#include <multigrid.h>

Inheritance diagram for quda::MG:

Collaboration diagram for quda::MG:

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Public Member Functions
	MG (MGParam &param, TimeProfile &profile)

virtual	~MG ()

void	reset (bool refresh=false)
	This method resets the solver, e.g., when a parameter has changed such as the mass. More...

void	dumpNullVectors () const
	Dump the null-space vectors to disk. Will recurse dumping all levels. More...

void	createSmoother ()
	Create the smoothers. More...

void	destroySmoother ()
	Destroy the smoothers. More...

void	createCoarseDirac ()
	Create the coarse dirac operator. More...

void	createCoarseSolver ()
	Create the solver wrapper. More...

void	destroyCoarseSolver ()
	Destroy the solver wrapper. More...

void	verify ()

void	operator() (ColorSpinorField &out, ColorSpinorField &in)

void	loadVectors (std::vector< ColorSpinorField *> &B)
	Load the null space vectors in from file. More...

void	saveVectors (const std::vector< ColorSpinorField *> &B) const
	Save the null space vectors in from file. More...

void	generateNullVectors (std::vector< ColorSpinorField *> &B, bool refresh=false)
	Generate the null-space vectors. More...

void	generateEigenVectors ()
	Generate lowest eigenvectors. More...

void	buildFreeVectors (std::vector< ColorSpinorField *> &B)
	Build free-field null-space vectors. More...

double	flops () const
	Return the total flops done on this and all coarser levels. More...

Public Member Functions inherited from quda::Solver
	Solver (SolverParam &param, TimeProfile &profile)

virtual	~Solver ()

virtual void	blocksolve (ColorSpinorField &out, ColorSpinorField &in)

bool	convergence (double r2, double hq2, double r2_tol, double hq_tol)

bool	convergenceHQ (double r2, double hq2, double r2_tol, double hq_tol)
	Test for HQ solver convergence – ignore L2 residual. More...

bool	convergenceL2 (double r2, double hq2, double r2_tol, double hq_tol)
	Test for L2 solver convergence – ignore HQ residual. More...

void	PrintStats (const char *name, int k, double r2, double b2, double hq2)
	Prints out the running statistics of the solver (requires a verbosity of QUDA_VERBOSE) More...

void	PrintSummary (const char *name, int k, double r2, double b2, double r2_tol, double hq_tol)
	Prints out the summary of the solver convergence (requires a verbosity of QUDA_SUMMARIZE). Assumes SolverParam.true_res and SolverParam.true_res_hq has been set. More...

void	constructDeflationSpace (const ColorSpinorField &meta, const DiracMatrix &mat, bool svd)
	Constructs the deflation space. More...

Private Member Functions
void	pushLevel (int level) const
	Helper function called on entry to each MG function. More...

void	popLevel (int level) const
	Helper function called on exit to each MG member function. More...

Private Attributes
MGParam &	param

Transfer *	transfer

bool	resetTransfer

Solver *	presmoother

Solver *	postsmoother

TimeProfile &	profile_global

TimeProfile	profile

char	prefix [128]

char	coarse_prefix [128]

MG *	coarse

Solver *	coarse_solver

MGParam *	param_coarse

SolverParam *	param_presmooth

SolverParam *	param_postsmooth

SolverParam *	param_coarse_solver

std::vector< ColorSpinorField * > *	B_coarse

ColorSpinorField *	r

ColorSpinorField *	b_tilde

ColorSpinorField *	r_coarse

ColorSpinorField *	x_coarse

ColorSpinorField *	tmp_coarse

ColorSpinorField *	tmp2_coarse

const Dirac *	diracResidual

const Dirac *	diracSmoother

const Dirac *	diracSmootherSloppy

Dirac *	diracCoarseResidual

Dirac *	diracCoarseSmoother

Dirac *	diracCoarseSmootherSloppy

DiracMatrix *	matCoarseResidual

DiracMatrix *	matCoarseSmoother

DiracMatrix *	matCoarseSmootherSloppy

RNG *	rng

Additional Inherited Members
Static Public Member Functions inherited from quda::Solver
static Solver *	create (SolverParam &param, DiracMatrix &mat, DiracMatrix &matSloppy, DiracMatrix &matPrecon, TimeProfile &profile)

static double	stopping (double tol, double b2, QudaResidualType residual_type)
	Set the solver L2 stopping condition. More...

