MFEM v4.7.0
Finite element discretization library
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Public Member Functions | Static Public Member Functions | Protected Attributes | Friends | List of all members
mfem::MassIntegrator Class Reference

#include <bilininteg.hpp>

Inheritance diagram for mfem::MassIntegrator:
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Collaboration diagram for mfem::MassIntegrator:
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Public Member Functions

 MassIntegrator (const IntegrationRule *ir=NULL)
 
 MassIntegrator (Coefficient &q, const IntegrationRule *ir=NULL)
 Construct a mass integrator with coefficient q.
 
virtual void AssembleElementMatrix (const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 
virtual void AssembleElementMatrix2 (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &Trans, DenseMatrix &elmat)
 
virtual void AssembleMF (const FiniteElementSpace &fes)
 Method defining matrix-free assembly.
 
virtual void AssemblePA (const FiniteElementSpace &fes)
 Method defining partial assembly.
 
virtual void AssemblePABoundary (const FiniteElementSpace &fes)
 
virtual void AssembleEA (const FiniteElementSpace &fes, Vector &emat, const bool add)
 Method defining element assembly.
 
virtual void AssembleDiagonalPA (Vector &diag)
 Assemble diagonal and add it to Vector diag.
 
virtual void AssembleDiagonalMF (Vector &diag)
 Assemble diagonal and add it to Vector diag.
 
virtual void AddMultMF (const Vector &, Vector &) const
 
virtual void AddMultPA (const Vector &, Vector &) const
 Method for partially assembled action.
 
virtual void AddMultTransposePA (const Vector &, Vector &) const
 Method for partially assembled transposed action.
 
bool SupportsCeed () const
 Indicates whether this integrator can use a Ceed backend.
 
const CoefficientGetCoefficient () const
 
virtual void AssemblePA (const FiniteElementSpace &fes)
 Method defining partial assembly.
 
virtual void AssemblePA (const FiniteElementSpace &trial_fes, const FiniteElementSpace &test_fes)
 
- Public Member Functions inherited from mfem::BilinearFormIntegrator
virtual void AssemblePA (const FiniteElementSpace &fes)
 Method defining partial assembly.
 
virtual void AssemblePA (const FiniteElementSpace &trial_fes, const FiniteElementSpace &test_fes)
 
virtual void AssembleNURBSPA (const FiniteElementSpace &fes)
 Method defining partial assembly on NURBS patches.
 
virtual void AssemblePABoundary (const FiniteElementSpace &fes)
 
virtual void AssemblePAInteriorFaces (const FiniteElementSpace &fes)
 
virtual void AssemblePABoundaryFaces (const FiniteElementSpace &fes)
 
virtual void AssembleDiagonalPA (Vector &diag)
 Assemble diagonal and add it to Vector diag.
 
virtual void AssembleDiagonalPA_ADAt (const Vector &D, Vector &diag)
 Assemble diagonal of \(A D A^T\) ( \(A\) is this integrator) and add it to diag.
 
virtual void AddMultPA (const Vector &x, Vector &y) const
 Method for partially assembled action.
 
virtual void AddMultNURBSPA (const Vector &x, Vector &y) const
 Method for partially assembled action on NURBS patches.
 
virtual void AddMultTransposePA (const Vector &x, Vector &y) const
 Method for partially assembled transposed action.
 
virtual void AssembleEA (const FiniteElementSpace &fes, Vector &emat, const bool add=true)
 Method defining element assembly.
 
virtual void AssembleMF (const FiniteElementSpace &fes)
 Method defining matrix-free assembly.
 
virtual void AddMultMF (const Vector &x, Vector &y) const
 
virtual void AddMultTransposeMF (const Vector &x, Vector &y) const
 
virtual void AssembleDiagonalMF (Vector &diag)
 Assemble diagonal and add it to Vector diag.
 
virtual void AssembleEAInteriorFaces (const FiniteElementSpace &fes, Vector &ea_data_int, Vector &ea_data_ext, const bool add=true)
 
virtual void AssembleEABoundaryFaces (const FiniteElementSpace &fes, Vector &ea_data_bdr, const bool add=true)
 
virtual void AssembleElementMatrix (const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 Given a particular Finite Element computes the element matrix elmat.
 
