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Comparing trunk/OOPSE-2.0/src/UseTheForce/doForces.F90 (file contents):
Revision 2129 by chrisfen, Mon Mar 21 20:51:10 2005 UTC vs.
Revision 2211 by chrisfen, Thu Apr 21 14:12:19 2005 UTC

# Line 45 | Line 45
45  
46   !! @author Charles F. Vardeman II
47   !! @author Matthew Meineke
48 < !! @version $Id: doForces.F90,v 1.12 2005-03-21 20:51:06 chrisfen Exp $, $Date: 2005-03-21 20:51:06 $, $Name: not supported by cvs2svn $, $Revision: 1.12 $
48 > !! @version $Id: doForces.F90,v 1.14 2005-04-21 14:12:19 chrisfen Exp $, $Date: 2005-04-21 14:12:19 $, $Name: not supported by cvs2svn $, $Revision: 1.14 $
49  
50  
51   module doForces
# Line 82 | Line 82 | module doForces
82    logical, save :: haveSIMvariables = .false.
83    logical, save :: havePropertyMap = .false.
84    logical, save :: haveSaneForceField = .false.
85 <  
85 >
86    logical, save :: FF_uses_DirectionalAtoms
87    logical, save :: FF_uses_LennardJones
88    logical, save :: FF_uses_Electrostatics
# Line 145 | Line 145 | contains
145   contains
146  
147    subroutine setRlistDF( this_rlist )
148 <    
148 >
149      real(kind=dp) :: this_rlist
150  
151      rlist = this_rlist
152      rlistsq = rlist * rlist
153 <    
153 >
154      haveRlist = .true.
155  
156 <  end subroutine setRlistDF    
156 >  end subroutine setRlistDF
157  
158    subroutine createPropertyMap(status)
159      integer :: nAtypes
# Line 170 | Line 170 | contains
170         status = -1
171         return
172      end if
173 <        
173 >
174      if (.not. allocated(PropertyMap)) then
175         allocate(PropertyMap(nAtypes))
176      endif
# Line 181 | Line 181 | contains
181  
182         call getElementProperty(atypes, i, "is_LennardJones", thisProperty)
183         PropertyMap(i)%is_LennardJones = thisProperty
184 <      
184 >
185         call getElementProperty(atypes, i, "is_Electrostatic", thisProperty)
186         PropertyMap(i)%is_Electrostatic = thisProperty
187  
188         call getElementProperty(atypes, i, "is_Charge", thisProperty)
189         PropertyMap(i)%is_Charge = thisProperty
190 <      
190 >
191         call getElementProperty(atypes, i, "is_Dipole", thisProperty)
192         PropertyMap(i)%is_Dipole = thisProperty
193  
# Line 241 | Line 241 | contains
241      integer :: myStatus
242  
243      error = 0
244 <    
244 >
245      if (.not. havePropertyMap) then
246  
247         myStatus = 0
# Line 286 | Line 286 | contains
286   #endif
287      return
288    end subroutine doReadyCheck
289    
289  
290 +
291    subroutine init_FF(use_RF_c, thisStat)
292  
293      logical, intent(in) :: use_RF_c
# Line 302 | Line 302 | contains
302  
303      !! Fortran's version of a cast:
304      FF_uses_RF = use_RF_c
305 <    
305 >
306      !! init_FF is called *after* all of the atom types have been
307      !! defined in atype_module using the new_atype subroutine.
308      !!
309      !! this will scan through the known atypes and figure out what
310      !! interactions are used by the force field.    
311 <  
311 >
312      FF_uses_DirectionalAtoms = .false.
313      FF_uses_LennardJones = .false.
314      FF_uses_Electrostatics = .false.
# Line 319 | Line 319 | contains
319      FF_uses_EAM = .false.
320      FF_uses_Shapes = .false.
321      FF_uses_FLARB = .false.
322 <    
322 >
323      call getMatchingElementList(atypes, "is_Directional", .true., &
324           nMatches, MatchList)
325      if (nMatches .gt. 0) FF_uses_DirectionalAtoms = .true.
# Line 327 | Line 327 | contains
327      call getMatchingElementList(atypes, "is_LennardJones", .true., &
328           nMatches, MatchList)
329      if (nMatches .gt. 0) FF_uses_LennardJones = .true.
330 <    
330 >
331      call getMatchingElementList(atypes, "is_Electrostatic", .true., &
332           nMatches, MatchList)
333      if (nMatches .gt. 0) then
# Line 340 | Line 340 | contains
340         FF_uses_Charges = .true.  
341         FF_uses_Electrostatics = .true.
342      endif
343 <    
343 >
344      call getMatchingElementList(atypes, "is_Dipole", .true., &
345           nMatches, MatchList)
346      if (nMatches .gt. 0) then
# Line 356 | Line 356 | contains
356         FF_uses_Electrostatics = .true.
357         FF_uses_DirectionalAtoms = .true.
358      endif
359 <    
359 >
360      call getMatchingElementList(atypes, "is_Sticky", .true., nMatches, &
361           MatchList)
362      if (nMatches .gt. 0) then
363         FF_uses_Sticky = .true.
364         FF_uses_DirectionalAtoms = .true.
365      endif
366 <    
366 >
367      call getMatchingElementList(atypes, "is_GayBerne", .true., &
368           nMatches, MatchList)
369      if (nMatches .gt. 0) then
370         FF_uses_GayBerne = .true.
371         FF_uses_DirectionalAtoms = .true.
372      endif
373 <    
373 >
374      call getMatchingElementList(atypes, "is_EAM", .true., nMatches, MatchList)
375      if (nMatches .gt. 0) FF_uses_EAM = .true.