Public Attributes inherited from quda::Solver
EigenSolver *	eig_solve

bool	deflate_init = false

std::vector< ColorSpinorField * >	defl_tmp1

std::vector< ColorSpinorField * >	defl_tmp2

Protected Attributes inherited from quda::Solver
SolverParam &	param

TimeProfile &	profile

int	node_parity

Detailed Description

Adaptive Multigrid solver

Definition at line 177 of file multigrid.h.

Constructor & Destructor Documentation

◆ MG()

quda::MG::MG	(	MGParam &	param,
		TimeProfile &	profile
	)

Constructor for MG class

Parameters

param	MGParam struct that defines all meta data
profile	Timeprofile instance used to profile

Definition at line 14 of file multigrid.cpp.

References quda::MGParam::B, b_tilde, buildFreeVectors(), quda::MGParam::coarse_grid_solution_type, QudaMultigridParam_s::compute_null_vector, quda::ColorSpinorParam::create, quda::ColorSpinorField::Create(), csParam, QudaInvertParam_s::cuda_prec_sloppy, errorQuda, quda::MGParam::evals, quda::ColorSpinorParam::gammaBasis, QudaMultigridParam_s::generate_all_levels, generateEigenVectors(), generateNullVectors(), quda::RNG::Init(), QudaMultigridParam_s::invert_param, quda::MGParam::level, loadVectors(), quda::ColorSpinorParam::location, quda::MGParam::location, quda::MGParam::mg_global, quda::MGParam::Nlevel, QudaMultigridParam_s::num_setup_iter, popLevel(), prefix, pushLevel(), QUDA_BOOLEAN_TRUE, QUDA_COMPUTE_NULL_VECTOR_YES, QUDA_CUDA_FIELD_LOCATION, QUDA_DEGRAND_ROSSI_GAMMA_BASIS, QUDA_DIRECT_PC_SOLVE, QUDA_INVALID_PRECISION, QUDA_MATPC_SOLUTION, QUDA_MAX_MG_LEVEL, QUDA_NOISE_UNIFORM, QUDA_NULL_FIELD_CREATE, QUDA_PARITY_SITE_SUBSET, QUDA_UKQCD_GAMMA_BASIS, r, reset(), rng, quda::ColorSpinorParam::setPrecision(), quda::LatticeFieldParam::siteSubset, quda::MGParam::smoother_solve_type, quda::spinorNoise(), transfer, QudaMultigridParam_s::use_eig_solver, QudaMultigridParam_s::vec_infile, QudaMultigridParam_s::vec_load, and quda::LatticeFieldParam::x.

Referenced by reset().

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◆ ~MG()

quda::MG::~MG ( )

virtual

Destructor for MG class. Frees any existing coarse grid MG instance

Definition at line 546 of file multigrid.cpp.

References B_coarse, b_tilde, coarse, coarse_solver, quda::MGParam::cycle_type, diracCoarseResidual, diracCoarseSmoother, diracCoarseSmootherSloppy, getVerbosity(), quda::MGParam::level, matCoarseResidual, matCoarseSmoother, matCoarseSmootherSloppy, quda::MGParam::mg_global, QudaMultigridParam_s::n_vec, quda::MGParam::Nlevel, quda::MGParam::Nvec, param, param_coarse, param_coarse_solver, param_postsmooth, param_presmooth, popLevel(), postsmoother, presmoother, quda::TimeProfile::Print(), profile, pushLevel(), QUDA_DIRECT_PC_SOLVE, QUDA_MG_CYCLE_RECURSIVE, QUDA_VERBOSE, r, r_coarse, quda::RNG::Release(), rng, quda::MGParam::smoother_solve_type, tmp2_coarse, tmp_coarse, transfer, and x_coarse.

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Member Function Documentation

◆ buildFreeVectors()

void quda::MG::buildFreeVectors ( std::vector< ColorSpinorField *> & B )

Build free-field null-space vectors.

Parameters

B	Free-field null-space vectors

Definition at line 1241 of file multigrid.cpp.

