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Anisotropic Clover term written and tested

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This commit is contained in:
Guido Cossu
2017-11-01 12:50:54 +00:00
parent fa5e4add47
commit 8e057721a9
9 changed files with 637 additions and 374 deletions
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102
lib/qcd/action/fermion/WilsonCloverFermion.cc
View File

@@ -84,14 +84,14 @@ void WilsonCloverFermion<Impl>::ImportGauge(const GaugeField &_Umu)
WilsonLoops<Impl>::FieldStrength(Ez, _Umu, Tdir, Zdir);
// Compute the Clover Operator acting on Colour and Spin
CloverTerm = fillCloverYZ(Bx);
CloverTerm += fillCloverXZ(By);
CloverTerm += fillCloverXY(Bz);
CloverTerm += fillCloverXT(Ex);
CloverTerm += fillCloverYT(Ey);
CloverTerm += fillCloverZT(Ez);
CloverTerm *= (0.5) * csw;
CloverTerm += (4.0 + this->mass);
// multiply here by the clover coefficients for the anisotropy
CloverTerm = fillCloverYZ(Bx) * csw_r;
CloverTerm += fillCloverXZ(By) * csw_r;
CloverTerm += fillCloverXY(Bz) * csw_r;
CloverTerm += fillCloverXT(Ex) * csw_t;
CloverTerm += fillCloverYT(Ey) * csw_t;
CloverTerm += fillCloverZT(Ez) * csw_t;
CloverTerm += diag_mass;
int lvol = _Umu._grid->lSites();
int DimRep = Impl::Dimension;
@@ -145,7 +145,6 @@ void WilsonCloverFermion<Impl>::ImportGauge(const GaugeField &_Umu)
template <class Impl>
void WilsonCloverFermion<Impl>::Mooee(const FermionField &in, FermionField &out)
{
conformable(in, out);
this->MooeeInternal(in, out, DaggerNo, InverseNo);
}
@@ -158,14 +157,12 @@ void WilsonCloverFermion<Impl>::MooeeDag(const FermionField &in, FermionField &o
template <class Impl>
void WilsonCloverFermion<Impl>::MooeeInv(const FermionField &in, FermionField &out)
{
conformable(in,out);
this->MooeeInternal(in, out, DaggerNo, InverseYes);
}
template <class Impl>
void WilsonCloverFermion<Impl>::MooeeInvDag(const FermionField &in, FermionField &out)
{
conformable(in,out);
this->MooeeInternal(in, out, DaggerYes, InverseYes);
}
@@ -228,88 +225,7 @@ void WilsonCloverFermion<Impl>::MooeeInternal(const FermionField &in, FermionFie
template <class Impl>
void WilsonCloverFermion<Impl>::MooDeriv(GaugeField &mat, const FermionField &X, const FermionField &Y, int dag)
{
GridBase *grid = mat._grid;
//GaugeLinkField Lambdaodd(grid), Lambdaeven(grid), tmp(grid);
//Lambdaodd = zero; //Yodd*dag(Xodd)+Xodd*dag(Yodd); // I have to peek spin and decide the color structure
//Lambdaeven = zero; //Teven*dag(Xeven)+Xeven*dag(Yeven) + 2*(Dee^-1)
GaugeLinkField Lambda(grid), tmp(grid);
Lambda = zero;
conformable(mat._grid, X._grid);
conformable(Y._grid, X._grid);
std::vector<GaugeLinkField> C1p(Nd, grid), C2p(Nd, grid), C3p(Nd, grid), C4p(Nd, grid);
