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Grid/Hadrons/Modules/MDistil/DistilVectors.hpp

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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: Hadrons/Modules/MDistil/DistilVectors.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_DistilVectors_hpp_
#define Hadrons_MDistil_DistilVectors_hpp_
#include <Hadrons/Modules/MDistil/Distil.hpp>
BEGIN_HADRONS_NAMESPACE
BEGIN_MODULE_NAMESPACE(MDistil)
/******************************************************************************
* DistilVectors *
* (Create rho and/or phi vectors) *
******************************************************************************/
class DistilVectorsPar: Serializable
{
public:
GRID_SERIALIZABLE_CLASS_MEMBERS(DistilVectorsPar,
std::string, noise,
std::string, perambulator,
std::string, lapevec,
std::string, rho,
std::string, phi,
std::string, DistilParams);
};
template <typename FImpl>
class TDistilVectors: public Module<DistilVectorsPar>
{
public:
FERM_TYPE_ALIASES(FImpl,);
// constructor
TDistilVectors(const std::string name);
// destructor
virtual ~TDistilVectors(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
public:
// These variables contain parameters
std::string RhoName;
std::string PhiName;
};
MODULE_REGISTER_TMP(DistilVectors, TDistilVectors<FIMPL>, MDistil);
/******************************************************************************
* TDistilVectors implementation *
******************************************************************************/
// constructor /////////////////////////////////////////////////////////////////
template <typename FImpl>
TDistilVectors<FImpl>::TDistilVectors(const std::string name) : Module<DistilVectorsPar>(name) {}
// dependencies/products ///////////////////////////////////////////////////////
template <typename FImpl>
std::vector<std::string> TDistilVectors<FImpl>::getInput(void)
{
return {par().noise,par().perambulator,par().lapevec,par().DistilParams};
}
template <typename FImpl>
std::vector<std::string> TDistilVectors<FImpl>::getOutput(void)
{
RhoName = par().rho;
PhiName = par().phi;
if (RhoName.empty() && PhiName.empty())
{
HADRONS_ERROR(Argument,"No output specified");
}
std::vector<std::string> out;
if (!RhoName.empty())
out.push_back(RhoName);
if (!PhiName.empty())
out.push_back(PhiName);
return out;
}
// setup ///////////////////////////////////////////////////////////////////////
template <typename FImpl>
void TDistilVectors<FImpl>::setup(void)
{
// We expect the perambulator to have been created with these indices
auto &perambulator = envGet(PerambTensor, par().perambulator);
if (!perambulator.ValidateIndexNames())
{
HADRONS_ERROR(Range,"Perambulator index names bad");
}
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 };
if (!RhoName.empty())
envCreate(std::vector<FermionField>, RhoName, 1, dp.nnoise*dp.LI*dp.SI*Nt_inv, envGetGrid(FermionField));
if (!PhiName.empty())
envCreate(std::vector<FermionField>, PhiName, 1, dp.nnoise*dp.LI*dp.SI*Nt_inv, envGetGrid(FermionField));
Coordinate latt_size = GridDefaultLatt();
Coordinate mpi_layout = GridDefaultMpi();
Coordinate simd_layout_3 = GridDefaultSimd(Nd-1, vComplex::Nsimd());
latt_size[Nd-1] = 1;
simd_layout_3.push_back( 1 );
mpi_layout[Nd-1] = 1;
GridCartesian * const grid4d{env().getGrid()};
grid3d.reset(MakeLowerDimGrid(grid4d));
envTmp(LatticeSpinColourVector, "source4d",1,LatticeSpinColourVector(grid4d));
envTmp(LatticeSpinColourVector, "source3d",1,LatticeSpinColourVector(grid3d.get()));
envTmp(LatticeColourVector, "source3d_nospin",1,LatticeColourVector(grid3d.get()));
envTmp(LatticeSpinColourVector, "sink3d",1,LatticeSpinColourVector(grid3d.get()));
envTmp(LatticeColourVector, "evec3d",1,LatticeColourVector(grid3d.get()));
}
// execution ///////////////////////////////////////////////////////////////////
template <typename FImpl>
void TDistilVectors<FImpl>::execute(void)
{
auto &noise = envGet(NoiseTensor, par().noise);
auto &perambulator = envGet(PerambTensor, par().perambulator);
auto &epack = envGet(Grid::Hadrons::EigenPack<LatticeColourVector>, par().lapevec);
const DistilParameters &dp{envGet(DistilParameters, par().DistilParams)};
envGetTmp(LatticeSpinColourVector, source4d);
envGetTmp(LatticeSpinColourVector, source3d);
envGetTmp(LatticeColourVector, source3d_nospin);
envGetTmp(LatticeSpinColourVector, sink3d);
envGetTmp(LatticeColourVector, evec3d);
GridCartesian * const grid4d{env().getGrid()};
const int Ntlocal{ grid4d->LocalDimensions()[3] };
const int Ntfirst{ grid4d->LocalStarts()[3] };
const int Nt{env().getDim(Tdir)};
const bool full_tdil{ dp.TI == Nt };
const int Nt_inv{ full_tdil ? 1 : dp.TI };
int vecindex;
int t_inv;
if (!RhoName.empty())
{
auto &rho = envGet(std::vector<FermionField>, RhoName);
for (int inoise = 0; inoise < dp.nnoise; inoise++)
{
for (int dk = 0; dk < dp.LI; dk++)
{
for (int dt = 0; dt < Nt_inv; dt++)
{
for (int ds = 0; ds < dp.SI; ds++)
{
vecindex = inoise + dp.nnoise * (dk + dp.LI * (ds + dp.SI * dt));
rho[vecindex] = 0;
for (int it = dt; it < Nt; it += dp.TI)
{
const int t_inv{full_tdil ? dp.tsrc : it};
if (t_inv >= Ntfirst && t_inv < Ntfirst + Ntlocal)
{
for (int ik = dk; ik < dp.nvec; ik += dp.LI)
{
for (int is = ds; is < Ns; is += dp.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);
rho[vecindex] += source4d;
}
}
}
}
}
}
}
}
}
if (!PhiName.empty())
{
auto &phi = envGet(std::vector<FermionField>, PhiName);
for (int inoise = 0; inoise < dp.nnoise; inoise++)
{
for (int dk = 0; dk < dp.LI; dk++)
{
for (int dt = 0; dt < Nt_inv; dt++)
{
for (int ds = 0; ds < dp.SI; ds++)
{
vecindex = inoise + dp.nnoise * (dk + dp.LI * (ds + dp.SI * dt));
phi[vecindex] = 0;
for (int t = Ntfirst; t < Ntfirst + Ntlocal; t++)
{
sink3d=0;
for (int ivec = 0; ivec < dp.nvec; ivec++)
{
ExtractSliceLocal(evec3d,epack.evec[ivec],0,t-Ntfirst,Tdir);
sink3d += evec3d * perambulator.tensor(t, ivec, dk, inoise,dt,ds);
}
InsertSliceLocal(sink3d,phi[vecindex],0,t-Ntfirst,Tdir);
}
}
}
}
}
}
}
END_MODULE_NAMESPACE
END_HADRONS_NAMESPACE
#endif // Hadrons_MDistil_DistilVectors_hpp_
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