376 <    
376 >
377      call getMatchingElementList(atypes, "is_Shape", .true., &
378           nMatches, MatchList)
379      if (nMatches .gt. 0) then
# Line 387 | Line 387 | contains
387  
388      !! Assume sanity (for the sake of argument)
389      haveSaneForceField = .true.
390 <    
390 >
391      !! check to make sure the FF_uses_RF setting makes sense
392 <    
392 >
393      if (FF_uses_dipoles) then
394         if (FF_uses_RF) then
395            dielect = getDielect()
# Line 402 | Line 402 | contains
402            haveSaneForceField = .false.
403            return
404         endif
405 <    endif
405 >    endif
406  
407      !sticky module does not contain check_sticky_FF anymore
408      !if (FF_uses_sticky) then
# Line 415 | Line 415 | contains
415      !endif
416  
417      if (FF_uses_EAM) then
418 <         call init_EAM_FF(my_status)
418 >       call init_EAM_FF(my_status)
419         if (my_status /= 0) then
420            write(default_error, *) "init_EAM_FF returned a bad status"
421            thisStat = -1
# Line 435 | Line 435 | contains
435  
436      if (FF_uses_GayBerne .and. FF_uses_LennardJones) then
437      endif
438 <    
438 >
439      if (.not. haveNeighborList) then
440         !! Create neighbor lists
441         call expandNeighborList(nLocal, my_status)
# Line 445 | Line 445 | contains
445            return
446         endif
447         haveNeighborList = .true.
448 <    endif    
449 <    
448 >    endif
449 >
450    end subroutine init_FF
451  
451  
452 +
453    !! Does force loop over i,j pairs. Calls do_pair to calculates forces.
454    !------------------------------------------------------------->
455    subroutine do_force_loop(q, q_group, A, eFrame, f, t, tau, pot, &
# Line 501 | Line 501 | contains
501      integer :: loopStart, loopEnd, loop
502  
503      real(kind=dp) :: listSkin = 1.0  
504 <    
504 >
505      !! initialize local variables  
506 <    
506 >
507   #ifdef IS_MPI
508      pot_local = 0.0_dp
509      nAtomsInRow   = getNatomsInRow(plan_atom_row)
# Line 513 | Line 513 | contains
513   #else
514      natoms = nlocal
515   #endif
516 <    
516 >
517      call doReadyCheck(localError)
518      if ( localError .ne. 0 ) then
519         call handleError("do_force_loop", "Not Initialized")
# Line 521 | Line 521 | contains
521         return
522      end if
523      call zero_work_arrays()
524 <        
524 >
525      do_pot = do_pot_c
526      do_stress = do_stress_c
527 <    
527 >
528      ! Gather all information needed by all force loops:
529 <    
529 >
530   #ifdef IS_MPI    
531 <    
531 >
532      call gather(q, q_Row, plan_atom_row_3d)
533      call gather(q, q_Col, plan_atom_col_3d)
534  
535      call gather(q_group, q_group_Row, plan_group_row_3d)
536      call gather(q_group, q_group_Col, plan_group_col_3d)
537 <        
537 >
538      if (FF_UsesDirectionalAtoms() .and. SIM_uses_DirectionalAtoms) then
539         call gather(eFrame, eFrame_Row, plan_atom_row_rotation)
540         call gather(eFrame, eFrame_Col, plan_atom_col_rotation)
541 <      
541 >
542         call gather(A, A_Row, plan_atom_row_rotation)
543         call gather(A, A_Col, plan_atom_col_rotation)
544      endif
545 <    
545 >
546   #endif
547 <    
547 >
548      !! Begin force loop timing:
549   #ifdef PROFILE
550      call cpu_time(forceTimeInitial)
551      nloops = nloops + 1
552   #endif
553 <    
553 >
554      loopEnd = PAIR_LOOP
555      if (FF_RequiresPrepairCalc() .and. SIM_requires_prepair_calc) then
556         loopStart = PREPAIR_LOOP
# Line 565 | Line 565 | contains
565         if (loop .eq. loopStart) then
566   #ifdef IS_MPI
567            call checkNeighborList(nGroupsInRow, q_group_row, listSkin, &
568 <             update_nlist)
568 >               update_nlist)
569   #else
570            call checkNeighborList(nGroups, q_group, listSkin, &
571 <             update_nlist)
571 >               update_nlist)
572   #endif
573         endif
574 <      
574 >
575         if (update_nlist) then
576            !! save current configuration and construct neighbor list
577   #ifdef IS_MPI
# Line 582 | Line 582 | contains
582            neighborListSize = size(list)
583            nlist = 0
584         endif
585 <      
585 >
586         istart = 1
587   #ifdef IS_MPI
588         iend = nGroupsInRow
# Line 592 | Line 592 | contains
592         outer: do i = istart, iend
593  
594            if (update_nlist) point(i) = nlist + 1
595 <          
595 >
596            n_in_i = groupStartRow(i+1) - groupStartRow(i)
597 <          
597 >
598            if (update_nlist) then
599   #ifdef IS_MPI
600               jstart = 1
# Line 609 | Line 609 | contains
609               ! make sure group i has neighbors
610               if (jstart .gt. jend) cycle outer
611            endif
612 <          
612 >
613            do jnab = jstart, jend
614               if (update_nlist) then
615                  j = jnab
# Line 628 | Line 628 | contains
628               if (rgrpsq < rlistsq) then
629                  if (update_nlist) then
630                     nlist = nlist + 1
631 <                  
631 >
632                     if (nlist > neighborListSize) then
633   #ifdef IS_MPI                
634                        call expandNeighborList(nGroupsInRow, listerror)
# Line 642 | Line 642 | contains
642                        end if
643                        neighborListSize = size(list)
644                     endif
645 <                  
645 >
646                     list(nlist) = j
647                  endif
648 <                
648 >
649                  if (loop .eq. PAIR_LOOP) then
650                     vij = 0.0d0
651                     fij(1:3) = 0.0d0
652                  endif
653 <                
653 >
654                  call get_switch(rgrpsq, sw, dswdr, rgrp, group_switch, &
