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https://github.com/paboyle/Grid.git
synced 2024-09-20 01:05:38 +01:00
Eigenvectors created. Still need to correctly set parameters for test.
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@ -90,6 +90,73 @@ inline void SliceShare( GridBase * gridLowDim, GridBase * gridHighDim, void * Bu
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//#endif
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}
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}
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/*************************************************************************************
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-Grad^2 (Peardon, 2009, pg 2, equation 3)
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Field Type of field the operator will be applied to
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GaugeField Gauge field the operator will smear using
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TODO CANDIDATE for integration into laplacian operator
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should just require adding number of dimensions to act on to constructor,
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where the default=all dimensions, but we could specify 3 spatial dimensions
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*************************************************************************************/
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template<typename Field, typename GaugeField=LatticeGaugeFieldD>
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class LinOpPeardonNabla : public LinearOperatorBase<Field>, public LinearFunction<Field> {
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typedef typename GaugeField::vector_type vCoeff_t;
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protected: // I don't really mind if _gf is messed with ... so make this public?
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//GaugeField & _gf;
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int nd; // number of spatial dimensions
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std::vector<Lattice<iColourMatrix<vCoeff_t> > > U;
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public:
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// Construct this operator given a gauge field and the number of dimensions it should act on
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LinOpPeardonNabla( GaugeField& gf, int dimSpatial = Grid::QCD::Tdir ) : /*_gf(gf),*/ nd{dimSpatial} {
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assert(dimSpatial>=1);
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for( int mu = 0 ; mu < nd ; mu++ )
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U.push_back(PeekIndex<LorentzIndex>(gf,mu));
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}
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// Apply this operator to "in", return result in "out"
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void operator()(const Field& in, Field& out) {
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assert( nd <= in._grid->Nd() );
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conformable( in, out );
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out = ( ( Real ) ( 2 * nd ) ) * in;
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Field _tmp(in._grid);
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typedef typename GaugeField::vector_type vCoeff_t;
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//Lattice<iColourMatrix<vCoeff_t> > U(in._grid);
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for( int mu = 0 ; mu < nd ; mu++ ) {
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//U = PeekIndex<LorentzIndex>(_gf,mu);
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out -= U[mu] * Cshift( in, mu, 1);
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_tmp = adj( U[mu] ) * in;
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out -= Cshift(_tmp,mu,-1);
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}
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}
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void OpDiag (const Field &in, Field &out) { assert(0); };
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void OpDir (const Field &in, Field &out,int dir,int disp) { assert(0); };
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void Op (const Field &in, Field &out) { assert(0); };
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void AdjOp (const Field &in, Field &out) { assert(0); };
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void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2) { assert(0); };
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void HermOp(const Field &in, Field &out) { operator()(in,out); };
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};
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template<typename Field>
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class LinOpPeardonNablaHerm : public LinearFunction<Field> {
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public:
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OperatorFunction<Field> & _poly;
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LinearOperatorBase<Field> &_Linop;
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LinOpPeardonNablaHerm(OperatorFunction<Field> & poly,LinearOperatorBase<Field>& linop) : _poly(poly), _Linop(linop) {
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}
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void operator()(const Field& in, Field& out) {
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_poly(_Linop,in,out);
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}
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};
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END_MODULE_NAMESPACE // Grid
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/******************************************************************************
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@ -100,6 +167,9 @@ BEGIN_HADRONS_NAMESPACE
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BEGIN_MODULE_NAMESPACE(MDistil)
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typedef Grid::Hadrons::EigenPack<LatticeColourVector> DistilEP;
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typedef std::vector<std::vector<std::vector<SpinVector> > > DistilNoises;
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/******************************************************************************
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Make a lower dimensional grid
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******************************************************************************/
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@ -386,6 +456,41 @@ public:
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}
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};
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/*************************************************************************************
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Rotate eigenvectors into our phase convention
