Revision 8ed0b57b092159ccc1123f739abc0179a182ca1b authored by Peter Boyle on 05 October 2021, 15:41:03 UTC, committed by Peter Boyle on 05 October 2021, 15:41:03 UTC
Print PCI device IDs on node 0
1 parent cffc736
Test_fft_gfix.cc
/*************************************************************************************
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();
Coordinate latt_size = GridDefaultLatt();
Coordinate simd_layout( { vComplex::Nsimd(),1,1,1});
Coordinate 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;
// int coulomb_dir = -1;
int coulomb_dir = Nd-1;
LatticeGaugeField Umu(&GRID);
LatticeGaugeField Urnd(&GRID);
LatticeGaugeField Uorg(&GRID);
LatticeGaugeField Utmp(&GRID);
LatticeColourMatrix g(&GRID); // Gauge xform
LatticeColourMatrix xform1(&GRID); // Gauge xform
LatticeColourMatrix xform2(&GRID); // Gauge xform
LatticeColourMatrix xform3(&GRID); // Gauge xform
SU<Nc>::ColdConfiguration(pRNG,Umu); // Unit gauge
Uorg=Umu;
Urnd=Umu;
SU<Nc>::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,xform1,alpha,10000,1.0e-12, 1.0e-12,false);
// Check the gauge xform matrices
Utmp=Urnd;
SU<Nc>::GaugeTransform(Utmp,xform1);
Utmp = Utmp - Umu;
std::cout << " Norm Difference of xformed gauge "<< norm2(Utmp) << std::endl;
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,xform2,alpha,10000,1.0e-12, 1.0e-12,true);
Utmp=Urnd;
SU<Nc>::GaugeTransform(Utmp,xform2);
Utmp = Utmp - Umu;
std::cout << " Norm Difference of xformed gauge "<< norm2(Utmp) << std::endl;
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;
SU<Nc>::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;
std::cout<< "*****************************************************************" <<std::endl;
std::cout<< "* Testing Fourier accelerated fixing to coulomb gauge *" <<std::endl;
std::cout<< "*****************************************************************" <<std::endl;
Umu=Urnd;
SU<Nc>::HotConfiguration(pRNG,Umu); // Unit gauge
plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
std::cout << " Initial plaquette "<<plaq << std::endl;
FourierAcceleratedGaugeFixer<PeriodicGimplR>::SteepestDescentGaugeFix(Umu,xform3,alpha,10000,1.0e-12, 1.0e-12,true,coulomb_dir);
std::cout << Umu<<std::endl;
plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
std::cout << " Final plaquette "<<plaq << std::endl;
Grid_finalize();
}
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...