Opm::MixedPreconditioner< M, X, Y > Class Template Reference

Wraps c-implementation of mixed-precision preconditioner. More...

#include <PreconditionerWrapper.hpp>

Inheritance diagram for Opm::MixedPreconditioner< M, X, Y >:

Public Types
using	domain_type = X

Public Member Functions
	MixedPreconditioner (const M &A, bool use_dilu=false)
	constructor More...
	~MixedPreconditioner ()
	destructor More...
void	update () override
	Update ilu0/dilu factorization. More...
void	apply (X &x, const Y &y) override
	Mixed-precision ilu0/dilu application. More...
Dune::SolverCategory::Category	category () const override
	Solver category. More...
bool	hasPerfectUpdate () const override
void	pre (X &x, Y &y) override
void	post (X &x) override

Static Public Attributes
static constexpr auto	block_size = domain_type::block_type::dimension

Detailed Description

template<class M, class X, class Y>
class Opm::MixedPreconditioner< M, X, Y >

Wraps c-implementation of mixed-precision preconditioner.

Template Parameters

Vector	the block-vector used by linear operator
M	block-sparse matrix type
X	block-vector input type
Y	block vector output type

Member Typedef Documentation

domain_type

template<class M , class X , class Y >

using Opm::MixedPreconditioner< M, X, Y >::domain_type = X

Constructor & Destructor Documentation

MixedPreconditioner()

template<class M , class X , class Y >

Opm::MixedPreconditioner< M, X, Y >::MixedPreconditioner ( const M &  A, bool  use_dilu = false  )

inline

constructor

Parameters

A	block-sparse matrix
use_dilu	toggle between dilu or ilu0 factorization

References Opm::MixedPreconditioner< M, X, Y >::block_size, bsr_alloc(), bsr_init(), bsr_matrix::colidx, prec_alloc(), prec_init(), bsr_matrix::rowptr, and Opm::MixedPreconditioner< M, X, Y >::update().

~MixedPreconditioner()

template<class M , class X , class Y >

Opm::MixedPreconditioner< M, X, Y >::~MixedPreconditioner ( )

inline

destructor

References bsr_free(), and prec_free().

Member Function Documentation

apply()

template<class M , class X , class Y >

void Opm::MixedPreconditioner< M, X, Y >::apply ( X &  x, const Y &  y  )

override

Mixed-precision ilu0/dilu application.

Parameters

y	input vector
x	output vector
y	input vector
x	output vector

Note

hand-optimized versions are provided for block-sizes 2,3, and 4. A generic implementation is provided for block- sizes > 4

References bsr_matrix::colidx, bsr_matrix::flt, bsr_matrix::ncols, prec_mapply2c(), prec_mapply3c(), prec_mapply4c(), and bsr_matrix::rowptr.

category()

template<class M , class X , class Y >

Dune::SolverCategory::Category Opm::MixedPreconditioner< M, X, Y >::category ( ) const

inlineoverride

Solver category.

hasPerfectUpdate()

template<class M , class X , class Y >

bool Opm::MixedPreconditioner< M, X, Y >::hasPerfectUpdate ( ) const

inlineoverridevirtual

Implements Dune::PreconditionerWithUpdate< X, Y >.

post()

template<class M , class X , class Y >

void Opm::MixedPreconditioner< M, X, Y >::post ( X &  x )

inlineoverride

pre()

template<class M , class X , class Y >

void Opm::MixedPreconditioner< M, X, Y >::pre ( X &  x, Y &  y  )

inlineoverride

update()

template<class M , class X , class Y >

void Opm::MixedPreconditioner< M, X, Y >::update

overridevirtual

Update ilu0/dilu factorization.

Transposes double-precision blocks before factorization. Demotes factors after factorization

Transposes double-precision blocks before factorization. Demotes factors after factorization

Note

hand-optimized versions are provided for block-sizes 2,3, and 4. A generic implementation is provided for block- sizes > 4

Implements Dune::PreconditionerWithUpdate< X, Y >.

References bsr_matrix::colidx, bsr_matrix::dbl, bsr_matrix::nrows, prec_downcast(), prec_ilu0_factorize2(), prec_ilu0_factorize3(), prec_ilu0_factorize4(), and bsr_matrix::rowptr.

Referenced by Opm::MixedPreconditioner< M, X, Y >::MixedPreconditioner().

Member Data Documentation

block_size

template<class M , class X , class Y >

constexpr auto Opm::MixedPreconditioner< M, X, Y >::block_size = domain_type::block_type::dimension

staticconstexpr

Referenced by Opm::MixedPreconditioner< M, X, Y >::MixedPreconditioner().

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

• PreconditionerWrapper.hpp