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
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
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
unsigned int	m_nqe
unsigned int	m_wspSize

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

Detailed Description

Phys deriv operator using sum-factorisation (Segment)

Definition at line 779 of file PhysDeriv.cpp.

Constructor & Destructor Documentation

~PhysDeriv_SumFac_Seg()

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

inlinefinal

Definition at line 784 of file PhysDeriv.cpp.

        {
        }

PhysDeriv_SumFac_Seg()

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

inlineprivate

Definition at line 902 of file PhysDeriv.cpp.

            : Operator(pCollExp, pGeomData, factors),
              m_nquad0 (m_stdExp->GetNumPoints(0))
        {
            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_wspSize = m_nquad0*m_numElmt;
        }

Member Function Documentation

CheckFactors()

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

inlinevirtual

Check the validity of the supplied factor map.

Implements Nektar::Collections::Operator.

Definition at line 888 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_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 788 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.get(), m_nquad0, 0.0,
                        diff0.get(), 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(), 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 854 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.get(), m_nquad0, 0.0,
                        diff0.get(), 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(), Vmath::Smul(), and Vmath::Vmul().

Member Data Documentation

m_coordim

int Nektar::Collections::PhysDeriv_SumFac_Seg::m_coordim

protected

Definition at line 896 of file PhysDeriv.cpp.

m_Deriv0

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

protected

Definition at line 899 of file PhysDeriv.cpp.

m_derivFac

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

protected

Definition at line 898 of file PhysDeriv.cpp.

m_nquad0

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

protected

Definition at line 897 of file PhysDeriv.cpp.