Nektar::Collections::PhysDeriv_SumFac_Quad Class Reference

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

Inheritance diagram for Nektar::Collections::PhysDeriv_SumFac_Quad:

Public Member Functions
	~PhysDeriv_SumFac_Quad () 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...

Protected Attributes
int	m_coordim
const int	m_nquad0
const int	m_nquad1
Array< TwoD, const NekDouble >	m_derivFac
NekDouble *	m_Deriv0
NekDouble *	m_Deriv1
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

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

Detailed Description

Phys deriv operator using sum-factorisation (Quad)

Definition at line 931 of file PhysDeriv.cpp.

Constructor & Destructor Documentation

~PhysDeriv_SumFac_Quad()

Nektar::Collections::PhysDeriv_SumFac_Quad::~PhysDeriv_SumFac_Quad ( )

inlinefinal

Definition at line 936 of file PhysDeriv.cpp.

        {
        }

PhysDeriv_SumFac_Quad()

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

inlineprivate

Definition at line 1083 of file PhysDeriv.cpp.

            : Operator(pCollExp, pGeomData, factors),
              m_nquad0 (m_stdExp->GetNumPoints(0)),
              m_nquad1 (m_stdExp->GetNumPoints(1))
        {
            LibUtilities::PointsKeyVector PtsKey = m_stdExp->GetPointsKeys();
            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_wspSize = 2 * m_nquad0*m_nquad1*m_numElmt;
        }

Member Function Documentation

CheckFactors()

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

inlinevirtual

Check the validity of the supplied factor map.

Implements Nektar::Collections::Operator.

Definition at line 1067 of file PhysDeriv.cpp.

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

References ASSERTL0.

operator()() [1/2]

void Nektar::Collections::PhysDeriv_SumFac_Quad::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 940 of file PhysDeriv.cpp.

        {
 
            const int nqtot   = m_nquad0 * m_nquad1;
            const int nqcol   = nqtot*m_numElmt;
 
            ASSERTL1(wsp.size() == m_wspSize,
                     "Incorrect workspace size");
            ASSERTL1(input.size() >= nqcol,
                     "Incorrect input size");
 
            Array<OneD, NekDouble> diff0(nqcol, wsp             );
            Array<OneD, NekDouble> diff1(nqcol, wsp    +   nqcol);
 
            Blas::Dgemm('N', 'N', m_nquad0, m_nquad1*m_numElmt,
                        m_nquad0, 1.0, m_Deriv0, m_nquad0,
                        input.get(), m_nquad0, 0.0,
                        diff0.get(), m_nquad0);
 
            int cnt = 0;
            for (int i = 0; i < m_numElmt; ++i, cnt += nqtot)
            {
                Blas::Dgemm('N', 'T', m_nquad0, m_nquad1, m_nquad1, 1.0,
                            input.get() + cnt, m_nquad0,
                            m_Deriv1, m_nquad1, 0.0,
                            diff1.get() + cnt, m_nquad0);
            }
 
            if(m_isDeformed)
            {
                Vmath::Vmul  (nqcol, m_derivFac[0], 1, diff0, 1, output0, 1);
                Vmath::Vvtvp (nqcol, m_derivFac[1], 1, diff1, 1, output0, 1,
                              output0, 1);
                Vmath::Vmul  (nqcol, m_derivFac[2], 1, diff0, 1, output1, 1);
                Vmath::Vvtvp (nqcol, m_derivFac[3], 1, diff1, 1, output1, 1,
                              output1, 1);
                
                if (m_coordim == 3)
                {
                    Vmath::Vmul  (nqcol, m_derivFac[4], 1, diff0, 1, output2, 1);
                    Vmath::Vvtvp (nqcol, m_derivFac[5], 1, diff1, 1, output2, 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);
                    Vmath::Svtvp (m_nqe, m_derivFac[1][e], diff1 + e*m_nqe, 1,
                                  output0 + e*m_nqe, 1, t = output0 + e*m_nqe, 1);
 
