portelli/Grid
1
0
Fork 0
mirror of https://github.com/paboyle/Grid.git synced 2025-12-23 14:14:30 +00:00
Code Releases Activity

Merge branch 'develop' into feature/gpt

Browse Source
This commit is contained in:
Christoph Lehner
2020-05-06 15:03:35 +02:00
committed by GitHub
parent 87984ece7d 224cbf0453
commit 3c6ffcb48c
192 changed files with 3920 additions and 6302 deletions
Download Patch File Download Diff File Expand all files Collapse all files

126
Grid/qcd/action/fermion/implementation/WilsonKernelsImplementation.h
View File

@@ -493,131 +493,5 @@ void WilsonKernels<Impl>::DhopKernel(int Opt,StencilImpl &st, DoubledGaugeField
assert(0 && " Kernel optimisation case not covered ");
}
/*******************************************************************************
* Conserved current utilities for Wilson fermions, for contracting propagators
* to make a conserved current sink or inserting the conserved current
* sequentially. Common to both 4D and 5D.
******************************************************************************/
// N.B. Functions below assume a -1/2 factor within U.
#define WilsonCurrentFwd(expr, mu) ((expr - Gamma::gmu[mu]*expr))
#define WilsonCurrentBwd(expr, mu) ((expr + Gamma::gmu[mu]*expr))
/*******************************************************************************
* Name: ContractConservedCurrentSiteFwd
* Operation: (1/2) * q2[x] * U(x) * (g[mu] - 1) * q1[x + mu]
* Notes: - DoubledGaugeField U assumed to contain -1/2 factor.
* - Pass in q_in_1 shifted in +ve mu direction.
******************************************************************************/
template<class Impl>
void WilsonKernels<Impl>::ContractConservedCurrentSiteFwd(const SitePropagator &q_in_1,
const SitePropagator &q_in_2,
SitePropagator &q_out,
DoubledGaugeFieldView &U,
unsigned int sU,
unsigned int mu,
bool switch_sign)
{
SitePropagator result, tmp;
Gamma g5(Gamma::Algebra::Gamma5);
Impl::multLink(tmp, U[sU], q_in_1, mu);
result = g5 * adj(q_in_2) * g5 * WilsonCurrentFwd(tmp, mu);
if (switch_sign) {
q_out -= result;
} else {
q_out += result;
}
}
/*******************************************************************************
* Name: ContractConservedCurrentSiteBwd
* Operation: (1/2) * q2[x + mu] * U^dag(x) * (g[mu] + 1) * q1[x]
* Notes: - DoubledGaugeField U assumed to contain -1/2 factor.
* - Pass in q_in_2 shifted in +ve mu direction.
******************************************************************************/
template<class Impl>
void WilsonKernels<Impl>::ContractConservedCurrentSiteBwd(const SitePropagator &q_in_1,
const SitePropagator &q_in_2,
SitePropagator &q_out,
DoubledGaugeFieldView &U,
unsigned int sU,
unsigned int mu,
bool switch_sign)
{
SitePropagator result, tmp;
Gamma g5(Gamma::Algebra::Gamma5);
Impl::multLink(tmp, U[sU], q_in_1, mu + Nd);
result = g5 * adj(q_in_2) * g5 * WilsonCurrentBwd(tmp, mu);
if (switch_sign) {
q_out += result;
} else {
q_out -= result;
}
}
/*******************************************************************************
* Name: SeqConservedCurrentSiteFwd
* Operation: (1/2) * U(x) * (g[mu] - 1) * q[x + mu]
* Notes: - DoubledGaugeField U assumed to contain -1/2 factor.
* - Pass in q_in shifted in +ve mu direction.
******************************************************************************/
template<class Impl>
void WilsonKernels<Impl>::SeqConservedCurrentSiteFwd(const SitePropagator &q_in,
SitePropagator &q_out,
DoubledGaugeFieldView &U,
unsigned int sU,
unsigned int mu,
vPredicate t_mask,
bool switch_sign)
{
SitePropagator result;
Impl::multLink(result, U[sU], q_in, mu);
result = WilsonCurrentFwd(result, mu);
// Zero any unwanted timeslice entries.
result = predicatedWhere(t_mask, result, 0.*result);
if (switch_sign) {
q_out -= result;
} else {
q_out += result;
}
}
/*******************************************************************************
* Name: SeqConservedCurrentSiteFwd
* Operation: (1/2) * U^dag(x) * (g[mu] + 1) * q[x - mu]
* Notes: - DoubledGaugeField U assumed to contain -1/2 factor.
* - Pass in q_in shifted in -ve mu direction.
******************************************************************************/
template<class Impl>
void WilsonKernels<Impl>::SeqConservedCurrentSiteBwd(const SitePropagator &q_in,
SitePropagator &q_out,
DoubledGaugeFieldView &U,
unsigned int sU,
unsigned int mu,
vPredicate t_mask,
bool switch_sign)
{
SitePropagator result;
Impl::multLink(result, U[sU], q_in, mu + Nd);
result = WilsonCurrentBwd(result, mu);
// Zero any unwanted timeslice entries.
result = predicatedWhere(t_mask, result, 0.*result);
if (switch_sign) {
q_out += result;
} else {
q_out -= result;
}
}
NAMESPACE_END(Grid);