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Merge pull request #24 from ThomasWurm/feature/gpt

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Put GlobalSum outside the slice loop in sliceSum
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Christoph Lehner 2021-03-08 16:01:47 +01:00 committed by GitHub
commit 49ecbc81d4
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1 changed files with 6 additions and 6 deletions
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12
Grid/lattice/Lattice_reduction.h
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@ -361,6 +361,7 @@ template<class vobj> inline void sliceSum(const Lattice<vobj> &Data,std::vector<
// But easily avoided by using double precision fields
///////////////////////////////////////////////////////
typedef typename vobj::scalar_object sobj;
typedef typename vobj::scalar_object::scalar_type scalar_type;
GridBase *grid = Data.Grid();
assert(grid!=NULL);
@ -419,20 +420,19 @@ template<class vobj> inline void sliceSum(const Lattice<vobj> &Data,std::vector<
}
// sum over nodes.
sobj gsum;
for(int t=0;t<fd;t++){
int pt = t/ld; // processor plane
int lt = t%ld;
if ( pt == grid->_processor_coor[orthogdim] ) {
gsum=lsSum[lt];
result[t]=lsSum[lt];
} else {
gsum=Zero();
result[t]=Zero();
}
grid->GlobalSum(gsum);
result[t]=gsum;
}
scalar_type * ptr = (scalar_type *) &result[0];
int words = fd*sizeof(sobj)/sizeof(scalar_type);
grid->GlobalSumVector(ptr, words);
}
template<class vobj>