#include <PreconditionerLinearWithLowEnergy.h>

Inheritance diagram for Nektar::MultiRegions::PreconditionerLinearWithLowEnergy:

Collaboration diagram for Nektar::MultiRegions::PreconditionerLinearWithLowEnergy:

Public Member Functions
	PreconditionerLinearWithLowEnergy (const boost::shared_ptr< GlobalLinSys > &plinsys, const AssemblyMapSharedPtr &pLocToGloMap)

virtual	~PreconditionerLinearWithLowEnergy ()

Public Member Functions inherited from Nektar::MultiRegions::Preconditioner
	Preconditioner (const boost::shared_ptr< GlobalLinSys > &plinsys, const AssemblyMapSharedPtr &pLocToGloMap)

virtual	~Preconditioner ()

void	DoPreconditioner (const Array< OneD, NekDouble > &pInput, Array< OneD, NekDouble > &pOutput)

void	DoPreconditionerWithNonVertOutput (const Array< OneD, NekDouble > &pInput, Array< OneD, NekDouble > &pOutput, const Array< OneD, NekDouble > &pNonVertOutput, Array< OneD, NekDouble > &pVertForce=NullNekDouble1DArray)

void	DoTransformToLowEnergy (Array< OneD, NekDouble > &pInOut, int offset)

void	DoTransformToLowEnergy (const Array< OneD, NekDouble > &pInput, Array< OneD, NekDouble > &pOutput)

void	DoTransformFromLowEnergy (Array< OneD, NekDouble > &pInOut)

void	DoMultiplybyInverseTransformationMatrix (const Array< OneD, NekDouble > &pInput, Array< OneD, NekDouble > &pOutput)

void	DoMultiplybyInverseTransposedTransformationMatrix (const Array< OneD, NekDouble > &pInput, Array< OneD, NekDouble > &pOutput)

void	BuildPreconditioner ()

void	InitObject ()

Array< OneD, NekDouble >	AssembleStaticCondGlobalDiagonals ()
	Performs global assembly of diagonal entries to global Schur complement matrix. More...

const DNekScalBlkMatSharedPtr &	GetBlockTransformedSchurCompl () const

const DNekScalBlkMatSharedPtr &	GetBlockCMatrix () const

const DNekScalBlkMatSharedPtr &	GetBlockInvDMatrix () const

const DNekScalBlkMatSharedPtr &	GetBlockSchurCompl () const

const DNekScalBlkMatSharedPtr &	GetBlockTransformationMatrix () const

const DNekScalBlkMatSharedPtr &	GetBlockTransposedTransformationMatrix () const

DNekScalMatSharedPtr	TransformedSchurCompl (int offset, const boost::shared_ptr< DNekScalMat > &loc_mat)

Static Public Member Functions
static PreconditionerSharedPtr	create (const boost::shared_ptr< GlobalLinSys > &plinsys, const boost::shared_ptr< AssemblyMap > &pLocToGloMap)
	Creates an instance of this class. More...

Static Public Attributes
static std::string	className
	Name of class. More...

Protected Attributes
PreconditionerSharedPtr	m_linSpacePrecon

PreconditionerSharedPtr	m_lowEnergyPrecon

Protected Attributes inherited from Nektar::MultiRegions::Preconditioner
const boost::weak_ptr < GlobalLinSys >	m_linsys

PreconditionerType	m_preconType

DNekMatSharedPtr	m_preconditioner

boost::shared_ptr< AssemblyMap >	m_locToGloMap

LibUtilities::CommSharedPtr	m_comm

Private Member Functions
virtual void	v_InitObject ()

virtual void	v_DoTransformToLowEnergy (Array< OneD, NekDouble > &pInOut, int offset)
	Transform from original basis to low energy basis. More...

virtual void	v_DoTransformFromLowEnergy (Array< OneD, NekDouble > &pInput)
	Transform from low energy basis to orignal basis. More...

virtual DNekScalMatSharedPtr	v_TransformedSchurCompl (int offset, const boost::shared_ptr< DNekScalMat > &loc_mat)
	Get block elemental transposed transformation matrix $\mathbf{R}^{T}$ . More...

virtual void	v_DoPreconditioner (const Array< OneD, NekDouble > &pInput, Array< OneD, NekDouble > &pOutput)
	Apply a preconditioner to the conjugate gradient method. More...

virtual void	v_BuildPreconditioner ()

Additional Inherited Members

Detailed Description

This class implements preconditioning for the conjugate gradient matrix solver.

Definition at line 49 of file PreconditionerLinearWithLowEnergy.h.

Constructor & Destructor Documentation

Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::PreconditionerLinearWithLowEnergy	(	const boost::shared_ptr< GlobalLinSys > &	plinsys,
		const AssemblyMapSharedPtr &	pLocToGloMap
	)

Definition at line 65 of file PreconditionerLinearWithLowEnergy.cpp.

             : Preconditioner(plinsys, pLocToGloMap)
         {
         }

virtual Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::~PreconditionerLinearWithLowEnergy ( )

inlinevirtual

Definition at line 71 of file PreconditionerLinearWithLowEnergy.h.

71 {}

Member Function Documentation

static PreconditionerSharedPtr Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::create	(	const boost::shared_ptr< GlobalLinSys > &	plinsys,
		const boost::shared_ptr< AssemblyMap > &	pLocToGloMap
	)

inlinestatic

Creates an instance of this class.

Definition at line 53 of file PreconditionerLinearWithLowEnergy.h.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr().