virtual void AssembleElementMatrix2 (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &Trans, DenseMatrix &elmat)
 
virtual void AssemblePatchMatrix (const int patch, const FiniteElementSpace &fes, SparseMatrix *&smat)
 
virtual void AssembleFaceMatrix (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Trans, DenseMatrix &elmat)
 
virtual void AssembleFaceMatrix (const FiniteElement &trial_face_fe, const FiniteElement &test_fe1, const FiniteElement &test_fe2, FaceElementTransformations &Trans, DenseMatrix &elmat)
 
virtual void AssembleTraceFaceMatrix (int elem, const FiniteElement &trial_face_fe, const FiniteElement &test_fe, FaceElementTransformations &Trans, DenseMatrix &elmat)
 
virtual void AssembleElementVector (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the BilinearFormIntegrator. Note that the default implementation in the base class is general but not efficient.
 
virtual void AssembleFaceVector (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the BilinearFormIntegrator resulting from a face integral term. Note that the default implementation in the base class is general but not efficient.
 
virtual void AssembleElementGrad (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, DenseMatrix &elmat)
 Assemble the local gradient matrix.
 
virtual void AssembleFaceGrad (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, DenseMatrix &elmat)
 Assemble the local action of the gradient of the NonlinearFormIntegrator resulting from a face integral term.
 
virtual void ComputeElementFlux (const FiniteElement &el, ElementTransformation &Trans, Vector &u, const FiniteElement &fluxelem, Vector &flux, bool with_coef=true, const IntegrationRule *ir=NULL)
 Virtual method required for Zienkiewicz-Zhu type error estimators.
 
virtual real_t ComputeFluxEnergy (const FiniteElement &fluxelem, ElementTransformation &Trans, Vector &flux, Vector *d_energy=NULL)
 Virtual method required for Zienkiewicz-Zhu type error estimators.
 
virtual bool RequiresFaceNormalDerivatives () const
 For bilinear forms on element faces, specifies if the normal derivatives are needed on the faces or just the face restriction.
 
virtual void AddMultPAFaceNormalDerivatives (const Vector &x, const Vector &dxdn, Vector &y, Vector &dydn) const
 Method for partially assembled action.
 
virtual ~BilinearFormIntegrator ()
 
- Public Member Functions inherited from mfem::NonlinearFormIntegrator
virtual void SetIntRule (const IntegrationRule *ir)
 Prescribe a fixed IntegrationRule to use (when ir != NULL) or let the integrator choose (when ir == NULL).
 
void SetIntegrationMode (Mode m)
 
void SetNURBSPatchIntRule (NURBSMeshRules *pr)
 For patchwise integration, SetNURBSPatchIntRule must be called.
 
bool HasNURBSPatchIntRule () const
 
bool Patchwise () const
 
void SetIntegrationRule (const IntegrationRule &ir)
 Prescribe a fixed IntegrationRule to use.
 
void SetPAMemoryType (MemoryType mt)
 
const IntegrationRuleGetIntegrationRule () const
 Get the integration rule of the integrator (possibly NULL).
 
virtual void AssembleElementVector (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the NonlinearFormIntegrator.
 
virtual void AssembleFaceVector (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the NonlinearFormIntegrator resulting from a face integral term.
 
virtual void AssembleElementGrad (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, DenseMatrix &elmat)
 Assemble the local gradient matrix.
 
virtual void AssembleFaceGrad (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, DenseMatrix &elmat)
 Assemble the local action of the gradient of the NonlinearFormIntegrator resulting from a face integral term.
 
virtual real_t GetElementEnergy (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun)
 Compute the local energy.
 
virtual void AssemblePA (const FiniteElementSpace &fes)
 Method defining partial assembly.
 
virtual void AssemblePA (const FiniteElementSpace &trial_fes, const FiniteElementSpace &test_fes)
 
virtual void AssembleGradPA (const Vector &x, const FiniteElementSpace &fes)
 Prepare the integrator for partial assembly (PA) gradient evaluations on the given FE space fes at the state x.
 
virtual real_t GetLocalStateEnergyPA (const Vector &x) const
 Compute the local (to the MPI rank) energy with partial assembly.
 
virtual void AddMultPA (const Vector &x, Vector &y) const
 Method for partially assembled action.
 
virtual void AddMultGradPA (const Vector &x, Vector &y) const
 Method for partially assembled gradient action.
 
virtual void AssembleGradDiagonalPA (Vector &diag) const
 Method for computing the diagonal of the gradient with partial assembly.
 
virtual bool SupportsCeed () const
 Indicates whether this integrator can use a Ceed backend.
 
virtual void AssembleMF (const FiniteElementSpace &fes)
 Method defining fully unassembled operator.
 
virtual void AddMultMF (const Vector &x, Vector &y) const
 
ceed::OperatorGetCeedOp ()
 
virtual ~NonlinearFormIntegrator ()
 

Static Public Member Functions

static const IntegrationRuleGetRule (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &Trans)
 

