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Grid/lib/qcd/action/fermion/WilsonFermion5D.cc
paboyle 9b6ab6db16 simd in 5th dimension support
2016-04-19 15:38:01 -07:00

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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/qcd/action/fermion/WilsonFermion5D.cc
Copyright (C) 2015
Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
Author: paboyle <paboyle@ph.ed.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution directory
*************************************************************************************/
/* END LEGAL */
#include <Grid.h>
#include <PerfCount.h>
namespace Grid {
namespace QCD {
// S-direction is INNERMOST and takes no part in the parity.
const std::vector<int> WilsonFermion5DStatic::directions ({1,2,3,4, 1, 2, 3, 4});
const std::vector<int> WilsonFermion5DStatic::displacements({1,1,1,1,-1,-1,-1,-1});
int WilsonFermion5DStatic::HandOptDslash;
int WilsonFermion5DStatic::AsmOptDslash;
// 5d lattice for DWF.
template<class Impl>
WilsonFermion5D<Impl>::WilsonFermion5D(GaugeField &_Umu,
GridCartesian &FiveDimGrid,
GridRedBlackCartesian &FiveDimRedBlackGrid,
GridCartesian &FourDimGrid,
GridRedBlackCartesian &FourDimRedBlackGrid,
RealD _M5,const ImplParams &p) :
Kernels(p),
_FiveDimGrid(&FiveDimGrid),
_FiveDimRedBlackGrid(&FiveDimRedBlackGrid),
_FourDimGrid(&FourDimGrid),
_FourDimRedBlackGrid(&FourDimRedBlackGrid),
Stencil (_FiveDimGrid,npoint,Even,directions,displacements),
StencilEven(_FiveDimRedBlackGrid,npoint,Even,directions,displacements), // source is Even
StencilOdd (_FiveDimRedBlackGrid,npoint,Odd ,directions,displacements), // source is Odd
M5(_M5),
Umu(_FourDimGrid),
UmuEven(_FourDimRedBlackGrid),
UmuOdd (_FourDimRedBlackGrid),
Lebesgue(_FourDimGrid),
LebesgueEvenOdd(_FourDimRedBlackGrid)
{
// some assertions
assert(FiveDimGrid._ndimension==5);
assert(FourDimGrid._ndimension==4);
assert(FiveDimRedBlackGrid._ndimension==5);
assert(FourDimRedBlackGrid._ndimension==4);
assert(FiveDimRedBlackGrid._checker_dim==1);
// Dimension zero of the five-d is the Ls direction
Ls=FiveDimGrid._fdimensions[0];
assert(FiveDimRedBlackGrid._fdimensions[0]==Ls);
assert(FiveDimRedBlackGrid._processors[0] ==1);
assert(FiveDimRedBlackGrid._simd_layout[0]==1);
assert(FiveDimGrid._processors[0] ==1);
assert(FiveDimGrid._simd_layout[0] ==1);
// Other dimensions must match the decomposition of the four-D fields
for(int d=0;d<4;d++){
assert(FourDimRedBlackGrid._fdimensions[d] ==FourDimGrid._fdimensions[d]);
assert(FiveDimRedBlackGrid._fdimensions[d+1]==FourDimGrid._fdimensions[d]);
assert(FourDimRedBlackGrid._processors[d] ==FourDimGrid._processors[d]);
assert(FiveDimRedBlackGrid._processors[d+1] ==FourDimGrid._processors[d]);
assert(FourDimRedBlackGrid._simd_layout[d] ==FourDimGrid._simd_layout[d]);
assert(FiveDimRedBlackGrid._simd_layout[d+1]==FourDimGrid._simd_layout[d]);
assert(FiveDimGrid._fdimensions[d+1] ==FourDimGrid._fdimensions[d]);
assert(FiveDimGrid._processors[d+1] ==FourDimGrid._processors[d]);
assert(FiveDimGrid._simd_layout[d+1] ==FourDimGrid._simd_layout[d]);
}
// Allocate the required comms buffer
ImportGauge(_Umu);
alltime=0;
commtime=0;
jointime=0;
dslashtime=0;
dslash1time=0;
}
template<class Impl>
WilsonFermion5D<Impl>::WilsonFermion5D(int simd, GaugeField &_Umu,
GridCartesian &FiveDimGrid,
GridRedBlackCartesian &FiveDimRedBlackGrid,
GridCartesian &FourDimGrid,
GridRedBlackCartesian &FourDimRedBlackGrid,
RealD _M5,const ImplParams &p) :
Kernels(p),
_FiveDimGrid (&FiveDimGrid),
_FiveDimRedBlackGrid(&FiveDimRedBlackGrid),
_FourDimGrid (&FourDimGrid),
_FourDimRedBlackGrid(&FourDimRedBlackGrid),
Stencil (_FiveDimGrid,npoint,Even,directions,displacements),
StencilEven(_FiveDimRedBlackGrid,npoint,Even,directions,displacements), // source is Even