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First component of first eigenvector is real and positive
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*************************************************************************************/
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inline void RotateEigen(std::vector<LatticeColourVector> & evec)
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{
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ColourVector cv0;
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auto grid = evec[0]._grid;
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std::vector<int> siteFirst(grid->Nd(),0);
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peekSite(cv0, evec[0], siteFirst);
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auto & cplx0 = cv0()()(0);
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if( std::imag(cplx0) == 0 )
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std::cout << GridLogMessage << "RotateEigen() : Site 0 : " << cplx0 << " => already meets phase convention" << std::endl;
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else {
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const auto cplx0_mag{std::abs(cplx0)};
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const auto phase{std::conj(cplx0 / cplx0_mag)};
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std::cout << GridLogMessage << "RotateEigen() : Site 0 : |" << cplx0 << "|=" << cplx0_mag << " => phase=" << (std::arg(phase) / 3.14159265) << " pi" << std::endl;
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{
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// TODO: Only really needed on the master slice
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for( int k = 0 ; k < evec.size() ; k++ )
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evec[k] *= phase;
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if(grid->IsBoss()){
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for( int c = 0 ; c < Nc ; c++ )
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cv0()()(c) *= phase;
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cplx0.imag(0); // This assumes phase convention is real, positive (so I get rid of rounding error)
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//pokeSite(cv0, evec[0], siteFirst);
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pokeLocalSite(cv0, evec[0], siteFirst);
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}
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}
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}
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}
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END_MODULE_NAMESPACE
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END_HADRONS_NAMESPACE
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@ -107,6 +107,7 @@ class LapEvecPar: Serializable
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(LapEvecPar,
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std::string, gauge,
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std::string, EigenPackName,
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StoutParameters, Stout,
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ChebyshevParameters, Cheby,
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LanczosParameters, Lanczos,
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@ -125,7 +126,6 @@ class TLapEvec: public Module<LapEvecPar>
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{
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public:
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GAUGE_TYPE_ALIASES(FImpl,);
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typedef std::vector<Grid::Hadrons::EigenPack<LatticeColourVector> > DistilEP;
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public:
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// constructor
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@ -155,6 +155,8 @@ MODULE_REGISTER_TMP(LapEvec, TLapEvec<FIMPL>, MDistil);
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TLapEvec implementation
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******************************************************************************/
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//constexpr char szEigenPackSuffix[] = "_eigenPack";
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// constructor /////////////////////////////////////////////////////////////////
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template <typename FImpl>
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TLapEvec<FImpl>::TLapEvec(const std::string name) : gridLD{nullptr}, Module<LapEvecPar>(name)
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@ -182,7 +184,7 @@ std::vector<std::string> TLapEvec<FImpl>::getInput(void)
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template <typename FImpl>
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std::vector<std::string> TLapEvec<FImpl>::getOutput(void)
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{
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std::vector<std::string> out = {getName()};
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std::vector<std::string> out = {getName()}; // This is the higher dimensional eigenpack
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return out;
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}
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@ -195,16 +197,19 @@ void TLapEvec<FImpl>::setup(void)
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Environment & e{env()};
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gridHD = e.getGrid();
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gridLD = MakeLowerDimGrid( gridHD );
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Nx = gridHD->_gdimensions[Xdir];
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Ny = gridHD->_gdimensions[Ydir];
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Nz = gridHD->_gdimensions[Zdir];
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Nt = gridHD->_gdimensions[Tdir];
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Nx = gridHD->_fdimensions[Xdir];
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Ny = gridHD->_fdimensions[Ydir];
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Nz = gridHD->_fdimensions[Zdir];
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Nt = gridHD->_fdimensions[Tdir];
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// Temporaries
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envTmpLat(GaugeField, "Umu");
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envTmpLat(GaugeField, "Umu_stout");
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envTmpLat(GaugeField, "Umu_smear");
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envTmp(LatticeGaugeField, "UmuNoTime",1,LatticeGaugeField(gridLD));
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envTmp(LatticeColourVector, "src",1,LatticeColourVector(gridLD));
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envTmp(std::vector<DistilEP>, "eig",1,std::vector<DistilEP>(Nt));
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// Output objects
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envCreate(DistilEP, getName(), 1, Nt);
