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114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./tests/Test_quenched_update.cc
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Copyright (C) 2015
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Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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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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#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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int main (int argc, char ** argv)
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{
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Grid_init(&argc,&argv);
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std::vector<int> latt({8,8,8,8});
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GridCartesian * grid = SpaceTimeGrid::makeFourDimGrid(latt,
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GridDefaultSimd(Nd,vComplex::Nsimd()),
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GridDefaultMpi());
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GridRedBlackCartesian * rbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(grid);
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///////////////////////////////
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// Configuration of known size
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///////////////////////////////
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LatticeGaugeField Umu(grid);
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Umu=1.0; // Cold start
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// RNG set up for test
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std::vector<int> pseeds({1,2,3,4,5}); // once I caught a fish alive
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std::vector<int> sseeds({6,7,8,9,10});// then i let it go again
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GridParallelRNG pRNG(grid); pRNG.SeedFixedIntegers(pseeds);
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GridSerialRNG sRNG; sRNG.SeedFixedIntegers(sseeds);
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// SU<Nc> colour operatoions
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LatticeColourMatrix link(grid);
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LatticeColourMatrix staple(grid);
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// Apply heatbath to the link
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RealD beta=6.0;
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int subsets[2] = { Even, Odd};
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LatticeInteger one(rbGrid); one = 1; // fill with ones
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LatticeInteger mask(grid);
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for(int sweep=0;sweep<1000;sweep++){
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RealD plaq = ColourWilsonLoops::avgPlaquette(Umu);
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std::cout<<GridLogMessage<<"sweep "<<sweep<<" PLAQUETTE "<<plaq<<std::endl;
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for( int cb=0;cb<2;cb++ ) {
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one.Checkerboard()=subsets[cb];
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mask= Zero();
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setCheckerboard(mask,one);
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// std::cout<<GridLogMessage<<mask<<std::endl;
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for(int mu=0;mu<Nd;mu++){
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// Get Link and Staple term in action; must contain Beta and
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// any other coeffs
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ColourWilsonLoops::Staple(staple,Umu,mu);
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link = PeekIndex<LorentzIndex>(Umu,mu);
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for( int subgroup=0;subgroup<SU<Nc>::su2subgroups();subgroup++ ) {
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// update Even checkerboard
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SU<Nc>::SubGroupHeatBath(sRNG,pRNG,beta,link,staple,subgroup,20,mask);
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}
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PokeIndex<LorentzIndex>(Umu,link,mu);
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//reunitarise link;
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ProjectOnGroup(Umu);
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}
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}
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}
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Grid_finalize();
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}
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