References quda::ax(), quda::ColorSpinorParam::create, quda::ColorSpinorField::Create(), csParam, errorQuda, getVerbosity(), quda::MGParam::level, quda::MGParam::mg_global, Ncolor, quda::norm2(), Nspin, param, popLevel(), QudaMultigridParam_s::post_orthonormalize, printfQuda, pushLevel(), QUDA_CONSTANT_SOURCE, QUDA_CORNER_SOURCE, QUDA_VERBOSE, QUDA_ZERO_FIELD_CREATE, quda::s, quda::ColorSpinorField::Source(), quda::sqrt(), tmp, xD, quda::blas::xpy(), and quda::zero().

Referenced by MG().

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◆ createCoarseDirac()

void quda::MG::createCoarseDirac ( )

Create the coarse dirac operator.

Definition at line 334 of file multigrid.cpp.

Referenced by reset().

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◆ createCoarseSolver()

void quda::MG::createCoarseSolver ( )

Create the solver wrapper.

Definition at line 436 of file multigrid.cpp.

Referenced by reset().

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◆ createSmoother()

void quda::MG::createSmoother ( )

Create the smoothers.

Definition at line 276 of file multigrid.cpp.

Referenced by generateNullVectors(), and reset().

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◆ destroyCoarseSolver()

void quda::MG::destroyCoarseSolver ( )

Destroy the solver wrapper.

Definition at line 415 of file multigrid.cpp.

References coarse_solver, quda::MGParam::cycle_type, errorQuda, quda::MGParam::level, quda::MGParam::Nlevel, param, param_coarse_solver, popLevel(), pushLevel(), QUDA_MG_CYCLE_RECURSIVE, and QUDA_MG_CYCLE_VCYCLE.

Referenced by createCoarseSolver(), and reset().

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◆ destroySmoother()

void quda::MG::destroySmoother ( )

Destroy the smoothers.

Definition at line 249 of file multigrid.cpp.

References quda::MGParam::level, param, param_postsmooth, param_presmooth, popLevel(), postsmoother, presmoother, and pushLevel().

Referenced by createSmoother(), and reset().

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◆ dumpNullVectors()

void quda::MG::dumpNullVectors ( ) const

Dump the null-space vectors to disk. Will recurse dumping all levels.

Definition at line 1045 of file multigrid.cpp.

References quda::MGParam::B, coarse, dumpNullVectors(), quda::MGParam::level, quda::MGParam::Nlevel, param, and saveVectors().

Referenced by dumpMultigridQuda(), and dumpNullVectors().

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◆ flops()

double quda::MG::flops ( ) const

virtual

Return the total flops done on this and all coarser levels.

Reimplemented from quda::Solver.

Definition at line 597 of file multigrid.cpp.

References coarse, quda::Transfer::flops(), flops(), quda::SolverParam::gflops, quda::MGParam::level, quda::MGParam::Nlevel, param, param_coarse_solver, param_postsmooth, param_presmooth, and transfer.

Referenced by flops().

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◆ generateEigenVectors()

void quda::MG::generateEigenVectors ( )

Generate lowest eigenvectors.

Definition at line 1418 of file multigrid.cpp.

References quda::MGParam::B, quda::EigenSolver::create(), quda::ColorSpinorParam::create, quda::ColorSpinorField::Create(), csParam, QudaInvertParam_s::cuda_prec_sloppy, dagger, diracResidual, QudaMultigridParam_s::eig_param, quda::Solver::eig_solve, quda::ColorSpinorParam::gammaBasis, QudaMultigridParam_s::invert_param, quda::MGParam::level, mat(), quda::MGParam::mg_global, QudaEigParam_s::nConv, param, popLevel(), profile, pushLevel(), QUDA_INVALID_PRECISION, QUDA_UKQCD_GAMMA_BASIS, QUDA_ZERO_FIELD_CREATE, saveVectors(), quda::ColorSpinorParam::setPrecision(), QudaEigParam_s::use_dagger, QudaEigParam_s::use_norm_op, and QudaMultigridParam_s::vec_outfile.

Referenced by MG(), and verify().

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◆ generateNullVectors()

void quda::MG::generateNullVectors	(	std::vector< ColorSpinorField *> &	B,
		bool	refresh = `false`
	)

Generate the null-space vectors.

Parameters

B	Generated null-space vectors
refresh	Whether we refreshing pre-exising vectors or starting afresh

Definition at line 1051 of file multigrid.cpp.