std::vector<GaugeLinkField> C1m(Nd, grid), C2m(Nd, grid), C3m(Nd, grid), C4m(Nd, grid);
std::vector<GaugeLinkField> U(Nd, mat._grid);
for (int mu = 0; mu < Nd; mu++)
{
U[mu] = PeekIndex<LorentzIndex>(mat, mu);
C1p[mu] = zero;
C2p[mu] = zero;
C3p[mu] = zero;
C4p[mu] = zero;
C1m[mu] = zero;
C2m[mu] = zero;
C3m[mu] = zero;
C4m[mu] = zero;
}
/*
PARALLEL_FOR_LOOP
for (int i = 0; i < CloverTerm._grid->oSites(); i++)
{
T._odata[i]()(0, 1) = timesMinusI(F._odata[i]()());
T._odata[i]()(1, 0) = timesMinusI(F._odata[i]()());
T._odata[i]()(2, 3) = timesMinusI(F._odata[i]()());
T._odata[i]()(3, 2) = timesMinusI(F._odata[i]()());
}
*/
for (int i = 0; i < 4; i++)
{ //spin
for (int j = 0; j < 4; j++)
{ //spin
for (int mu = 0; mu < 4; mu++)
{ //color
for (int nu = 0; nu < 4; nu++)
{ //color
// insertion in upper staple
tmp = Lambda * U[nu];
C1p[mu] += Impl::ShiftStaple(Impl::CovShiftForward(tmp, nu, Impl::CovShiftBackward(U[mu], mu, Impl::CovShiftIdentityBackward(U[nu], nu))), mu);
tmp = Lambda * U[mu];
C2p[mu] += Impl::ShiftStaple(Impl::CovShiftForward(U[nu], nu, Impl::CovShiftBackward(tmp, mu, Impl::CovShiftIdentityBackward(U[nu], nu))), mu);
tmp = Impl::CovShiftIdentityForward(Lambda, nu) * U[nu];
C3p[mu] += Impl::ShiftStaple(Impl::CovShiftForward(U[nu], nu, Impl::CovShiftBackward(U[mu], mu, Impl::CovShiftIdentityBackward(tmp, nu))), mu);
tmp = Lambda;
C4p[mu] += Impl::ShiftStaple(Impl::CovShiftForward(U[nu], nu, Impl::CovShiftBackward(U[mu], mu, Impl::CovShiftIdentityBackward(U[nu], nu))), mu) * tmp;
// insertion in lower staple
tmp = Lambda * U[nu];
C1m[mu] += Impl::ShiftStaple(Impl::CovShiftBackward(tmp, nu, Impl::CovShiftBackward(U[mu], mu, U[nu])), mu);
tmp = Lambda * U[mu];
C2m[mu] += Impl::ShiftStaple(Impl::CovShiftBackward(U[nu], nu, Impl::CovShiftBackward(tmp, mu, U[nu])), mu);
tmp = Lambda * U[nu];
C3m[mu] += Impl::ShiftStaple(Impl::CovShiftBackward(U[nu], nu, Impl::CovShiftBackward(U[mu], mu, tmp)), mu);
tmp = Lambda;
C4m[mu] += Impl::ShiftStaple(Impl::CovShiftBackward(U[nu], nu, Impl::CovShiftBackward(U[mu], mu, U[nu])), mu) * tmp;
}
}
}
}
//Still implementing. Have to be tested, and understood how to project EO
assert(0);
}
// Derivative parts

116
lib/qcd/action/fermion/WilsonCloverFermion.h
View File

@@ -6,8 +6,8 @@
Copyright (C) 2017
Author: paboyle <paboyle@ph.ed.ac.uk>
Author: Guido Cossu <guido.cossu@ed.ac.uk>
Author: David Preti <>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -37,6 +37,22 @@ namespace Grid
namespace QCD
{
///////////////////////////////////////////////////////////////////
// Wilson Clover
//
// Operator ( with anisotropy coefficients):
//
// Q = 1 + (Nd-1)/xi_0 + m
// + W_t + (nu/xi_0) * W_s
// - 1/2*[ csw_t * sum_s (sigma_ts F_ts) + (csw_s/xi_0) * sum_ss (sigma_ss F_ss) ]
//
// s spatial, t temporal directions.
