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Belos::BlockCGIter< ScalarType, MV, OP, true > Class Template Reference

Partial specialization for ScalarType types for which Teuchos::LAPACK has a valid implementation. More...

#include <BelosBlockCGIter.hpp>

Inheritance diagram for Belos::BlockCGIter< ScalarType, MV, OP, true >:
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Public Types

typedef MultiVecTraits
< ScalarType, MV > 		MVT
 
typedef OperatorTraits
< ScalarType, MV, OP > 		OPT
 
typedef Teuchos::ScalarTraits
< ScalarType > 		SCT
 
typedef SCT::magnitudeType MagnitudeType
 

Public Member Functions

Constructors/Destructor
 BlockCGIter (const Teuchos::RCP< LinearProblem< ScalarType, MV, OP > > &problem, const Teuchos::RCP< OutputManager< ScalarType > > &printer, const Teuchos::RCP< StatusTest< ScalarType, MV, OP > > &tester, const Teuchos::RCP< MatOrthoManager< ScalarType, MV, OP > > &ortho, Teuchos::ParameterList &params)
 BlockCGIter constructor with linear problem, solver utilities, and parameter list of solver options. More...
 
virtual ~BlockCGIter ()
 Destructor. More...
 
Solver methods
void iterate ()
 This method performs BlockCG iterations until the status test indicates the need to stop or an error occurs (in which case, an std::exception is thrown). More...
 
void initializeCG (CGIterationState< ScalarType, MV > &newstate)
 Initialize the solver to an iterate, providing a complete state. More...
 
void initialize ()
 Initialize the solver with the initial vectors from the linear problem or random data. More...
 
CGIterationState< ScalarType, MV > getState () const
 Get the current state of the linear solver. More...
 
Status methods
int getNumIters () const
 Get the current iteration count. More...
 
void resetNumIters (int iter=0)
 Reset the iteration count. More...
 
Teuchos::RCP< const MV > getNativeResiduals (std::vector< MagnitudeType > *) const
 Get the norms of the residuals native to the solver. More...
 
Teuchos::RCP< MV > getCurrentUpdate () const
 Get the current update to the linear system. More...
 
Accessor methods
const LinearProblem
< ScalarType, MV, OP > & 		getProblem () const
 Get a constant reference to the linear problem. More...
 
int getBlockSize () const
 Get the block size to be used by the iterative solver in solving this linear problem. More...
 
void setBlockSize (int blockSize)
 Set the block size to be used by the iterative solver in solving this linear problem. More...
 
bool isInitialized ()
 States whether the solver has been initialized or not. More...
 
void setDoCondEst (bool)
 Sets whether or not to store the diagonal for condition estimation. More...
 
Teuchos::ArrayView< MagnitudeType > getDiag ()
 Gets the diagonal for condition estimation (NOT_IMPLEMENTED) More...
 
Teuchos::ArrayView< MagnitudeType > getOffDiag ()
 Gets the off-diagonal for condition estimation (NOT_IMPLEMENTED) More...
 
State methods
- Public Member Functions inherited from Belos::Iteration< ScalarType, MV, OP >
 Iteration ()
 Default Constructor. More...
 
virtual ~Iteration ()
 Destructor. More...
 
virtual Teuchos::RCP< const MV > getNativeResiduals (std::vector< typename Teuchos::ScalarTraits< ScalarType >::magnitudeType > *norms) const =0
 Get the residuals native to the solver. More...
 

Detailed Description

template<class ScalarType, class MV, class OP>
class Belos::BlockCGIter< ScalarType, MV, OP, true >

Partial specialization for ScalarType types for which Teuchos::LAPACK has a valid implementation.

This is the (non-stub) actual implementation of BlockCGIter.

Definition at line 133 of file BelosBlockCGIter.hpp.

Member Typedef Documentation

template<class ScalarType , class MV , class OP >
typedef MultiVecTraits<ScalarType,MV> Belos::BlockCGIter< ScalarType, MV, OP, true >::MVT

Definition at line 140 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
typedef OperatorTraits<ScalarType,MV,OP> Belos::BlockCGIter< ScalarType, MV, OP, true >::OPT

Definition at line 141 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
typedef Teuchos::ScalarTraits<ScalarType> Belos::BlockCGIter< ScalarType, MV, OP, true >::SCT

Definition at line 142 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
typedef SCT::magnitudeType Belos::BlockCGIter< ScalarType, MV, OP, true >::MagnitudeType

Definition at line 143 of file BelosBlockCGIter.hpp.

Constructor & Destructor Documentation

template<class ScalarType , class MV , class OP >
Belos::BlockCGIter< ScalarType, MV, OP, true >::BlockCGIter ( const Teuchos::RCP< LinearProblem< ScalarType, MV, OP > > &  problem,
const Teuchos::RCP< OutputManager< ScalarType > > &  printer,
const Teuchos::RCP< StatusTest< ScalarType, MV, OP > > &  tester,
const Teuchos::RCP< MatOrthoManager< ScalarType, MV, OP > > &  ortho,
Teuchos::ParameterList &  params 
)

BlockCGIter constructor with linear problem, solver utilities, and parameter list of solver options.

