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Debugged smearing and adding HMC functions for hirep

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This commit is contained in:
Guido Cossu
2016-07-13 17:51:18 +01:00
parent a9ae30f868
commit 9dc345e8e8
12 changed files with 150 additions and 38 deletions
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48
lib/qcd/hmc/integrators/Integrator.h
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@ -64,7 +64,7 @@ struct IntegratorParameters {
};
/*! @brief Class for Molecular Dynamics management */
template <class GaugeField, class SmearingPolicy>
template <class GaugeField, class SmearingPolicy ,class RepresentationPolicy >
class Integrator {
protected:
typedef IntegratorParameters ParameterType;
@ -81,6 +81,8 @@ class Integrator {
SmearingPolicy& Smearer;
RepresentationPolicy Representations;
// Should match any legal (SU(n)) gauge field
// Need to use this template to match Ncol to pass to SU<N> class
template <int Ncol, class vec>
@ -108,8 +110,28 @@ class Integrator {
<< " dt " << ep << " : t_P " << t_P[level] << std::endl;
}
// to be used by the actionlevel class to iterate
// over the representations
template <class Level>
void update_P_core(Level repr_level, GaugeField& Mom, GaugeField& U,
double ep) {
typedef typename Level::LatticeField FieldType;
FieldType Ur = repr_level->getRepresentation();// update U is better
for (int a = 0; a < repr_level.size(); ++a) {
FieldType forceR(U._grid);
// Implement smearing only for the fundamental representation now
repr_level.at(a)->deriv(Ur, forceR);
GaugeField force = repr_level.at(a)->RtoFundamentalProject(forceR);
std::cout << GridLogIntegrator
<< "Hirep Force average: " << norm2(force) / (U._grid->gSites())
<< std::endl;
Mom -= force * ep;
}
}
// Add the specialized class for the fundamental case
void update_P(GaugeField& Mom, GaugeField& U, int level, double ep) {
// input U actually not used...
// input U actually not used in the fundamental case
for (int a = 0; a < as[level].actions.size(); ++a) {
GaugeField force(U._grid);
GaugeField& Us = Smearer.get_U(as[level].actions.at(a)->is_smeared);
@ -125,6 +147,8 @@ class Integrator {
<< std::endl;
Mom -= force * ep;
}
// Add here the other representations
// as[level].apply(update_P_hireps, Args...)
}
void update_U(GaugeField& U, double ep) {
@ -147,6 +171,8 @@ class Integrator {
}
// Update the smeared fields, can be implemented as observer
Smearer.set_GaugeField(U);
// Update the higher representations fields
//Representations.update(U);// void functions if fundamental representation
}
virtual void step(GaugeField& U, int level, int first, int last) = 0;
@ -154,7 +180,7 @@ class Integrator {
public:
Integrator(GridBase* grid, IntegratorParameters Par,
ActionSet<GaugeField>& Aset, SmearingPolicy& Sm)
: Params(Par), as(Aset), P(grid), levels(Aset.size()), Smearer(Sm) {
: Params(Par), as(Aset), P(grid), levels(Aset.size()), Smearer(Sm), Representations(grid) {
t_P.resize(levels, 0.0);
t_U = 0.0;
// initialization of smearer delegated outside of Integrator
@ -166,8 +192,16 @@ class Integrator {
void refresh(GaugeField& U, GridParallelRNG& pRNG) {
std::cout << GridLogIntegrator << "Integrator refresh\n";
generate_momenta(P, pRNG);
// Update the smeared fields, can be implemented as observer
// necessary to keep the fields updated even after a reject
// of the Metropolis
Smearer.set_GaugeField(U);
// Set the (eventual) representations gauge fields
// Representations.update(U);
// The Smearer is attached to a pointer of the gauge field
// automatically gets the updated field
// automatically gets the correct field
// whether or not has been accepted in the previous sweep
for (int level = 0; level < as.size(); ++level) {
for (int actionID = 0; actionID < as[level].actions.size(); ++actionID) {
@ -178,6 +212,9 @@ class Integrator {
as[level].actions.at(actionID)->refresh(Us, pRNG);
}
}
}
// Calculate action
@ -220,7 +257,8 @@ class Integrator {
t_P[level] = 0;
}
for (int step = 0; step < Params.MDsteps; ++step) { // MD step
for (int step = 0; step < Params.MDsteps; ++step) { // MD step
int first_step = (step == 0);
int last_step = (step == Params.MDsteps - 1);
this->step(U, 0, first_step, last_step);