Nektar::Collections::PhysDeriv_SumFac_Hex Class Reference

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

Inheritance diagram for Nektar::Collections::PhysDeriv_SumFac_Hex:

Public Member Functions
	~PhysDeriv_SumFac_Hex () 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
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
Array< TwoD, const NekDouble >	m_derivFac
int	m_coordim
const int	m_nquad0
const int	m_nquad1
const int	m_nquad2
NekDouble *	m_Deriv0
NekDouble *	m_Deriv1
NekDouble *	m_Deriv2
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
	PhysDeriv_SumFac_Hex (vector< StdRegions::StdExpansionSharedPtr > pCollExp, CoalescedGeomDataSharedPtr pGeomData, StdRegions::FactorMap factors)

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...
Protected Member Functions inherited from Nektar::Collections::PhysDeriv_Helper
	PhysDeriv_Helper ()

Detailed Description

Phys deriv operator using sum-factorisation (Hex)

Definition at line 1254 of file PhysDeriv.cpp.

Constructor & Destructor Documentation

~PhysDeriv_SumFac_Hex()

Nektar::Collections::PhysDeriv_SumFac_Hex::~PhysDeriv_SumFac_Hex ( )

finaldefault

PhysDeriv_SumFac_Hex()

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

inlineprivate

Definition at line 1419 of file PhysDeriv.cpp.

        : Operator(pCollExp, pGeomData, factors), PhysDeriv_Helper(),
          m_nquad0(m_stdExp->GetNumPoints(0)),
          m_nquad1(m_stdExp->GetNumPoints(1)),
          m_nquad2(m_stdExp->GetNumPoints(2))
    {
        m_coordim = pCollExp[0]->GetCoordim();
 
        m_derivFac = pGeomData->GetDerivFactors(pCollExp);
 
        m_Deriv0 = &((m_stdExp->GetBasis(0)->GetD())->GetPtr())[0];
        m_Deriv1 = &((m_stdExp->GetBasis(1)->GetD())->GetPtr())[0];
        m_Deriv2 = &((m_stdExp->GetBasis(2)->GetD())->GetPtr())[0];
 
        m_wspSize = 3 * m_nquad0 * m_nquad1 * m_nquad2 * m_numElmt;
    }

References m_coordim, m_Deriv0, m_Deriv1, m_Deriv2, m_derivFac, m_nquad0, m_nquad1, m_nquad2, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_stdExp, and Nektar::Collections::Operator::m_wspSize.

Member Function Documentation

CheckFactors()

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

inlineoverridevirtual

Check the validity of the supplied factor map.

Implements Nektar::Collections::Operator.

Definition at line 1402 of file PhysDeriv.cpp.

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

References ASSERTL0.

operator()() [1/2]

void Nektar::Collections::PhysDeriv_SumFac_Hex::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 1262 of file PhysDeriv.cpp.

    {
        int nPhys = m_stdExp->GetTotPoints();
        int ntot  = m_numElmt * nPhys;
        Array<OneD, NekDouble> tmp0, tmp1, tmp2;
        Array<OneD, Array<OneD, NekDouble>> Diff(3);
        Array<OneD, Array<OneD, NekDouble>> out(3);
        out[0] = output0;
        out[1] = output1;
        out[2] = output2;
 
        for (int i = 0; i < 3; ++i)
        {
            Diff[i] = wsp + i * ntot;
        }
 
        Blas::Dgemm('N', 'N', m_nquad0, m_nquad1 * m_nquad2 * m_numElmt,
                    m_nquad0, 1.0, m_Deriv0, m_nquad0, &input[0], m_nquad0, 0.0,
                    &Diff[0][0], m_nquad0);
 
        for (int i = 0; i < m_numElmt; ++i)
        {
            for (int j = 0; j < m_nquad2; ++j)
            {
                Blas::Dgemm('N', 'T', m_nquad0, m_nquad1, m_nquad1, 1.0,
                            &input[i * nPhys + j * m_nquad0 * m_nquad1],
                            m_nquad0, m_Deriv1, m_nquad1, 0.0,
                            &Diff[1][i * nPhys + j * m_nquad0 * m_nquad1],
                            m_nquad0);
            }
 
            Blas::Dgemm('N', 'T', m_nquad0 * m_nquad1, m_nquad2, m_nquad2, 1.0,
                        &input[i * nPhys], m_nquad0 * m_nquad1, m_Deriv2,
                        m_nquad2, 0.0, &Diff[2][i * nPhys],
                        m_nquad0 * m_nquad1);
        }
 
        // calculate full derivative
        if (m_isDeformed)
        {
            for (int i = 0; i < m_coordim; ++i)
            {
                Vmath::Vmul(ntot, m_derivFac[i * 3], 1, Diff[0], 1, out[i], 1);
                for (int j = 1; j < 3; ++j)
                {
                    Vmath::Vvtvp(ntot, m_derivFac[i * 3 + j], 1, Diff[j], 1,
                                 out[i], 1, out[i], 1);
                }
            }
        }
        else
        {
            Array<OneD, NekDouble> t;
            for (int e = 0; e < m_numElmt; ++e)
            {
                for (int i = 0; i < m_coordim; ++i)
                {
                    Vmath::Smul(m_nqe, m_derivFac[i * 3][e],
                                Diff[0] + e * m_nqe, 1, t = out[i] + e * m_nqe,
                                1);
 
                    for (int j = 1; j < 3; ++j)
                    {
                        Vmath::Svtvp(m_nqe, m_derivFac[i * 3 + j][e],
                                     Diff[j] + e * m_nqe, 1, out[i] + e * m_nqe,
                                     1, t = out[i] + e * m_nqe, 1);
                    }
                }
            }
        }
    }