                    Vmath::Smul  (m_nqe, m_derivFac[2][e], diff0 + e*m_nqe, 1,
                                  t = output1 + e*m_nqe, 1);
                    Vmath::Svtvp (m_nqe, m_derivFac[3][e], diff1 + e*m_nqe, 1,
                                  output1 + e*m_nqe, 1, t = output1 + e*m_nqe, 1);
                }
 
                if (m_coordim == 3)
                {
                    for(int e = 0; e < m_numElmt; ++e)
                    {
                        Vmath::Smul  (m_nqe, m_derivFac[4][e], diff0 + e*m_nqe, 1,
                                      t = output2 + e*m_nqe, 1);
                        Vmath::Svtvp (m_nqe, m_derivFac[5][e], diff1 + e*m_nqe, 1,
                                      output2 + e*m_nqe, 1, t = output2 + e*m_nqe, 1);
                    }
                }
            }
        }

References ASSERTL1, Blas::Dgemm(), Vmath::Smul(), Vmath::Svtvp(), Vmath::Vmul(), and Vmath::Vvtvp().

operator()() [2/2]

void Nektar::Collections::PhysDeriv_SumFac_Quad::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 1018 of file PhysDeriv.cpp.

        {
            const int nqtot   = m_nquad0 * m_nquad1;
            const int nqcol   = nqtot*m_numElmt;
 
            ASSERTL1(wsp.size() == m_wspSize,
                     "Incorrect workspace size");
            ASSERTL1(input.size() >= nqcol,
                     "Incorrect input size");
 
            Array<OneD, NekDouble> diff0(nqcol, wsp             );
            Array<OneD, NekDouble> diff1(nqcol, wsp    +   nqcol);
 
            Blas::Dgemm('N', 'N', m_nquad0, m_nquad1*m_numElmt,
                        m_nquad0, 1.0, m_Deriv0, m_nquad0,
                        input.get(), m_nquad0, 0.0,
                        diff0.get(), m_nquad0);
 
            int cnt = 0;
            for (int i = 0; i < m_numElmt; ++i, cnt += nqtot)
            {
                Blas::Dgemm('N', 'T', m_nquad0, m_nquad1, m_nquad1, 1.0,
                            input.get() + cnt, m_nquad0,
                            m_Deriv1, m_nquad1, 0.0,
                            diff1.get() + cnt, m_nquad0);
            }
 
            if(m_isDeformed)
            {
                Vmath::Vmul  (nqcol, m_derivFac[2*dir]  , 1, diff0, 1, output, 1);
                Vmath::Vvtvp (nqcol, m_derivFac[2*dir+1], 1, diff1, 1, output, 1,
                              output, 1);
            }
            else
            {
                Array<OneD, NekDouble> t;
                for(int e = 0; e < m_numElmt; ++e)
                {
                    Vmath::Smul  (m_nqe, m_derivFac[2*dir][e], diff0 + e*m_nqe, 1,
                                  t = output + e*m_nqe, 1);
                    Vmath::Svtvp (m_nqe, m_derivFac[2*dir+1][e], diff1 + e*m_nqe, 1,
                                  output + e*m_nqe, 1, t = output + e*m_nqe, 1);
                }
            }
        }

References ASSERTL1, Blas::Dgemm(), Vmath::Smul(), Vmath::Svtvp(), Vmath::Vmul(), and Vmath::Vvtvp().

Member Data Documentation

m_coordim

int Nektar::Collections::PhysDeriv_SumFac_Quad::m_coordim

protected

Definition at line 1075 of file PhysDeriv.cpp.

m_Deriv0

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Quad::m_Deriv0

protected

Definition at line 1079 of file PhysDeriv.cpp.

m_Deriv1

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Quad::m_Deriv1

protected

Definition at line 1080 of file PhysDeriv.cpp.

m_derivFac

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

protected

Definition at line 1078 of file PhysDeriv.cpp.

m_nquad0

const int Nektar::Collections::PhysDeriv_SumFac_Quad::m_nquad0

protected

Definition at line 1076 of file PhysDeriv.cpp.

m_nquad1

const int Nektar::Collections::PhysDeriv_SumFac_Quad::m_nquad1

protected

Definition at line 1077 of file PhysDeriv.cpp.