StencilOdd (_FiveDimRedBlackGrid,npoint,Odd ,directions,displacements), // source is Odd
M5(_M5),
Umu(_FourDimGrid),
UmuEven(_FourDimRedBlackGrid),
UmuOdd (_FourDimRedBlackGrid),
Lebesgue(_FourDimGrid),
LebesgueEvenOdd(_FourDimRedBlackGrid)
{
int nsimd = Simd::Nsimd();
// some assertions
assert(FiveDimGrid._ndimension==5);
assert(FiveDimRedBlackGrid._ndimension==5);
assert(FiveDimRedBlackGrid._checker_dim==0); // Checkerboard the s-direction
assert(FourDimGrid._ndimension==4);
assert(FourDimRedBlackGrid._ndimension==4);
// Dimension zero of the five-d is the Ls direction
Ls=FiveDimGrid._fdimensions[0];
assert(FiveDimGrid._processors[0] ==1);
assert(FiveDimGrid._simd_layout[0] ==nsimd);
assert(FiveDimRedBlackGrid._fdimensions[0]==Ls);
assert(FiveDimRedBlackGrid._processors[0] ==1);
assert(FiveDimRedBlackGrid._simd_layout[0]==nsimd);
// Other dimensions must match the decomposition of the four-D fields
for(int d=0;d<4;d++){
assert(FourDimRedBlackGrid._fdimensions[d] ==FourDimGrid._fdimensions[d]);
assert(FiveDimRedBlackGrid._fdimensions[d+1]==FourDimGrid._fdimensions[d]);
assert(FourDimRedBlackGrid._processors[d] ==FourDimGrid._processors[d]);
assert(FiveDimRedBlackGrid._processors[d+1] ==FourDimGrid._processors[d]);
assert(FourDimGrid._simd_layout[d]=1);
assert(FourDimRedBlackGrid._simd_layout[d] ==1);
assert(FourDimRedBlackGrid._simd_layout[d] ==1);
assert(FiveDimRedBlackGrid._simd_layout[d+1]==1);
assert(FiveDimGrid._fdimensions[d+1] ==FourDimGrid._fdimensions[d]);
assert(FiveDimGrid._processors[d+1] ==FourDimGrid._processors[d]);
assert(FiveDimGrid._simd_layout[d+1] ==FourDimGrid._simd_layout[d]);
}
// Allocate the required comms buffer
ImportGauge(_Umu);
}
template<class Impl>
void WilsonFermion5D<Impl>::ImportGauge(const GaugeField &_Umu)
{
GaugeField HUmu(_Umu._grid);
HUmu = _Umu*(-0.5);
Impl::DoubleStore(GaugeGrid(),Umu,HUmu);
pickCheckerboard(Even,UmuEven,Umu);
pickCheckerboard(Odd ,UmuOdd,Umu);
}
template<class Impl>
void WilsonFermion5D<Impl>::DhopDir(const FermionField &in, FermionField &out,int dir5,int disp)
{
int dir = dir5-1; // Maps to the ordering above in "directions" that is passed to stencil
// we drop off the innermost fifth dimension
// assert( (disp==1)||(disp==-1) );
// assert( (dir>=0)&&(dir<4) ); //must do x,y,z or t;
Compressor compressor(DaggerNo);
Stencil.HaloExchange(in,compressor);
int skip = (disp==1) ? 0 : 1;
int dirdisp = dir+skip*4;
int gamma = dir+(1-skip)*4;
assert(dirdisp<=7);
assert(dirdisp>=0);
PARALLEL_FOR_LOOP
for(int ss=0;ss<Umu._grid->oSites();ss++){
for(int s=0;s<Ls;s++){
int sU=ss;
int sF = s+Ls*sU;
Kernels::DiracOptDhopDir(Stencil,Umu,Stencil.comm_buf,sF,sU,in,out,dirdisp,gamma);
}
}
};
template<class Impl>
void WilsonFermion5D<Impl>::DerivInternal(StencilImpl & st,
DoubledGaugeField & U,
GaugeField &mat,
const FermionField &A,
const FermionField &B,
int dag)
{
assert((dag==DaggerNo) ||(dag==DaggerYes));
conformable(st._grid,A._grid);
conformable(st._grid,B._grid);
Compressor compressor(dag);
FermionField Btilde(B._grid);
FermionField Atilde(B._grid);
st.HaloExchange(B,compressor);
Atilde=A;
for(int mu=0;mu<Nd;mu++){
////////////////////////////////////////////////////////////////////////
// Flip gamma if dag
////////////////////////////////////////////////////////////////////////
int gamma = mu;
if ( !dag ) gamma+= Nd;
////////////////////////
// Call the single hop
////////////////////////
PARALLEL_FOR_LOOP
for(int sss=0;sss<U._grid->oSites();sss++){
for(int s=0;s<Ls;s++){
int sU=sss;
int sF = s+Ls*sU;
assert ( sF< B._grid->oSites());
assert ( sU< U._grid->oSites());
Kernels::DiracOptDhopDir(st,U,st.comm_buf,sF,sU,B,Btilde,mu,gamma);
////////////////////////////
// spin trace outer product
////////////////////////////