This constructor takes pointers required by the linear solver iteration, in addition to a parameter list of options for the linear solver.

Definition at line 332 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
virtual Belos::BlockCGIter< ScalarType, MV, OP, true >::~BlockCGIter ( )
inlinevirtual

Destructor.

Definition at line 160 of file BelosBlockCGIter.hpp.

Member Function Documentation

template<class ScalarType , class MV , class OP >
void Belos::BlockCGIter< ScalarType, MV, OP, true >::iterate ( )
virtual

This method performs BlockCG iterations until the status test indicates the need to stop or an error occurs (in which case, an std::exception is thrown).

iterate() will first determine whether the solver is initialized; if not, it will call initialize() using default arguments. After initialization, the solver performs BlockCG iterations until the status test evaluates as Passed, at which point the method returns to the caller.

The status test is queried at the beginning of the iteration.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 471 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
void Belos::BlockCGIter< ScalarType, MV, OP, true >::initializeCG ( CGIterationState< ScalarType, MV > &  newstate)
virtual

Initialize the solver to an iterate, providing a complete state.

The BlockCGIter contains a certain amount of state, consisting of the current residual, preconditioned residual, and decent direction.

initialize() gives the user the opportunity to manually set these, although only the current unpreconditioned residual is required.

Postcondition
isInitialized() == true (see post-conditions of isInitialize())
Note
For any pointer in newstate which directly points to the multivectors in the solver, the data is not copied.

Implements Belos::CGIteration< ScalarType, MV, OP >.

Definition at line 407 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
void Belos::BlockCGIter< ScalarType, MV, OP, true >::initialize ( )
inlinevirtual

Initialize the solver with the initial vectors from the linear problem or random data.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 200 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
CGIterationState<ScalarType,MV> Belos::BlockCGIter< ScalarType, MV, OP, true >::getState ( ) const
inlinevirtual

Get the current state of the linear solver.

The data is only valid if isInitialized() == true.

Returns
A CGIterationState object containing const pointers to the current solver state.

Implements Belos::CGIteration< ScalarType, MV, OP >.

Definition at line 212 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
int Belos::BlockCGIter< ScalarType, MV, OP, true >::getNumIters ( ) const
inlinevirtual

Get the current iteration count.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 228 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
void Belos::BlockCGIter< ScalarType, MV, OP, true >::resetNumIters ( int  iter = 0)
inlinevirtual

Reset the iteration count.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 231 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
Teuchos::RCP<const MV> Belos::BlockCGIter< ScalarType, MV, OP, true >::getNativeResiduals ( std::vector< MagnitudeType > *  ) const
inline

Get the norms of the residuals native to the solver.

Returns
A std::vector of length blockSize containing the native residuals.

Definition at line 235 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
Teuchos::RCP<MV> Belos::BlockCGIter< ScalarType, MV, OP, true >::getCurrentUpdate ( ) const
inlinevirtual

Get the current update to the linear system.

Note
This method returns a null pointer because the linear problem is current.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 240 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
const LinearProblem<ScalarType,MV,OP>& Belos::BlockCGIter< ScalarType, MV, OP, true >::getProblem ( ) const
inlinevirtual

Get a constant reference to the linear problem.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 248 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
int Belos::BlockCGIter< ScalarType, MV, OP, true >::getBlockSize ( ) const
inlinevirtual

Get the block size to be used by the iterative solver in solving this linear problem.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 251 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
void Belos::BlockCGIter< ScalarType, MV, OP, true >::setBlockSize ( int  blockSize)
virtual

Set the block size to be used by the iterative solver in solving this linear problem.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 386 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
bool Belos::BlockCGIter< ScalarType, MV, OP, true >::isInitialized ( )
inlinevirtual

States whether the solver has been initialized or not.

Implements Belos::Iteration< ScalarType, MV, OP >.

Definition at line 257 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
void Belos::BlockCGIter< ScalarType, MV, OP, true >::setDoCondEst ( bool  )
inlinevirtual

Sets whether or not to store the diagonal for condition estimation.

Implements Belos::CGIteration< ScalarType, MV, OP >.

Definition at line 260 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
Teuchos::ArrayView<MagnitudeType> Belos::BlockCGIter< ScalarType, MV, OP, true >::getDiag ( )
inlinevirtual

Gets the diagonal for condition estimation (NOT_IMPLEMENTED)

Implements Belos::CGIteration< ScalarType, MV, OP >.

Definition at line 263 of file BelosBlockCGIter.hpp.

template<class ScalarType , class MV , class OP >
Teuchos::ArrayView<MagnitudeType> Belos::BlockCGIter< ScalarType, MV, OP, true >::getOffDiag ( )
inlinevirtual

Gets the off-diagonal for condition estimation (NOT_IMPLEMENTED)

Implements Belos::CGIteration< ScalarType, MV, OP >.

Definition at line 269 of file BelosBlockCGIter.hpp.

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