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Introduce accelerator friendly expression template rewrite.

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Must obtain and access lattice indexing through a view object that is safe
to copy construct in copy to GPU (without copying the lattice).
This commit is contained in:
paboyle
2018-03-04 16:03:19 +00:00
parent dad7862f91
commit 0e6197fbed
16 changed files with 470 additions and 513 deletions
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6
lib/lattice/Lattice_coordinate.h
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@@ -42,20 +42,22 @@ template<class iobj> inline void LatticeCoordinate(Lattice<iobj> &l,int mu)
ExtractBuffer<scalar_type> mergebuf(Nsimd);
vector_type vI;
auto l_v = l.View();
for(int o=0;o<grid->oSites();o++){
for(int i=0;i<grid->iSites();i++){
grid->RankIndexToGlobalCoor(grid->ThisRank(),o,i,gcoor);
mergebuf[i]=(Integer)gcoor[mu];
}
merge<vector_type,scalar_type>(vI,mergebuf);
l[o]=vI;
l_v[o]=vI;
}
};
// LatticeCoordinate();
// FIXME for debug; deprecate this; made obscelete by
template<class vobj> void lex_sites(Lattice<vobj> &l){
Real *v_ptr = (Real *)&l[0];
auto l_v = l.View();
Real *v_ptr = (Real *)&l_v[0];
size_t o_len = l.Grid()->oSites();
size_t v_len = sizeof(vobj)/sizeof(vRealF);
size_t vec_len = vRealF::Nsimd();