◆ m_fac0

◆ m_fac1

◆ m_jacWStdW

◆ m_nmodes0

◆ m_nmodes1

◆ m_nquad0

◆ m_nquad1

◆ m_sortTopVertex