mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-14 09:45:36 +00:00
214 lines
6.7 KiB
C++
214 lines
6.7 KiB
C++
#include <Grid.h>
|
|
|
|
namespace Grid {
|
|
namespace QCD {
|
|
|
|
// S-direction is INNERMOST and takes no part in the parity.
|
|
const std::vector<int> WilsonFermion5D::directions ({1,2,3,4, 1, 2, 3, 4});
|
|
const std::vector<int> WilsonFermion5D::displacements({1,1,1,1,-1,-1,-1,-1});
|
|
|
|
int WilsonFermion5D::HandOptDslash;
|
|
|
|
// 5d lattice for DWF.
|
|
WilsonFermion5D::WilsonFermion5D(LatticeGaugeField &_Umu,
|
|
GridCartesian &FiveDimGrid,
|
|
GridRedBlackCartesian &FiveDimRedBlackGrid,
|
|
GridCartesian &FourDimGrid,
|
|
GridRedBlackCartesian &FourDimRedBlackGrid,
|
|
RealD _M5) :
|
|
_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
|
|
comm_buf.resize(Stencil._unified_buffer_size); // this is always big enough to contain EO
|
|
|
|
DoubleStore(Umu,_Umu);
|
|
pickCheckerboard(Even,UmuEven,Umu);
|
|
pickCheckerboard(Odd ,UmuOdd,Umu);
|
|
}
|
|
void WilsonFermion5D::DoubleStore(LatticeDoubledGaugeField &Uds,const LatticeGaugeField &Umu)
|
|
{
|
|
assert(GaugeGrid()->_ndimension==4);
|
|
conformable(Uds._grid,GaugeGrid());
|
|
conformable(Umu._grid,GaugeGrid());
|
|
LatticeColourMatrix U(GaugeGrid());
|
|
for(int mu=0;mu<Nd;mu++){
|
|
U = peekIndex<LorentzIndex>(Umu,mu);
|
|
pokeIndex<LorentzIndex>(Uds,U,mu);
|
|
U = adj(Cshift(U,mu,-1));
|
|
pokeIndex<LorentzIndex>(Uds,U,mu+4);
|
|
}
|
|
}
|
|
void WilsonFermion5D::DhopDir(const LatticeFermion &in, LatticeFermion &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;
|
|
|
|
WilsonCompressor compressor(DaggerNo);
|
|
Stencil.HaloExchange<vSpinColourVector,vHalfSpinColourVector,WilsonCompressor>(in,comm_buf,compressor);
|
|
|
|
int skip = (disp==1) ? 0 : 1;
|
|
|
|
int dirdisp = dir+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;
|
|
DiracOpt::DhopDir(Stencil,Umu,comm_buf,sF,sU,in,out,dirdisp);
|
|
}
|
|
}
|
|
};
|
|
|
|
void WilsonFermion5D::DhopInternal(CartesianStencil & st, LebesgueOrder &lo,
|
|
LatticeDoubledGaugeField & U,
|
|
const LatticeFermion &in, LatticeFermion &out,int dag)
|
|
{
|
|
assert((dag==DaggerNo) ||(dag==DaggerYes));
|
|
|
|
WilsonCompressor compressor(dag);
|
|
|
|
st.HaloExchange<vSpinColourVector,vHalfSpinColourVector,WilsonCompressor>(in,comm_buf,compressor);
|
|
|
|
// 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.
|
|
if ( dag == DaggerYes ) {
|
|
if( HandOptDslash ) {
|
|
PARALLEL_FOR_LOOP
|
|
for(int ss=0;ss<U._grid->oSites();ss++){
|
|
for(int s=0;s<Ls;s++){
|
|
//int sU=lo.Reorder(ss);
|
|
int sU=ss;
|
|
int sF = s+Ls*sU;
|
|
DiracOptHand::DhopSiteDag(st,U,comm_buf,sF,sU,in,out);
|
|
}
|
|
}
|
|
} else {
|
|
PARALLEL_FOR_LOOP
|
|
for(int ss=0;ss<U._grid->oSites();ss++){
|
|
for(int s=0;s<Ls;s++){
|
|
// int sU=lo.Reorder(ss);
|
|
int sU=ss;
|
|
int sF = s+Ls*sU;
|
|
DiracOpt::DhopSiteDag(st,U,comm_buf,sF,sU,in,out);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if( HandOptDslash ) {
|
|
PARALLEL_FOR_LOOP
|
|
for(int ss=0;ss<U._grid->oSites();ss++){
|
|
for(int s=0;s<Ls;s++){
|
|
// int sU=lo.Reorder(ss);
|
|
int sU=ss;
|
|
int sF = s+Ls*sU;
|
|
DiracOptHand::DhopSite(st,U,comm_buf,sF,sU,in,out);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
PARALLEL_FOR_LOOP
|
|
for(int ss=0;ss<U._grid->oSites();ss++){
|
|
for(int s=0;s<Ls;s++){
|
|
// int sU=lo.Reorder(ss);
|
|
int sU=ss;
|
|
int sF = s+Ls*sU;
|
|
DiracOpt::DhopSite(st,U,comm_buf,sF,sU,in,out);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
void WilsonFermion5D::DhopOE(const LatticeFermion &in, LatticeFermion &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);
|
|
}
|
|
void WilsonFermion5D::DhopEO(const LatticeFermion &in, LatticeFermion &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);
|
|
}
|
|
void WilsonFermion5D::Dhop(const LatticeFermion &in, LatticeFermion &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);
|
|
}
|
|
void WilsonFermion5D::DW(const LatticeFermion &in, LatticeFermion &out,int dag)
|
|
{
|
|
out.checkerboard=in.checkerboard;
|
|
Dhop(in,out,dag); // -0.5 is included
|
|
axpy(out,4.0-M5,in,out);
|
|
}
|
|
}}
|
|
|
|
|
|
|