             {
             PreconditionerSharedPtr p = MemoryManager<PreconditionerLinearWithLowEnergy>::AllocateSharedPtr(plinsys,pLocToGloMap);
             p->InitObject();
             return p;
             }

void Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::v_BuildPreconditioner ( )

privatevirtual

Reimplemented from Nektar::MultiRegions::Preconditioner.

Definition at line 112 of file PreconditionerLinearWithLowEnergy.cpp.

References m_linSpacePrecon, and m_lowEnergyPrecon.

         {
             m_linSpacePrecon->BuildPreconditioner();
             m_lowEnergyPrecon->BuildPreconditioner();
     }

void Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::v_DoPreconditioner	(	const Array< OneD, NekDouble > &	pInput,
		Array< OneD, NekDouble > &	pOutput
	)

privatevirtual

Apply a preconditioner to the conjugate gradient method.

Reimplemented from Nektar::MultiRegions::Preconditioner.

Definition at line 122 of file PreconditionerLinearWithLowEnergy.cpp.

References m_linSpacePrecon, m_lowEnergyPrecon, and Vmath::Vadd().

         {
             int nGlobal = pInput.num_elements();
 
             Array<OneD, NekDouble> OutputLowEnergy(nGlobal, 0.0);
             Array<OneD, NekDouble> tmp(nGlobal, 0.0);
             Array<OneD, NekDouble> OutputLinear(nGlobal, 0.0);
             Array<OneD, NekDouble> InputLinear(nGlobal, 0.0);
 
             //Apply Low Energy preconditioner
             m_lowEnergyPrecon->DoPreconditioner(pInput, OutputLowEnergy);
 
             //Transform input from low energy to original basis
             m_lowEnergyPrecon->DoMultiplybyInverseTransformationMatrix(pInput, InputLinear);
 
             //Apply linear space preconditioner
             m_linSpacePrecon->DoPreconditionerWithNonVertOutput(InputLinear, OutputLinear, tmp);
 
             m_lowEnergyPrecon->DoMultiplybyInverseTransposedTransformationMatrix(OutputLinear,pOutput);
 
             Vmath::Vadd(nGlobal,pOutput,1,OutputLowEnergy,1,pOutput,1);
         }

void Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::v_DoTransformFromLowEnergy ( Array< OneD, NekDouble > & pInput )

privatevirtual

Transform from low energy basis to orignal basis.

Reimplemented from Nektar::MultiRegions::Preconditioner.

Definition at line 94 of file PreconditionerLinearWithLowEnergy.cpp.

References m_lowEnergyPrecon.

         {
             m_lowEnergyPrecon->DoTransformFromLowEnergy(pInput);
         }

void Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::v_DoTransformToLowEnergy	(	Array< OneD, NekDouble > &	pInOut,
		int	offset
	)

privatevirtual

Transform from original basis to low energy basis.

Reimplemented from Nektar::MultiRegions::Preconditioner.

Definition at line 84 of file PreconditionerLinearWithLowEnergy.cpp.

References m_lowEnergyPrecon.

         {
             m_lowEnergyPrecon->DoTransformToLowEnergy(pInOut,offset);
         }

void Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::v_InitObject ( )

privatevirtual

Reimplemented from Nektar::MultiRegions::Preconditioner.

Definition at line 75 of file PreconditionerLinearWithLowEnergy.cpp.

References Nektar::LibUtilities::NekFactory< tKey, tBase, >::CreateInstance(), Nektar::MultiRegions::GetPreconFactory(), m_linSpacePrecon, Nektar::MultiRegions::Preconditioner::m_linsys, Nektar::MultiRegions::Preconditioner::m_locToGloMap, and m_lowEnergyPrecon.

         {
             m_linSpacePrecon = GetPreconFactory().CreateInstance("FullLinearSpace",m_linsys.lock(),m_locToGloMap);
             m_lowEnergyPrecon = GetPreconFactory().CreateInstance("LowEnergyBlock",m_linsys.lock(),m_locToGloMap);
         }

DNekScalMatSharedPtr Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::v_TransformedSchurCompl	(	int	offset,
		const boost::shared_ptr< DNekScalMat > &	loc_mat
	)

privatevirtual

Get block elemental transposed transformation matrix $\mathbf{R}^{T}$ .

Reimplemented from Nektar::MultiRegions::Preconditioner.

Definition at line 102 of file PreconditionerLinearWithLowEnergy.cpp.

References m_lowEnergyPrecon.

     {
             DNekScalMatSharedPtr returnval;
             returnval=m_lowEnergyPrecon->TransformedSchurCompl(offset,loc_mat);
             return returnval;
         }

Member Data Documentation

string Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::className

static

Initial value:

= GetPreconFactory().RegisterCreatorFunction(
                    "FullLinearSpaceWithLowEnergyBlock",
                    PreconditionerLinearWithLowEnergy::create,
                    "Full Linear space and low energy block preconditioning")

Name of class.

Registers the class with the Factory.

Definition at line 64 of file PreconditionerLinearWithLowEnergy.h.

PreconditionerSharedPtr Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::m_linSpacePrecon

protected

Definition at line 76 of file PreconditionerLinearWithLowEnergy.h.

Referenced by v_BuildPreconditioner(), v_DoPreconditioner(), and v_InitObject().

PreconditionerSharedPtr Nektar::MultiRegions::PreconditionerLinearWithLowEnergy::m_lowEnergyPrecon

protected

Definition at line 77 of file PreconditionerLinearWithLowEnergy.h.

Referenced by v_BuildPreconditioner(), v_DoPreconditioner(), v_DoTransformFromLowEnergy(), v_DoTransformToLowEnergy(), v_InitObject(), and v_TransformedSchurCompl().