}
}
Impl::InsertForce5D(mat,Btilde,Atilde,mu);
}
}
template<class Impl>
void WilsonFermion5D<Impl>::DhopDeriv( GaugeField &mat,
const FermionField &A,
const FermionField &B,
int dag)
{
conformable(A._grid,FermionGrid());
conformable(A._grid,B._grid);
conformable(GaugeGrid(),mat._grid);
mat.checkerboard = A.checkerboard;
DerivInternal(Stencil,Umu,mat,A,B,dag);
}
template<class Impl>
void WilsonFermion5D<Impl>::DhopDerivEO(GaugeField &mat,
const FermionField &A,
const FermionField &B,
int dag)
{
conformable(A._grid,FermionRedBlackGrid());
conformable(GaugeRedBlackGrid(),mat._grid);
conformable(A._grid,B._grid);
assert(B.checkerboard==Odd);
assert(A.checkerboard==Even);
mat.checkerboard = Even;
DerivInternal(StencilOdd,UmuEven,mat,A,B,dag);
}
template<class Impl>
void WilsonFermion5D<Impl>::Report(void)
{
std::cout<<GridLogMessage << "******************** WilsonFermion"<<std::endl;
std::cout<<GridLogMessage << "Wilson5d time "<<alltime <<" us"<<std::endl;
std::cout<<GridLogMessage << "HaloBegin time "<<commtime <<" us"<<std::endl;
std::cout<<GridLogMessage << "Dslash time "<<dslashtime<<" us"<<std::endl;
std::cout<<GridLogMessage << "Dslash1 time "<<dslash1time<<" us"<<std::endl;
std::cout<<GridLogMessage << "HaloComplete time "<<jointime<<" us"<<std::endl;
std::cout<<GridLogMessage << "******************** Stencil"<<std::endl;
std::cout<<GridLogMessage << "Stencil all gather time "<<Stencil.halogtime<<" us"<<std::endl;
std::cout<<GridLogMessage << "Stencil nosplice gather time "<<Stencil.nosplicetime<<" us"<<std::endl;
std::cout<<GridLogMessage << "Stencil splice gather time "<<Stencil.splicetime<<" us"<<std::endl;
std::cout<<GridLogMessage << "********************"<<std::endl;
std::cout<<GridLogMessage << "Stencil gather "<<Stencil.gathertime<<" us"<<std::endl;
std::cout<<GridLogMessage << "Stencil gather simd "<<Stencil.gathermtime<<" us"<<std::endl;
std::cout<<GridLogMessage << "Stencil merge simd "<<Stencil.mergetime<<" us"<<std::endl;
std::cout<<GridLogMessage << "Stencil spin simd "<<Stencil.spintime<<" us"<<std::endl;
std::cout<<GridLogMessage << "********************"<<std::endl;
std::cout<<GridLogMessage << "Stencil MB/s "<<(double)Stencil.comms_bytes/Stencil.commtime<<std::endl;
std::cout<<GridLogMessage << "Stencil comm time "<<Stencil.commtime<<" us"<<std::endl;
std::cout<<GridLogMessage << "Stencil join time "<<Stencil.jointime<<" us"<<std::endl;
std::cout<<GridLogMessage << "********************"<<std::endl;
}
template<class Impl>
void WilsonFermion5D<Impl>::DhopDerivOE(GaugeField &mat,
const FermionField &A,
const FermionField &B,
int dag)
{
conformable(A._grid,FermionRedBlackGrid());
conformable(GaugeRedBlackGrid(),mat._grid);
conformable(A._grid,B._grid);
assert(B.checkerboard==Even);
assert(A.checkerboard==Odd);
mat.checkerboard = Odd;
DerivInternal(StencilEven,UmuOdd,mat,A,B,dag);
}
template<class Impl>
void WilsonFermion5D<Impl>::DhopInternal(StencilImpl & st, LebesgueOrder &lo,
DoubledGaugeField & U,
const FermionField &in, FermionField &out,int dag)
{
DhopInternalCommsThenCompute(st,lo,U,in,out,dag);
}
template<class Impl>
void WilsonFermion5D<Impl>::DhopInternalCommsThenCompute(StencilImpl & st, LebesgueOrder &lo,
DoubledGaugeField & U,
const FermionField &in, FermionField &out,int dag)
{
// assert((dag==DaggerNo) ||(dag==DaggerYes));
alltime-=usecond();
Compressor compressor(dag);
// Assume balanced KMP_AFFINITY; this is forced in GridThread.h
int LLs = in._grid->_rdimensions[0];
commtime -=usecond();
auto handle = st.HaloExchangeBegin(in,compressor);
st.HaloExchangeComplete(handle);
commtime +=usecond();
jointime -=usecond();
jointime +=usecond();
// Dhop takes the 4d grid from U, and makes a 5d index for fermion
// Not loop ordering and data layout.
