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Comparing trunk/OOPSE/libmdtools/Integrator.hpp (file contents):
Revision 555 by mmeineke, Tue Jun 17 21:56:15 2003 UTC vs.
Revision 755 by mmeineke, Tue Sep 9 20:35:25 2003 UTC

# Line 1 | Line 1
1   #ifndef _INTEGRATOR_H_
2   #define _INTEGRATOR_H_
3  
4 + #include <string>
5 + #include <vector>
6   #include "Atom.hpp"
7 + #include "Molecule.hpp"
8   #include "SRI.hpp"
9   #include "AbstractClasses.hpp"
10   #include "SimInfo.hpp"
11   #include "ForceFields.hpp"
12   #include "Thermo.hpp"
13   #include "ReadWrite.hpp"
14 + #include "ZConsWriter.hpp"
15  
16 < class Integrator : public BaseIntegrator {
16 > using namespace std;
17 > const double kB = 8.31451e-7;// boltzmann constant amu*Ang^2*fs^-2/K
18 > const double eConvert = 4.184e-4; // converts kcal/mol -> amu*A^2/fs^2
19 > const double p_convert = 1.63882576e8; //converts amu*fs^-2*Ang^-1 -> atm
20 > const int maxIteration = 300;
21 > const double tol = 1.0e-6;
22  
23 +
24 + template<typename T = BaseIntegrator> class Integrator : public T {
25 +
26   public:
27 <  Integrator( SimInfo &theInfo, ForceFields* the_ff );
27 >  Integrator( SimInfo *theInfo, ForceFields* the_ff );
28    virtual ~Integrator();
29    void integrate( void );
30  
31  
32   protected:
21
33    
34    virtual void integrateStep( int calcPot, int calcStress );
35    virtual void preMove( void );
# Line 26 | Line 37 | class Integrator : public BaseIntegrator { (protected)
37    virtual void moveB( void );
38    virtual void constrainA( void );
39    virtual void constrainB( void );
40 +  virtual int  readyCheck( void ) { return 1; }
41 +
42 +  virtual void resetIntegrator( void ) { }
43 +
44 +  virtual void calcForce( int calcPot, int calcStress );  
45 +  virtual void thermalize();
46    
30  
47    void checkConstraints( void );
48    void rotate( int axes1, int axes2, double angle, double j[3],
49 <               double A[3][3] );
50 <
35 <
49 >         double A[3][3] );
50 >        
51    ForceFields* myFF;
52  
53    SimInfo *info; // all the info we'll ever need
# Line 43 | Line 58 | class Integrator : public BaseIntegrator { (protected)
58    int nMols;
59  
60    int isConstrained; // boolean to know whether the systems contains
61 <                     // constraints.
61 >         // constraints.
62    int nConstrained;  // counter for number of constraints
63    int *constrainedA; // the i of a constraint pair
64    int *constrainedB; // the j of a constraint pair
# Line 51 | Line 66 | class Integrator : public BaseIntegrator { (protected)
66    
67    int* moving; // tells whether we are moving atom i
68    int* moved;  // tells whether we have moved atom i
69 <  double* prePos; // pre constrained positions
69 >  double* oldPos; // pre constrained positions
70  
71    short isFirst; /*boolean for the first time integrate is called */
72    
73    double dt;
74    double dt2;
60  const double eConvert = 4.184e-4; // converts kcal/mol -> amu*A^2/fs^2
75  
62  const int maxIteration = 300;
63  const double tol = 1.0e-6;
64
65  
66  double* pos;
67  double* vel;
68  double* frc;
69  double* trq;
70  double* Amat;
71  
72
73
76    Thermo *tStats;
77    StatWriter*  statOut;
78    DumpWriter*  dumpOut;
79    
80   };
81  
82 < class NVE : public Integrator{
82 > typedef Integrator<BaseIntegrator> RealIntegrator;
83  
84 <  NVE ( void ):
83 <    Integrator( theInfo, the_ff ){}
84 <  virtual ~NVE(){}
84 > template<typename T> class NVE : public T {
85  
86 + public:
87 +  NVE ( SimInfo *theInfo, ForceFields* the_ff ):
88 +    T( theInfo, the_ff ){}
89 +  virtual ~NVE(){}  
90 + };
91 +
92 +
93 + template<typename T> class NVT : public T {
94 +
95 + public:
96 +
97 +  NVT ( SimInfo *theInfo, ForceFields* the_ff);
98 +  virtual ~NVT() {}
99 +
100 +  void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;}
101 +  void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;}
102 +
103 + protected:
104 +
105 +  virtual void moveA( void );
106 +  virtual void moveB( void );
107 +
108 +  virtual int readyCheck();
109 +
110 +  virtual void resetIntegrator( void );
111 +
112 +  // chi is a propagated degree of freedom.