Referenced by generateNullVectors(), MG(), and reset().

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◆ loadVectors()

void quda::MG::loadVectors ( std::vector< ColorSpinorField *> & B )

Load the null space vectors in from file.

Parameters

B	Loaded null-space vectors (pre-allocated)

Definition at line 1013 of file multigrid.cpp.

References quda::MGParam::level, quda::EigenSolver::loadVectors(), quda::MGParam::mg_global, QudaMultigridParam_s::n_vec, param, popLevel(), profile_global, pushLevel(), quda::QUDA_PROFILE_INIT, quda::QUDA_PROFILE_IO, and QudaMultigridParam_s::vec_infile.

Referenced by MG().

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◆ operator()()

void quda::MG::operator()	(	ColorSpinorField &	out,
		ColorSpinorField &	in
	)

virtual

This applies the V-cycle to the residual vector returning the residual vector

Parameters

out	The solution vector
in	The residual vector (or equivalently the right hand side vector)

Implements quda::Solver.

Definition at line 891 of file multigrid.cpp.

References axpby(), b_tilde, quda::MGParam::coarse_grid_solution_type, diracSmoother, errorQuda, quda::ColorSpinorField::Even(), in, QudaMultigridParam_s::invert_param, quda::MGParam::level, matpc_type, QudaInvertParam_s::matpc_type, quda::MGParam::matResidual, quda::MGParam::mg_global, quda::MGParam::Nlevel, quda::norm2(), out, quda::Transfer::P(), param, parity, popOutputPrefix(), postsmoother, prefix, quda::Dirac::prepare(), presmoother, printfQuda, pushOutputPrefix(), QUDA_DIRECT_PC_SOLVE, QUDA_DIRECT_SOLVE, QUDA_EVEN_PARITY, QUDA_FULL_SITE_SUBSET, QUDA_MAT_SOLUTION, QUDA_MATPC_EVEN_EVEN, QUDA_MATPC_EVEN_EVEN_ASYMMETRIC, QUDA_MATPC_SOLUTION, QUDA_ODD_PARITY, QUDA_PARITY_SITE_SUBSET, quda::Transfer::R(), r, r_coarse, quda::Dirac::reconstruct(), quda::Transfer::setSiteSubset(), quda::ColorSpinorField::SiteSubset(), quda::MGParam::smoother_solve_type, transfer, x_coarse, quda::blas::xmyNorm(), quda::blas::xpy(), and quda::zero().

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◆ popLevel()

void quda::MG::popLevel ( int level ) const

private

Helper function called on exit to each MG member function.

Parameters

[in] level The level we working on

Definition at line 242 of file multigrid.cpp.

References popOutputPrefix(), popVerbosity(), and postTrace.

Referenced by buildFreeVectors(), createCoarseDirac(), createCoarseSolver(), createSmoother(), destroyCoarseSolver(), destroySmoother(), generateEigenVectors(), generateNullVectors(), loadVectors(), MG(), reset(), saveVectors(), verify(), and ~MG().

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◆ pushLevel()

void quda::MG::pushLevel ( int level ) const

private

Helper function called on entry to each MG function.

Parameters

[in] level The level we working on

Definition at line 235 of file multigrid.cpp.

References quda::MGParam::mg_global, param, postTrace, prefix, pushOutputPrefix(), pushVerbosity(), and QudaMultigridParam_s::verbosity.

Referenced by buildFreeVectors(), createCoarseDirac(), createCoarseSolver(), createSmoother(), destroyCoarseSolver(), destroySmoother(), generateEigenVectors(), generateNullVectors(), loadVectors(), MG(), reset(), saveVectors(), verify(), and ~MG().

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◆ reset()

void quda::MG::reset ( bool refresh = false )

This method resets the solver, e.g., when a parameter has changed such as the mass.

Parameters

Whether we are refreshing the null-space components or just updating the operators

Definition at line 117 of file multigrid.cpp.

Referenced by generateNullVectors(), MG(), reset(), and updateMultigridQuda().

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◆ saveVectors()

void quda::MG::saveVectors ( const std::vector< ColorSpinorField *> & B ) const

Save the null space vectors in from file.

Parameters

B	Save null-space vectors from here

Definition at line 1029 of file multigrid.cpp.