// Designed to create
// - per thread reuse in L1 cache for U
// - 8 linear access unit stride streams per thread for Fermion for hw prefetchable.
dslashtime -=usecond();
if ( dag == DaggerYes ) {
if( this->HandOptDslash ) {
PARALLEL_FOR_LOOP
for(int ss=0;ss<U._grid->oSites();ss++){
for(int s=0;s<LLs;s++){
int sU=ss;
int sF = s+LLs*sU;
Kernels::DiracOptHandDhopSiteDag(st,U,st.comm_buf,sF,sU,in,out);
}
}
} else {
PARALLEL_FOR_LOOP
for(int ss=0;ss<U._grid->oSites();ss++){
for(int s=0;s<LLs;s++){
int sU=ss;
int sF = s+LLs*sU;
Kernels::DiracOptDhopSiteDag(st,U,st.comm_buf,sF,sU,in,out);
}
}
}
} else {
if( this->AsmOptDslash ) {
PARALLEL_FOR_LOOP
for(int ss=0;ss<U._grid->oSites();ss++){
for(int s=0;s<LLs;s++){
int sU=ss;
int sF = s+LLs*sU;
Kernels::DiracOptAsmDhopSite(st,U,st.comm_buf,sF,sU,in,out);
}
}
} else if( this->HandOptDslash ) {
PARALLEL_FOR_LOOP
for(int ss=0;ss<U._grid->oSites();ss++){
for(int s=0;s<LLs;s++){
int sU=ss;
int sF = s+LLs*sU;
Kernels::DiracOptHandDhopSite(st,U,st.comm_buf,sF,sU,in,out);
}
}
} else {
PARALLEL_FOR_LOOP
for(int ss=0;ss<U._grid->oSites();ss++){
for(int s=0;s<LLs;s++){
int sU=ss;
int sF = s+LLs*sU;
Kernels::DiracOptDhopSite(st,U,st.comm_buf,sF,sU,in,out);
}
}
}
}
dslashtime +=usecond();
alltime+=usecond();
}
template<class Impl>
void WilsonFermion5D<Impl>::DhopOE(const FermionField &in, FermionField &out,int dag)
{
conformable(in._grid,FermionRedBlackGrid()); // verifies half grid
conformable(in._grid,out._grid); // drops the cb check
assert(in.checkerboard==Even);
out.checkerboard = Odd;
DhopInternal(StencilEven,LebesgueEvenOdd,UmuOdd,in,out,dag);
}
template<class Impl>
void WilsonFermion5D<Impl>::DhopEO(const FermionField &in, FermionField &out,int dag)
{
conformable(in._grid,FermionRedBlackGrid()); // verifies half grid
conformable(in._grid,out._grid); // drops the cb check
assert(in.checkerboard==Odd);
out.checkerboard = Even;
DhopInternal(StencilOdd,LebesgueEvenOdd,UmuEven,in,out,dag);
}
template<class Impl>
void WilsonFermion5D<Impl>::Dhop(const FermionField &in, FermionField &out,int dag)
{
conformable(in._grid,FermionGrid()); // verifies full grid
conformable(in._grid,out._grid);
out.checkerboard = in.checkerboard;
DhopInternal(Stencil,Lebesgue,Umu,in,out,dag);
}
template<class Impl>
void WilsonFermion5D<Impl>::DW(const FermionField &in, FermionField &out,int dag)
{
out.checkerboard=in.checkerboard;
Dhop(in,out,dag); // -0.5 is included
axpy(out,4.0-M5,in,out);
}
FermOpTemplateInstantiate(WilsonFermion5D);
GparityFermOpTemplateInstantiate(WilsonFermion5D);
template class WilsonFermion5D<DomainWallRedBlack5dImplF>;
template class WilsonFermion5D<DomainWallRedBlack5dImplD>;
}}
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