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Merge branch 'develop' into feature/scidac-wp1

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This commit is contained in:
Peter Boyle
2024-03-06 14:55:21 -05:00
parent 070b61f08f 7e5bd46dd3
commit cc04dc42dc
103 changed files with 5678 additions and 589 deletions
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104
tests/debug/Test_padded_cell.cc
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@ -32,6 +32,7 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
using namespace std;
using namespace Grid;
// This is to optimize the SIMD
template<class vobj> void gpermute(vobj & inout,int perm){
vobj tmp=inout;
if (perm & 0x1 ) { permute(inout,tmp,0); tmp=inout;}
@ -39,7 +40,8 @@ template<class vobj> void gpermute(vobj & inout,int perm){
if (perm & 0x4 ) { permute(inout,tmp,2); tmp=inout;}
if (perm & 0x8 ) { permute(inout,tmp,3); tmp=inout;}
}
int main (int argc, char ** argv)
{
Grid_init(&argc,&argv);
@ -47,20 +49,21 @@ int main (int argc, char ** argv)
Coordinate latt_size = GridDefaultLatt();
Coordinate simd_layout= GridDefaultSimd(Nd,vComplexD::Nsimd());
Coordinate mpi_layout = GridDefaultMpi();
std::cout << " mpi "<<mpi_layout<<std::endl;
std::cout << " simd "<<simd_layout<<std::endl;
std::cout << " latt "<<latt_size<<std::endl;
std::cout << GridLogMessage << " mpi "<<mpi_layout<<std::endl;
std::cout << GridLogMessage << " simd "<<simd_layout<<std::endl;
std::cout << GridLogMessage << " latt "<<latt_size<<std::endl;
GridCartesian GRID(latt_size,simd_layout,mpi_layout);
// Initialize configuration as hot start.
GridParallelRNG pRNG(&GRID);
pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
LatticeGaugeField Umu(&GRID);
pRNG.SeedFixedIntegers(std::vector<int>({45,12,81,9}));
SU<Nc>::HotConfiguration(pRNG,Umu);
Real plaq=WilsonLoops<PeriodicGimplR>::avgPlaquette(Umu);
LatticeComplex trplaq(&GRID);
// Store Umu in U. Peek/Poke mean respectively getElement/setElement.
std::vector<LatticeColourMatrix> U(Nd, Umu.Grid());
for (int mu = 0; mu < Nd; mu++) {
U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
@ -70,9 +73,7 @@ int main (int argc, char ** argv)
LatticeComplex cplaq(&GRID); cplaq=Zero();
/////////////////////////////////////////////////
// Create a padded cell of extra padding depth=1
/////////////////////////////////////////////////
int depth = 1;
PaddedCell Ghost(depth,&GRID);
LatticeGaugeField Ughost = Ghost.Exchange(Umu);
@ -114,18 +115,25 @@ int main (int argc, char ** argv)
}
#endif
///// Array for the site plaquette
// Array for the site plaquette
GridBase *GhostGrid = Ughost.Grid();
LatticeComplex gplaq(GhostGrid);
// Now we're going to put together the "stencil" that will be useful to us when
// calculating the plaquette. Our eventual goal is to make the product
// Umu(x) Unu(x+mu) Umu^dag(x+nu) Unu^dag(x),
// which requires, in order, the sites x, x+mu, x+nu, and x. We arrive at these
// sites relative to x through "shifts", which is represented here by a 4-d
// vector of 0s (no movement) and 1s (shift one unit) at each site. The
// "stencil" is the set of all these shifts.
std::vector<Coordinate> shifts;
for(int mu=0;mu<Nd;mu++){
for(int nu=mu+1;nu<Nd;nu++){
// Umu(x) Unu(x+mu) Umu^dag(x+nu) Unu^dag(x)
Coordinate shift_0(Nd,0);
Coordinate shift_mu(Nd,0); shift_mu[mu]=1;
Coordinate shift_nu(Nd,0); shift_nu[nu]=1;
// push_back creates an element at the end of shifts and
// assigns the data in the argument to it.
shifts.push_back(shift_0);
shifts.push_back(shift_mu);
shifts.push_back(shift_nu);
@ -135,41 +143,51 @@ int main (int argc, char ** argv)
GeneralLocalStencil gStencil(GhostGrid,shifts);
gplaq=Zero();
{
autoView( gp_v , gplaq, CpuWrite);
autoView( t_v , trplaq, CpuRead);
autoView( U_v , Ughost, CpuRead);
for(int ss=0;ss<gp_v.size();ss++){
int s=0;
for(int mu=0;mu<Nd;mu++){
for(int nu=mu+1;nu<Nd;nu++){
auto SE0 = gStencil.GetEntry(s+0,ss);
auto SE1 = gStencil.GetEntry(s+1,ss);
auto SE2 = gStencil.GetEntry(s+2,ss);
auto SE3 = gStencil.GetEntry(s+3,ss);
int o0 = SE0->_offset;
int o1 = SE1->_offset;
int o2 = SE2->_offset;
int o3 = SE3->_offset;
auto U0 = U_v[o0](mu);
auto U1 = U_v[o1](nu);
auto U2 = adj(U_v[o2](mu));
auto U3 = adj(U_v[o3](nu));
// Before doing accelerator stuff, there is an opening and closing of "Views". I guess the
// "Views" are stored in *_v variables listed below.
autoView( gp_v , gplaq, CpuWrite);
autoView( t_v , trplaq, CpuRead);
autoView( U_v , Ughost, CpuRead);
gpermute(U0,SE0->_permute);
gpermute(U1,SE1->_permute);
gpermute(U2,SE2->_permute);
gpermute(U3,SE3->_permute);
gp_v[ss]() =gp_v[ss]() + trace( U0*U1*U2*U3 );
s=s+4;
}
}
// This is now a loop over stencil shift elements. That is, s increases as we make our
// way through the spacetimes sites, but also as we make our way around the plaquette.
for(int ss=0;ss<gp_v.size();ss++){
int s=0;
for(int mu=0;mu<Nd;mu++){
for(int nu=mu+1;nu<Nd;nu++){
auto SE0 = gStencil.GetEntry(s+0,ss);
auto SE1 = gStencil.GetEntry(s+1,ss);
auto SE2 = gStencil.GetEntry(s+2,ss);
auto SE3 = gStencil.GetEntry(s+3,ss);
// Due to our strategy, each offset corresponds to a site.
int o0 = SE0->_offset;
int o1 = SE1->_offset;
int o2 = SE2->_offset;
int o3 = SE3->_offset;
auto U0 = U_v[o0](mu);
auto U1 = U_v[o1](nu);
auto U2 = adj(U_v[o2](mu));
auto U3 = adj(U_v[o3](nu));
gpermute(U0,SE0->_permute);
gpermute(U1,SE1->_permute);
gpermute(U2,SE2->_permute);
gpermute(U3,SE3->_permute);
gp_v[ss]() =gp_v[ss]() + trace( U0*U1*U2*U3 );
s=s+4;
}
}
}
// Here is my understanding of this part: The padded cell has its own periodic BCs, so
// if I take a step to the right at the right-most side of the cell, I end up on the
// left-most side. This means that the plaquettes in the padding are wrong. Luckily
// all we care about are the plaquettes in the cell, which we obtain from Extract.
cplaq = Ghost.Extract(gplaq);
RealD vol = cplaq.Grid()->gSites();
RealD faces = (Nd * (Nd-1))/2;