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root/group/trunk/OOPSE_old/src/mdtools/libmdCode/LJ_FF.cpp
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Comparing trunk/OOPSE_old/src/mdtools/libmdCode/LJ_FF.cpp (file contents):
Revision 270 by mmeineke, Fri Feb 14 17:08:46 2003 UTC vs.
Revision 294 by mmeineke, Thu Mar 6 17:04:09 2003 UTC

# Line 5 | Line 5 | using namespace std;
5   #include <iostream>
6   using namespace std;
7  
8 + #ifdef IS_MPI
9 + #include <mpi.h>
10 + #include <mpi++.h>
11 + #endif //is_mpi
12 +
13   #include "ForceFields.hpp"
14   #include "SRI.hpp"
15   #include "simError.h"
16  
17 < // Declare the structures that will be passed by the parser and  MPI
17 > #include <fortranWrappers.hpp>
18  
14 – typedef struct{
15 –  char name[15];
16 –  double mass;
17 –  double epslon;
18 –  double sigma;
19 –  int ident;
20 –  int last;      //  0  -> default
21 –                 //  1  -> in MPI: tells nodes to stop listening
22 – } atomStruct;
23 –
24 – int parseAtomLJ( char *lineBuffer, int lineNum, atomStruct &info );
25 –
19   #ifdef IS_MPI
20   #include "mpiForceField.h"
21 + #endif // is_mpi
22  
29 – MPI_Datatype mpiAtomStructType;
23  
31 – #endif
24  
25 + namespace {
26  
27 < // declaration of functions needed to wrap the fortran module
27 >  // Declare the structures that will be passed by the parser and  MPI
28 >  
29 >  typedef struct{
30 >    char name[15];
31 >    double mass;
32 >    double epslon;
33 >    double sigma;
34 >    int ident;
35 >    int last;      //  0  -> default
36 >                   //  1  -> in MPI: tells nodes to stop listening
37 >  } atomStruct;
38  
39 < extern "C" {
40 <  void forcefactory_( char* forceName,
41 <                      int* status,
42 <                      void (*wrapFunction)( void (*p1)( int* ident,
43 <                                                        double* mass,
44 <                                                        double* epslon,
45 <                                                        double* sigma,
43 <                                                        int* status ),
44 <                                            void (*p2)( int *nLocal,
45 <                                                        int *identArray,
46 <                                                        int *isError ),
47 <                                            void (*p3)( double* positionArray,
48 <                                                        double* forceArray,
49 <                                                        double* potentialEnergy,
50 <                                                        short int* doPotentialCalc )),
51 <                      int forceNameLength );
39 >  int parseAtom( char *lineBuffer, int lineNum, atomStruct &info );
40 >  
41 > #ifdef IS_MPI
42 >  
43 >  MPI_Datatype mpiAtomStructType;
44 >  
45 > #endif
46   }
47  
48  
55 – void LJfunctionWrapper( void (*p1)( int* ident, double* mass, double* epslon,
56 –                                   double* sigma, int* status ),
57 –                        void (*p2)( int *nLocal, int *identArray, int *isError ),
58 –                        void (*p3)( double* positionArray,double* forceArray,
59 –                                    double* potentialEnergy,
60 –                                    short int* doPotentialCalc ) );
61 –
62 – void (*newLJtype)( int* ident, double* mass, double* epslon, double* sigma,
63 –                   int* status );
64 –
65 – void (*initLJfortran) ( int *nLocal, int *identArray, int *isError );
66 –
67 – LJ_FF* currentLJwrap;
68 –
69 –
49   //****************************************************************
50   // begins the actual forcefield stuff.  
51   //****************************************************************
# Line 81 | Line 60 | LJ_FF::LJ_FF(){
60    char errMsg[1000];
61  
62    // do the funtion wrapping
63 <  currentLJwrap = this;
85 <  wrapMe();
63 >  wrapMeFF( this );
64  
65   #ifdef IS_MPI
66    int i;
# Line 181 | Line 159 | void LJ_FF::wrapMe( void ){
159   }
160  
161  
184 – void LJ_FF::wrapMe( void ){
185 –  
186 –  char* currentFF = "LJ";
187 –  int isError = 0;
188 –  
189 –  forcefactory_( currentFF, &isError, LJfunctionWrapper, strlen(currentFF) );
162  
191 –  if( isError ){
192 –    
193 –    sprintf( painCave.errMsg,
194 –             "LJ_FF error: an error was returned from fortran when the "
195 –             "the functions were being wrapped.\n" );
196 –    painCave.isFatal = 1;
197 –    simError();
198 –  }
199 –
200 – #ifdef IS_MPI
201 –  sprintf( checkPointMsg, "LJ_FF functions succesfully wrapped." );
202 –  MPIcheckPoint();
203 – #endif // is_mpi
204 – }
205 –  
206 –
207 – void LJfunctionWrapper( void (*p1)( int* ident, double* mass, double* epslon,
208 –                                   double* sigma, int* status ),
209 –                        void (*p2)( int*, int*, int* ),
210 –                        void (*p3)( double* positionArray,double* forceArray,
211 –                                    double* potentialEnergy,
212 –                                    short int* doPotentialCalc ) ){
213 –  
214 –  
215 –  newLJtype = p1;
216 –  initLJfortran = p2;
217 –  currentLJwrap->setLJfortran( p3 );
218 – }
219 –
220 –
221 –
163   void LJ_FF::initializeAtoms( void ){
164    
165    class LinkedType {
# Line 519 | Line 460 | void LJ_FF::initializeTorsions( torsion_set* the_torsi
460   #endif // is_mpi
461  
462   }
463 +
464 + void LJ_FF::doForces( int calcPot ){
465 +
466 +  int i, isError;
467 +  double* frc;
468 +  double* pos;
469 +  double* tau;
470 +  short int passedCalcPot = (short int)calcPot;
471  
472 +  // forces are zeroed here, before any are acumulated.