113 +
114 +  double chi;
115 +
116 +  // targetTemp must be set.  tauThermostat must also be set;
117 +
118 +  double targetTemp;
119 +  double tauThermostat;
120    
121 +  short int have_tau_thermostat, have_target_temp;
122  
123   };
124  
90 class NVT : public Integrator{
125  
92  NVT ( SimInfo &theInfo, ForceFields* the_ff ) :
93    Integrator( theInfo, the_ff );
94  virtual ~NVT();
126  
127 + template<typename T> class NPTi : public T{
128 +
129 + public:
130 +
131 +  NPTi ( SimInfo *theInfo, ForceFields* the_ff);
132 +  virtual ~NPTi() {};
133 +
134 +  virtual void integrateStep( int calcPot, int calcStress ){
135 +    calcStress = 1;
136 +    T::integrateStep( calcPot, calcStress );
137 +  }
138 +
139 +  void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;}
140 +  void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;}
141 +  void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;}
142 +  void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;}
143 +
144   protected:
145 <  virtual moveA( void );
146 <  virtual moveB( void );
145 >
146 >  virtual void  moveA( void );
147 >  virtual void moveB( void );
148 >
149 >  virtual int readyCheck();
150 >
151 >  virtual void resetIntegrator( void );
152 >
153 >  // chi and eta are the propagated degrees of freedom
154 >
155 >  double chi;
156 >  double eta;
157 >  double NkBT;
158 >
159 >  // targetTemp, targetPressure, and tauBarostat must be set.  
160 >  // One of qmass or tauThermostat must be set;
161 >
162 >  double targetTemp;
163 >  double targetPressure;
164 >  double tauThermostat;
165 >  double tauBarostat;
166 >
167 >  short int have_tau_thermostat, have_tau_barostat, have_target_temp;
168 >  short int have_target_pressure;
169 >
170 > };
171 >
172 > template<typename T> class NPTim : public T{
173 >
174 > public:
175 >
176 >  NPTim ( SimInfo *theInfo, ForceFields* the_ff);
177 >  virtual ~NPTim() {};
178 >
179 >  virtual void integrateStep( int calcPot, int calcStress ){
180 >    calcStress = 1;
181 >    T::integrateStep( calcPot, calcStress );
182 >  }
183 >
184 >  void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;}
185 >  void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;}
186 >  void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;}
187 >  void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;}
188 >
189 > protected:
190 >
191 >  virtual void moveA( void );
192 >  virtual void moveB( void );
193 >
194 >  virtual int readyCheck();
195 >
196 >  virtual void resetIntegrator( void );
197 >
198 >  Molecule* myMolecules;
199 >  Atom** myAtoms;
200 >
201 >  // chi and eta are the propagated degrees of freedom
202 >
203 >  double chi;
204 >  double eta;
205 >  double NkBT;
206 >
207 >  // targetTemp, targetPressure, and tauBarostat must be set.  
