dune-pdelab 2.7-git
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Overlapping parallel conjugate gradient solver preconditioned with AMG smoothed by SSOR. More...
#include <dune/pdelab/backend/istl/ovlpistlsolverbackend.hh>
Public Types | |
typedef Dune::Amg::Parameters | Parameters |
Parameters object to customize matrix hierachy building. More... | |
Public Member Functions | |
ISTLBackend_CG_AMG_SSOR (const GFS &gfs_, unsigned maxiter_=5000, int verbose_=1, bool reuse_=false, bool usesuperlu_=true) | |
Constructor. More... | |
void | setParameters (const Parameters ¶ms_) |
set AMG parameters More... | |
const Parameters & | parameters () const |
Get the parameters describing the behaviuour of AMG. More... | |
void | setReuse (bool reuse_) |
Set whether the AMG should be reused again during call to apply(). More... | |
bool | getReuse () const |
Return whether the AMG is reused during call to apply() More... | |
V::ElementType | norm (const V &v) const |
compute global norm of a vector More... | |
void | apply (M &A, V &z, V &r, typename Dune::template FieldTraits< typename V::ElementType >::real_type reduction) |
solve the given linear system More... | |
const ISTLAMGStatistics & | statistics () const |
Get statistics of the AMG solver (no of levels, timings). More... | |
const Dune::PDELab::LinearSolverResult< double > & | result () const |
Return access to result data. More... | |
Protected Attributes | |
Dune::PDELab::LinearSolverResult< double > | res |
Overlapping parallel conjugate gradient solver preconditioned with AMG smoothed by SSOR.
GO | The type of the grid operator (or the fakeGOTraits class for the old grid operator space). |
s | The bits to use for the global index. |
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inherited |
Parameters object to customize matrix hierachy building.
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inline |
Constructor.
gfs_ | The grid function space used. |
maxiter_ | The maximum number of iterations allowed. |
verbose_ | The verbosity level to use. |
reuse_ | Set true, if the Matrix to be used is always identical (AMG aggregation is then only performed once). |
usesuperlu_ | Set false, to suppress the no SuperLU warning |
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inlineinherited |
solve the given linear system
[in] | A | the given matrix |
[out] | z | the solution vector to be computed |
[in] | r | right hand side |
[in] | reduction | to be achieved |
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inlineinherited |
Return whether the AMG is reused during call to apply()
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inlineinherited |
compute global norm of a vector
[in] | v | the given vector |
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inlineinherited |
Get the parameters describing the behaviuour of AMG.
The returned object can be adjusted to ones needs and then can be reset using setParameters.
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inlineinherited |
Return access to result data.
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inlineinherited |
set AMG parameters
[in] | params_ | a parameter object of Type Dune::Amg::Parameters |
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inlineinherited |
Set whether the AMG should be reused again during call to apply().
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inlineinherited |
Get statistics of the AMG solver (no of levels, timings).
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protectedinherited |