655                       in_switching_region)
656 <                
656 >
657                  n_in_j = groupStartCol(j+1) - groupStartCol(j)
658 <                
658 >
659                  do ia = groupStartRow(i), groupStartRow(i+1)-1
660 <                  
660 >
661                     atom1 = groupListRow(ia)
662 <                  
662 >
663                     inner: do jb = groupStartCol(j), groupStartCol(j+1)-1
664 <                      
664 >
665                        atom2 = groupListCol(jb)
666 <                      
666 >
667                        if (skipThisPair(atom1, atom2)) cycle inner
668  
669                        if ((n_in_i .eq. 1).and.(n_in_j .eq. 1)) then
# Line 705 | Line 705 | contains
705                        endif
706                     enddo inner
707                  enddo
708 <                
708 >
709                  if (loop .eq. PAIR_LOOP) then
710                     if (in_switching_region) then
711                        swderiv = vij*dswdr/rgrp
712                        fij(1) = fij(1) + swderiv*d_grp(1)
713                        fij(2) = fij(2) + swderiv*d_grp(2)
714                        fij(3) = fij(3) + swderiv*d_grp(3)
715 <                      
715 >
716                        do ia=groupStartRow(i), groupStartRow(i+1)-1
717                           atom1=groupListRow(ia)
718                           mf = mfactRow(atom1)
# Line 726 | Line 726 | contains
726                           f(3,atom1) = f(3,atom1) + swderiv*d_grp(3)*mf
727   #endif
728                        enddo
729 <                      
729 >
730                        do jb=groupStartCol(j), groupStartCol(j+1)-1
731                           atom2=groupListCol(jb)
732                           mf = mfactCol(atom2)
# Line 741 | Line 741 | contains
741   #endif
742                        enddo
743                     endif
744 <                  
744 >
745                     if (do_stress) call add_stress_tensor(d_grp, fij)
746                  endif
747               end if
748            enddo
749         enddo outer
750 <      
750 >
751         if (update_nlist) then
752   #ifdef IS_MPI
753            point(nGroupsInRow + 1) = nlist + 1
# Line 761 | Line 761 | contains
761               update_nlist = .false.                              
762            endif
763         endif
764 <            
764 >
765         if (loop .eq. PREPAIR_LOOP) then
766            call do_preforce(nlocal, pot)
767         endif
768 <      
768 >
769      enddo
770 <    
770 >
771      !! Do timing
772   #ifdef PROFILE
773      call cpu_time(forceTimeFinal)
774      forceTime = forceTime + forceTimeFinal - forceTimeInitial
775   #endif    
776 <    
776 >
777   #ifdef IS_MPI
778      !!distribute forces
779 <    
779 >
780      f_temp = 0.0_dp
781      call scatter(f_Row,f_temp,plan_atom_row_3d)
782      do i = 1,nlocal
783         f(1:3,i) = f(1:3,i) + f_temp(1:3,i)
784      end do
785 <    
785 >
786      f_temp = 0.0_dp
787      call scatter(f_Col,f_temp,plan_atom_col_3d)
788      do i = 1,nlocal
789         f(1:3,i) = f(1:3,i) + f_temp(1:3,i)
790      end do
791 <    
791 >
792      if (FF_UsesDirectionalAtoms() .and. SIM_uses_DirectionalAtoms) then
793         t_temp = 0.0_dp
794         call scatter(t_Row,t_temp,plan_atom_row_3d)
# Line 797 | Line 797 | contains
797         end do
798         t_temp = 0.0_dp
799         call scatter(t_Col,t_temp,plan_atom_col_3d)
800 <      
800 >
801         do i = 1,nlocal
802            t(1:3,i) = t(1:3,i) + t_temp(1:3,i)
803         end do
804      endif
805 <    
805 >
806      if (do_pot) then
807         ! scatter/gather pot_row into the members of my column
808         call scatter(pot_Row, pot_Temp, plan_atom_row)
809 <      
809 >
810         ! scatter/gather pot_local into all other procs
811         ! add resultant to get total pot
812         do i = 1, nlocal
813            pot_local = pot_local + pot_Temp(i)
814         enddo
815 <      
815 >
816         pot_Temp = 0.0_DP
817 <      
817 >
818         call scatter(pot_Col, pot_Temp, plan_atom_col)
819         do i = 1, nlocal
820            pot_local = pot_local + pot_Temp(i)
821         enddo
822 <      
822 >
823      endif
824   #endif
825 <    
825 >
826      if (FF_RequiresPostpairCalc() .and. SIM_requires_postpair_calc) then
827 <      
827 >
828         if (FF_uses_RF .and. SIM_uses_RF) then
829 <          
829 >
830   #ifdef IS_MPI
831            call scatter(rf_Row,rf,plan_atom_row_3d)
832            call scatter(rf_Col,rf_Temp,plan_atom_col_3d)
# Line 834 | Line 834 | contains
834               rf(1:3,i) = rf(1:3,i) + rf_Temp(1:3,i)
835            end do
836   #endif
837 <          
837 >
838            do i = 1, nLocal
839 <            
839 >
840               rfpot = 0.0_DP
841   #ifdef IS_MPI
842               me_i = atid_row(i)
843   #else
844               me_i = atid(i)
845   #endif
846 <            
846 >
847               if (PropertyMap(me_i)%is_Dipole) then
848 <                
848 >
849                  mu_i = getDipoleMoment(me_i)
850 <    
850 >
851                  !! The reaction field needs to include a self contribution
852                  !! to the field:
853                  call accumulate_self_rf(i, mu_i, eFrame)
# Line 858 | Line 858 | contains
858                  pot_local = pot_local + rfpot
859   #else
860                  pot = pot + rfpot
861 <      
861 >
862   #endif
863 <             endif            
863 >             endif
864            enddo
865         endif
866      endif
867 <    
868 <    
867 >
868 >
869   #ifdef IS_MPI
870 <    
870 >
871      if (do_pot) then
872         pot = pot + pot_local
873         !! we assume the c code will do the allreduce to get the total potential
874         !! we could do it right here if we needed to...