References quda::MGParam::level, quda::MGParam::mg_global, QudaMultigridParam_s::n_vec, param, popLevel(), profile_global, pushLevel(), quda::QUDA_PROFILE_INIT, quda::QUDA_PROFILE_IO, quda::EigenSolver::saveVectors(), and QudaMultigridParam_s::vec_outfile.

Referenced by dumpNullVectors(), generateEigenVectors(), and generateNullVectors().

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◆ verify()

void quda::MG::verify ( )

This method verifies the correctness of the MG method. It checks:

Null-space vectors are exactly preserved: v_k = P R v_k
Any coarse vector is exactly preserved on the fine grid: eta_c = R P eta_c
The emulated coarse Dirac operator matches the native one: D_c = R D P

Verification that the constructed multigrid operator is valid

Definition at line 627 of file multigrid.cpp.

References quda::MGParam::B, quda::blas::cDotProduct(), coarse, quda::MGParam::coarse_grid_solution_type, QudaMultigridParam_s::coarse_grid_solution_type, comm_barrier(), comm_rank(), quda::ColorSpinorParam::create, quda::ColorSpinorField::Create(), csParam, diracCoarseResidual, diracCoarseSmoother, diracResidual, diracSmoother, dot(), quda::Dirac::DslashXpay(), errorQuda, quda::ColorSpinorField::Even(), generateEigenVectors(), quda::MGParam::geoBlockSize, getVerbosity(), kappa, quda::Dirac::Kappa(), quda::MGParam::level, quda::MGParam::location, QudaMultigridParam_s::location, quda::MGParam::matResidual, quda::Dirac::MdagM(), quda::MGParam::mg_global, quda::Dirac::Mu(), QudaMultigridParam_s::mu_factor, quda::MGParam::Nlevel, quda::norm2(), quda::MGParam::Nvec, quda::ColorSpinorField::Odd(), quda::Transfer::P(), param, param_coarse, popLevel(), prec, quda::LatticeFieldParam::Precision(), quda::LatticeField::Precision(), QudaMultigridParam_s::precision_null, prefix, printfQuda, quda::ColorSpinorField::PrintVector(), pushLevel(), QUDA_CUDA_FIELD_LOCATION, QUDA_DIRECT_PC_SOLVE, QUDA_EVEN_PARITY, QUDA_HALF_PRECISION, QUDA_MATPC_SOLUTION, QUDA_NOISE_UNIFORM, QUDA_NULL_FIELD_CREATE, QUDA_ODD_PARITY, QUDA_QUARTER_PRECISION, QUDA_SINGLE_PRECISION, QUDA_SUMMARIZE, QUDA_VERBOSE, quda::Transfer::R(), r, r_coarse, rng, QudaMultigridParam_s::run_low_mode_check, QudaMultigridParam_s::run_oblique_proj_check, setOutputPrefix(), quda::MGParam::smoother_solve_type, QudaMultigridParam_s::smoother_solve_type, quda::MGParam::spinBlockSize, quda::spinorNoise(), quda::sqrt(), tmp1, tmp2, tmp_coarse, tol, transfer, quda::ColorSpinorField::TwistFlavor(), quda::Transfer::Vectors(), verify(), quda::ColorSpinorField::Volume(), x_coarse, quda::blas::xmyNorm(), and quda::zero().

Referenced by reset(), and verify().

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Member Data Documentation

◆ B_coarse

std::vector<ColorSpinorField*>* quda::MG::B_coarse

private

The coarse-grid representation of the null space vectors

Definition at line 223 of file multigrid.h.

Referenced by generateNullVectors(), reset(), and ~MG().

◆ b_tilde

ColorSpinorField* quda::MG::b_tilde

private

Projected source vector for preconditioned syste, else just points to source

Definition at line 229 of file multigrid.h.

Referenced by MG(), operator()(), and ~MG().

◆ coarse

MG* quda::MG::coarse

private

This is the next lower level

Definition at line 205 of file multigrid.h.

Referenced by createCoarseSolver(), dumpNullVectors(), flops(), generateNullVectors(), reset(), verify(), and ~MG().

◆ coarse_prefix

char quda::MG::coarse_prefix[128]

private

Prefix label used for printf on next coarse level

Definition at line 202 of file multigrid.h.

