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105 lines
4.1 KiB
C++
105 lines
4.1 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./tests/debug/Test_heatbath_dwf_eofa.cc
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Copyright (C) 2017
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: paboyle <paboyle@ph.ed.ac.uk>
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Author: David Murphy <dmurphy@phys.columbia.edu>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution directory
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*************************************************************************************/
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/* END LEGAL */
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//////////////////////////////////////////////////////////////////////////////////////////
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// This program sets up the initial pseudofermion field |Phi> = Meofa^{-1/2}*|eta>, and
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// then uses this Phi to compute the action <Phi|Meofa|Phi>.
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// If all is working, one should find that <eta|eta> = <Phi|Meofa|Phi>.
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//////////////////////////////////////////////////////////////////////////////////////////
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#include <Grid/Grid.h>
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using namespace std;
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using namespace Grid;
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;
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// Parameters for test
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const std::vector<int> grid_dim = { 8, 8, 8, 8 };
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const int Ls = 8;
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const int Npoles = 12;
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const RealD mf = 0.01;
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const RealD mpv = 1.0;
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const RealD M5 = 1.8;
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int main(int argc, char** argv)
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{
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Grid_init(&argc, &argv);
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int threads = GridThread::GetThreads();
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std::cout << GridLogMessage << "Grid is set up to use " << threads << " threads" << std::endl;
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// Initialize spacetime grid
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std::cout << GridLogMessage << "Lattice dimensions: " << grid_dim << " Ls: " << Ls << std::endl;
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GridCartesian* UGrid = SpaceTimeGrid::makeFourDimGrid(grid_dim,
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GridDefaultSimd(Nd,vComplex::Nsimd()), GridDefaultMpi());
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GridRedBlackCartesian* UrbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
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GridCartesian* FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls, UGrid);
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GridRedBlackCartesian* FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls, UGrid);
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// Set up RNGs
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std::vector<int> seeds4({1, 2, 3, 4});
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std::vector<int> seeds5({5, 6, 7, 8});
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GridSerialRNG sRNG;
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GridParallelRNG RNG5(FGrid);
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sRNG.SeedFixedIntegers(seeds5);
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RNG5.SeedFixedIntegers(seeds5);
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GridParallelRNG RNG4(UGrid);
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RNG4.SeedFixedIntegers(seeds4);
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// Random gauge field
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LatticeGaugeField Umu(UGrid);
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SU<Nc>::HotConfiguration(RNG4, Umu);
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DomainWallEOFAFermionD Lop(Umu, *FGrid, *FrbGrid, *UGrid, *UrbGrid, mf, mf, mpv, 0.0, -1, M5);
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DomainWallEOFAFermionD Rop(Umu, *FGrid, *FrbGrid, *UGrid, *UrbGrid, mpv, mf, mpv, -1.0, 1, M5);
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// Construct the action and test the heatbath (zero initial guess)
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{
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OneFlavourRationalParams Params(0.95, 100.0, 5000, 1.0e-12, Npoles);
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ConjugateGradient<LatticeFermion> CG(1.0e-12, 5000);
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ExactOneFlavourRatioPseudoFermionAction<WilsonImplR> Meofa(Lop, Rop, CG, Params, false);
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Meofa.refresh(Umu,sRNG, RNG5);
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printf("<Phi|Meofa|Phi> = %1.15e\n", Meofa.S(Umu));
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}
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// Construct the action and test the heatbath (forecasted initial guesses)
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{
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OneFlavourRationalParams Params(0.95, 100.0, 5000, 1.0e-12, Npoles);
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ConjugateGradient<LatticeFermion> CG(1.0e-12, 5000);
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ExactOneFlavourRatioPseudoFermionAction<WilsonImplR> Meofa(Lop, Rop, CG, Params, true);
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Meofa.refresh(Umu,sRNG, RNG5);
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printf("<Phi|Meofa|Phi> = %1.15e\n", Meofa.S(Umu));
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}
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return 0;
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}
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