875      endif
876 <    
876 >
877      if (do_stress) then
878         call mpi_allreduce(tau_Temp, tau, 9,mpi_double_precision,mpi_sum, &
879              mpi_comm_world,mpi_err)
880         call mpi_allreduce(virial_Temp, virial,1,mpi_double_precision,mpi_sum, &
881              mpi_comm_world,mpi_err)
882      endif
883 <    
883 >
884   #else
885 <    
885 >
886      if (do_stress) then
887         tau = tau_Temp
888         virial = virial_Temp
889      endif
890 <    
890 >
891   #endif
892 <      
892 >
893    end subroutine do_force_loop
894 <  
894 >
895    subroutine do_pair(i, j, rijsq, d, sw, do_pot, &
896         eFrame, A, f, t, pot, vpair, fpair)
897  
# Line 922 | Line 922 | contains
922      me_j = atid(j)
923   #endif
924  
925 < !    write(*,*) i, j, me_i, me_j
926 <    
925 >    !    write(*,*) i, j, me_i, me_j
926 >
927      if (FF_uses_LennardJones .and. SIM_uses_LennardJones) then
928 <      
928 >
929         if ( PropertyMap(me_i)%is_LennardJones .and. &
930              PropertyMap(me_j)%is_LennardJones ) then
931            call do_lj_pair(i, j, d, r, rijsq, sw, vpair, fpair, pot, f, do_pot)
932         endif
933 <      
933 >
934      endif
935 <    
935 >
936      if (FF_uses_Electrostatics .and. SIM_uses_Electrostatics) then
937 <      
937 >
938         if (PropertyMap(me_i)%is_Electrostatic .and. &
939              PropertyMap(me_j)%is_Electrostatic) then
940            call doElectrostaticPair(i, j, d, r, rijsq, sw, vpair, fpair, &
941                 pot, eFrame, f, t, do_pot)
942         endif
943 <      
943 >
944         if (FF_uses_dipoles .and. SIM_uses_dipoles) then      
945            if ( PropertyMap(me_i)%is_Dipole .and. &
946                 PropertyMap(me_j)%is_Dipole) then
# Line 959 | Line 959 | contains
959            call do_sticky_pair(i, j, d, r, rijsq, sw, vpair, fpair, &
960                 pot, A, f, t, do_pot)
961         endif
962 <      
962 >
963      endif
964  
965  
966      if (FF_uses_GayBerne .and. SIM_uses_GayBerne) then
967 <      
967 >
968         if ( PropertyMap(me_i)%is_GayBerne .and. &
969              PropertyMap(me_j)%is_GayBerne) then
970            call do_gb_pair(i, j, d, r, rijsq, sw, vpair, fpair, &
971                 pot, A, f, t, do_pot)
972         endif
973 <      
973 >
974      endif
975 <    
975 >
976      if (FF_uses_EAM .and. SIM_uses_EAM) then
977 <      
977 >
978         if ( PropertyMap(me_i)%is_EAM .and. PropertyMap(me_j)%is_EAM) then
979            call do_eam_pair(i, j, d, r, rijsq, sw, vpair, fpair, pot, f, &
980                 do_pot)
981         endif
982 <      
982 >
983      endif
984  
985  
986 < !    write(*,*) PropertyMap(me_i)%is_Shape,PropertyMap(me_j)%is_Shape
986 >    !    write(*,*) PropertyMap(me_i)%is_Shape,PropertyMap(me_j)%is_Shape
987  
988      if (FF_uses_Shapes .and. SIM_uses_Shapes) then
989         if ( PropertyMap(me_i)%is_Shape .and. &
# Line 991 | Line 991 | contains
991            call do_shape_pair(i, j, d, r, rijsq, sw, vpair, fpair, &
992                 pot, A, f, t, do_pot)
993         endif
994 <      
994 >       if ( (PropertyMap(me_i)%is_Shape .and. &
995 >            PropertyMap(me_j)%is_LennardJones) .or. &
996 >            (PropertyMap(me_i)%is_LennardJones .and. &
997 >            PropertyMap(me_j)%is_Shape) ) then
998 >          call do_shape_pair(i, j, d, r, rijsq, sw, vpair, fpair, &
