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Grid/Hadrons/Modules/MDistil/Perambulator.hpp
Michael Marshall 3f00b8f6c7 Switch to std::unique_ptr<GridCartesian> grid3d; 
Remove hand-coded reference to pi - switch to <math.h> definition
2019-11-12 21:53:09 +00:00

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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_
#include <Hadrons/Modules/MDistil/Distil.hpp>
BEGIN_HADRONS_NAMESPACE
BEGIN_MODULE_NAMESPACE(MDistil)
/******************************************************************************
* Perambulator *
******************************************************************************/
class PerambulatorPar: Serializable
{
public:
GRID_SERIALIZABLE_CLASS_MEMBERS(PerambulatorPar,
std::string, lapevec,
std::string, solver,
std::string, noise,
std::string, PerambFileName,
std::string, UnsmearedSinkFileName,
std::string, DistilParams);
};
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:
std::unique_ptr<GridCartesian> grid3d; // Owned by me, so I must delete it
unsigned int Ls_;
};
MODULE_REGISTER_TMP(Perambulator, TPerambulator<FIMPL>, MDistil);
/******************************************************************************
* TPerambulator implementation *
******************************************************************************/
// constructor /////////////////////////////////////////////////////////////////
template <typename FImpl>
TPerambulator<FImpl>::TPerambulator(const std::string name) : Module<PerambulatorPar>(name) {}
// dependencies/products ///////////////////////////////////////////////////////
template <typename FImpl>
std::vector<std::string> TPerambulator<FImpl>::getInput(void)
{
return {par().lapevec, par().solver, par().noise, par().DistilParams};
}
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)
{
grid3d.reset( MakeLowerDimGrid( env().getGrid() ) );
const DistilParameters &dp = envGet(DistilParameters, par().DistilParams);
const int Nt{env().getDim(Tdir)};
const bool full_tdil{ dp.TI == Nt };
const int Nt_inv{ full_tdil ? 1 : dp.TI };
envCreate(PerambTensor, getName(), 1, Nt, dp.nvec, dp.LI, dp.nnoise, Nt_inv, dp.SI);
envCreate(std::vector<FermionField>, getName() + "_unsmeared_sink", 1,
dp.nnoise*dp.LI*Ns*Nt_inv, envGetGrid(FermionField));
envTmpLat(LatticeSpinColourVector, "dist_source");
envTmpLat(LatticeSpinColourVector, "source4d");
envTmp(LatticeSpinColourVector, "source3d",1,LatticeSpinColourVector(grid3d.get()));
envTmp(LatticeColourVector, "source3d_nospin",1,LatticeColourVector(grid3d.get()));
envTmpLat(LatticeSpinColourVector, "result4d");
envTmpLat(LatticeColourVector, "result4d_nospin");
envTmp(LatticeColourVector, "result3d_nospin",1,LatticeColourVector(grid3d.get()));
envTmp(LatticeColourVector, "evec3d",1,LatticeColourVector(grid3d.get()));
Ls_ = env().getObjectLs(par().solver);
envTmpLat(FermionField, "v4dtmp");
envTmpLat(FermionField, "v5dtmp", Ls_);
envTmpLat(FermionField, "v5dtmp_sol", Ls_);
}
// execution ///////////////////////////////////////////////////////////////////
template <typename FImpl>
void TPerambulator<FImpl>::execute(void)
{
const DistilParameters &DPar{ envGet(DistilParameters, par().DistilParams) };
const int Nt{env().getDim(Tdir)};
const int nvec{DPar.nvec};
const int nnoise{DPar.nnoise};
const int tsrc{DPar.tsrc};
const int TI{DPar.TI};
const int LI{DPar.LI};
const int SI{DPar.SI};
const bool full_tdil{ TI == Nt };
const int Nt_inv{ full_tdil ? 1 : TI };
auto &solver=envGet(Solver, par().solver);
auto &mat = solver.getFMat();
envGetTmp(FermionField, v4dtmp);
envGetTmp(FermionField, v5dtmp);
envGetTmp(FermionField, v5dtmp_sol);
auto &noise = envGet(NoiseTensor, par().noise);
auto &perambulator = envGet(PerambTensor, getName());
auto &epack = envGet(LapEvecs, par().lapevec);
