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Improvements to the assembler interface that let us move chunks of the

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site and s loop into the kernels. This will save on function call overhead and
guarantee L2 prefetching strategy is right since OMP can't distribute the
sub-chunks of work.
This commit is contained in:
paboyle
2016-06-09 01:12:36 -07:00
parent d9408893b3
commit 55f65b81b5
10 changed files with 77 additions and 87 deletions
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33
lib/qcd/action/fermion/WilsonKernels.cc
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@@ -40,23 +40,42 @@ WilsonKernels<Impl>::WilsonKernels(const ImplParams &p): Base(p) {};
template<class Impl>
void WilsonKernels<Impl>::DiracOptDhopSite(StencilImpl &st,DoubledGaugeField &U,
std::vector<SiteHalfSpinor,alignedAllocator<SiteHalfSpinor> > &buf,
int sF,int sU,const FermionField &in, FermionField &out)
int sF,int sU,int Ls, int Ns, const FermionField &in, FermionField &out)
{
if ( AsmOpt ) WilsonKernels<Impl>::DiracOptAsmDhopSite(st,U,buf,sF,sU,in,out);
else if (HandOpt) WilsonKernels<Impl>::DiracOptHandDhopSite(st,U,buf,sF,sU,in,out);
else WilsonKernels<Impl>::DiracOptGenericDhopSite(st,U,buf,sF,sU,in,out);
if ( AsmOpt ) {
WilsonKernels<Impl>::DiracOptAsmDhopSite(st,U,buf,sF,sU,Ls,Ns,in,out);
} else {
for(int site=0;site<Ns;site++) {
for(int s=0;s<Ls;s++) {
if (HandOpt) WilsonKernels<Impl>::DiracOptHandDhopSite(st,U,buf,sF,sU,in,out);
else WilsonKernels<Impl>::DiracOptGenericDhopSite(st,U,buf,sF,sU,in,out);
sF++;
}
sU++;
}
}
}
template<class Impl>
void WilsonKernels<Impl>::DiracOptDhopSiteDag(StencilImpl &st,DoubledGaugeField &U,
std::vector<SiteHalfSpinor,alignedAllocator<SiteHalfSpinor> > &buf,
int sF,int sU,const FermionField &in, FermionField &out)
int sF,int sU,int Ls, int Ns, const FermionField &in, FermionField &out)
{
// No asm implementation yet.
// if ( AsmOpt ) WilsonKernels<Impl>::DiracOptAsmDhopSiteDag(st,U,buf,sF,sU,in,out);
// else
if (HandOpt) WilsonKernels<Impl>::DiracOptHandDhopSiteDag(st,U,buf,sF,sU,in,out);
else WilsonKernels<Impl>::DiracOptGenericDhopSiteDag(st,U,buf,sF,sU,in,out);
for(int site=0;site<Ns;site++) {
for(int s=0;s<Ls;s++) {
if (HandOpt) WilsonKernels<Impl>::DiracOptHandDhopSiteDag(st,U,buf,sF,sU,in,out);
else WilsonKernels<Impl>::DiracOptGenericDhopSiteDag(st,U,buf,sF,sU,in,out);
sF++;
}
sU++;
}
}