Protected Attributes

Vector shape
 
Vector te_shape
 
CoefficientQ
 
const FiniteElementSpacefespace
 
Vector pa_data
 
const DofToQuadmaps
 Not owned.
 
const GeometricFactorsgeom
 Not owned.
 
const FaceGeometricFactorsface_geom
 Not owned.
 
int dim
 
int ne
 
int nq
 
int dofs1D
 
int quad1D
 
- Protected Attributes inherited from mfem::NonlinearFormIntegrator
const IntegrationRuleIntRule
 
Mode integrationMode = Mode::ELEMENTWISE
 
NURBSMeshRulespatchRules = nullptr
 
ceed::OperatorceedOp
 
MemoryType pa_mt = MemoryType::DEFAULT
 

Friends

class DGMassInverse
 

Additional Inherited Members

- Public Types inherited from mfem::NonlinearFormIntegrator
enum  Mode { ELEMENTWISE = 0 , PATCHWISE = 1 , PATCHWISE_REDUCED = 2 }
 
- Protected Member Functions inherited from mfem::BilinearFormIntegrator
 BilinearFormIntegrator (const IntegrationRule *ir=NULL)
 
- Protected Member Functions inherited from mfem::NonlinearFormIntegrator
 NonlinearFormIntegrator (const IntegrationRule *ir=NULL)
 

Detailed Description

Class for local mass matrix assembling \(a(u,v) := (Q u, v)\)

Definition at line 2293 of file bilininteg.hpp.

Constructor & Destructor Documentation

◆ MassIntegrator() [1/2]

mfem::MassIntegrator::MassIntegrator ( const IntegrationRule ir = NULL)
inline

Definition at line 2310 of file bilininteg.hpp.

◆ MassIntegrator() [2/2]

mfem::MassIntegrator::MassIntegrator ( Coefficient q,
const IntegrationRule ir = NULL 
)
inline

Construct a mass integrator with coefficient q.

Definition at line 2314 of file bilininteg.hpp.

Member Function Documentation

◆ AddMultMF()

virtual void mfem::MassIntegrator::AddMultMF ( const Vector x,
Vector y 
) const
virtual

Perform the action of integrator on the input x and add the result to the output y. Both x and y are E-vectors, i.e. they represent the element-wise discontinuous version of the FE space.

This method can be called only after the method AssembleMF() has been called.

Reimplemented from mfem::BilinearFormIntegrator.

◆ AddMultPA()

virtual void mfem::MassIntegrator::AddMultPA ( const Vector x,
Vector y 
) const
virtual

Method for partially assembled action.

Perform the action of integrator on the input x and add the result to the output y. Both x and y are E-vectors, i.e. they represent the element-wise discontinuous version of the FE space.

This method can be called only after the method AssemblePA() has been called.

Reimplemented from mfem::BilinearFormIntegrator.

◆ AddMultTransposePA()

virtual void mfem::MassIntegrator::AddMultTransposePA ( const Vector x,
Vector y 
) const
virtual

Method for partially assembled transposed action.

Perform the transpose action of integrator on the input x and add the result to the output y. Both x and y are E-vectors, i.e. they represent the element-wise discontinuous version of the FE space.

This method can be called only after the method AssemblePA() has been called.

Reimplemented from mfem::BilinearFormIntegrator.

◆ AssembleDiagonalMF()

virtual void mfem::MassIntegrator::AssembleDiagonalMF ( Vector diag)
virtual

Assemble diagonal and add it to Vector diag.

Reimplemented from mfem::BilinearFormIntegrator.

◆ AssembleDiagonalPA()

virtual void mfem::MassIntegrator::AssembleDiagonalPA ( Vector diag)
virtual

Assemble diagonal and add it to Vector diag.

Reimplemented from mfem::BilinearFormIntegrator.

◆ AssembleEA()

virtual void mfem::MassIntegrator::AssembleEA ( const FiniteElementSpace fes,
Vector emat,
const bool  add 
)
virtual

Method defining element assembly.

The result of the element assembly is added to the emat Vector if add is true. Otherwise, if add is false, we set emat.

Reimplemented from mfem::BilinearFormIntegrator.

◆ AssembleElementMatrix()

void mfem::MassIntegrator::AssembleElementMatrix ( const FiniteElement el,
ElementTransformation Trans,
DenseMatrix elmat 
)
virtual

Given a particular Finite Element computes the element mass matrix elmat.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 1294 of file bilininteg.cpp.