999 >               pot, A, f, t, do_pot)
1000 >       endif
1001      endif
1002 <    
1002 >
1003    end subroutine do_pair
1004  
1005    subroutine do_prepair(i, j, rijsq, d, sw, rcijsq, dc, &
1006         do_pot, do_stress, eFrame, A, f, t, pot)
1007  
1008 <   real( kind = dp ) :: pot, sw
1009 <   real( kind = dp ), dimension(9,nLocal) :: eFrame
1010 <   real (kind=dp), dimension(9,nLocal) :: A
1011 <   real (kind=dp), dimension(3,nLocal) :: f
1012 <   real (kind=dp), dimension(3,nLocal) :: t
1007 <  
1008 <   logical, intent(inout) :: do_pot, do_stress
1009 <   integer, intent(in) :: i, j
1010 <   real ( kind = dp ), intent(inout)    :: rijsq, rcijsq
1011 <   real ( kind = dp )                :: r, rc
1012 <   real ( kind = dp ), intent(inout) :: d(3), dc(3)
1013 <  
1014 <   logical :: is_EAM_i, is_EAM_j
1015 <  
1016 <   integer :: me_i, me_j
1017 <  
1008 >    real( kind = dp ) :: pot, sw
1009 >    real( kind = dp ), dimension(9,nLocal) :: eFrame
1010 >    real (kind=dp), dimension(9,nLocal) :: A
1011 >    real (kind=dp), dimension(3,nLocal) :: f
1012 >    real (kind=dp), dimension(3,nLocal) :: t
1013  
1014 +    logical, intent(inout) :: do_pot, do_stress
1015 +    integer, intent(in) :: i, j
1016 +    real ( kind = dp ), intent(inout)    :: rijsq, rcijsq
1017 +    real ( kind = dp )                :: r, rc
1018 +    real ( kind = dp ), intent(inout) :: d(3), dc(3)
1019 +
1020 +    logical :: is_EAM_i, is_EAM_j
1021 +
1022 +    integer :: me_i, me_j
1023 +
1024 +
1025      r = sqrt(rijsq)
1026      if (SIM_uses_molecular_cutoffs) then
1027         rc = sqrt(rcijsq)
1028      else
1029         rc = r
1030      endif
1025  
1031  
1032 +
1033   #ifdef IS_MPI  
1034 <   me_i = atid_row(i)
1035 <   me_j = atid_col(j)  
1034 >    me_i = atid_row(i)
1035 >    me_j = atid_col(j)  
1036   #else  
1037 <   me_i = atid(i)
1038 <   me_j = atid(j)  
1037 >    me_i = atid(i)
1038 >    me_j = atid(j)  
1039   #endif
1034  
1035   if (FF_uses_EAM .and. SIM_uses_EAM) then
1036      
1037      if (PropertyMap(me_i)%is_EAM .and. PropertyMap(me_j)%is_EAM) &
1038           call calc_EAM_prepair_rho(i, j, d, r, rijsq )
1039      
1040   endif
1041  
1042 end subroutine do_prepair
1043
1044
1045 subroutine do_preforce(nlocal,pot)
1046   integer :: nlocal
1047   real( kind = dp ) :: pot
1048  
1049   if (FF_uses_EAM .and. SIM_uses_EAM) then
1050      call calc_EAM_preforce_Frho(nlocal,pot)
1051   endif
1052  
1053  
1054 end subroutine do_preforce
1055
1056
1057 subroutine get_interatomic_vector(q_i, q_j, d, r_sq)
1058  
1059   real (kind = dp), dimension(3) :: q_i
1060   real (kind = dp), dimension(3) :: q_j
1061   real ( kind = dp ), intent(out) :: r_sq
1062   real( kind = dp ) :: d(3), scaled(3)
1063   integer i
1064  
1065   d(1:3) = q_j(1:3) - q_i(1:3)
1066  
1067   ! Wrap back into periodic box if necessary
1068   if ( SIM_uses_PBC ) then
1069      
1070      if( .not.boxIsOrthorhombic ) then
1071         ! calc the scaled coordinates.
1072        
1073         scaled = matmul(HmatInv, d)
1074        
1075         ! wrap the scaled coordinates
1076        
1077         scaled = scaled  - anint(scaled)
1078        
1079        
1080         ! calc the wrapped real coordinates from the wrapped scaled
1081         ! coordinates
1082        
1083         d = matmul(Hmat,scaled)
1084        
1085      else
1086         ! calc the scaled coordinates.
