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Grid/Hadrons/Modules/MDistil/Perambulator.hpp

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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: Hadrons/Modules/MDistil/Perambulator.hpp
Copyright (C) 2019
Author: Felix Erben <ferben@ed.ac.uk>
Author: Michael Marshall <Michael.Marshall@ed.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/* END LEGAL */
#ifndef Hadrons_MDistil_Perambulator_hpp_
#define Hadrons_MDistil_Perambulator_hpp_
// These are members of Distillation
#include <Hadrons/Distil.hpp>
BEGIN_HADRONS_NAMESPACE
/******************************************************************************
* Perambulator *
******************************************************************************/
BEGIN_MODULE_NAMESPACE(MDistil)
class PerambulatorPar: Serializable
{
public:
GRID_SERIALIZABLE_CLASS_MEMBERS(PerambulatorPar,
std::string, lapevec,
std::string, solver,
std::string, noise,
std::string, PerambFileName, //stem!!!
bool, multiFile,
int, nvec,
DistilParameters, Distil);
};
template <typename FImpl>
class TPerambulator: public Module<PerambulatorPar>
{
public:
FERM_TYPE_ALIASES(FImpl,);
SOLVER_TYPE_ALIASES(FImpl,);
// constructor
TPerambulator(const std::string name);
// destructor
virtual ~TPerambulator(void);
// dependency relation
virtual std::vector<std::string> getInput(void);
virtual std::vector<std::string> getOutput(void);
// setup
virtual void setup(void);
// execution
virtual void execute(void);
protected:
virtual void Cleanup(void);
protected:
// These variables are created in setup() and freed in Cleanup()
GridCartesian * grid3d; // Owned by me, so I must delete it
GridCartesian * grid4d; // Owned by environment (so I won't delete it)
// Other members
unsigned int Ls_;
std::string sLapEvecName;
std::string sNoiseName;
};
// Can't name the module Perambulator, because that's what we've called the object
MODULE_REGISTER_TMP(Peramb, TPerambulator<FIMPL>, MDistil);
/******************************************************************************
* TPerambulator implementation *
******************************************************************************/
// constructor /////////////////////////////////////////////////////////////////
template <typename FImpl>
TPerambulator<FImpl>::TPerambulator(const std::string name)
: grid3d{nullptr}, grid4d{nullptr}, Module<PerambulatorPar>(name)
{}
// destructor
template <typename FImpl>
TPerambulator<FImpl>::~TPerambulator(void)
{
Cleanup();
};
// dependencies/products ///////////////////////////////////////////////////////
template <typename FImpl>
std::vector<std::string> TPerambulator<FImpl>::getInput(void)
{
sLapEvecName = par().lapevec;
sNoiseName = par().noise;
if( sNoiseName.length() == 0 )
sNoiseName = getName() + "_noise";
return {sLapEvecName, par().solver, sNoiseName };
}
template <typename FImpl>
std::vector<std::string> TPerambulator<FImpl>::getOutput(void)
{
return {getName(), getName() + "_unsmeared_sink"};
}
// setup ///////////////////////////////////////////////////////////////////////
template <typename FImpl>
void TPerambulator<FImpl>::setup(void)
{
Cleanup();
grid4d = env().getGrid();
grid3d = MakeLowerDimGrid(grid4d);
DISTIL_PARAMETERS_DEFINE( true );
envCreate(Perambulator, getName(), 1, PerambIndexNames,Nt,nvec,LI,nnoise,Nt_inv,SI);
envCreate(std::vector<FermionField>, getName() + "_unsmeared_sink", 1,
nnoise*LI*Ns*Nt_inv, envGetGrid(FermionField));
envTmpLat(LatticeSpinColourVector, "dist_source");
envTmpLat(LatticeSpinColourVector, "tmp2");
envTmpLat(LatticeSpinColourVector, "result");
envTmpLat(LatticeColourVector, "result_nospin");
envTmp(LatticeSpinColourVector, "tmp3d",1,LatticeSpinColourVector(grid3d));
envTmp(LatticeColourVector, "tmp3d_nospin",1,LatticeColourVector(grid3d));
envTmp(LatticeColourVector, "result_3d",1,LatticeColourVector(grid3d));
envTmp(LatticeColourVector, "evec3d",1,LatticeColourVector(grid3d));
Ls_ = env().getObjectLs(par().solver);
envTmpLat(FermionField, "v4dtmp");
envTmpLat(FermionField, "v5dtmp", Ls_);
envTmpLat(FermionField, "v5dtmp_sol", Ls_);
}
// clean up any temporaries created by setup (that aren't stored in the environment)
template <typename FImpl>
void TPerambulator<FImpl>::Cleanup(void)
{
if( grid3d != nullptr ) {
delete grid3d;
grid3d = nullptr;
}
grid4d = nullptr;
}
// execution ///////////////////////////////////////////////////////////////////
template <typename FImpl>
void TPerambulator<FImpl>::execute(void)
{
DISTIL_PARAMETERS_DEFINE( false );
auto &solver=envGet(Solver, par().solver);
auto &mat = solver.getFMat();
envGetTmp(FermionField, v4dtmp);
envGetTmp(FermionField, v5dtmp);
envGetTmp(FermionField, v5dtmp_sol);
auto &noise = envGet(NoiseTensor, sNoiseName);
auto &perambulator = envGet(Perambulator, getName());
auto &epack = envGet(LapEvecs, sLapEvecName);
auto &unsmeared_sink = envGet(std::vector<FermionField>, getName() + "_unsmeared_sink");
// Load perambulator if it exists on disk instead of creating it
// Not sure this is how we want it - rather specify an input flag 'read'
// and assert that the file is there.