◆ AssembleElementMatrix2()

void mfem::MassIntegrator::AssembleElementMatrix2 ( const FiniteElement trial_fe,
const FiniteElement test_fe,
ElementTransformation Trans,
DenseMatrix elmat 
)
virtual

Compute the local matrix representation of a bilinear form \(a(u,v)\) defined on different trial (given by \(u\)) and test (given by \(v\)) spaces. The rows in the local matrix correspond to the test dofs and the columns – to the trial dofs.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 1328 of file bilininteg.cpp.

◆ AssembleMF()

virtual void mfem::MassIntegrator::AssembleMF ( const FiniteElementSpace fes)
virtual

Method defining matrix-free assembly.

Used with BilinearFormIntegrators that have different spaces. The result of fully matrix-free assembly is stored internally so that it can be used later in the methods AddMultMF() and AddMultTransposeMF().

Reimplemented from mfem::BilinearFormIntegrator.

◆ AssemblePA() [1/3]

void mfem::BilinearFormIntegrator::AssemblePA ( const FiniteElementSpace fes)
virtual

Method defining partial assembly.

The result of the partial assembly is stored internally so that it can be used later in the methods AddMultPA() and AddMultTransposePA().

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 48 of file bilininteg.cpp.

◆ AssemblePA() [2/3]

virtual void mfem::MassIntegrator::AssemblePA ( const FiniteElementSpace fes)
virtual

Method defining partial assembly.

The result of the partial assembly is stored internally so that it can be used later in the methods AddMultPA() and AddMultTransposePA().

Reimplemented from mfem::BilinearFormIntegrator.

◆ AssemblePA() [3/3]

void mfem::BilinearFormIntegrator::AssemblePA ( const FiniteElementSpace trial_fes,
const FiniteElementSpace test_fes 
)
virtual

Used with BilinearFormIntegrators that have different spaces.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 50 of file bilininteg.cpp.

◆ AssemblePABoundary()

virtual void mfem::MassIntegrator::AssemblePABoundary ( const FiniteElementSpace fes)
virtual

Reimplemented from mfem::BilinearFormIntegrator.

◆ GetCoefficient()

const Coefficient * mfem::MassIntegrator::GetCoefficient ( ) const
inline

Definition at line 2353 of file bilininteg.hpp.

◆ GetRule()

const IntegrationRule & mfem::MassIntegrator::GetRule ( const FiniteElement trial_fe,
const FiniteElement test_fe,
ElementTransformation Trans 
)
static

Definition at line 1366 of file bilininteg.cpp.

◆ SupportsCeed()

bool mfem::MassIntegrator::SupportsCeed ( ) const
inlinevirtual

Indicates whether this integrator can use a Ceed backend.

Reimplemented from mfem::NonlinearFormIntegrator.

Definition at line 2351 of file bilininteg.hpp.

Friends And Related Function Documentation

◆ DGMassInverse

friend class DGMassInverse
friend

Definition at line 2295 of file bilininteg.hpp.

Member Data Documentation

◆ dim

int mfem::MassIntegrator::dim
protected

Definition at line 2307 of file bilininteg.hpp.

◆ dofs1D

int mfem::MassIntegrator::dofs1D
protected

Definition at line 2307 of file bilininteg.hpp.

◆ face_geom

const FaceGeometricFactors* mfem::MassIntegrator::face_geom
protected

Not owned.

Definition at line 2306 of file bilininteg.hpp.

◆ fespace

const FiniteElementSpace* mfem::MassIntegrator::fespace
protected

Definition at line 2302 of file bilininteg.hpp.

◆ geom

const GeometricFactors* mfem::MassIntegrator::geom
protected

Not owned.

Definition at line 2305 of file bilininteg.hpp.

◆ maps

const DofToQuad* mfem::MassIntegrator::maps
protected

Not owned.

Definition at line 2304 of file bilininteg.hpp.

◆ ne

int mfem::MassIntegrator::ne
protected

Definition at line 2307 of file bilininteg.hpp.

◆ nq

int mfem::MassIntegrator::nq
protected

Definition at line 2307 of file bilininteg.hpp.

◆ pa_data

Vector mfem::MassIntegrator::pa_data
protected

Definition at line 2303 of file bilininteg.hpp.

◆ Q

Coefficient* mfem::MassIntegrator::Q
protected

Definition at line 2300 of file bilininteg.hpp.

◆ quad1D

int mfem::MassIntegrator::quad1D
protected

Definition at line 2307 of file bilininteg.hpp.

◆ shape

Vector mfem::MassIntegrator::shape
protected

Definition at line 2298 of file bilininteg.hpp.

◆ te_shape

Vector mfem::MassIntegrator::te_shape
protected

Definition at line 2298 of file bilininteg.hpp.


The documentation for this class was generated from the following files: