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Naik to CShift

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This commit is contained in:
david clarke 2023-11-02 12:43:22 -06:00
parent 2ae2a81e85
commit c8b17c9526
1 changed files with 11 additions and 17 deletions
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28
Grid/qcd/smearing/HISQSmearing.h
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@ -129,7 +129,6 @@ public:
GF Ughost_3link(Ughost.Grid());
GF Ughost_5linkA(Ughost.Grid());
GF Ughost_5linkB(Ughost.Grid());
GF Ughost_naik(Ughost.Grid());
// mu-nu plane stencil. We allow mu==nu to make indexing the stencil easier,
// but these entries will not be used.
@ -149,7 +148,6 @@ public:
// This is where contributions from the smearing get added together
Ughost_fat=Zero();
Ughost_naik=Zero();
// This loop handles 3-, 5-, and 7-link constructs, minus Lepage and Naik.
for(int mu=0;mu<Nd;mu++) {
@ -160,7 +158,6 @@ public:
autoView(U_3link_v , Ughost_3link , CpuWrite);
autoView(U_5linkA_v, Ughost_5linkA, CpuWrite);
autoView(U_5linkB_v, Ughost_5linkB, CpuWrite);
autoView(U_naik_v , Ughost_naik , CpuWrite);
// TODO: This approach is slightly memory inefficient. It uses 25% extra memory
Ughost_3link =Zero();
@ -205,14 +202,6 @@ public:
// Save 3-link construct for later and add to smeared field.
U_3link_v[x](nu) = W;
U_fat_v[x](mu) = U_fat_v[x](mu) + lt.c_3*W;
// Naik term starts at x-mu, save at x-mu. The idea will be to keep track
// of this shift, and then take into account when we use Naik later.
U0 = coalescedReadGeneralPermute(U_v[x_m_mu](mu),SE5->_permute,Nd);
U1 = coalescedReadGeneralPermute(U_v[x ](mu),SE2->_permute,Nd);
U2 = coalescedReadGeneralPermute(U_v[x_p_mu](mu),SE0->_permute,Nd);
W = U0*U1*U2;
U_naik_v[x_m_mu](mu) = lt.c_naik*W;
}
}
@ -295,19 +284,24 @@ public:
// c1, c3, c5, c7 construct contributions
u_smr = Ghost.Extract(Ughost_fat) + lt.c_1*u_thin;
// Naik contribution
u_naik = Ghost.Extract(Ughost_naik);
// Load up U and V std::vectors to access thin and smeared links.
std::vector<LF> U(Nd, u_thin.Grid());
std::vector<LF> V(Nd, u_smr.Grid());
std::vector<LF> Vnaik(Nd, u_naik.Grid());
for (int mu = 0; mu < Nd; mu++) {
U[mu] = PeekIndex<LorentzIndex>(u_thin, mu);
V[mu] = PeekIndex<LorentzIndex>(u_smr, mu);
U[mu] = PeekIndex<LorentzIndex>(u_thin, mu);
V[mu] = PeekIndex<LorentzIndex>(u_smr, mu);
Vnaik[mu] = PeekIndex<LorentzIndex>(u_naik, mu);
}
// Compute LePage term from U_thin:
for(int mu=0;mu<Nd;mu++) {
// Naik
Vnaik[mu] = Vnaik[mu] + lt.c_naik*Gimpl::CovShiftForward(U[mu],mu,
Gimpl::CovShiftForward(U[mu],mu,
Gimpl::CovShiftIdentityForward(U[mu],mu)));
// LePage
for (int nu_h=1;nu_h<Nd;nu_h++) {
int nu=(mu+nu_h)%Nd;
// nu, nu, mu, Back(nu), Back(nu)