| 53 |
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// base class of minimizer |
| 54 |
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|
| 55 |
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namespace OpenMD { |
| 56 |
+ |
|
| 57 |
+ |
/** minimizer stop codes */ |
| 58 |
+ |
enum{MIN_MAXITER, |
| 59 |
+ |
MIN_MAXEVAL, |
| 60 |
+ |
MIN_ETOL, |
| 61 |
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MIN_FTOL, |
| 62 |
+ |
MIN_DOWNHILL, |
| 63 |
+ |
MIN_ZEROALPHA, |
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MIN_ZEROFORCE, |
| 65 |
+ |
MIN_ZEROQUAD}; |
| 66 |
+ |
|
| 67 |
+ |
typedef int (*FnPtr)(std::vector<RealType> &, std::vector<RealType> &, RealType &); |
| 68 |
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|
| 57 |
– |
/** @todo need refactorying */ |
| 58 |
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const int MIN_LSERROR = -1; |
| 59 |
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const int MIN_MAXITER = 0; |
| 60 |
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const int MIN_CONVERGE = 1; |
| 61 |
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|
| 62 |
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const int CONVG_UNCONVG = 0; |
| 63 |
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const int CONVG_FTOL = 1; |
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const int CONVG_GTOL = 2; |
| 65 |
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const int CONVG_ABSGTOL = 3; |
| 66 |
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const int CONVG_STEPTOL = 4; |
| 67 |
– |
|
| 68 |
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const int LS_SUCCEED =1; |
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const int LS_ERROR = -1; |
| 70 |
– |
|
| 71 |
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/** @todo move to math module */ |
| 72 |
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RealType dotProduct(const std::vector<RealType>& v1, const std::vector<RealType>& v2); |
| 73 |
– |
|
| 69 |
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/** |
| 70 |
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* @class Minimizer |
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* base minimizer class |
| 72 |
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*/ |
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class Minimizer { |
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public: |
| 80 |
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|
| 75 |
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Minimizer(SimInfo *rhs); |
| 82 |
– |
|
| 76 |
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virtual ~Minimizer(); |
| 84 |
– |
|
| 85 |
– |
// |
| 77 |
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virtual void init() {} |
| 87 |
– |
|
| 78 |
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//driver function of minimization method |
| 79 |
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virtual void minimize(); |
| 90 |
– |
|
| 91 |
– |
// |
| 80 |
|
virtual int step() = 0; |
| 93 |
– |
|
| 94 |
– |
// |
| 81 |
|
virtual void prepareStep() {}; |
| 82 |
|
|
| 83 |
< |
//line search algorithm, for the time being, we use back track algorithm |
| 83 |
> |
//line search algorithm, for the time being, we use a back track |
| 84 |
> |
//algorithm |
| 85 |
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virtual int doLineSearch(std::vector<RealType>& direction, RealType stepSize); |
| 86 |
+ |
virtual int checkConvergence() = 0; |
| 87 |
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|
| 100 |
– |
virtual int checkConvg() = 0; |
| 101 |
– |
|
| 88 |
|
//save the result when minimization method is done |
| 89 |
|
virtual void saveResult(){} |
| 90 |
< |
|
| 90 |
> |
|
| 91 |
|
//get the status of minimization |
| 92 |
< |
int getMinStatus() {return minStatus;} |
| 92 |
> |
int getMinimizerStatus() {return minStatus;} |
| 93 |
|
|
| 94 |
|
// get the dimension of the model |
| 95 |
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int getDim() { return ndim; } |
| 97 |
|
//get the name of minimizer method |
| 98 |
|
std::string getMinimizerName() { return minimizerName; } |
| 99 |
|
|
| 100 |
< |
//return number of current Iteration |
| 101 |
< |
int getCurIter() { return curIter; } |
| 100 |
> |
//return number of the current Iteration |
| 101 |
> |
int getCurrentIteration() { return curIter; } |
| 102 |
|
|
| 103 |
|
// set the verbose mode of minimizer |
| 104 |
|
void setVerbose(bool verbose) { bVerbose = verbose;} |
| 105 |
|
|
| 106 |
< |
//get and set the coordinate |
| 106 |
> |
//get and set the coordinates |
| 107 |
|
std::vector<RealType> getX() { return curX; } |
| 108 |
|
void setX(std::vector<RealType>& x); |
| 109 |
|
|
| 118 |
|
std::vector<RealType> getGrad() { return curG; } |
| 119 |
|
void setGrad(std::vector<RealType>& g) { curG = g; } |
| 120 |
|
|
| 121 |
< |
//interal function to evaluate the energy and gradient in OpenMD |
| 136 |
< |
void calcEnergyGradient(std::vector<RealType>& x, std::vector<RealType>& grad, RealType& |
| 137 |
< |
energy, int& status); |
| 121 |
> |
void setGradientFunction(FnPtr efunc) { calcEnergyGradient = efunc; } |
| 122 |
|
|
| 123 |
|
//calculate the value of object function |
| 124 |
|
virtual void calcF(); |
| 136 |
|
|
| 137 |
|
protected: |
| 138 |
|
|
| 139 |
+ |
typedef int (*FnPtr)(std::vector<RealType> &, std::vector<RealType> &, RealType &); |
| 140 |
+ |
FnPtr calcEnergyGradient; |
| 141 |
+ |
|
| 142 |
|
// transfrom cartesian and rotational coordinates into minimization coordinates |
| 143 |
|
std::vector<RealType> getCoor(); |
| 144 |
|
|
| 145 |
|
// transfrom minimization coordinates into cartesian and rotational coordinates |
| 146 |
|
void setCoor(std::vector<RealType>& x); |
| 147 |
|
|
| 161 |
– |
|
| 162 |
– |
|
| 148 |
|
//constraint the bonds; |
| 149 |
|
int shakeR() { return 0;} |
| 150 |
|
|
| 151 |
|
//remove the force component along the bond direction |
| 152 |
|
int shakeF() { return 0;} |
| 168 |
– |
|
| 153 |
|
RealType calcPotential(); |
| 154 |
|
|
| 155 |
|
SimInfo* info; |
| 156 |
< |
|
| 173 |
< |
ForceManager* forceMan; |
| 174 |
< |
|
| 156 |
> |
ForceManager* forceMan; |
| 157 |
|
//parameter set of minimization method |
| 158 |
|
MinimizerParameterSet* paramSet; |
| 159 |
|
|
| 193 |
|
//SymMatrix curH; |
| 194 |
|
|
| 195 |
|
private: |
| 196 |
< |
|
| 215 |
< |
//calculate the dimension od the model for minimization |
| 196 |
> |
//calculate the dimension of the model for minimization |
| 197 |
|
void calcDim(); |
| 217 |
– |
|
| 198 |
|
}; |
| 199 |
|
|
| 200 |
|
} |