Referenced by createCoarseSolver().

◆ coarse_solver

Solver* quda::MG::coarse_solver

private

The coarse grid solver - this either points at "coarse" or a solver preconditioned by "coarse"

Definition at line 208 of file multigrid.h.

Referenced by createCoarseSolver(), destroyCoarseSolver(), and ~MG().

◆ diracCoarseResidual

Dirac* quda::MG::diracCoarseResidual

private

The coarse operator used for computing inter-grid residuals

Definition at line 253 of file multigrid.h.

Referenced by createCoarseDirac(), verify(), and ~MG().

◆ diracCoarseSmoother

Dirac* quda::MG::diracCoarseSmoother

private

The coarse operator used for doing smoothing

Definition at line 256 of file multigrid.h.

Referenced by createCoarseDirac(), verify(), and ~MG().

◆ diracCoarseSmootherSloppy

Dirac* quda::MG::diracCoarseSmootherSloppy

private

The coarse operator used for doing sloppy smoothing

Definition at line 259 of file multigrid.h.

Referenced by createCoarseDirac(), and ~MG().

◆ diracResidual

const Dirac* quda::MG::diracResidual

private

The fine operator used for computing inter-grid residuals

Definition at line 244 of file multigrid.h.

Referenced by createCoarseDirac(), generateEigenVectors(), reset(), and verify().

◆ diracSmoother

const Dirac* quda::MG::diracSmoother

private

The fine operator used for doing smoothing

Definition at line 247 of file multigrid.h.

Referenced by createCoarseDirac(), generateNullVectors(), operator()(), reset(), and verify().

◆ diracSmootherSloppy

const Dirac* quda::MG::diracSmootherSloppy

private

The fine operator used for doing sloppy smoothing

Definition at line 250 of file multigrid.h.

Referenced by generateNullVectors(), and reset().

◆ matCoarseResidual

DiracMatrix* quda::MG::matCoarseResidual

private

Wrapper for the residual coarse grid operator

Definition at line 262 of file multigrid.h.

Referenced by createCoarseDirac(), createCoarseSolver(), reset(), and ~MG().

◆ matCoarseSmoother

DiracMatrix* quda::MG::matCoarseSmoother

private

Wrapper for the smoothing coarse grid operator

Definition at line 265 of file multigrid.h.

Referenced by createCoarseDirac(), createCoarseSolver(), reset(), and ~MG().

◆ matCoarseSmootherSloppy

DiracMatrix* quda::MG::matCoarseSmootherSloppy

private

Wrapper for the sloppy smoothing coarse grid operator

Definition at line 268 of file multigrid.h.

Referenced by createCoarseDirac(), reset(), and ~MG().

◆ param

MGParam& quda::MG::param

private

Local copy of the multigrid metadata

Definition at line 181 of file multigrid.h.

Referenced by buildFreeVectors(), createCoarseDirac(), createCoarseSolver(), createSmoother(), destroyCoarseSolver(), destroySmoother(), dumpNullVectors(), flops(), generateEigenVectors(), generateNullVectors(), loadVectors(), operator()(), pushLevel(), reset(), saveVectors(), verify(), and ~MG().

◆ param_coarse

MGParam* quda::MG::param_coarse

private

Storage for the parameter struct for the coarse grid

Definition at line 211 of file multigrid.h.

Referenced by reset(), verify(), and ~MG().

◆ param_coarse_solver

SolverParam* quda::MG::param_coarse_solver

private

Storage for the parameter struct for the coarse solver

Definition at line 220 of file multigrid.h.

Referenced by createCoarseSolver(), destroyCoarseSolver(), flops(), reset(), and ~MG().

◆ param_postsmooth

SolverParam* quda::MG::param_postsmooth

private

Storage for the parameter struct for the post-smoother

Definition at line 217 of file multigrid.h.

Referenced by createSmoother(), destroySmoother(), flops(), and ~MG().

◆ param_presmooth

SolverParam* quda::MG::param_presmooth

private

Storage for the parameter struct for the pre-smoother

Definition at line 214 of file multigrid.h.

Referenced by createSmoother(), destroySmoother(), flops(), and ~MG().

◆ postsmoother

Solver * quda::MG::postsmoother

private

Definition at line 190 of file multigrid.h.

