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Encapsulated 4D->5D and 5D->4D conversions in separate functions & added corresponding tests.

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This commit is contained in:
Lanny91 2017-03-10 14:59:11 +00:00
parent ac1253bb76
commit af2d6ce2e0
2 changed files with 179 additions and 9 deletions
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32
extras/Hadrons/Modules/Quark.hpp
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@ -36,6 +36,27 @@ See the full license in the file "LICENSE" in the top level distribution directo
BEGIN_HADRONS_NAMESPACE
/******************************************************************************
* 5D -> 4D and 4D -> 5D conversions. *
******************************************************************************/
template<class vobj> // Note that 5D object is modified.
inline void make_4D(Lattice<vobj> &in_5d, Lattice<vobj> &out_4d, int Ls)
{
axpby_ssp_pminus(in_5d, 0., in_5d, 1., in_5d, 0, 0);
axpby_ssp_pplus(in_5d, 1., in_5d, 1., in_5d, 0, Ls-1);
ExtractSlice(out_4d, in_5d, 0, 0);
}
template<class vobj>
inline void make_5D(const Lattice<vobj> &in_4d, Lattice<vobj> &out_5d, int Ls)
{
out_5d = zero;
InsertSlice(in_4d, out_5d, 0, 0);
InsertSlice(in_4d, out_5d, Ls-1, 0);
axpby_ssp_pplus(out_5d, 0., out_5d, 1., out_5d, 0, 0);
axpby_ssp_pminus(out_5d, 0., out_5d, 1., out_5d, Ls-1, Ls-1);
}
/******************************************************************************
* TQuark *
******************************************************************************/
@ -143,12 +164,8 @@ void TQuark<FImpl>::execute(void)
}
else
{
source = zero;
PropToFerm(tmp, fullSrc, s, c);
InsertSlice(tmp, source, 0, 0);
InsertSlice(tmp, source, Ls_-1, 0);
axpby_ssp_pplus(source, 0., source, 1., source, 0, 0);
axpby_ssp_pminus(source, 0., source, 1., source, Ls_-1, Ls_-1);
make_5D(tmp, source, Ls_);
}
}
// source conversion for 5D sources
@ -171,10 +188,7 @@ void TQuark<FImpl>::execute(void)
{
PropagatorField &p4d =
*env().template getObject<PropagatorField>(getName());
axpby_ssp_pminus(sol, 0., sol, 1., sol, 0, 0);
axpby_ssp_pplus(sol, 1., sol, 1., sol, 0, Ls_-1);
ExtractSlice(tmp, sol, 0, 0);
make_4D(sol, tmp, Ls_);
FermToProp(p4d, tmp, s, c);
}
}

156
tests/hadrons/Test_hadrons_quark.cc Normal file
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@ -0,0 +1,156 @@
/*******************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: tests/hadrons/Test_hadrons_quark.cc
Copyright (C) 2017
Author: Andrew Lawson <andrew.lawson1991@gmail.com>
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.
*******************************************************************************/
#include "Test_hadrons.hpp"
#include <Grid/Hadrons/Modules/Quark.hpp>
using namespace Grid;
using namespace QCD;
using namespace Hadrons;
/*******************************************************************************
* Unit test functions within Quark module.
******************************************************************************/
// Alternative 4D & 5D projections
template<class vobj>
inline void make_4D_with_gammas(Lattice<vobj> &in_5d, Lattice<vobj> &out_4d, int Ls)
{
GridBase *_grid(out_4d._grid);
Lattice<vobj> tmp(_grid);
Gamma G5(Gamma::Algebra::Gamma5);
ExtractSlice(tmp, in_5d, 0, 0);
out_4d = 0.5 * (tmp - G5*tmp);
ExtractSlice(tmp, in_5d, Ls - 1, 0);
out_4d += 0.5 * (tmp + G5*tmp);
}
template<class vobj>
inline void make_5D_with_gammas(Lattice<vobj> &in_4d, Lattice<vobj> &out_5d, int Ls)
{
out_5d = zero;
Gamma G5(Gamma::Algebra::Gamma5);
GridBase *_grid(in_4d._grid);
Lattice<vobj> tmp(_grid);
tmp = 0.5 * (in_4d + G5*in_4d);
InsertSlice(tmp, out_5d, 0, 0);
tmp = 0.5 * (in_4d - G5*in_4d);
InsertSlice(tmp, out_5d, Ls - 1, 0);
}
int main(int argc, char **argv)
{
/***************************************************************************
* Initialisation.
**************************************************************************/
Grid_init(&argc, &argv);
std::vector<int> latt_size = GridDefaultLatt();
std::vector<int> simd_layout = GridDefaultSimd(Nd,vComplex::Nsimd());
std::vector<int> mpi_layout = GridDefaultMpi();
const int Ls = 8;
GridCartesian UGrid(latt_size,simd_layout,mpi_layout);
GridCartesian *FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls, &UGrid);
GridSerialRNG sRNG;
GridParallelRNG pRNG(&UGrid);
std::vector<int> seeds4({1,2,3,4});
std::vector<int> seeds5({5,6,7,8});
GridParallelRNG rng4(&UGrid);
GridParallelRNG rng5(FGrid);
rng4.SeedFixedIntegers(seeds4);
rng5.SeedFixedIntegers(seeds5);
/***************************************************************************
* Build a 4D random source, and convert it to 5D.
**************************************************************************/
LatticeFermion test4(&UGrid);
LatticeFermion test5(FGrid);
LatticeFermion check5(FGrid);
gaussian(rng4, test4);
make_5D(test4, test5, Ls);
make_5D_with_gammas(test4, check5, Ls);
test5 -= check5;
std::cout << "4D -> 5D comparison, diff = " << Grid::sqrt(norm2(test5)) << std::endl;
/***************************************************************************
* Build a 5D random source, and project down to 4D.
**************************************************************************/
LatticeFermion check4(&UGrid);
gaussian(rng5, test5);
check5 = test5;
make_4D(test5, test4, Ls);
make_4D_with_gammas(check5, check4, Ls);
test4 -= check4;
std::cout << "5D -> 4D comparison, diff = " << Grid::sqrt(norm2(test4)) << std::endl;
/***************************************************************************
* Convert a propagator to a fermion & back.
**************************************************************************/
LatticeFermion ferm(&UGrid);
LatticePropagator prop(&UGrid), ref(&UGrid);
gaussian(rng4, prop);
// Define variables for sanity checking a single site.
typename SpinColourVector::scalar_object fermSite;
typename SpinColourMatrix::scalar_object propSite;
std::vector<int> site(Nd, 0);
for (int s = 0; s < Ns; ++s)
for (int c = 0; c < Nc; ++c)
{
ref = prop;
PropToFerm(ferm, prop, s, c);
FermToProp(prop, ferm, s, c);
std::cout << "Spin = " << s << ", Colour = " << c << std::endl;
ref -= prop;
std::cout << "Prop->Ferm->Prop test, diff = " << Grid::sqrt(norm2(ref)) << std::endl;
peekSite(fermSite, ferm, site);
peekSite(propSite, prop, site);
for (int s2 = 0; s2 < Ns; ++s2)
for (int c2 = 0; c2 < Nc; ++c2)
{
//if (propSite()(s2, s)(c2, c) != fermSite()(s2)(c2))
//{
std::cout << propSite()(s2, s)(c2, c) << " != "
<< fermSite()(s2)(c2) << " for spin = " << s2
<< ", col = " << c2 << std::endl;
//}
}
}
Grid_finalize();
return EXIT_SUCCESS;
}