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https://github.com/paboyle/Grid.git
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59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
#include "Grid.h"
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using namespace std;
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using namespace Grid;
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using namespace Grid::QCD;
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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_size = GridDefaultLatt();
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std::vector<int> simd_layout = GridDefaultSimd(4,vComplex::Nsimd());
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std::vector<int> mpi_layout = GridDefaultMpi();
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GridCartesian Fine(latt_size,simd_layout,mpi_layout);
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GridRedBlackCartesian RBFine(latt_size,simd_layout,mpi_layout);
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GridParallelRNG pRNG(&Fine);
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pRNG.SeedRandomDevice();
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LatticeLorentzColourMatrix U(&Fine);
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SU3::HotConfiguration(pRNG, U);
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// simplify template declaration? Strip the lorentz from the second template
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WilsonGaugeAction<LatticeLorentzColourMatrix, LatticeColourMatrix> Waction(5.6);
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Real mass=-0.77;
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WilsonFermion FermOp(U,Fine,RBFine,mass);
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ConjugateGradient<LatticeFermion> CG(1.0e-8,10000);
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ConjugateGradient<LatticeFermion> CGmd(1.0e-6,10000);
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TwoFlavourPseudoFermionAction<LatticeLorentzColourMatrix, LatticeColourMatrix,LatticeFermion>
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WilsonNf2(FermOp,CG,CG,Fine);
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//Collect actions
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ActionLevel Level1;
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Level1.push_back(&WilsonNf2);
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ActionLevel Level2(3);
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Level2.push_back(&Waction);
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ActionSet FullSet;
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FullSet.push_back(Level1);
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FullSet.push_back(Level2);
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// Create integrator
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typedef MinimumNorm2 IntegratorAlgorithm;// change here to change the algorithm
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// typedef LeapFrog IntegratorAlgorithm;// change here to change the algorithm
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IntegratorParameters MDpar(12,20,1.0);
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std::vector<int> rel ={1};
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Integrator<IntegratorAlgorithm> MDynamics(&Fine,MDpar, FullSet);
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// Create HMC
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HMCparameters HMCpar;
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HybridMonteCarlo<IntegratorAlgorithm> HMC(HMCpar, MDynamics);
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HMC.evolve(U);
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}
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