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envCreate(DistilEP, getName(), 1, par().Lanczos.Nvec, gridHD );
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}
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// clean up any temporaries created by setup (that aren't stored in the environment)
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@ -215,14 +220,142 @@ void TLapEvec<FImpl>::Cleanup(void)
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delete gridLD;
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gridLD = nullptr;
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}
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gridHD = nullptr;
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}
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/******************************************************************************
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Calculate low-mode eigenvalues of the Laplacian
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******************************************************************************/
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// execution ///////////////////////////////////////////////////////////////////
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template <typename FImpl>
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void TLapEvec<FImpl>::execute(void)
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{
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LOG(Message) << "execute() : start" << std::endl;
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LOG(Message) << "Stout.steps=" << par().Stout.steps << ", Stout.parm=" << par().Stout.parm << std::endl;
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// Alii for parameters
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const int &TI{par().Distil.TI};
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const int &LI{par().Distil.LI};
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const int &nnoise{par().Distil.Nnoise};
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const int &tsrc{par().Distil.tSrc};
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const LanczosParameters &LPar{par().Lanczos};
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const int &nvec{LPar.Nvec};
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const bool exact_distillation{TI==Nt && LI==nvec};
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const bool full_tdil{TI==Nt};
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const int &Nt_inv{full_tdil ? 1 : TI};
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const ChebyshevParameters &ChebPar{par().Cheby};
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// Assertions on the parameters we read
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assert(TI>1);
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assert(LI>1);
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if(exact_distillation)
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assert(nnoise==1);
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else
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assert(nnoise>1);
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// Stout smearing
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envGetTmp(GaugeField, Umu);
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envGetTmp(GaugeField, Umu_smear);
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LOG(Message) << "Initial plaquette: " << WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu) << std::endl;
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{
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envGetTmp(GaugeField, Umu_stout);
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const int &Steps{par().Stout.steps};
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Smear_Stout<PeriodicGimplR> LS(par().Stout.parm);
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for (int i = 0; i < Steps; i++) {
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LS.smear(Umu_stout, Umu_smear);
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Umu_smear = Umu_stout;
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}
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}
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LOG(Message) << "Smeared plaquette: " << WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu_smear) << std::endl;
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// For debugging only, write logging output to a local file
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std::ofstream * ll = nullptr;
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const int rank{gridHD->ThisRank()};
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if((0)) { // debug to a local log file
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std::string filename{"Local_"};
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filename.append(std::to_string(rank));
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filename.append(".log");
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ll = new std::ofstream(filename);
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}
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////////////////////////////////////////////////////////////////////////
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// Invert Peardon Nabla operator separately on each time-slice
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////////////////////////////////////////////////////////////////////////
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std::string sEigenPackName(par().EigenPackName);
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bool bReturnValue = true;
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auto & eig4d = envGet(DistilEP, getName() );
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eig4d.resize(nvec,gridHD);
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envGetTmp(std::vector<DistilEP>, eig); // Eigenpack for each timeslice
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envGetTmp(LatticeGaugeField, UmuNoTime); // Gauge field without time dimension
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envGetTmp(LatticeColourVector, src);
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const int Ntlocal{gridHD->LocalDimensions()[Tdir]};
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const int Ntfirst{gridHD->LocalStarts()[Tdir]};
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for(int t=Ntfirst;bReturnValue && t<Ntfirst+Ntlocal;t++){
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std::cout << GridLogMessage << "------------------------------------------------------------" << std::endl;
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std::cout << GridLogMessage << " Compute eigenpack, Timeslice = " << t << std::endl;
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std::cout << GridLogMessage << "------------------------------------------------------------" << std::endl;
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LOG(Message) << "eig.size()=" << eig.size() << std::endl;
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eig[t].resize(LPar.Nk+LPar.Np,gridLD);
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LOG(Message) << "After eig[t].resize" << std::endl;