208 >  // One of qmass or tauThermostat must be set;
209 >
210 >  double targetTemp;
211 >  double targetPressure;
212 >  double tauThermostat;
213 >  double tauBarostat;
214 >
215 >  short int have_tau_thermostat, have_tau_barostat, have_target_temp;
216 >  short int have_target_pressure;
217 >
218 > };
219 >
220 > template<typename T> class NPTzm : public T{
221 >
222 > public:
223 >
224 >  NPTzm ( SimInfo *theInfo, ForceFields* the_ff);
225 >  virtual ~NPTzm() {};
226 >
227 >  virtual void integrateStep( int calcPot, int calcStress ){
228 >    calcStress = 1;
229 >    T::integrateStep( calcPot, calcStress );
230 >  }
231 >
232 >  void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;}
233 >  void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;}
234 >  void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;}
235 >  void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;}
236 >
237 > protected:
238 >
239 >  virtual void moveA( void );
240 >  virtual void moveB( void );
241 >
242 >  virtual int readyCheck();
243 >
244 >  virtual void resetIntegrator( void );
245 >
246 >  Molecule* myMolecules;
247 >  Atom** myAtoms;
248 >
249 >  // chi and eta are the propagated degrees of freedom
250 >
251 >  double chi;
252 >  double eta;
253 >  double etaZ;
254 >  double NkBT;
255 >
256 >  // targetTemp, targetPressure, and tauBarostat must be set.  
257 >  // One of qmass or tauThermostat must be set;
258 >
259 >  double targetTemp;
260 >  double targetPressure;
261 >  double tauThermostat;
262 >  double tauBarostat;
263 >
264 >  short int have_tau_thermostat, have_tau_barostat, have_target_temp;
265 >  short int have_target_pressure;
266 >
267 > };
268 >
269 > template<typename T> class NPTf : public T{
270 >
271 > public:
272 >
273 >  NPTf ( SimInfo *theInfo, ForceFields* the_ff);
274 >  virtual ~NPTf() {};
275 >
276 >  virtual void integrateStep( int calcPot, int calcStress ){
277 >    calcStress = 1;
278 >    T::integrateStep( calcPot, calcStress );
279 >  }
280 >
281 >  void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;}
282 >  void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;}
283 >  void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;}
284 >  void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;}
285 >
286 > protected:
287 >
288 >  virtual void  moveA( void );
289 >  virtual void moveB( void );
290 >
291 >  virtual void resetIntegrator( void );
292 >
293 >  virtual int readyCheck();
294 >
295 >  // chi and eta are the propagated degrees of freedom
296 >
297 >  double chi;
298 >  double eta[3][3];
299 >  double NkBT;
300 >
301 >  // targetTemp, targetPressure, and tauBarostat must be set.  
302 >  // One of qmass or tauThermostat must be set;
303 >
304 >  double targetTemp;
305 >  double targetPressure;
306 >  double tauThermostat;
307 >  double tauBarostat;
308 >
309 >  short int have_tau_thermostat, have_tau_barostat, have_target_temp;
310 >  short int have_target_pressure;
311  
312   };
313  
314 + template<typename T> class NPTxym : public T{
315 +
316 + public:
317 +
318 +  NPTxym ( SimInfo *theInfo, ForceFields* the_ff);
319 +  virtual ~NPTxym() {};
320 +
321 +  virtual void integrateStep( int calcPot, int calcStress ){
322 +    calcStress = 1;
323 +    T::integrateStep( calcPot, calcStress );
324 +  }
325 +
326 +  void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;}
327 +  void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;}
328 +  void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;}
329 +  void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;}
330 +
331 + protected:
332 +
333 +  virtual void moveA( void );
334 +  virtual void moveB( void );
335 +
336 +  virtual int readyCheck();
337 +
338 +  virtual void resetIntegrator( void );
339 +
340 +  Molecule* myMolecules;
341 +  Atom** myAtoms;
342 +
343 +  // chi and eta are the propagated degrees of freedom
344 +
345 +  double chi;
346 +  double eta;
347 +  double etaX;
348 +  double etaY;
349 +  double NkBT;
350 +
351 +  // targetTemp, targetPressure, and tauBarostat must be set.  