473 +  // NOTE: do not rezero the forces in Fortran.
474  
475 +  for(i=0; i<entry_plug->n_atoms; i++){
476 +    entry_plug->atoms[i]->zeroForces();
477 +  }
478 +
479 +  frc = Atom::getFrcArray();
480 +  pos = Atom::getPosArray();
481 +  tau = entry_plug->tau;
482 +
483 +  isError = 0;
484 +  doLJfortran( pos, frc, &(entry_plug->lrPot), tau, &passedCalcPot, &isError );
485 +
486 +
487 +  if( isError ){
488 +    sprintf( painCave.errMsg,
489 +             "Error returned from the fortran force calculation.\n" );
490 +    painCave.isFatal = 1;
491 +    simError();
492 +  }
493 +
494 + #ifdef IS_MPI
495 +  sprintf( checkPointMsg,
496 +           "returned from the force calculation.\n" );
497 +  MPIcheckPoint();
498 + #endif // is_mpi
499 +
500 + }
501 +  
502 + void LJ_FF::initFortran( void ){
503 +  
504 +  int nLocal = entry_plug->n_atoms;
505 +  int *ident;
506 +  int isError;
507 +  int i;
508 +
509 +  ident = new int[nLocal];
510 +
511 +  for(i=0; i<nLocal; i++){
512 +    ident[i] = entry_plug->atoms[i]->getIdent();
513 +  }
514 +
515 +  isError = 0;
516 +  initLJfortran( &nLocal, ident, &isError );
517 +  
518 +  if(isError){
519 +    sprintf( painCave.errMsg,
520 +             "LJ_FF error: There was an error initializing the component list in fortran.\n" );
521 +    painCave.isFatal = 1;
522 +    simError();
523 +  }
524 +
525 +  
526 + #ifdef IS_MPI
527 +  sprintf( checkPointMsg, "LJ_FF successfully initialized the fortran component list.\n" );
528 +  MPIcheckPoint();
529 + #endif // is_mpi
530 +  
531 +  delete[] ident;
532 +
533 + }
534 +
535 +  
536   void LJ_FF::fastForward( char* stopText, char* searchOwner ){
537  
538    int foundText = 0;
# Line 577 | Line 589 | int parseAtomLJ( char *lineBuffer, int lineNum,  atomS
589  
590  
591  
592 < int parseAtomLJ( char *lineBuffer, int lineNum,  atomStruct &info ){
592 > int parseAtom( char *lineBuffer, int lineNum,  atomStruct &info ){
593  
594    char* the_token;
595    
# Line 617 | Line 629 | int parseAtomLJ( char *lineBuffer, int lineNum,  atomS
629    }
630    else return 0;
631   }
620 –
621 –
622 – void LJ_FF::doForces( int calcPot ){
623 –
624 –  int i;
625 –  double* frc;
626 –  double* pos;
627 –  short int passedCalcPot = (short int)calcPot;
628 –
629 –  // forces are zeroed here, before any are acumulated.
630 –  // NOTE: do not rezero the forces in Fortran.
631 –
632 –  for(i=0; i<entry_plug->n_atoms; i++){
633 –    entry_plug->atoms[i]->zeroForces();
634 –  }
635 –
636 –  frc = Atom::getFrcArray();
637 –  pos = Atom::getPosArray();
638 –
639 – //   entry_plug->lrPot = -1;
640 –  doLJfortran( pos, frc, &(entry_plug->lrPot), &passedCalcPot );
641 –
642 –
643 –  //   fprintf( stderr,
644 –  //   "lrPot =  %lf\n", entry_plug->lrPot );
645 –  
646 – }
647 –  
648 – void LJ_FF::initFortran( void ){
649 –  
650 –  int nLocal = entry_plug->n_atoms;
651 –  int *ident;
652 –  int isError;
653 –  int i;
654 –
655 –  ident = new int[nLocal];
656 –
657 –  for(i=0; i<nLocal; i++){
658 –    ident[i] = entry_plug->atoms[i]->getIdent();
659 –  }
660 –
661 –  isError = 0;
662 –  initLJfortran( &nLocal, ident, &isError );
663 –  
664 –  if(isError){
665 –    sprintf( painCave.errMsg,
666 –             "LJ_FF error: There was an error initializing the component list in fortran.\n" );
667 –    painCave.isFatal = 1;
668 –    simError();
669 –  }
670 –
671 –  
672 – #ifdef IS_MPI
673 –  sprintf( checkPointMsg, "LJ_FF successfully initialized the fortran component list.\n" );
674 –  MPIcheckPoint();
675 – #endif // is_mpi
676 –  
677 –  delete[] ident;
678 –
679 – }
680 –  

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