amrex::HypreIJIface Class Reference

Convenience interface for configuring and invoking HYPRE IJ solvers. More...

#include <AMReX_HypreIJIface.H>

Public Types
using	HypreIntType = HYPRE_Int
using	HypreRealType = HYPRE_Real

Public Member Functions
	HypreIJIface (MPI_Comm comm, HypreIntType ilower, HypreIntType iupper, int verbose)
	Construct an IJ interface spanning rows [ilower, iupper].
	~HypreIJIface ()
	HypreIJIface (HypreIJIface const &)=delete
	HypreIJIface (HypreIJIface &&)=delete
HypreIJIface &	operator= (HypreIJIface const &)=delete
HypreIJIface &	operator= (HypreIJIface &&)=delete
void	parse_inputs (const std::string &prefix="hypre")
	Parse runtime options (solver, preconditioner, tolerances).
void	solve (HypreRealType rel_tol, HypreRealType abs_tol, HypreIntType max_iter)
	Solve the linear system using the configured solver/preconditioner.
void	setNeedSetup () noexcept
	Call after changing the matrix so the next solve redoes the setup.
void	setRecomputePreconditioner (bool b) noexcept
HYPRE_IJMatrix	A ()
	IJ matrix instance.
HYPRE_IJVector	b ()
	Right hand side IJ vector instance.
HYPRE_IJVector	x ()
	Solution IJ vector instance.
HypreIntType	getNumIters () const
	Number of iterations taken by the solver to reach the desired tolerance.
HypreRealType	getFinalResidualNorm () const
	Final residual norm after a linear solve.
bool	adjustSingularMatrix () const
HypreIntType	ilower () const
	Lowest global row id owned by this rank.

Detailed Description

Convenience interface for configuring and invoking HYPRE IJ solvers.

Member Typedef Documentation

HypreIntType

using amrex::HypreIJIface::HypreIntType = HYPRE_Int

HypreRealType

using amrex::HypreIJIface::HypreRealType = HYPRE_Real

Constructor & Destructor Documentation

HypreIJIface() [1/3]

amrex::HypreIJIface::HypreIJIface	(	MPI_Comm	comm,
		HypreIntType	ilower,
		HypreIntType	iupper,
		int	verbose
	)

Construct an IJ interface spanning rows [ilower, iupper].

Parameters

comm	MPI communicator.
ilower	Global row id lower bound (inclusive) owned by this rank.
iupper	Global row id upper bound (inclusive) owned by this rank.
verbose	Verbosity level forwarded to HYPRE.

~HypreIJIface()

amrex::HypreIJIface::~HypreIJIface

(

)

HypreIJIface() [2/3]

amrex::HypreIJIface::HypreIJIface ( HypreIJIface const &  )

delete

HypreIJIface() [3/3]

amrex::HypreIJIface::HypreIJIface ( HypreIJIface &&  )

delete

Member Function Documentation

A()

HYPRE_IJMatrix amrex::HypreIJIface::A ( )

inline

IJ matrix instance.

adjustSingularMatrix()

bool amrex::HypreIJIface::adjustSingularMatrix ( ) const

inline

b()

HYPRE_IJVector amrex::HypreIJIface::b ( )

inline

Right hand side IJ vector instance.

getFinalResidualNorm()

HypreRealType amrex::HypreIJIface::getFinalResidualNorm ( ) const

inline

Final residual norm after a linear solve.

getNumIters()

HypreIntType amrex::HypreIJIface::getNumIters ( ) const

inline

Number of iterations taken by the solver to reach the desired tolerance.

ilower()

HypreIntType amrex::HypreIJIface::ilower ( ) const

inline

Lowest global row id owned by this rank.

operator=() [1/2]

HypreIJIface & amrex::HypreIJIface::operator= ( HypreIJIface &&  )

delete

operator=() [2/2]

HypreIJIface & amrex::HypreIJIface::operator= ( HypreIJIface const &  )

delete

parse_inputs()

void amrex::HypreIJIface::parse_inputs

(

const std::string &

prefix = "hypre"

)

Parse runtime options (solver, preconditioner, tolerances).

Parameters

prefix

ParmParse prefix; defaults to the literal "hypre" namespace used for HYPRE options.

setNeedSetup()

void amrex::HypreIJIface::setNeedSetup ( )

inlinenoexcept

Call after changing the matrix so the next solve redoes the setup.

setRecomputePreconditioner()

void amrex::HypreIJIface::setRecomputePreconditioner ( bool  b )

inlinenoexcept

Redo the setup on every solve (default true). Callers that call setNeedSetup when the matrix changes can turn it off.

solve()

void amrex::HypreIJIface::solve	(	HypreRealType	rel_tol,
		HypreRealType	abs_tol,
		HypreIntType	max_iter
	)

Solve the linear system using the configured solver/preconditioner.

Parameters

rel_tol	Relative tolerance.
abs_tol	Absolute tolerance.
max_iter	Iteration limit.

x()

HYPRE_IJVector amrex::HypreIJIface::x ( )

inline

Solution IJ vector instance.

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

• /home/runner/work/amrex/amrex/Src/Extern/HYPRE/AMReX_HypreIJIface.H
• /home/runner/work/amrex/amrex/Src/Extern/HYPRE/AMReX_HypreIJIface.cpp