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// Construct smearing operator
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ExtractSliceLocal(UmuNoTime,Umu_smear,0,t-Ntfirst,Grid::QCD::Tdir); // switch to 3d/4d objects
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LinOpPeardonNabla<LatticeColourVector> PeardonNabla(UmuNoTime);
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std::cout << "Chebyshev preconditioning to order " << ChebPar.PolyOrder
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<< " with parameters (alpha,beta) = (" << ChebPar.alpha << "," << ChebPar.beta << ")" << std::endl;
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Chebyshev<LatticeColourVector> Cheb(ChebPar.alpha,ChebPar.beta,ChebPar.PolyOrder);
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//from Test_Cheby.cc
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if ( ((0)) && Ntfirst == 0 && t==0) {
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std::ofstream of("cheby_" + std::to_string(ChebPar.alpha) + "_" + std::to_string(ChebPar.beta) + "_" + std::to_string(ChebPar.PolyOrder));
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Cheb.csv(of);
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}
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// Construct source vector according to Test_dwf_compressed_lanczos.cc
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src=11.0;
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RealD nn = norm2(src);
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nn = Grid::sqrt(nn);
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src = src * (1.0/nn);
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GridLogIRL.Active(1);
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LinOpPeardonNablaHerm<LatticeColourVector> PeardonNablaCheby(Cheb,PeardonNabla);
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ImplicitlyRestartedLanczos<LatticeColourVector> IRL(PeardonNablaCheby,PeardonNabla,LPar.Nvec,LPar.Nk,LPar.Nk+LPar.Np,LPar.resid,LPar.MaxIt);
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int Nconv = 0;
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if(ll) *ll << t << " : Before IRL.calc()" << std::endl;
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IRL.calc(eig[t].eval,eig[t].evec,src,Nconv);
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if(ll) *ll << t << " : After IRL.calc()" << std::endl;
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if( Nconv < LPar.Nvec ) {
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bReturnValue = false;
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if(ll) *ll << t << " : Convergence error : Only " << Nconv << " converged!" << std::endl;
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} else {
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if( Nconv > LPar.Nvec )
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eig[t].resize( LPar.Nvec, gridLD );
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std::cout << GridLogMessage << "Timeslice " << t << " has " << eig[t].eval.size() << " eigenvalues and " << eig[t].evec.size() << " eigenvectors." << std::endl;
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// Now rotate the eigenvectors into our phase convention
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RotateEigen( eig[t].evec );
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// Write the eigenvectors and eigenvalues to disk
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//std::cout << GridLogMessage << "Writing eigenvalues/vectors to " << pszEigenPack << std::endl;
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eig[t].record.operatorXml="<OPERATOR>Michael</OPERATOR>";
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eig[t].record.solverXml="<SOLVER>Felix</SOLVER>";
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eig[t].write(sEigenPackName,false,t);
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//std::cout << GridLogMessage << "Written eigenvectors" << std::endl;
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}
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for (int i=0;i<LPar.Nvec;i++){
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std::cout << "Inserting Timeslice " << t << " into vector " << i << std::endl;
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InsertSliceLocal(eig[t].evec[i],eig4d.evec[i],0,t,3);
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}
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}
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// Close the local debugging log file
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if( ll ) {
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*ll << " Returning " << bReturnValue << std::endl;
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delete ll;
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}
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LOG(Message) << "execute() : end" << std::endl;
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}
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@ -235,11 +235,22 @@ void test_LapEvec(Application &application)
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// gauge field
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application.createModule<MGauge::Unit>(szGaugeName);
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// Now make an instance of the LapEvec object
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MDistil::LapEvecPar par;
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par.Stout.steps = 173;
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par.Stout.parm = -9.87654321;
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par.gauge = szGaugeName;
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application.createModule<MDistil::LapEvec>("LapEvec",par);
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MDistil::LapEvecPar p;
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p.gauge = szGaugeName;
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p.EigenPackName = "ePack";
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p.Distil.TI = 8;
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p.Distil.LI = 3;
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p.Distil.Nnoise = 2;
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p.Distil.tSrc = 0;
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p.Stout.steps = 3;
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p.Stout.parm = 0.2;
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p.Cheby.PolyOrder = 11;
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p.Cheby.alpha = 0.3;
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p.Cheby.beta = 12.5;
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p.Lanczos.Nvec = 5;
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p.Lanczos.Nk = 6;
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p.Lanczos.Np = 2;
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application.createModule<MDistil::LapEvec>("LapEvec",p);
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}
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/////////////////////////////////////////////////////////////
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