mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-10 07:55:35 +00:00
90 lines
2.0 KiB
C++
90 lines
2.0 KiB
C++
#include <Grid.h>
|
|
|
|
#include <qcd/utils/CovariantCshift.h>
|
|
#include <qcd/utils/WilsonLoops.h>
|
|
#include <qcd/utils/SUn.h>
|
|
|
|
using namespace std;
|
|
using namespace Grid;
|
|
using namespace Grid::QCD;
|
|
|
|
int main (int argc, char ** argv)
|
|
{
|
|
Grid_init(&argc,&argv);
|
|
|
|
std::vector<int> latt({8,8,8,8});
|
|
GridCartesian * grid = SpaceTimeGrid::makeFourDimGrid(latt,
|
|
GridDefaultSimd(Nd,vComplexF::Nsimd()),
|
|
GridDefaultMpi());
|
|
|
|
GridRedBlackCartesian * rbGrid = SpaceTimeGrid::makeFourDimRedBlackGrid(grid);
|
|
|
|
///////////////////////////////
|
|
// Configuration of known size
|
|
///////////////////////////////
|
|
LatticeGaugeField Umu(grid);
|
|
Umu=1.0; // Cold start
|
|
|
|
// RNG set up for test
|
|
std::vector<int> pseeds({1,2,3,4,5}); // once I caught a fish alive
|
|
std::vector<int> sseeds({6,7,8,9,10});// then i let it go again
|
|
GridParallelRNG pRNG(grid); pRNG.SeedFixedIntegers(pseeds);
|
|
GridSerialRNG sRNG; sRNG.SeedFixedIntegers(sseeds);
|
|
|
|
// SU3 colour operatoions
|
|
LatticeColourMatrix link(grid);
|
|
LatticeColourMatrix staple(grid);
|
|
int mu=0;
|
|
|
|
// Apply heatbath to the link
|
|
RealD beta=6.0;
|
|
|
|
int subsets[2] = { Even, Odd};
|
|
LatticeInteger one(rbGrid); one = 1; // fill with ones
|
|
LatticeInteger mask(grid);
|
|
|
|
for(int sweep=0;sweep<1000;sweep++){
|
|
|
|
RealD plaq = ColourWilsonLoops::avgPlaquette(Umu);
|
|
|
|
std::cout<<"sweep "<<sweep<<" PLAQUETTE "<<plaq<<std::endl;
|
|
|
|
for( int cb=0;cb<2;cb++ ) {
|
|
|
|
one.checkerboard=subsets[cb];
|
|
mask= zero;
|
|
setCheckerboard(mask,one);
|
|
|
|
// std::cout<<mask<<std::endl;
|
|
for(int mu=0;mu<Nd;mu++){
|
|
|
|
// Get Link and Staple term in action; must contain Beta and
|
|
// any other coeffs
|
|
ColourWilsonLoops::Staple(staple,Umu,mu);
|
|
staple = adj(staple);
|
|
|
|
link = peekIndex<LorentzIndex>(Umu,mu);
|
|
|
|
for( int subgroup=0;subgroup<SU3::su2subgroups();subgroup++ ) {
|
|
|
|
// update Even checkerboard
|
|
SU3::SubGroupHeatBath(sRNG,pRNG,beta,link,staple,subgroup,20,mask);
|
|
|
|
}
|
|
|
|
pokeIndex<LorentzIndex>(Umu,link,mu);
|
|
//reunitarise link;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
Grid_finalize();
|
|
}
|
|
|
|
|
|
|
|
|