Referenced by createSmoother(), destroySmoother(), operator()(), and ~MG().

◆ prefix

char quda::MG::prefix[128]

private

Prefix label used for printf at this level

Definition at line 199 of file multigrid.h.

Referenced by MG(), operator()(), pushLevel(), reset(), and verify().

◆ presmoother

Solver* quda::MG::presmoother

private

This is the smoother used

Definition at line 190 of file multigrid.h.

Referenced by createCoarseSolver(), createSmoother(), destroySmoother(), operator()(), and ~MG().

◆ profile

TimeProfile quda::MG::profile

private

TimeProfile for this level

Definition at line 196 of file multigrid.h.

Referenced by createCoarseSolver(), createSmoother(), generateEigenVectors(), generateNullVectors(), reset(), and ~MG().

◆ profile_global

TimeProfile& quda::MG::profile_global

private

TimeProfile for all levels (refers to profile from parent solver)

Definition at line 193 of file multigrid.h.

Referenced by loadVectors(), reset(), and saveVectors().

◆ r

ColorSpinorField* quda::MG::r

private

Residual vector

Definition at line 226 of file multigrid.h.

Referenced by generateNullVectors(), MG(), operator()(), reset(), verify(), and ~MG().

◆ r_coarse

ColorSpinorField* quda::MG::r_coarse

private

Coarse residual vector

Definition at line 232 of file multigrid.h.

Referenced by createCoarseSolver(), operator()(), reset(), verify(), and ~MG().

◆ resetTransfer

bool quda::MG::resetTransfer

private

This tell to reset() if transfer needs to be rebuilt

Definition at line 187 of file multigrid.h.

Referenced by generateNullVectors(), and reset().

◆ rng

RNG* quda::MG::rng

private

Parallel hyper-cubic random number generator for generating null-space vectors

Definition at line 271 of file multigrid.h.

Referenced by MG(), reset(), verify(), and ~MG().

◆ tmp2_coarse

ColorSpinorField* quda::MG::tmp2_coarse

private

Coarse temporary vector

Definition at line 241 of file multigrid.h.

Referenced by createCoarseDirac(), reset(), and ~MG().

◆ tmp_coarse

ColorSpinorField* quda::MG::tmp_coarse

private

Coarse temporary vector

Definition at line 238 of file multigrid.h.

Referenced by createCoarseDirac(), reset(), verify(), and ~MG().

◆ transfer

Transfer* quda::MG::transfer

private

This is the transfer operator that defines the prolongation and restriction operators

Definition at line 184 of file multigrid.h.

Referenced by createCoarseDirac(), flops(), generateNullVectors(), MG(), operator()(), reset(), verify(), and ~MG().

◆ x_coarse

ColorSpinorField* quda::MG::x_coarse

private

Coarse solution vector

Definition at line 235 of file multigrid.h.

Referenced by operator()(), reset(), verify(), and ~MG().

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

include/multigrid.h
lib/multigrid.cpp

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MG()

◆ ~MG()

Member Function Documentation

◆ buildFreeVectors()

◆ createCoarseDirac()

◆ createCoarseSolver()

◆ createSmoother()

◆ destroyCoarseSolver()

◆ destroySmoother()

◆ dumpNullVectors()

◆ flops()

◆ generateEigenVectors()

◆ generateNullVectors()

◆ loadVectors()

◆ operator()()

◆ popLevel()

◆ pushLevel()

◆ reset()

◆ saveVectors()

◆ verify()

Member Data Documentation

◆ B_coarse

◆ b_tilde

◆ coarse

◆ coarse_prefix

◆ coarse_solver

◆ diracCoarseResidual

◆ diracCoarseSmoother

◆ diracCoarseSmootherSloppy

◆ diracResidual

◆ diracSmoother

◆ diracSmootherSloppy

◆ matCoarseResidual

◆ matCoarseSmoother

◆ matCoarseSmootherSloppy

◆ param

◆ param_coarse

◆ param_coarse_solver

◆ param_postsmooth

◆ param_presmooth

◆ postsmoother

◆ prefix

◆ presmoother

◆ profile

◆ profile_global

◆ r

◆ r_coarse

◆ resetTransfer

◆ rng

◆ tmp2_coarse

◆ tmp_coarse

◆ transfer

◆ x_coarse