mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 07:55:35 +00:00
117 lines
4.2 KiB
C++
117 lines
4.2 KiB
C++
/*************************************************************************************
|
|
|
|
grid` physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./tests/Test_cshift.cc
|
|
|
|
Copyright (C) 2015
|
|
|
|
Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
|
|
Author: Peter Boyle <paboyle@ph.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 */
|
|
#include <Grid/Grid.h>
|
|
|
|
using namespace Grid;
|
|
;
|
|
|
|
int main (int argc, char ** argv)
|
|
{
|
|
std::vector<int> seeds({1,2,3,4});
|
|
|
|
Grid_init(&argc,&argv);
|
|
|
|
int threads = GridThread::GetThreads();
|
|
|
|
std::vector<int> latt_size = GridDefaultLatt();
|
|
std::vector<int> simd_layout( { vComplex::Nsimd(),1,1,1});
|
|
std::vector<int> mpi_layout = GridDefaultMpi();
|
|
|
|
int vol = 1;
|
|
for(int d=0;d<latt_size.size();d++){
|
|
vol = vol * latt_size[d];
|
|
}
|
|
|
|
GridCartesian GRID(latt_size,simd_layout,mpi_layout);
|
|
GridSerialRNG sRNG; sRNG.SeedFixedIntegers(seeds); // naughty seeding
|
|
GridParallelRNG pRNG(&GRID); pRNG.SeedFixedIntegers(seeds);
|
|
|
|
FFT theFFT(&GRID);
|
|
|
|
std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
|
|
|
|
std::cout<< "*****************************************************************" <<std::endl;
|
|
std::cout<< "* Testing we can gauge fix steep descent a RGT of Unit gauge *" <<std::endl;
|
|
std::cout<< "*****************************************************************" <<std::endl;
|
|
|
|
LatticeGaugeField Umu(&GRID);
|
|
LatticeGaugeField Urnd(&GRID);
|
|
LatticeGaugeField Uorg(&GRID);
|
|
LatticeColourMatrix g(&GRID); // Gauge xform
|
|
|
|
|
|
SU3::ColdConfiguration(pRNG,Umu); // Unit gauge
|
|
Uorg=Umu;
|
|
Urnd=Umu;
|
|
|
|
SU3::RandomGaugeTransform(pRNG,Urnd,g); // Unit gauge
|
|
|
|
Real plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
|
|
std::cout << " Initial plaquette "<<plaq << std::endl;
|
|
|
|
Real alpha=0.1;
|
|
|
|
Umu = Urnd;
|
|
FourierAcceleratedGaugeFixer<PeriodicGimplR>::SteepestDescentGaugeFix(Umu,alpha,10000,1.0e-12, 1.0e-12,false);
|
|
|
|
plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
|
|
std::cout << " Final plaquette "<<plaq << std::endl;
|
|
|
|
Uorg = Uorg - Umu;
|
|
std::cout << " Norm Difference "<< norm2(Uorg) << std::endl;
|
|
std::cout << " Norm "<< norm2(Umu) << std::endl;
|
|
|
|
|
|
std::cout<< "*****************************************************************" <<std::endl;
|
|
std::cout<< "* Testing Fourier accelerated fixing *" <<std::endl;
|
|
std::cout<< "*****************************************************************" <<std::endl;
|
|
Umu=Urnd;
|
|
FourierAcceleratedGaugeFixer<PeriodicGimplR>::SteepestDescentGaugeFix(Umu,alpha,10000,1.0e-12, 1.0e-12,true);
|
|
|
|
plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
|
|
std::cout << " Final plaquette "<<plaq << std::endl;
|
|
|
|
std::cout<< "*****************************************************************" <<std::endl;
|
|
std::cout<< "* Testing non-unit configuration *" <<std::endl;
|
|
std::cout<< "*****************************************************************" <<std::endl;
|
|
|
|
SU3::HotConfiguration(pRNG,Umu); // Unit gauge
|
|
|
|
plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
|
|
std::cout << " Initial plaquette "<<plaq << std::endl;
|
|
|
|
FourierAcceleratedGaugeFixer<PeriodicGimplR>::SteepestDescentGaugeFix(Umu,alpha,10000,1.0e-12, 1.0e-12,true);
|
|
|
|
plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
|
|
std::cout << " Final plaquette "<<plaq << std::endl;
|
|
|
|
|
|
Grid_finalize();
|
|
}
|