References Blas::Dgemm(), m_coordim, m_Deriv0, m_Deriv1, m_Deriv2, m_derivFac, Nektar::Collections::Operator::m_isDeformed, Nektar::Collections::Operator::m_nqe, m_nquad0, m_nquad1, m_nquad2, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_stdExp, Vmath::Smul(), Vmath::Svtvp(), Vmath::Vmul(), and Vmath::Vvtvp().

operator()() [2/2]

void Nektar::Collections::PhysDeriv_SumFac_Hex::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 1338 of file PhysDeriv.cpp.

    {
        int nPhys = m_stdExp->GetTotPoints();
        int ntot  = m_numElmt * nPhys;
        Array<OneD, NekDouble> tmp0, tmp1, tmp2;
        Array<OneD, Array<OneD, NekDouble>> Diff(3);
 
        for (int i = 0; i < 3; ++i)
        {
            Diff[i] = wsp + i * ntot;
        }
 
        Blas::Dgemm('N', 'N', m_nquad0, m_nquad1 * m_nquad2 * m_numElmt,
                    m_nquad0, 1.0, m_Deriv0, m_nquad0, &input[0], m_nquad0, 0.0,
                    &Diff[0][0], m_nquad0);
 
        for (int i = 0; i < m_numElmt; ++i)
        {
            for (int j = 0; j < m_nquad2; ++j)
            {
                Blas::Dgemm('N', 'T', m_nquad0, m_nquad1, m_nquad1, 1.0,
                            &input[i * nPhys + j * m_nquad0 * m_nquad1],
                            m_nquad0, m_Deriv1, m_nquad1, 0.0,
                            &Diff[1][i * nPhys + j * m_nquad0 * m_nquad1],
                            m_nquad0);
            }
 
            Blas::Dgemm('N', 'T', m_nquad0 * m_nquad1, m_nquad2, m_nquad2, 1.0,
                        &input[i * nPhys], m_nquad0 * m_nquad1, m_Deriv2,
                        m_nquad2, 0.0, &Diff[2][i * nPhys],
                        m_nquad0 * m_nquad1);
        }
 
        // calculate full derivative
        if (m_isDeformed)
        {
            // calculate full derivative
            Vmath::Vmul(ntot, m_derivFac[dir * 3], 1, Diff[0], 1, output, 1);
            for (int j = 1; j < 3; ++j)
            {
                Vmath::Vvtvp(ntot, m_derivFac[dir * 3 + j], 1, Diff[j], 1,
                             output, 1, output, 1);
            }
        }
        else
        {
            Array<OneD, NekDouble> t;
            for (int e = 0; e < m_numElmt; ++e)
            {
                Vmath::Smul(m_nqe, m_derivFac[dir * 3][e], Diff[0] + e * m_nqe,
                            1, t = output + e * m_nqe, 1);
 
                for (int j = 1; j < 3; ++j)
                {
                    Vmath::Svtvp(m_nqe, m_derivFac[dir * 3 + j][e],
                                 Diff[j] + e * m_nqe, 1, output + e * m_nqe, 1,
                                 t = output + e * m_nqe, 1);
                }
            }
        }
    }

References Blas::Dgemm(), m_Deriv0, m_Deriv1, m_Deriv2, m_derivFac, Nektar::Collections::Operator::m_isDeformed, Nektar::Collections::Operator::m_nqe, m_nquad0, m_nquad1, m_nquad2, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_stdExp, Vmath::Smul(), Vmath::Svtvp(), Vmath::Vmul(), and Vmath::Vvtvp().

Member Data Documentation

m_coordim

int Nektar::Collections::PhysDeriv_SumFac_Hex::m_coordim

protected

Definition at line 1410 of file PhysDeriv.cpp.

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

m_Deriv0

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Hex::m_Deriv0

protected

Definition at line 1414 of file PhysDeriv.cpp.

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

m_Deriv1

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Hex::m_Deriv1

protected

Definition at line 1415 of file PhysDeriv.cpp.

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

m_Deriv2

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Hex::m_Deriv2

protected

Definition at line 1416 of file PhysDeriv.cpp.

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

m_derivFac

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

protected

Definition at line 1409 of file PhysDeriv.cpp.

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

m_nquad0

const int Nektar::Collections::PhysDeriv_SumFac_Hex::m_nquad0

protected

Definition at line 1411 of file PhysDeriv.cpp.

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

m_nquad1

const int Nektar::Collections::PhysDeriv_SumFac_Hex::m_nquad1

protected

Definition at line 1412 of file PhysDeriv.cpp.

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

m_nquad2

const int Nektar::Collections::PhysDeriv_SumFac_Hex::m_nquad2

protected

Definition at line 1413 of file PhysDeriv.cpp.

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