Belos
Version of the Day
|
#include <BelosPCPGSolMgr.hpp>
Public Member Functions | |
Constructors/Destructor | |
PCPGSolMgr () | |
Empty constructor for PCPGSolMgr. This constructor takes no arguments and sets the default values for the solver. The linear problem must be passed in using setProblem() before solve() is called on this object. In most instances, LinearProblem setProblem(...) methods are used. Solver values may be changed using setParameters(). More... | |
PCPGSolMgr (const Teuchos::RCP< LinearProblem< ScalarType, MV, OP > > &problem, const Teuchos::RCP< Teuchos::ParameterList > &pl) | |
Basic constructor for PCPGSolMgr. The constructor accepts a LinearProblem to be solved and a parameter list of these options: More... | |
virtual | ~PCPGSolMgr () |
Destructor. More... | |
virtual Teuchos::RCP < SolverManager< ScalarType, MV, OP > > | clone () const |
clone for Inverted Injection (DII) More... | |
Accessor methods | |
const LinearProblem < ScalarType, MV, OP > & | getProblem () const |
Get current linear problem being solved for in this object. More... | |
Teuchos::RCP< const Teuchos::ParameterList > | getValidParameters () const |
Get a parameter list containing the valid parameters for this object. More... | |
Teuchos::RCP< const Teuchos::ParameterList > | getCurrentParameters () const |
Get a parameter list containing the current parameters for this object. More... | |
Teuchos::Array< Teuchos::RCP < Teuchos::Time > > | getTimers () const |
Return the timers for this object. More... | |
MagnitudeType | achievedTol () const |
Tolerance achieved by the last solve() invocation. More... | |
int | getNumIters () const |
Get the iteration count for the most recent call to solve() . More... | |
bool | isLOADetected () const |
Return whether a loss of accuracy was detected by this solver during the most current solve. More... | |
Set methods | |
void | setProblem (const Teuchos::RCP< LinearProblem< ScalarType, MV, OP > > &problem) |
Set the linear problem that needs to be solved. More... | |
void | setParameters (const Teuchos::RCP< Teuchos::ParameterList > ¶ms) |
Set the parameters the solver manager should use to solve the linear problem. More... | |
Reset methods | |
void | reset (const ResetType type) |
Performs a reset of the solver manager specified by the ResetType . This informs the solver manager that the solver should prepare for the next call to solve by resetting certain elements of the iterative solver strategy. More... | |
Solver application methods | |
ReturnType | solve () |
The method either solves the problem or decides to quit. On each call, a (possibly null) seed space is used to accelerate convergence. More... | |
Overridden from Teuchos::Describable | |
std::string | description () const |
Method to return description of the PCPG solver manager. More... | |
![]() | |
SolverManagerRequiresRealLapack () | |
virtual | ~SolverManagerRequiresRealLapack () |
![]() | |
SolverManager () | |
Empty constructor. More... | |
virtual | ~SolverManager () |
Destructor. More... | |
virtual void | setUserConvStatusTest (const Teuchos::RCP< StatusTest< ScalarType, MV, OP > > &, const typename StatusTestCombo< ScalarType, MV, OP >::ComboType &=StatusTestCombo< ScalarType, MV, OP >::SEQ) |
Set user-defined convergence status test. More... | |
virtual void | setDebugStatusTest (const Teuchos::RCP< StatusTest< ScalarType, MV, OP > > &) |
Set user-defined debug status test. More... | |
![]() | |
virtual void | describe (FancyOStream &out, const EVerbosityLevel verbLevel=verbLevel_default) const |
void | describe (std::ostream &out, const EVerbosityLevel verbLevel=verbLevel_default) const |
virtual | ~Describable () |
LabeledObject () | |
virtual | ~LabeledObject () |
virtual void | setObjectLabel (const std::string &objectLabel) |
virtual std::string | getObjectLabel () const |
DescribableStreamManipulatorState | describe (const Describable &describable, const EVerbosityLevel verbLevel=Describable::verbLevel_default) |
std::ostream & | operator<< (std::ostream &os, const DescribableStreamManipulatorState &d) |
Additional Inherited Members | |
![]() | |
static const EVerbosityLevel | verbLevel_default |
Definition at line 141 of file BelosPCPGSolMgr.hpp.
