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Merge branch 'feature/distil' of github.com:mmphys/Grid into feature/distil

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ferben 2019-11-13 11:51:14 +00:00
commit 65b3059bd7
1 changed files with 12 additions and 21 deletions
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33
Hadrons/Modules/MDistil/Distil.hpp
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@ -105,33 +105,24 @@ inline void RotateEigen(std::vector<LatticeColourVector> & evec)
auto grid = evec[0].Grid();
Coordinate siteFirst(grid->Nd(),0);
peekSite(cv0, evec[0], siteFirst);
Grid::Complex cplx0 = cv0()()(0);
const std::complex<Real> cplx0{cv0()()(0).real(), cv0()()(0).imag()};
if( cplx0.imag() == 0 )
std::cout << GridLogMessage << "RotateEigen() : Site 0 : " << cplx0 << " => already meets phase convention" << std::endl;
LOG(Message) << "RotateEigen() : Site 0 : " << cplx0 << " => already meets phase convention" << std::endl;
else
{
const Real cplx0_mag = Grid::sqrt(cplx0.real()*cplx0.real()+cplx0.imag()*cplx0.imag());
Grid::Complex phase{cplx0 / Grid::Complex(cplx0_mag, 0) };
phase.imag(-phase.imag());
#ifdef GRID_NVCC
//const Real cplx0_mag = thrust::abs(cplx0);
//const Grid::Complex phase = thrust::conj(cplx0 / cplx0_mag);
const Real argphase = thrust::arg(phase);
#else
//const Real cplx0_mag = std::abs(cplx0);
//const Grid::Complex phase = std::conj(cplx0 / cplx0_mag);
const Real argphase = std::arg(phase);
#endif
std::cout << GridLogMessage << "RotateEigen() : Site 0 : |" << cplx0 << "|=" << cplx0_mag << " => phase=" << (argphase / M_PI) << " pi" << std::endl;
const Real cplx0_mag{ std::abs(cplx0) };
const std::complex<Real> std_phase{std::conj(cplx0/cplx0_mag)};
LOG(Message) << "RotateEigen() : Site 0 : |" << cplx0 << "|=" << cplx0_mag
<< " => phase=" << (std::arg(std_phase) / M_PI) << " pi" << std::endl;
{
// TODO: Only really needed on the master slice
const Grid::Complex phase{std_phase.real(),std_phase.imag()};
for( int k = 0 ; k < evec.size() ; k++ )
evec[k] *= phase;
if(grid->IsBoss()){
for( int c = 0 ; c < Nc ; c++ )
cv0()()(c) *= phase;
cplx0.imag(0); // This assumes phase convention is real, positive (so I get rid of rounding error)
//pokeSite(cv0, evec[0], siteFirst);
// Get rid of the rounding error in imaginary phase on the very first site
if(grid->IsBoss())
{
peekSite(cv0, evec[0], siteFirst);
cv0()()(0).imag(0); // this should be zero after the phase multiply - force it to be so
pokeLocalSite(cv0, evec[0], siteFirst);
}
}