auto &unsmeared_sink = envGet(std::vector<FermionField>, getName() + "_unsmeared_sink");
envGetTmp(LatticeSpinColourVector, dist_source);
envGetTmp(LatticeSpinColourVector, source4d);
envGetTmp(LatticeSpinColourVector, source3d);
envGetTmp(LatticeColourVector, source3d_nospin);
envGetTmp(LatticeSpinColourVector, result4d);
envGetTmp(LatticeColourVector, result4d_nospin);
envGetTmp(LatticeColourVector, result3d_nospin);
envGetTmp(LatticeColourVector, evec3d);
GridCartesian * const grid4d{ env().getGrid() }; // Owned by environment (so I won't delete it)
const int Ntlocal{grid4d->LocalDimensions()[3]};
const int Ntfirst{grid4d->LocalStarts()[3]};
const std::string UnsmearedSinkFileName{ par().UnsmearedSinkFileName };
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++)
{
LOG(Message) << "LapH source vector from noise " << inoise << " and dilution component (d_k,d_t,d_alpha) : (" << dk << ","<< dt << "," << ds << ")" << std::endl;
dist_source = 0;
source3d_nospin = 0;
evec3d = 0;
for (int it = dt; it < Nt; it += TI)
{
const int t_inv{full_tdil ? tsrc : 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-Ntfirst,Tdir);
source3d_nospin = evec3d * noise.tensor(inoise, t_inv, ik, is);
source3d=0;
pokeSpin(source3d,source3d_nospin,is);
source4d=0;
InsertSliceLocal(source3d,source4d,0,t_inv-Ntfirst,Tdir);
dist_source += source4d;
}
}
}
}
result4d=0;
v4dtmp = dist_source;
if (Ls_ == 1)
solver(result4d, v4dtmp);
else
{
mat.ImportPhysicalFermionSource(v4dtmp, v5dtmp);
solver(v5dtmp_sol, v5dtmp);
mat.ExportPhysicalFermionSolution(v5dtmp_sol, v4dtmp);
result4d = v4dtmp;
}
if (!UnsmearedSinkFileName.empty())
unsmeared_sink[inoise+nnoise*(dk+LI*(dt+Nt_inv*ds))] = result4d;
for (int is = 0; is < Ns; is++)
{
result4d_nospin = peekSpin(result4d,is);
for (int t = Ntfirst; t < Ntfirst + Ntlocal; t++)
{
ExtractSliceLocal(result3d_nospin,result4d_nospin,0,t-Ntfirst,Tdir);
for (int ivec = 0; ivec < nvec; ivec++)
{
ExtractSliceLocal(evec3d,epack.evec[ivec],0,t-Ntfirst,Tdir);
pokeSpin(perambulator.tensor(t, ivec, dk, inoise,dt,ds),static_cast<Complex>(innerProduct(evec3d, result3d_nospin)),is);
}
}
}
}
}
}
}
// Now share my timeslice data with other members of the grid
const int NumSlices{grid4d->_processors[Tdir] / grid3d->_processors[Tdir]};
if (NumSlices > 1)
{
LOG(Debug) << "Sharing perambulator data with other nodes" << std::endl;
const int MySlice {grid4d->_processor_coor[Tdir]};
const int SliceCount {static_cast<int>(perambulator.tensor.size()/NumSlices)};
PerambTensor::Scalar * const MyData {perambulator.tensor.data()+MySlice*SliceCount};
Coordinate coor(Nd);
for (int i = 0 ; i < Tdir ; i++) coor[i] = grid4d->_processor_coor[i];
std::vector<CommsRequest_t> reqs(0);
for (int i = 1; i < NumSlices ; i++)
{
coor[Tdir] = (MySlice+i)%NumSlices;
const int SendRank { grid4d->RankFromProcessorCoor(coor) };
const int RecvSlice { ( MySlice - i + NumSlices ) % NumSlices };
coor[Tdir] = RecvSlice;
const auto RecvRank = grid4d->RankFromProcessorCoor(coor);
grid4d->SendToRecvFromBegin(reqs,MyData,SendRank, perambulator.tensor.data()
+ RecvSlice*SliceCount,RecvRank,SliceCount*sizeof(PerambTensor::Scalar));
}
grid4d->SendToRecvFromComplete(reqs);
}
// Save the perambulator to disk from the boss node
if (grid4d->IsBoss())
{
std::string sPerambName {par().PerambFileName};
sPerambName.append(".");
sPerambName.append(std::to_string(vm().getTrajectory()));
perambulator.write(sPerambName.c_str());
}
//Save the unsmeared sinks if filename specified
if (!UnsmearedSinkFileName.empty())
{
LOG(Message) << "Writing unsmeared sink to " << UnsmearedSinkFileName << std::endl;
A2AVectorsIo::write(UnsmearedSinkFileName, unsmeared_sink, false, vm().getTrajectory());
}
}
END_MODULE_NAMESPACE
END_HADRONS_NAMESPACE
#endif // Hadrons_MDistil_Perambulator_hpp_
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