Belos::PCPGSolMgr< ScalarType, MV, OP, true >::PCPGSolMgr | ( | ) |
Empty constructor for PCPGSolMgr. This constructor takes no arguments and sets the default values for the solver. The linear problem must be passed in using setProblem() before solve() is called on this object. In most instances, LinearProblem setProblem(...) methods are used. Solver values may be changed using setParameters().
Definition at line 381 of file BelosPCPGSolMgr.hpp.
Belos::PCPGSolMgr< ScalarType, MV, OP, true >::PCPGSolMgr | ( | const Teuchos::RCP< LinearProblem< ScalarType, MV, OP > > & | problem, |
const Teuchos::RCP< Teuchos::ParameterList > & | pl | ||
) |
Basic constructor for PCPGSolMgr. The constructor accepts a LinearProblem to be solved and a parameter list of these options:
int
specifying the number of blocks deflated from the linear system. Default: 2 The parameter distinguishes PCPG from CG.int
specifying the maximum number of blocks saved from old Krylov bases. Default: 16 The parameter distinguishes PCPG from CG.int
specifying the block size to be used by the underlying block conjugate-gradient solver. In PCPC block size = one. Many parameters are meaningless in the unit block size case. Default: 1bool
specifying whether the block size can be modified throughout the solve. Default: true Meaningless with unit block sizeint
specifying the maximum number of iterations the underlying solver is allowed to perform. Default: 1000MagnitudeType
specifying the level that residual norms must reach to decide convergence. Default: 1e-8.string
specifying the desired orthogonalization: DGKS, ICGS, IMGS. Default: "ICGS" Meaningless with unit block sizeMagnitudeType
used by DGKS orthogonalization to determine whether another step of classical Gram-Schmidt is necessary. Default: -1 (use DGKS default) Meaningless with unit block sizeint
specifying how often convergence information should be outputted. Default: -1 (never)bool
specifying whether that only the maximum relative residual norm is printed if convergence information is printed. Default: false Meaningless with unit block sizestd::string
to use as a prefix for the timer labels. Default: "Belos" Definition at line 402 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
Destructor.
Definition at line 201 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
clone for Inverted Injection (DII)
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 204 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
Get current linear problem being solved for in this object.
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 214 of file BelosPCPGSolMgr.hpp.
|
virtual |
Get a parameter list containing the valid parameters for this object.
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 653 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
Get a parameter list containing the current parameters for this object.
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 224 of file BelosPCPGSolMgr.hpp.
|
inline |
Return the timers for this object.
The timers are ordered as follows:
Definition at line 231 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
Tolerance achieved by the last solve()
invocation.
This is the maximum over all right-hand sides' achieved convergence tolerances, and is set whether or not the solve actually managed to achieve the desired convergence tolerance.
Reimplemented from Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 240 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
Get the iteration count for the most recent call to solve()
.
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 245 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
Return whether a loss of accuracy was detected by this solver during the most current solve.
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 251 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
Set the linear problem that needs to be solved.
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 259 of file BelosPCPGSolMgr.hpp.
|
virtual |
Set the parameters the solver manager should use to solve the linear problem.
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 437 of file BelosPCPGSolMgr.hpp.
|
inlinevirtual |
Performs a reset of the solver manager specified by the ResetType
. This informs the solver manager that the solver should prepare for the next call to solve by resetting certain elements of the iterative solver strategy.
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 272 of file BelosPCPGSolMgr.hpp.
|
virtual |
The method either solves the problem or decides to quit. On each call, a (possibly null) seed space is used to accelerate convergence.
The method calls PCPGIter::iterate(), which will return either because a specially constructed status test evaluates to Passed or an exception is thrown. The first Krylov vectors are appended to the seed space.
A return from PCPGIter::iterate() signifies one of the following scenarios:
Implements Belos::SolverManager< ScalarType, MV, OP >.
Definition at line 696 of file BelosPCPGSolMgr.hpp.
|
virtual |
Method to return description of the PCPG solver manager.
Reimplemented from Teuchos::Describable.
Definition at line 1185 of file BelosPCPGSolMgr.hpp.