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Meson field test

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This commit is contained in:
Peter Boyle
2024-10-18 15:42:30 +00:00
parent a78a61d76f
commit 5cc4f3241d
3 changed files with 203 additions and 64 deletions
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60
tests/Test_meson_field.cc
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@ -56,13 +56,9 @@ int main(int argc, char *argv[])
// MesonField lhs and rhs vectors
std::vector<FermionField> phi(VDIM,&grid);
std::vector<FermionField> rho(VDIM,&grid);
FermionField rho_tmp(&grid);
std::cout << GridLogMessage << "Initialising random meson fields" << std::endl;
for (unsigned int i = 0; i < VDIM; ++i){
random(pRNG,phi[i]);
random(pRNG,rho_tmp); //ideally only nonzero on t=0
rho[i] = where((t==TSRC), rho_tmp, 0.*rho_tmp); //ideally only nonzero on t=0
}
std::cout << GridLogMessage << "Meson fields initialised, rho non-zero only for t = " << TSRC << std::endl;
@ -82,7 +78,7 @@ int main(int argc, char *argv[])
{1.,1.,1.},
{2.,0.,0.}
};
// 5 momenta x VDIMxVDIM = 125 calls (x 16 spins) 1.4s => 1400/125 ~10ms per call
std::cout << GridLogMessage << "Meson fields will be created for " << Gmu.size() << " Gamma matrices and " << momenta.size() << " momenta." << std::endl;
std::cout << GridLogMessage << "Computing complex phases" << std::endl;
@ -102,28 +98,47 @@ int main(int argc, char *argv[])
std::cout << GridLogMessage << "Computing complex phases done." << std::endl;
Eigen::Tensor<ComplexD,5, Eigen::RowMajor> Mpp(momenta.size(),Gmu.size(),Nt,VDIM,VDIM);
Eigen::Tensor<ComplexD,5, Eigen::RowMajor> Mpr(momenta.size(),Gmu.size(),Nt,VDIM,VDIM);
Eigen::Tensor<ComplexD,5, Eigen::RowMajor> Mrr(momenta.size(),Gmu.size(),Nt,VDIM,VDIM);
Eigen::Tensor<ComplexD,5, Eigen::RowMajor> Mpp_gpu(momenta.size(),Gmu.size(),Nt,VDIM,VDIM);
// timer
double start,stop;
//execute meson field routine
std::cout << GridLogMessage << "Meson Field Warmup Begin" << std::endl;
A2Autils<WilsonImplR>::MesonField(Mpp,&phi[0],&phi[0],Gmu,phases,Tp);
std::cout << GridLogMessage << "Meson Field Timing Begin" << std::endl;
start = usecond();
A2Autils<WilsonImplR>::MesonField(Mpp,&phi[0],&phi[0],Gmu,phases,Tp);
stop = usecond();
std::cout << GridLogMessage << "M(phi,phi) created, execution time " << stop-start << " us" << std::endl;
start = usecond();
/* Ideally, for this meson field we could pass TSRC (even better a list of timeslices)
* to the routine so that all the compnents which are predictably equal to zero are not computed. */
A2Autils<WilsonImplR>::MesonField(Mpr,&phi[0],&rho[0],Gmu,phases,Tp);
stop = usecond();
std::cout << GridLogMessage << "M(phi,rho) created, execution time " << stop-start << " us" << std::endl;
start = usecond();
A2Autils<WilsonImplR>::MesonField(Mrr,&rho[0],&rho[0],Gmu,phases,Tp);
stop = usecond();
std::cout << GridLogMessage << "M(rho,rho) created, execution time " << stop-start << " us" << std::endl;
std::cout << GridLogMessage << "Meson Field GPU Warmup Begin" << std::endl;
A2Autils<WilsonImplR>::MesonFieldGPU(Mpp_gpu,&phi[0],&phi[0],Gmu,phases,Tp);
std::cout << GridLogMessage << "Meson Field GPU Timing Begin" << std::endl;
start = usecond();
A2Autils<WilsonImplR>::MesonFieldGPU(Mpp_gpu,&phi[0],&phi[0],Gmu,phases,Tp);
stop = usecond();
std::cout << GridLogMessage << "M_gpu(phi,phi) created, execution time " << stop-start << " us" << std::endl;
for(int mom=0;mom<momenta.size();mom++){
for(int mu=0;mu<Gmu.size();mu++){
for(int t=0;t<Nt;t++){
for(int v=0;v<VDIM;v++){
for(int w=0;w<VDIM;w++){
std::cout << GridLogMessage
<< " " << mom
<< " " << mu
<< " " << t
<< " " << v
<< " " << w
<< " " << Mpp_gpu(mom,mu,t,v,w)
<< " " << Mpp(mom,mu,t,v,w) << std::endl;
}
}
}
}
}
std::string FileName = "Meson_Fields";
#ifdef HAVE_HDF5
using Default_Reader = Grid::Hdf5Reader;
@ -134,12 +149,11 @@ int main(int argc, char *argv[])
using Default_Writer = Grid::BinaryWriter;
FileName.append(".bin");
#endif
Default_Writer w(FileName);
write(w,"phi_phi",Mpp);
write(w,"phi_rho",Mpr);
write(w,"rho_rho",Mrr);
{
Default_Writer w(FileName);
write(w,"phi_phi",Mpp);
write(w,"phi_phi_gpu",Mpp_gpu);
}
// epilogue
std::cout << GridLogMessage << "Grid is finalizing now" << std::endl;
Grid_finalize();