mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-14 17:55:38 +00:00
82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
//--------------------------------------------------------------------
|
|
/*! @file Integrator_base.h
|
|
* @brief Declaration of classes for the abstract Molecular Dynamics integrator
|
|
*
|
|
* @author Guido Cossu
|
|
*/
|
|
//--------------------------------------------------------------------
|
|
|
|
#ifndef INTEGRATOR_INCLUDED
|
|
#define INTEGRATOR_INCLUDED
|
|
|
|
class Observer;
|
|
|
|
|
|
/*! @brief Abstract base class for Molecular Dynamics management */
|
|
|
|
namespace Grid{
|
|
namespace QCD{
|
|
|
|
typedef Action<LatticeLorentzColourMatrix>* ActPtr; // now force the same size as the rest of the code
|
|
typedef std::vector<ActPtr> ActionLevel;
|
|
typedef std::vector<ActionLevel> ActionSet;
|
|
typedef std::vector<Observer*> ObserverList;
|
|
|
|
|
|
class Integrator2MN{
|
|
const double lambda = 0.1931833275037836;
|
|
void step (LatticeColourMatrix&, LatticeColourMatrix&,
|
|
int, std::vector<int>&);
|
|
|
|
};
|
|
|
|
class IntegratorLeapFrog{
|
|
void step (LatticeColourMatrix&, LatticeColourMatrix&,
|
|
int, std::vector<int>&);
|
|
};
|
|
|
|
|
|
|
|
template< class IntegratorPolicy >
|
|
class Integrator{
|
|
private:
|
|
int Nexp;
|
|
int MDsteps; // number of outer steps
|
|
RealD trajL; // trajectory length
|
|
RealD stepsize;
|
|
|
|
const std::vector<int> Nrel; // relative steps per level
|
|
const ActionSet as;
|
|
ObserverList observers;
|
|
// LatticeColourMatrix* const U; // is shared among all actions - or use a singleton...
|
|
LatticeColourMatrix P;
|
|
|
|
IntegratorPolicy TheIntegrator;// contains parameters too
|
|
void update_P(int lv,double ep);
|
|
void update_U(double ep);
|
|
|
|
void register_observers();
|
|
void notify_observers();
|
|
void integrator_step(int level ,std::vector<Integer>& clock);
|
|
|
|
|
|
public:
|
|
Integrator(int Nexp_, int MDsteps_, RealD trajL_,
|
|
ActionSet& Aset, ObserverList obs):as(Aset), observers(obs){};
|
|
~Integrator(){}
|
|
void init(LatticeLorentzColourMatrix&,
|
|
GridParallelRNG&);
|
|
double S();
|
|
void integrate(int level);
|
|
LatticeColourMatrix get_U();
|
|
};
|
|
|
|
namespace MDutils{
|
|
void generate_momenta(LatticeLorentzColourMatrix&,GridParallelRNG&);
|
|
void generate_momenta_su3(LatticeLorentzColourMatrix&,GridParallelRNG&);
|
|
}
|
|
|
|
}
|
|
}
|
|
#endif//INTEGRATOR_INCLUDED
|