1087        
1088         do i = 1, 3
1089            scaled(i) = d(i) * HmatInv(i,i)
1090            
1091            ! wrap the scaled coordinates
1092            
1093            scaled(i) = scaled(i) - anint(scaled(i))
1094            
1095            ! calc the wrapped real coordinates from the wrapped scaled
1096            ! coordinates
1097            
1098            d(i) = scaled(i)*Hmat(i,i)
1099         enddo
1100      endif
1101      
1102   endif
1103  
1104   r_sq = dot_product(d,d)
1105  
1106 end subroutine get_interatomic_vector
1107
1108 subroutine zero_work_arrays()
1109  
1110 #ifdef IS_MPI
1111  
1112   q_Row = 0.0_dp
1113   q_Col = 0.0_dp
1040  
1041 <   q_group_Row = 0.0_dp
1042 <   q_group_Col = 0.0_dp  
1043 <  
1044 <   eFrame_Row = 0.0_dp
1045 <   eFrame_Col = 0.0_dp
1046 <  
1047 <   A_Row = 0.0_dp
1048 <   A_Col = 0.0_dp
1049 <  
1050 <   f_Row = 0.0_dp
1051 <   f_Col = 0.0_dp
1052 <   f_Temp = 0.0_dp
1053 <  
1054 <   t_Row = 0.0_dp
1055 <   t_Col = 0.0_dp
1056 <   t_Temp = 0.0_dp
1057 <  
1058 <   pot_Row = 0.0_dp
1059 <   pot_Col = 0.0_dp
1060 <   pot_Temp = 0.0_dp
1061 <  
1062 <   rf_Row = 0.0_dp
1063 <   rf_Col = 0.0_dp
1064 <   rf_Temp = 0.0_dp
1065 <  
1041 >    if (FF_uses_EAM .and. SIM_uses_EAM) then
1042 >
1043 >       if (PropertyMap(me_i)%is_EAM .and. PropertyMap(me_j)%is_EAM) &
1044 >            call calc_EAM_prepair_rho(i, j, d, r, rijsq )
1045 >
1046 >    endif
1047 >
1048 >  end subroutine do_prepair
1049 >
1050 >
1051 >  subroutine do_preforce(nlocal,pot)
1052 >    integer :: nlocal
1053 >    real( kind = dp ) :: pot
1054 >
1055 >    if (FF_uses_EAM .and. SIM_uses_EAM) then
1056 >       call calc_EAM_preforce_Frho(nlocal,pot)
1057 >    endif
1058 >
1059 >
1060 >  end subroutine do_preforce
1061 >
1062 >
1063 >  subroutine get_interatomic_vector(q_i, q_j, d, r_sq)
1064 >
1065 >    real (kind = dp), dimension(3) :: q_i
1066 >    real (kind = dp), dimension(3) :: q_j
1067 >    real ( kind = dp ), intent(out) :: r_sq
1068 >    real( kind = dp ) :: d(3), scaled(3)
1069 >    integer i
1070 >
1071 >    d(1:3) = q_j(1:3) - q_i(1:3)
1072 >
1073 >    ! Wrap back into periodic box if necessary
1074 >    if ( SIM_uses_PBC ) then
1075 >
1076 >       if( .not.boxIsOrthorhombic ) then
1077 >          ! calc the scaled coordinates.
1078 >
1079 >          scaled = matmul(HmatInv, d)
1080 >
1081 >          ! wrap the scaled coordinates
1082 >
1083 >          scaled = scaled  - anint(scaled)
1084 >
1085 >
1086 >          ! calc the wrapped real coordinates from the wrapped scaled
1087 >          ! coordinates
1088 >
1089 >          d = matmul(Hmat,scaled)
1090 >
1091 >       else
1092 >          ! calc the scaled coordinates.
1093 >
1094 >          do i = 1, 3
1095 >             scaled(i) = d(i) * HmatInv(i,i)
1096 >
1097 >             ! wrap the scaled coordinates
1098 >
1099 >             scaled(i) = scaled(i) - anint(scaled(i))
1100 >
1101 >             ! calc the wrapped real coordinates from the wrapped scaled
1102 >             ! coordinates
1103 >
1104 >             d(i) = scaled(i)*Hmat(i,i)
1105 >          enddo
1106 >       endif
1107 >
1108 >    endif
1109 >
1110 >    r_sq = dot_product(d,d)
1111 >
1112 >  end subroutine get_interatomic_vector
1113 >
1114 >  subroutine zero_work_arrays()
1115 >
1116 > #ifdef IS_MPI
1117 >
1118 >    q_Row = 0.0_dp
1119 >    q_Col = 0.0_dp
1120 >
1121 >    q_group_Row = 0.0_dp
1122 >    q_group_Col = 0.0_dp  
1123 >
1124 >    eFrame_Row = 0.0_dp
1125 >    eFrame_Col = 0.0_dp
1126 >
1127 >    A_Row = 0.0_dp
1128 >    A_Col = 0.0_dp
1129 >
1130 >    f_Row = 0.0_dp
1131 >    f_Col = 0.0_dp
1132 >    f_Temp = 0.0_dp
1133 >
1134 >    t_Row = 0.0_dp
1135 >    t_Col = 0.0_dp
1136 >    t_Temp = 0.0_dp
1137 >
1138 >    pot_Row = 0.0_dp
1139 >    pot_Col = 0.0_dp
1140 >    pot_Temp = 0.0_dp
1141 >
1142 >    rf_Row = 0.0_dp
1143 >    rf_Col = 0.0_dp
1144 >    rf_Temp = 0.0_dp
1145 >
1146   #endif
1147 <
1148 <   if (FF_uses_EAM .and. SIM_uses_EAM) then
1149 <      call clean_EAM()
1150 <   endif
1151 <  
1152 <   rf = 0.0_dp
1153 <   tau_Temp = 0.0_dp
1154 <   virial_Temp = 0.0_dp
1155 < end subroutine zero_work_arrays
1156 <
1157 < function skipThisPair(atom1, atom2) result(skip_it)
1158 <   integer, intent(in) :: atom1
1159 <   integer, intent(in), optional :: atom2
1160 <   logical :: skip_it
1161 <   integer :: unique_id_1, unique_id_2
1162 <   integer :: me_i,me_j
1163 <   integer :: i
1164 <  
1165 <   skip_it = .false.
