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Build reorg with which I am a bit happier

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Peter Boyle
2015-04-18 21:22:50 +01:00
parent c94b7cc43c
commit e5a25dfcb1
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45
lib/lattice/Grid_lattice_reduction.h Normal file
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#ifndef GRID_LATTICE_REDUCTION_H
#define GRID_LATTICE_REDUCTION_H
namespace Grid {
////////////////////////////////////////////////////////////////////////////////////////////////////
// Reduction operations
////////////////////////////////////////////////////////////////////////////////////////////////////
template<class vobj>
inline RealD norm2(const Lattice<vobj> &arg){
typedef typename vobj::scalar_type scalar;
typedef typename vobj::vector_type vector;
decltype(innerProduct(arg._odata[0],arg._odata[0])) vnrm=zero;
scalar nrm;
//FIXME make this loop parallelisable
vnrm=zero;
for(int ss=0;ss<arg._grid->oSites(); ss++){
vnrm = vnrm + innerProduct(arg._odata[ss],arg._odata[ss]);
}
vector vvnrm =TensorRemove(vnrm) ;
nrm = Reduce(vvnrm);
arg._grid->GlobalSum(nrm);
return real(nrm);
}
template<class vobj>
inline auto innerProduct(const Lattice<vobj> &left,const Lattice<vobj> &right) ->decltype(innerProduct(left._odata[0],right._odata[0]))
{
typedef typename vobj::scalar_type scalar;
decltype(innerProduct(left._odata[0],right._odata[0])) vnrm=zero;
scalar nrm;
//FIXME make this loop parallelisable
for(int ss=0;ss<left._grid->oSites(); ss++){
vnrm = vnrm + innerProduct(left._odata[ss],right._odata[ss]);
}
nrm = Reduce(vnrm);
right._grid->GlobalSum(nrm);
return nrm;
}
}
#endif