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Antonin Portelli 2018-09-10 17:37:29 +01:00
parent 6d912f6c67
commit 375edd1370
1 changed files with 58 additions and 0 deletions
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58
Hadrons/Modules/MSolver/Guesser.hpp Normal file
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#ifndef Hadrons_MSolver_Guesser_hpp_
#define Hadrons_MSolver_Guesser_hpp_
#include <Hadrons/Global.hpp>
#include <Hadrons/EigenPack.hpp>
BEGIN_HADRONS_NAMESPACE
BEGIN_MODULE_NAMESPACE(MSolver)
template <typename FImpl, int nBasis>
std::shared_ptr<LinearFunction<typename FImpl::FermionField>>
makeGuesser(const std::string epackName)
{
typedef typename FImpl::FermionField FermionField;
typedef FermionEigenPack<FImpl> EPack;
typedef CoarseFermionEigenPack<FImpl, nBasis> CoarseEPack;
typedef DeflatedGuesser<FermionField> FineGuesser;
typedef LocalCoherenceDeflatedGuesser<
FermionField, typename CoarseEPack::CoarseField> CoarseGuesser;
std::shared_ptr<LinearFunction<typename FImpl::FermionField>> guesserPt;
DEFINE_ENV_LAMBDA;
if (epackName.empty())
{
guesserPt.reset(new ZeroGuesser<FermionField>());
}
else
{
try
{
auto &epack = envGetDerived(EPack, CoarseEPack, epackName);
LOG(Message) << "using low-mode deflation with coarse eigenpack '"
<< epackName << "' ("
<< epack.evecCoarse.size() << " modes)" << std::endl;
guesserPt.reset(new CoarseGuesser(epack.evec, epack.evecCoarse,
epack.evalCoarse));
}
catch (Exceptions::ObjectType &e)
{
auto &epack = envGet(EPack, epackName);
LOG(Message) << "using low-mode deflation with eigenpack '"
<< epackName << "' ("
<< epack.evec.size() << " modes)" << std::endl;
guesserPt.reset(new FineGuesser(epack.evec, epack.eval));
}
}
return guesserPt;
}
END_MODULE_NAMESPACE
END_HADRONS_NAMESPACE
#endif