// where W_t and W_s are the temporal and spatial components of the
// Wilson Dirac operator
//
// csw_r = csw_t to recover the isotropic version
//////////////////////////////////////////////////////////////////
template <class Impl>
class WilsonCloverFermion : public WilsonFermion<Impl>
{
@@ -55,28 +71,43 @@ public:
// Constructors
WilsonCloverFermion(GaugeField &_Umu, GridCartesian &Fgrid,
GridRedBlackCartesian &Hgrid,
RealD _mass,
RealD _csw,
const ImplParams &p = ImplParams()) : WilsonFermion<Impl>(_Umu,
Fgrid,
Hgrid,
_mass, p),
CloverTerm(&Fgrid),
CloverTermInv(&Fgrid),
CloverTermEven(&Hgrid),
CloverTermOdd(&Hgrid),
CloverTermInvEven(&Hgrid),
CloverTermInvOdd(&Hgrid),
CloverTermDagEven(&Hgrid),
CloverTermDagOdd(&Hgrid),
CloverTermInvDagEven(&Hgrid),
CloverTermInvDagOdd(&Hgrid)
const RealD _mass,
const RealD _csw_r = 0.0,
const RealD _csw_t = 0.0,
const WilsonAnisotropyCoefficients &clover_anisotropy = WilsonAnisotropyCoefficients(),
const ImplParams &impl_p = ImplParams()) : WilsonFermion<Impl>(_Umu,
Fgrid,
Hgrid,
_mass, impl_p, clover_anisotropy),
CloverTerm(&Fgrid),
CloverTermInv(&Fgrid),
CloverTermEven(&Hgrid),
CloverTermOdd(&Hgrid),
CloverTermInvEven(&Hgrid),
CloverTermInvOdd(&Hgrid),
CloverTermDagEven(&Hgrid),
CloverTermDagOdd(&Hgrid),
CloverTermInvDagEven(&Hgrid),
CloverTermInvDagOdd(&Hgrid)
{
csw = _csw;
assert(Nd == 4); // require 4 dimensions
if (csw == 0)
std::cout << GridLogWarning << "Initializing WilsonCloverFermion with csw = 0" << std::endl;
if (clover_anisotropy.isAnisotropic)
{
csw_r = _csw_r * 0.5 / clover_anisotropy.xi_0;
diag_mass = _mass + 1.0 + (Nd - 1) * (clover_anisotropy.nu / clover_anisotropy.xi_0);
}
else
{
csw_r = _csw_r * 0.5;
diag_mass = 4.0 + _mass;
}
csw_t = _csw_t * 0.5;
if (csw_r == 0)
std::cout << GridLogWarning << "Initializing WilsonCloverFermion with csw_r = 0" << std::endl;
if (csw_t == 0)
std::cout << GridLogWarning << "Initializing WilsonCloverFermion with csw_t = 0" << std::endl;
ImportGauge(_Umu);
}
@@ -105,15 +136,15 @@ public:
GaugeField clover_force(force._grid);
PropagatorField Lambda(force._grid);
// Here we are hitting some performance issues:
// Guido: Here we are hitting some performance issues:
// need to extract the components of the DoubledGaugeField
// for each call
// Possible solution
// Create a vector object to store them? (cons: wasting space)
std::vector<GaugeLinkField> U(Nd, this->Umu._grid);
Impl::extractLinkField(U, this->Umu);
force = zero;
// Derivative of the Wilson hopping term
this->DhopDeriv(force, X, Y, dag);
@@ -121,10 +152,9 @@ public:
///////////////////////////////////////////////////////////
// Clover term derivative
///////////////////////////////////////////////////////////
Impl::outerProductImpl(Lambda, X, Y);
Impl::outerProductImpl(Lambda, X, Y);
//std::cout << "Lambda:" << Lambda << std::endl;
Gamma::Algebra sigma[] = {
Gamma::Algebra::SigmaXY,