1166 <  
1167 <   !! there are a number of reasons to skip a pair or a particle
1168 <   !! mostly we do this to exclude atoms who are involved in short
1169 <   !! range interactions (bonds, bends, torsions), but we also need
1170 <   !! to exclude some overcounted interactions that result from
1171 <   !! the parallel decomposition
1172 <  
1147 >
1148 >    if (FF_uses_EAM .and. SIM_uses_EAM) then
1149 >       call clean_EAM()
1150 >    endif
1151 >
1152 >    rf = 0.0_dp
1153 >    tau_Temp = 0.0_dp
1154 >    virial_Temp = 0.0_dp
1155 >  end subroutine zero_work_arrays
1156 >
1157 >  function skipThisPair(atom1, atom2) result(skip_it)
1158 >    integer, intent(in) :: atom1
1159 >    integer, intent(in), optional :: atom2
1160 >    logical :: skip_it
1161 >    integer :: unique_id_1, unique_id_2
1162 >    integer :: me_i,me_j
1163 >    integer :: i
1164 >
1165 >    skip_it = .false.
1166 >
1167 >    !! there are a number of reasons to skip a pair or a particle
1168 >    !! mostly we do this to exclude atoms who are involved in short
1169 >    !! range interactions (bonds, bends, torsions), but we also need
1170 >    !! to exclude some overcounted interactions that result from
1171 >    !! the parallel decomposition
1172 >
1173   #ifdef IS_MPI
1174 <   !! in MPI, we have to look up the unique IDs for each atom
1175 <   unique_id_1 = AtomRowToGlobal(atom1)
1174 >    !! in MPI, we have to look up the unique IDs for each atom
1175 >    unique_id_1 = AtomRowToGlobal(atom1)
1176   #else
1177 <   !! in the normal loop, the atom numbers are unique
1178 <   unique_id_1 = atom1
1177 >    !! in the normal loop, the atom numbers are unique
1178 >    unique_id_1 = atom1
1179   #endif
1180 <  
1181 <   !! We were called with only one atom, so just check the global exclude
1182 <   !! list for this atom
1183 <   if (.not. present(atom2)) then
1184 <      do i = 1, nExcludes_global
1185 <         if (excludesGlobal(i) == unique_id_1) then
1186 <            skip_it = .true.
1187 <            return
1188 <         end if
1189 <      end do
1190 <      return
1191 <   end if
1192 <  
1180 >
1181 >    !! We were called with only one atom, so just check the global exclude
1182 >    !! list for this atom
1183 >    if (.not. present(atom2)) then
1184 >       do i = 1, nExcludes_global
1185 >          if (excludesGlobal(i) == unique_id_1) then
1186 >             skip_it = .true.
1187 >             return
1188 >          end if
1189 >       end do
1190 >       return
1191 >    end if
1192 >
1193   #ifdef IS_MPI
1194 <   unique_id_2 = AtomColToGlobal(atom2)
1194 >    unique_id_2 = AtomColToGlobal(atom2)
1195   #else
1196 <   unique_id_2 = atom2
1196 >    unique_id_2 = atom2
1197   #endif
1198 <  
1198 >
1199   #ifdef IS_MPI
1200 <   !! this situation should only arise in MPI simulations
1201 <   if (unique_id_1 == unique_id_2) then
1202 <      skip_it = .true.
1203 <      return
1204 <   end if
1205 <  
1206 <   !! this prevents us from doing the pair on multiple processors
1207 <   if (unique_id_1 < unique_id_2) then
1208 <      if (mod(unique_id_1 + unique_id_2,2) == 0) then
1209 <         skip_it = .true.
1210 <         return
1211 <      endif
1212 <   else                
1213 <      if (mod(unique_id_1 + unique_id_2,2) == 1) then
1214 <         skip_it = .true.
1215 <         return
1216 <      endif
1217 <   endif
1200 >    !! this situation should only arise in MPI simulations
1201 >    if (unique_id_1 == unique_id_2) then
1202 >       skip_it = .true.
1203 >       return
1204 >    end if
1205 >
1206 >    !! this prevents us from doing the pair on multiple processors
1207 >    if (unique_id_1 < unique_id_2) then
1208 >       if (mod(unique_id_1 + unique_id_2,2) == 0) then
1209 >          skip_it = .true.
1210 >          return
1211 >       endif
1212 >    else                
1213 >       if (mod(unique_id_1 + unique_id_2,2) == 1) then
1214 >          skip_it = .true.
1215 >          return
1216 >       endif
1217 >    endif
1218   #endif
1219 <  
1220 <   !! the rest of these situations can happen in all simulations:
1221 <   do i = 1, nExcludes_global      
1222 <      if ((excludesGlobal(i) == unique_id_1) .or. &
1223 <           (excludesGlobal(i) == unique_id_2)) then
1224 <         skip_it = .true.
1225 <         return
1226 <      endif
1227 <   enddo
1228 <  
1229 <   do i = 1, nSkipsForAtom(atom1)
1230 <      if (skipsForAtom(atom1, i) .eq. unique_id_2) then
1231 <         skip_it = .true.
