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Added support for anisotropy to the WilsonFermion class

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This commit is contained in:
Guido Cossu
2017-10-31 18:20:38 +00:00
parent 749189fd72
commit fa5e4add47
3 changed files with 76 additions and 15 deletions
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42
lib/qcd/action/fermion/WilsonFermion.cc
View File

@ -47,7 +47,8 @@ int WilsonFermionStatic::HandOptDslash;
template <class Impl>
WilsonFermion<Impl>::WilsonFermion(GaugeField &_Umu, GridCartesian &Fgrid,
GridRedBlackCartesian &Hgrid, RealD _mass,
const ImplParams &p)
const ImplParams &p,
const WilsonAnisotropyCoefficients &anis)
: Kernels(p),
_grid(&Fgrid),
_cbgrid(&Hgrid),
@ -60,16 +61,41 @@ WilsonFermion<Impl>::WilsonFermion(GaugeField &_Umu, GridCartesian &Fgrid,
Umu(&Fgrid),
UmuEven(&Hgrid),
UmuOdd(&Hgrid),
_tmp(&Hgrid)
_tmp(&Hgrid),
anisotropyCoeff(anis)
{
// Allocate the required comms buffer
ImportGauge(_Umu);
if (anisotropyCoeff.isAnisotropic){
diag_mass = mass + 1.0 + (Nd-1)*(anisotropyCoeff.nu / anisotropyCoeff.xi_0);
} else {
diag_mass = 4.0 + mass;
}
}
template <class Impl>
void WilsonFermion<Impl>::ImportGauge(const GaugeField &_Umu) {
GaugeField HUmu(_Umu._grid);
HUmu = _Umu * (-0.5);
//Here multiply the anisotropy coefficients
if (anisotropyCoeff.isAnisotropic)
{
for (int mu = 0; mu < Nd; mu++)
{
GaugeLinkField U_dir = (-0.5)*PeekIndex<LorentzIndex>(_Umu, mu);
if (mu != anisotropyCoeff.t_direction)
U_dir *= (anisotropyCoeff.nu / anisotropyCoeff.xi_0);
PokeIndex<LorentzIndex>(HUmu, U_dir, mu);
}
}
else
{
HUmu = _Umu * (-0.5);
}
Impl::DoubleStore(GaugeGrid(), Umu, HUmu);
pickCheckerboard(Even, UmuEven, Umu);
pickCheckerboard(Odd, UmuOdd, Umu);
@ -83,14 +109,14 @@ template <class Impl>
RealD WilsonFermion<Impl>::M(const FermionField &in, FermionField &out) {
out.checkerboard = in.checkerboard;
Dhop(in, out, DaggerNo);
return axpy_norm(out, 4 + mass, in, out);
return axpy_norm(out, diag_mass, in, out);
}
template <class Impl>
RealD WilsonFermion<Impl>::Mdag(const FermionField &in, FermionField &out) {
out.checkerboard = in.checkerboard;
Dhop(in, out, DaggerYes);
return axpy_norm(out, 4 + mass, in, out);
return axpy_norm(out, diag_mass, in, out);
}
template <class Impl>
@ -114,7 +140,7 @@ void WilsonFermion<Impl>::MeooeDag(const FermionField &in, FermionField &out) {
template <class Impl>
void WilsonFermion<Impl>::Mooee(const FermionField &in, FermionField &out) {
out.checkerboard = in.checkerboard;
typename FermionField::scalar_type scal(4.0 + mass);
typename FermionField::scalar_type scal(diag_mass);
out = scal * in;
}
@ -127,7 +153,7 @@ void WilsonFermion<Impl>::MooeeDag(const FermionField &in, FermionField &out) {
template<class Impl>
void WilsonFermion<Impl>::MooeeInv(const FermionField &in, FermionField &out) {
out.checkerboard = in.checkerboard;
out = (1.0/(4.0+mass))*in;
out = (1.0/(diag_mass))*in;
}
template<class Impl>
@ -204,7 +230,7 @@ void WilsonFermion<Impl>::DerivInternal(StencilImpl &st, DoubledGaugeField &U,
FermionField Btilde(B._grid);
FermionField Atilde(B._grid);
Atilde = A;
Atilde = A;//redundant
st.HaloExchange(B, compressor);

21
lib/qcd/action/fermion/WilsonFermion.h
View File

@ -44,6 +44,19 @@ class WilsonFermionStatic {
static const int npoint = 8;
};
struct WilsonAnisotropyCoefficients{
bool isAnisotropic;
int t_direction;
double xi_0;
double nu;
WilsonAnisotropyCoefficients():
isAnisotropic(false),
t_direction(Nd-1),
xi_0(1.0),
nu(1.0){}
};
template <class Impl>
class WilsonFermion : public WilsonKernels<Impl>, public WilsonFermionStatic {
public:
@ -117,8 +130,9 @@ class WilsonFermion : public WilsonKernels<Impl>, public WilsonFermionStatic {
// Constructor
WilsonFermion(GaugeField &_Umu, GridCartesian &Fgrid,
GridRedBlackCartesian &Hgrid, RealD _mass,
const ImplParams &p = ImplParams());
GridRedBlackCartesian &Hgrid, RealD _mass,
const ImplParams &p = ImplParams(),
const WilsonAnisotropyCoefficients &anis = WilsonAnisotropyCoefficients() );
// DoubleStore impl dependent
void ImportGauge(const GaugeField &_Umu);
@ -130,6 +144,7 @@ class WilsonFermion : public WilsonKernels<Impl>, public WilsonFermionStatic {
// protected:
public:
RealD mass;
RealD diag_mass;
GridBase *_grid;
GridBase *_cbgrid;
@ -146,6 +161,8 @@ class WilsonFermion : public WilsonKernels<Impl>, public WilsonFermionStatic {
LebesgueOrder Lebesgue;
LebesgueOrder LebesgueEvenOdd;
WilsonAnisotropyCoefficients anisotropyCoeff;
};
typedef WilsonFermion<WilsonImplF> WilsonFermionF;