Gamma::Algebra::SigmaXZ,
@@ -148,25 +178,34 @@ public:
*/
int count = 0;
clover_force = zero;
clover_force = zero;
for (int mu = 0; mu < 4; mu++)
{
force_mu = zero;
for (int nu = 0; nu < 4; nu++)
{
if (mu == nu) continue;
if (mu == nu)
continue;
RealD factor;
if (nu == 4 || mu == 4)
{
factor = 2.0 * csw_t;
}
else
{
factor = 2.0 * csw_r;
}
PropagatorField Slambda = Gamma(sigma[count]) * Lambda; // sigma checked
Impl::TraceSpinImpl(lambda, Slambda); // traceSpin ok
force_mu -= Cmunu(U, lambda, mu, nu); // checked
Impl::TraceSpinImpl(lambda, Slambda); // traceSpin ok
force_mu -= factor*Cmunu(U, lambda, mu, nu); // checked
count++;
}
pokeLorentz(clover_force, U[mu] * force_mu, mu);
}
clover_force *= csw;
//clover_force *= csw;
force += clover_force;
}
// Computing C_{\mu \nu}(x) as in Eq.(B.39) in Zbigniew Sroczynski's PhD thesis
@@ -176,15 +215,15 @@ public:
GaugeLinkField out(lambda._grid), tmp(lambda._grid);
// insertion in upper staple
// please check redundancy of shift operations
// C1+
tmp = lambda * U[nu];
out = Impl::ShiftStaple(Impl::CovShiftForward(tmp, nu, Impl::CovShiftBackward(U[mu], mu, Impl::CovShiftIdentityBackward(U[nu], nu))), mu);
// C2+
tmp = U[mu] * Impl::ShiftStaple(adj(lambda), mu);
out += Impl::ShiftStaple(Impl::CovShiftForward(U[nu], nu, Impl::CovShiftBackward(tmp, mu, Impl::CovShiftIdentityBackward(U[nu], nu))), mu);
// C3+
tmp = U[nu] * Impl::ShiftStaple(adj(lambda), nu);
out += Impl::ShiftStaple(Impl::CovShiftForward(U[nu], nu, Impl::CovShiftBackward(U[mu], mu, Impl::CovShiftIdentityBackward(tmp, nu))), mu);
@@ -213,16 +252,17 @@ public:
private:
// here fixing the 4 dimensions, make it more general?
RealD csw; // Clover coefficient
RealD csw_r; // Clover coefficient - spatial
RealD csw_t; // Clover coefficient - temporal
RealD diag_mass; // Mass term
CloverFieldType CloverTerm, CloverTermInv; // Clover term
CloverFieldType CloverTermEven, CloverTermOdd; // Clover term EO
CloverFieldType CloverTermInvEven, CloverTermInvOdd; // Clover term Inv EO
CloverFieldType CloverTermDagEven, CloverTermDagOdd; // Clover term Dag EO
CloverFieldType CloverTermInvDagEven, CloverTermInvDagOdd; // Clover term Inv Dag EO
// eventually these two can be compressed into 6x6 blocks instead of the 12x12
// eventually these can be compressed into 6x6 blocks instead of the 12x12
// using the DeGrand-Rossi basis for the gamma matrices
CloverFieldType fillCloverYZ(const GaugeLinkField &F)
{
CloverFieldType T(F._grid);

9
lib/qcd/action/fermion/WilsonFermion.h
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@@ -45,10 +45,11 @@ class WilsonFermionStatic {
};
struct WilsonAnisotropyCoefficients{
bool isAnisotropic;
int t_direction;
double xi_0;
double nu;
GRID_SERIALIZABLE_CLASS_MEMBERS(WilsonAnisotropyCoefficients,
bool, isAnisotropic,
int, t_direction,
double, xi_0,
double, nu);
WilsonAnisotropyCoefficients():
isAnisotropic(false),