envGetTmp(LatticeSpinColourVector, dist_source);
envGetTmp(LatticeSpinColourVector, tmp2);
envGetTmp(LatticeSpinColourVector, result);
envGetTmp(LatticeColourVector, result_nospin);
envGetTmp(LatticeSpinColourVector, tmp3d);
envGetTmp(LatticeColourVector, tmp3d_nospin);
envGetTmp(LatticeColourVector, result_3d);
envGetTmp(LatticeColourVector, evec3d);
const int Ntlocal{grid4d->LocalDimensions()[3]};
const int Ntfirst{grid4d->LocalStarts()[3]};
{
int t_inv;
for (int inoise = 0; inoise < nnoise; inoise++) {
for (int dk = 0; dk < LI; dk++) {
for (int dt = 0; dt < Nt_inv; dt++) {
for (int ds = 0; ds < SI; ds++) {
std::cout << "LapH source vector from noise " << inoise << " and dilution component (d_k,d_t,d_alpha) : (" << dk << ","<< dt << "," << ds << ")" << std::endl;
dist_source = zero;
tmp3d_nospin = zero;
evec3d = zero;
for (int it = dt; it < Nt; it += TI){
if (full_tdil) t_inv = tsrc; else t_inv = it;
if( t_inv >= Ntfirst && t_inv < Ntfirst + Ntlocal ) {
for (int ik = dk; ik < nvec; ik += LI){
for (int is = ds; is < Ns; is += SI){
ExtractSliceLocal(evec3d,epack.evec[ik],0,t_inv,3);
//tmp3d_nospin = evec3d * noise[inoise + nnoise*(t_inv + Nt*(ik+nvec*is))];
tmp3d_nospin = evec3d * noise(inoise, t_inv, ik, is);
tmp3d=zero;
pokeSpin(tmp3d,tmp3d_nospin,is);
tmp2=zero;
InsertSliceLocal(tmp3d,tmp2,0,t_inv-Ntfirst,Grid::QCD::Tdir);
dist_source += tmp2;
}
}
}
}
result=zero;
v4dtmp = dist_source;
if (Ls_ == 1){
solver(result, v4dtmp);
} else {
mat.ImportPhysicalFermionSource(v4dtmp, v5dtmp);
solver(v5dtmp_sol, v5dtmp);
mat.ExportPhysicalFermionSolution(v5dtmp_sol, v4dtmp);
result = v4dtmp;
}
if ((1)) // comment out if unsmeared sink is too large???
unsmeared_sink[inoise+nnoise*(dk+LI*(dt+Nt_inv*ds))] = result;
for (int is = 0; is < Ns; is++) {
result_nospin = peekSpin(result,is);
for (int t = Ntfirst; t < Ntfirst + Ntlocal; t++) {
ExtractSliceLocal(result_3d,result_nospin,0,t-Ntfirst,Grid::QCD::Tdir);
for (int ivec = 0; ivec < nvec; ivec++) {
ExtractSliceLocal(evec3d,epack.evec[ivec],0,t,3);
pokeSpin(perambulator(t, ivec, dk, inoise,dt,ds),static_cast<Complex>(innerProduct(evec3d, result_3d)),is);
}
}
}
}
}
}
}
}
std::cout << "perambulator done" << std::endl;
perambulator.SliceShare( grid3d, grid4d );
if(grid4d->IsBoss()) {
std::string sPerambName{par().PerambFileName};
if( sPerambName.length() == 0 )
sPerambName = getName();
sPerambName.append( "." );
sPerambName.append( std::to_string(vm().getTrajectory()));
//perambulator.WriteBinary(sPerambName);
perambulator.write(sPerambName.c_str());
}
}
END_MODULE_NAMESPACE
END_HADRONS_NAMESPACE
#endif // Hadrons_MDistil_Perambulator_hpp_
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