Dune::PDELab::SubdomainProjectedCoarseSpace< GFS, M, X, PIH > Class Template Reference

This constructs a coarse space from a per-subdomain local basis. More...

#include <dune/pdelab/backend/istl/geneo/subdomainprojectedcoarsespace.hh>

Public Member Functions
	SubdomainProjectedCoarseSpace (const GFS &gfs, const M &AF_exterior_, std::shared_ptr< SubdomainBasis< X > > subdomainbasis, const PIH &parallelhelper, int verbosity=1)
	Constructor. More...
void	restrict (const X &fine, COARSE_V &restricted) const override
	Restricts a vector defined on a subdomain to the coarse space. More...
void	prolongate (const COARSE_V &coarse, X &prolongated) const override
	Prolongates a vector defined on the coarse space to the subdomain. More...
std::shared_ptr< COARSE_M >	get_coarse_system () override
	Returns the matrix representing the coarse basis. More...
rank_type	basis_size () override
	Returns the size of the coarse basis. More...

Detailed Description

template<class GFS, class M, class X, class PIH>
class Dune::PDELab::SubdomainProjectedCoarseSpace< GFS, M, X, PIH >

This constructs a coarse space from a per-subdomain local basis.

The per-subdomain coarse basis is communicated to each subdomain's neighbors, a global coarse system based on those is constructed and distributed to across all processes. In the process, the per-subdomain basis functions are extended by zeros, resulting in a sparse system.

Constructor & Destructor Documentation

SubdomainProjectedCoarseSpace()

template<class GFS , class M , class X , class PIH >

Dune::PDELab::SubdomainProjectedCoarseSpace< GFS, M, X, PIH >::SubdomainProjectedCoarseSpace ( const GFS &  gfs, const M &  AF_exterior_, std::shared_ptr< SubdomainBasis< X > >  subdomainbasis, const PIH &  parallelhelper, int  verbosity = 1  )

inline

Constructor.

Parameters

gfs	Grid function space.
AF_exterior_	Stiffness matrix of the problem to be solved.
subdomainbasis	Per-subdomain coarse basis.
verbosity	Verbosity.

Member Function Documentation

basis_size()

template<class GFS , class M , class X , class PIH >

rank_type Dune::PDELab::SubdomainProjectedCoarseSpace< GFS, M, X, PIH >::basis_size ( )

inlineoverridevirtual

Returns the size of the coarse basis.

Returns

Size of the basis

Implements CoarseSpace< X >.

get_coarse_system()

template<class GFS , class M , class X , class PIH >

std::shared_ptr< COARSE_M > Dune::PDELab::SubdomainProjectedCoarseSpace< GFS, M, X, PIH >::get_coarse_system ( )

inlineoverridevirtual

Returns the matrix representing the coarse basis.

Returns

The coarse matrix

Implements CoarseSpace< X >.

prolongate()

template<class GFS , class M , class X , class PIH >

void Dune::PDELab::SubdomainProjectedCoarseSpace< GFS, M, X, PIH >::prolongate ( const COARSE_V &  coarse, X &  prolongated  ) const

inlineoverridevirtual

Prolongates a vector defined on the coarse space to the subdomain.

Parameters

[in]	v	The coarse space vector to be prolongated
[out]	prolongated	The prolongation in subdomain space.

Implements CoarseSpace< X >.

restrict()

template<class GFS , class M , class X , class PIH >

void Dune::PDELab::SubdomainProjectedCoarseSpace< GFS, M, X, PIH >::restrict ( const X &  fine, COARSE_V &  restricted  ) const

inlineoverridevirtual

Restricts a vector defined on a subdomain to the coarse space.

Parameters

[in]	d	The subdomain space vector to be restricted
[out]	restricted	Resulting restriction in coarse space. Must be of size given by basis_size().

Implements CoarseSpace< X >.

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

• dune/pdelab/backend/istl/geneo/subdomainprojectedcoarsespace.hh