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Merge branch 'develop' of https://github.com/paboyle/Grid into develop

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This commit is contained in:
Peter Boyle
2019-05-22 09:57:02 +01:00
parent 44b53c3ba2 77ca45ff49
commit 918e673078
11 changed files with 190 additions and 57 deletions
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9
Grid/qcd/utils/A2Autils.h
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@ -986,17 +986,18 @@ void A2Autils<FImpl>::ContractWWVV(std::vector<PropagatorField> &WWVV,
for(int t=0;t<N_t;t++){
for(int s=0;s<N_s;s++){
auto tmp1 = vs[s]._odata[ss];
vobj tmp2 = zero;
vobj tmp2 = zero;
vobj tmp3 = zero;
for(int d=d_o;d<MIN(d_o+d_unroll,N_d);d++){
Scalar_v coeff = WW_sd(t,s,d);
mac(&tmp2 ,& coeff, & vd[d]._odata[ss]);
}
tmp3 = conjugate(vd[d]._odata[ss]);
mac(&tmp2, &coeff, &tmp3);
}
//////////////////////////
// Fast outer product of tmp1 with a sum of terms suppressed by d_unroll
//////////////////////////
tmp2 = conjugate(tmp2);
for(int s1=0;s1<Ns;s1++){
for(int s2=0;s2<Ns;s2++){
WWVV[t]._odata[ss]()(s1,s2)(0,0) += tmp1()(s1)(0)*tmp2()(s2)(0);