1232 <         return
1233 <      endif
1234 <   end do
1235 <  
1236 <   return
1237 < end function skipThisPair
1238 <
1239 < function FF_UsesDirectionalAtoms() result(doesit)
1240 <   logical :: doesit
1241 <   doesit = FF_uses_DirectionalAtoms .or. FF_uses_Dipoles .or. &
1242 <        FF_uses_Quadrupoles .or. FF_uses_Sticky .or. &
1243 <        FF_uses_GayBerne .or. FF_uses_Shapes
1244 < end function FF_UsesDirectionalAtoms
1245 <
1246 < function FF_RequiresPrepairCalc() result(doesit)
1247 <   logical :: doesit
1248 <   doesit = FF_uses_EAM
1249 < end function FF_RequiresPrepairCalc
1250 <
1251 < function FF_RequiresPostpairCalc() result(doesit)
1252 <   logical :: doesit
1253 <   doesit = FF_uses_RF
1254 < end function FF_RequiresPostpairCalc
1255 <
1219 >
1220 >    !! the rest of these situations can happen in all simulations:
1221 >    do i = 1, nExcludes_global      
1222 >       if ((excludesGlobal(i) == unique_id_1) .or. &
1223 >            (excludesGlobal(i) == unique_id_2)) then
1224 >          skip_it = .true.
1225 >          return
1226 >       endif
1227 >    enddo
1228 >
1229 >    do i = 1, nSkipsForAtom(atom1)
1230 >       if (skipsForAtom(atom1, i) .eq. unique_id_2) then
1231 >          skip_it = .true.
1232 >          return
1233 >       endif
1234 >    end do
1235 >
1236 >    return
1237 >  end function skipThisPair
1238 >
1239 >  function FF_UsesDirectionalAtoms() result(doesit)
1240 >    logical :: doesit
1241 >    doesit = FF_uses_DirectionalAtoms .or. FF_uses_Dipoles .or. &
1242 >         FF_uses_Quadrupoles .or. FF_uses_Sticky .or. &
1243 >         FF_uses_GayBerne .or. FF_uses_Shapes
1244 >  end function FF_UsesDirectionalAtoms
1245 >
1246 >  function FF_RequiresPrepairCalc() result(doesit)
1247 >    logical :: doesit
1248 >    doesit = FF_uses_EAM
1249 >  end function FF_RequiresPrepairCalc
1250 >
1251 >  function FF_RequiresPostpairCalc() result(doesit)
1252 >    logical :: doesit
1253 >    doesit = FF_uses_RF
1254 >  end function FF_RequiresPostpairCalc
1255 >
1256   #ifdef PROFILE
1257 < function getforcetime() result(totalforcetime)
1258 <   real(kind=dp) :: totalforcetime
1259 <   totalforcetime = forcetime
1260 < end function getforcetime
1257 >  function getforcetime() result(totalforcetime)
1258 >    real(kind=dp) :: totalforcetime
1259 >    totalforcetime = forcetime
1260 >  end function getforcetime
1261   #endif
1256
1257 !! This cleans componets of force arrays belonging only to fortran
1262  
1263 < subroutine add_stress_tensor(dpair, fpair)
1264 <  
1265 <   real( kind = dp ), dimension(3), intent(in) :: dpair, fpair
1266 <  
1267 <   ! because the d vector is the rj - ri vector, and
1268 <   ! because fx, fy, fz are the force on atom i, we need a
1269 <   ! negative sign here:  
1270 <  
1271 <   tau_Temp(1) = tau_Temp(1) - dpair(1) * fpair(1)
1272 <   tau_Temp(2) = tau_Temp(2) - dpair(1) * fpair(2)
1273 <   tau_Temp(3) = tau_Temp(3) - dpair(1) * fpair(3)
1274 <   tau_Temp(4) = tau_Temp(4) - dpair(2) * fpair(1)
1275 <   tau_Temp(5) = tau_Temp(5) - dpair(2) * fpair(2)
1276 <   tau_Temp(6) = tau_Temp(6) - dpair(2) * fpair(3)
1277 <   tau_Temp(7) = tau_Temp(7) - dpair(3) * fpair(1)
1278 <   tau_Temp(8) = tau_Temp(8) - dpair(3) * fpair(2)
1279 <   tau_Temp(9) = tau_Temp(9) - dpair(3) * fpair(3)
1280 <  
1281 <   virial_Temp = virial_Temp + &
1282 <        (tau_Temp(1) + tau_Temp(5) + tau_Temp(9))
1283 <  
1284 < end subroutine add_stress_tensor
1285 <
1263 >  !! This cleans componets of force arrays belonging only to fortran
1264 >
1265 >  subroutine add_stress_tensor(dpair, fpair)
1266 >
1267 >    real( kind = dp ), dimension(3), intent(in) :: dpair, fpair
1268 >
1269 >    ! because the d vector is the rj - ri vector, and
1270 >    ! because fx, fy, fz are the force on atom i, we need a
1271 >    ! negative sign here:  
1272 >
1273 >    tau_Temp(1) = tau_Temp(1) - dpair(1) * fpair(1)
1274 >    tau_Temp(2) = tau_Temp(2) - dpair(1) * fpair(2)
1275 >    tau_Temp(3) = tau_Temp(3) - dpair(1) * fpair(3)
1276 >    tau_Temp(4) = tau_Temp(4) - dpair(2) * fpair(1)
1277 >    tau_Temp(5) = tau_Temp(5) - dpair(2) * fpair(2)
1278 >    tau_Temp(6) = tau_Temp(6) - dpair(2) * fpair(3)
1279 >    tau_Temp(7) = tau_Temp(7) - dpair(3) * fpair(1)
1280 >    tau_Temp(8) = tau_Temp(8) - dpair(3) * fpair(2)
1281 >    tau_Temp(9) = tau_Temp(9) - dpair(3) * fpair(3)
1282 >
1283 >    virial_Temp = virial_Temp + &
1284 >         (tau_Temp(1) + tau_Temp(5) + tau_Temp(9))
1285 >
1286 >  end subroutine add_stress_tensor
1287 >
1288   end module doForces

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