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Faster integer handling avoid push_back

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paboyle 2016-10-17 16:16:44 +01:00
parent c8079e6621
commit bc1a4d40ba
1 changed files with 4 additions and 4 deletions
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8
lib/Stencil.h
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@ -71,7 +71,7 @@
namespace Grid { namespace Grid {
template<class vobj,class cobj,class compressor> void template<class vobj,class cobj,class compressor> void
Gather_plane_simple_stencil (const Lattice<vobj> &rhs,std::vector<cobj,alignedAllocator<cobj> > &buffer,int dimension,int plane,int cbmask,compressor &compress, int off=0, Gather_plane_simple_stencil (const Lattice<vobj> &rhs,std::vector<cobj,alignedAllocator<cobj> > &buffer,int dimension,int plane,int cbmask,compressor &compress, int off,
double &t_table ,double & t_data ) double &t_table ,double & t_data )
{ {
int rd = rhs._grid->_rdimensions[dimension]; int rd = rhs._grid->_rdimensions[dimension];
@ -103,20 +103,20 @@ PARALLEL_NESTED_LOOP2
} else { } else {
int bo=0; int bo=0;
t_table-=usecond(); t_table-=usecond();
std::vector<std::pair<int,int> > table; std::vector<std::pair<int,int> > table(e1*e2);
for(int n=0;n<e1;n++){ for(int n=0;n<e1;n++){
for(int b=0;b<e2;b++){ for(int b=0;b<e2;b++){
int o = n*stride; int o = n*stride;
int ocb=1<<rhs._grid->CheckerBoardFromOindexTable(o+b); int ocb=1<<rhs._grid->CheckerBoardFromOindexTable(o+b);
if ( ocb &cbmask ) { if ( ocb &cbmask ) {
table.push_back(std::pair<int,int> (bo++,o+b)); table[bo]=std::pair<int,int>(bo,o+b); bo++;
} }
} }
} }
t_table+=usecond(); t_table+=usecond();
t_data-=usecond(); t_data-=usecond();
PARALLEL_FOR_LOOP PARALLEL_FOR_LOOP
for(int i=0;i<table.size();i++){ for(int i=0;i<bo;i++){
buffer[off+table[i].first]=compress(rhs._odata[so+table[i].second]); buffer[off+table[i].first]=compress(rhs._odata[so+table[i].second]);
} }
t_data+=usecond(); t_data+=usecond();