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.
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
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
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_Hex (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 (Hex)

Definition at line 1199 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< LocalRegions::ExpansionSharedPtr >  pCollExp, CoalescedGeomDataSharedPtr  pGeomData, StdRegions::FactorMap  factors  )

inlineprivate

Definition at line 1358 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

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 1207 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 1283 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 1349 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 1353 of file PhysDeriv.cpp.

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

m_Deriv1

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

protected

Definition at line 1354 of file PhysDeriv.cpp.

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

m_Deriv2

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

protected

Definition at line 1355 of file PhysDeriv.cpp.

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

m_derivFac

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

protected

Definition at line 1348 of file PhysDeriv.cpp.

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

m_nquad0

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

protected

Definition at line 1350 of file PhysDeriv.cpp.

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

m_nquad1

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

protected

Definition at line 1351 of file PhysDeriv.cpp.

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

m_nquad2

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

protected

Definition at line 1352 of file PhysDeriv.cpp.

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