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include missing staple orientations; invert path direction, which was backwards

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This commit is contained in:
david clarke 2023-06-22 14:57:10 -06:00
parent d536c67b9d
commit df99f227c1
1 changed files with 95 additions and 90 deletions
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39
Grid/qcd/smearing/HISQSmearing.h
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@ -112,12 +112,13 @@ public:
// This is where the 3-link constructs will be stored
LGF Ughost_fat(Ughost.Grid());
// Create 3-link stencil (class will build its own stencils)
// writing your own stencil, you're hard-coding the periodic BCs, so you don't need
// the policy-based stuff, at least for now
// Create 3-link stencil. Writing your own stencil, you're hard-coding the
// periodic BCs, so you don't need the policy-based stuff, at least for now.
// Loop over all orientations, i.e. demand mu != nu.
std::vector<Coordinate> shifts;
for(int mu=0;mu<Nd;mu++){
for(int nu=mu+1;nu<Nd;nu++){
for(int mu=0;mu<Nd;mu++)
for(int nu=0;nu<Nd;nu++) {
if(mu==nu) continue;
// forward shifts
Coordinate shift_0(Nd,0);
Coordinate shift_mu(Nd,0); shift_mu[mu]=1;
@ -134,7 +135,7 @@ public:
shifts.push_back(shift_nu); // in principle you don't need both of these grid points,
shifts.push_back(shift_nu); // but it helps the reader keep track of offsets
}
}
GeneralLocalStencil gStencil(GhostGrid,shifts);
Ughost_fat=Zero();
@ -150,8 +151,9 @@ public:
// plaquette orientations, and as we travel around a plaquette.
int s=0;
for(int mu=0;mu<Nd;mu++){
for(int nu=mu+1;nu<Nd;nu++){
for(int mu=0;mu<Nd;mu++)
for(int nu=0;nu<Nd;nu++) {
if(mu==nu) continue;
// shift_mu; shift_mu[mu]=1
// shift_nu; shift_nu[nu]=1
@ -174,30 +176,33 @@ public:
int o4 = SE4->_offset;
int o5 = SE5->_offset;
auto U0 = U_v[o0](nu);
auto U1 = adj(U_v[o1](mu));
auto U2 = adj(U_v[o2](nu));
// When you're deciding whether to take an adjoint, the question is: how is the
// stored link oriented compared to the one you want? If I imagine myself travelling
// with the to-be-updated link, I have two possible, alternative 3-link paths I can
// take, one starting by going to the left, the other starting by going to the right.
auto U0 = adj(U_v[o0](nu));
auto U1 = U_v[o1](mu);
auto U2 = U_v[o2](nu);
gpermute(U0,SE0->_permute);
gpermute(U1,SE1->_permute);
gpermute(U2,SE2->_permute);
auto U3 = adj(U_v[o3](nu));
auto U4 = adj(U_v[o4](mu));
auto U5 = U_v[o5](nu);
auto U3 = U_v[o3](nu);
auto U4 = U_v[o4](mu);
auto U5 = adj(U_v[o5](nu));
gpermute(U3,SE3->_permute);
gpermute(U4,SE4->_permute);
gpermute(U5,SE5->_permute);
// forward backward
auto W = U0*U1*U2 + U3*U4*U5;
// "left" "right"
auto W = U2*U1*U0 + U5*U4*U3;
U_fat_v[ss](mu) = U_fat_v[ss](mu) + W;
s=s+6;
}
}
}
u_smr = lt.c_3*Ghost.Extract(Ughost_fat) + lt.c_1*u_thin;
};