352 +  // One of qmass or tauThermostat must be set;
353 +
354 +  double targetTemp;
355 +  double targetPressure;
356 +  double tauThermostat;
357 +  double tauBarostat;
358 +
359 +  short int have_tau_thermostat, have_tau_barostat, have_target_temp;
360 +  short int have_target_pressure;
361 +
362 + };
363 +
364 +
365 + template<typename T> class NPTfm : public T{
366 +
367 + public:
368 +
369 +  NPTfm ( SimInfo *theInfo, ForceFields* the_ff);
370 +  virtual ~NPTfm() {};
371 +
372 +  virtual void integrateStep( int calcPot, int calcStress ){
373 +    calcStress = 1;
374 +    T::integrateStep( calcPot, calcStress );
375 +  }
376 +
377 +  void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;}
378 +  void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;}
379 +  void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;}
380 +  void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;}
381 +
382 + protected:
383 +
384 +  virtual void  moveA( void );
385 +  virtual void moveB( void );
386 +
387 +  virtual void resetIntegrator( void );
388 +
389 +  virtual int readyCheck();
390 +
391 +  Molecule* myMolecules;
392 +  Atom** myAtoms;
393 +
394 +  // chi and eta are the propagated degrees of freedom
395 +
396 +  double chi;
397 +  double eta[3][3];
398 +  double NkBT;
399 +
400 +  // targetTemp, targetPressure, and tauBarostat must be set.  
401 +  // One of qmass or tauThermostat must be set;
402 +
403 +  double targetTemp;
404 +  double targetPressure;
405 +  double tauThermostat;
406 +  double tauBarostat;
407 +
408 +  short int have_tau_thermostat, have_tau_barostat, have_target_temp;
409 +  short int have_target_pressure;
410 +
411 + };
412 +
413 +
414 + template<typename T> class NPTpr : public T{
415 +
416 + public:
417 +
418 +  NPTpr ( SimInfo *theInfo, ForceFields* the_ff);
419 +  virtual ~NPTpr() {};
420 +
421 +  virtual void integrateStep( int calcPot, int calcStress ){
422 +    calcStress = 1;
423 +    T::integrateStep( calcPot, calcStress );
424 +  }
425 +
426 +  void setTauThermostat(double tt) {tauThermostat = tt; have_tau_thermostat=1;}
427 +  void setTauBarostat(double tb) {tauBarostat = tb; have_tau_barostat=1;}
428 +  void setTargetTemp(double tt) {targetTemp = tt; have_target_temp = 1;}
429 +  void setTargetPressure(double tp) {targetPressure = tp; have_target_pressure = 1;}
430 +
431 + protected:
432 +
433 +  virtual void  moveA( void );
434 +  virtual void moveB( void );
435 +
436 +  virtual int readyCheck();
437 +
438 +  virtual void resetIntegrator( void );
439 +
440 +  // chi and eta are the propagated degrees of freedom
441 +
442 +  double chi;
443 +  double eta[3][3];
444 +  double NkBT;
445 +
446 +  // targetTemp, targetPressure, and tauBarostat must be set.  
447 +  // One of qmass or tauThermostat must be set;
448 +
449 +  double targetTemp;
450 +  double targetPressure;
451 +  double tauThermostat;
452 +  double tauBarostat;
453 +
454 +  short int have_tau_thermostat, have_tau_barostat, have_target_temp;
455 +  short int have_target_pressure;
456 +
457 + };
458 +
459 +
460 + template<typename T> class ZConstraint : public T {
461    
462 +  public:
463 +  class ForceSubtractionPolicy{
464 +    public:
465 +      ForceSubtractionPolicy(ZConstraint<T>* integrator) {zconsIntegrator = integrator;}
466  
467 +      virtual void update() = 0;    
468 +      virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) = 0;
469 +      virtual double getZFOfMovingMols(Atom* atom, double totalForce) = 0;
470 +      virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) = 0;
471 +      virtual double getHFOfUnconsMols(Atom* atom, double totalForce) = 0;
472 +    
473 +   protected:
474 +     ZConstraint<T>* zconsIntegrator;;
475 +  };
476  
477 +  class PolicyByNumber : public ForceSubtractionPolicy{
478 +
479 +    public:
480 +      PolicyByNumber(ZConstraint<T>* integrator) :ForceSubtractionPolicy(integrator) {}    
481 +      virtual void update();    
482 +      virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) ;
483 +      virtual double getZFOfMovingMols(Atom* atom, double totalForce) ;