72
Grid/qcd/utils/GaugeFix.h
View File

@ -31,6 +31,7 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
namespace Grid {
namespace QCD {
template <class Gimpl>
class FourierAcceleratedGaugeFixer : public Gimpl {
public:
@ -45,18 +46,21 @@ class FourierAcceleratedGaugeFixer : public Gimpl {
A[mu] = Ta(U[mu]) * cmi;
}
}
static void DmuAmu(const std::vector<GaugeMat> &A,GaugeMat &dmuAmu) {
static void DmuAmu(const std::vector<GaugeMat> &A,GaugeMat &dmuAmu,int orthog) {
dmuAmu=zero;
for(int mu=0;mu<Nd;mu++){
dmuAmu = dmuAmu + A[mu] - Cshift(A[mu],mu,-1);
if ( mu != orthog ) {
dmuAmu = dmuAmu + A[mu] - Cshift(A[mu],mu,-1);
}
}
}
static void SteepestDescentGaugeFix(GaugeLorentz &Umu,Real & alpha,int maxiter,Real Omega_tol, Real Phi_tol,bool Fourier=false) {
static void SteepestDescentGaugeFix(GaugeLorentz &Umu,Real & alpha,int maxiter,Real Omega_tol, Real Phi_tol,bool Fourier=false,int orthog=-1) {
GridBase *grid = Umu._grid;
GaugeMat xform(grid);
SteepestDescentGaugeFix(Umu,xform,alpha,maxiter,Omega_tol,Phi_tol,Fourier);
SteepestDescentGaugeFix(Umu,xform,alpha,maxiter,Omega_tol,Phi_tol,Fourier,orthog);
}
static void SteepestDescentGaugeFix(GaugeLorentz &Umu,GaugeMat &xform,Real & alpha,int maxiter,Real Omega_tol, Real Phi_tol,bool Fourier=false) {
static void SteepestDescentGaugeFix(GaugeLorentz &Umu,GaugeMat &xform,Real & alpha,int maxiter,Real Omega_tol, Real Phi_tol,bool Fourier=false,int orthog=-1) {
GridBase *grid = Umu._grid;
@ -71,15 +75,29 @@ class FourierAcceleratedGaugeFixer : public Gimpl {
GaugeMat dmuAmu(grid);
{
Real plaq =WilsonLoops<Gimpl>::avgPlaquette(Umu);
Real link_trace=WilsonLoops<Gimpl>::linkTrace(Umu);
if( (orthog>=0) && (orthog<Nd) ){
std::cout << GridLogMessage << " Gauge fixing to Coulomb gauge time="<<orthog<< " plaq= "<<plaq<<" link trace = "<<link_trace<< std::endl;
} else {
std::cout << GridLogMessage << " Gauge fixing to Landau gauge plaq= "<<plaq<<" link trace = "<<link_trace<< std::endl;
}
}
for(int i=0;i<maxiter;i++){
for(int mu=0;mu<Nd;mu++) U[mu]= PeekIndex<LorentzIndex>(Umu,mu);
if ( Fourier==false ) {
trG = SteepestDescentStep(U,xform,alpha,dmuAmu);
trG = SteepestDescentStep(U,xform,alpha,dmuAmu,orthog);
} else {
trG = FourierAccelSteepestDescentStep(U,xform,alpha,dmuAmu);
trG = FourierAccelSteepestDescentStep(U,xform,alpha,dmuAmu,orthog);
}
// std::cout << GridLogMessage << "trG "<< trG<< std::endl;
// std::cout << GridLogMessage << "xform "<< norm2(xform)<< std::endl;
// std::cout << GridLogMessage << "dmuAmu "<< norm2(dmuAmu)<< std::endl;
for(int mu=0;mu<Nd;mu++) PokeIndex<LorentzIndex>(Umu,U[mu],mu);
// Monitor progress and convergence test
// infrequently to minimise cost overhead
@ -106,14 +124,14 @@ class FourierAcceleratedGaugeFixer : public Gimpl {
}
}
};
static Real SteepestDescentStep(std::vector<GaugeMat> &U,GaugeMat &xform,Real & alpha, GaugeMat & dmuAmu) {
static Real SteepestDescentStep(std::vector<GaugeMat> &U,GaugeMat &xform,Real & alpha, GaugeMat & dmuAmu,int orthog) {
GridBase *grid = U[0]._grid;
std::vector<GaugeMat> A(Nd,grid);
GaugeMat g(grid);
GaugeLinkToLieAlgebraField(U,A);
ExpiAlphaDmuAmu(A,g,alpha,dmuAmu);
ExpiAlphaDmuAmu(A,g,alpha,dmuAmu,orthog);
Real vol = grid->gSites();
@ -125,7 +143,7 @@ class FourierAcceleratedGaugeFixer : public Gimpl {
return trG;
}
static Real FourierAccelSteepestDescentStep(std::vector<GaugeMat> &U,GaugeMat &xform,Real & alpha, GaugeMat & dmuAmu) {
static Real FourierAccelSteepestDescentStep(std::vector<GaugeMat> &U,GaugeMat &xform,Real & alpha, GaugeMat & dmuAmu,int orthog) {
GridBase *grid = U[0]._grid;
@ -144,31 +162,41 @@ class FourierAcceleratedGaugeFixer : public Gimpl {
GaugeLinkToLieAlgebraField(U,A);
DmuAmu(A,dmuAmu);
DmuAmu(A,dmuAmu,orthog);
theFFT.FFT_all_dim(dmuAmu_p,dmuAmu,FFT::forward);
std::vector<int> mask(Nd,1);
for(int mu=0;mu<Nd;mu++) if (mu==orthog) mask[mu]=0;
theFFT.FFT_dim_mask(dmuAmu_p,dmuAmu,mask,FFT::forward);
//////////////////////////////////
// Work out Fp = psq_max/ psq...
// Avoid singularities in Fp
//////////////////////////////////
std::vector<int> latt_size = grid->GlobalDimensions();
std::vector<int> coor(grid->_ndimension,0);
for(int mu=0;mu<Nd;mu++) {
Real TwoPiL = M_PI * 2.0/ latt_size[mu];
LatticeCoordinate(pmu,mu);
pmu = TwoPiL * pmu ;
psq = psq + 4.0*sin(pmu*0.5)*sin(pmu*0.5);
if ( mu != orthog ) {
Real TwoPiL = M_PI * 2.0/ latt_size[mu];
LatticeCoordinate(pmu,mu);
pmu = TwoPiL * pmu ;
psq = psq + 4.0*sin(pmu*0.5)*sin(pmu*0.5);
}
}
Complex psqMax(16.0);
Fp = psqMax*one/psq;
pokeSite(TComplex(1.0),Fp,coor);
pokeSite(TComplex(16.0),Fp,coor);
if( (orthog>=0) && (orthog<Nd) ){
for(int t=0;t<grid->GlobalDimensions()[orthog];t++){
coor[orthog]=t;
pokeSite(TComplex(16.0),Fp,coor);
}
}
dmuAmu_p = dmuAmu_p * Fp;
theFFT.FFT_all_dim(dmuAmu,dmuAmu_p,FFT::backward);
theFFT.FFT_dim_mask(dmuAmu,dmuAmu_p,mask,FFT::backward);
GaugeMat ciadmam(grid);
Complex cialpha(0.0,-alpha);
@ -183,11 +211,11 @@ class FourierAcceleratedGaugeFixer : public Gimpl {
return trG;
}
static void ExpiAlphaDmuAmu(const std::vector<GaugeMat> &A,GaugeMat &g,Real & alpha, GaugeMat &dmuAmu) {
static void ExpiAlphaDmuAmu(const std::vector<GaugeMat> &A,GaugeMat &g,Real & alpha, GaugeMat &dmuAmu,int orthog) {
GridBase *grid = g._grid;
Complex cialpha(0.0,-alpha);
GaugeMat ciadmam(grid);
DmuAmu(A,dmuAmu);
DmuAmu(A,dmuAmu,orthog);
ciadmam = dmuAmu*cialpha;
SU<Nc>::taExp(ciadmam,g);
}