484 +      virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce);
485 +      virtual double getHFOfUnconsMols(Atom* atom, double totalForce);
486 +    
487 +    private:
488 +    int totNumOfMovingAtoms;
489 +  };
490 +
491 +  class PolicyByMass : public ForceSubtractionPolicy{
492 +
493 +    public:
494 +      PolicyByMass(ZConstraint<T>* integrator) :ForceSubtractionPolicy(integrator) {}  
495 +      
496 +      virtual void update();    
497 +      virtual double getZFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce) ;
498 +      virtual double getZFOfMovingMols(Atom* atom, double totalForce) ;
499 +      virtual double getHFOfFixedZMols(Molecule* mol, Atom* atom, double totalForce);
500 +      virtual double getHFOfUnconsMols(Atom* atom, double totalForce);
501 +
502 +   private:
503 +     double totMassOfMovingAtoms;
504 +  };
505 +
506 + public:
507 +
508 +  ZConstraint( SimInfo *theInfo, ForceFields* the_ff);
509 +  ~ZConstraint();
510 +    
511 +  void setZConsTime(double time)                  {this->zconsTime = time;}
512 +  void getZConsTime()                             {return zconsTime;}
513 +  
514 +  void setIndexOfAllZConsMols(vector<int> index) {indexOfAllZConsMols = index;}
515 +  void getIndexOfAllZConsMols()                  {return indexOfAllZConsMols;}
516 +  
517 +  void setZConsOutput(const char * fileName)          {zconsOutput = fileName;}
518 +  string getZConsOutput()                         {return zconsOutput;}
519 +  
520 +  virtual void integrate();
521 +  
522 +
523 + #ifdef IS_MPI
524 +  virtual void update();                      //which is called to indicate the molecules' migration
525   #endif
526 +
527 + protected:
528 +
529 +  enum ZConsState {zcsMoving, zcsFixed};  
530 +
531 +  virtual void calcForce( int calcPot, int calcStress );
532 +  virtual void thermalize(void);
533 +  
534 +  void zeroOutVel();
535 +  void doZconstraintForce();
536 +  void doHarmonic();
537 +  bool checkZConsState();
538 +
539 +  bool haveFixedZMols();
540 +  bool haveMovingZMols();
541 +
542 +  double calcZSys();
543 +
544 +  int isZConstraintMol(Molecule* mol);
545 +
546 +
547 +  double zconsTime;                              //sample time
548 +  double zconsTol;                                 //tolerance of z-contratint
549 +  double zForceConst;                           //base force constant term
550 +                                                          //which is estimate by OOPSE
551 +  
552 +  vector<Molecule*> zconsMols;              //z-constraint molecules array
553 +  vector<double> massOfZConsMols;       //mass of z-constraint molecule
554 +  vector<double> kz;                              //force constant array
555 +  vector<ZConsState> states;                 //state of z-constraint molecules
556 +  vector<double> zPos;                          //
557 +  
558 +  
559 +  vector<Molecule*> unconsMols;           //unconstraint molecules array
560 +  vector<double> massOfUnconsMols;    //mass array of unconstraint molecules
561 +  double totalMassOfUncons;                //total mas of unconstraint molecules
562 +
563 +  vector<ZConsParaItem>* parameters; //
564 +  
565 +  vector<int> indexOfAllZConsMols;     //index of All Z-Constraint Molecuels
566 +
567 +  int* indexOfZConsMols;                   //index of local Z-Constraint Molecules  
568 +  double* fz;
569 +  double* curZPos;
570 +  
571 +  int totNumOfUnconsAtoms;              //total number of uncontraint atoms
572 +
573 +  int whichDirection;                           //constraint direction
574 +  
575 + private:
576 +  
577 +  string zconsOutput;                         //filename of zconstraint output
578 +  ZConsWriter* fzOut;                         //z-constraint writer
579 +
580 +  double curZconsTime;                      
581 +
582 +  double calcMovingMolsCOMVel();
583 +  double calcSysCOMVel();
584 +  double calcTotalForce();
585 +  
586 +  ForceSubtractionPolicy* forcePolicy; //force subtraction policy
587 +  friend class ForceSubtractionPolicy;
588 +
589 + };
590 +
591 + #endif

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