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Comparing trunk/OOPSE-4/src/UseTheForce/doForces.F90 (file contents):
Revision 2540 by chuckv, Mon Jan 9 22:22:35 2006 UTC vs.
Revision 2917 by chrisfen, Mon Jul 3 13:18:43 2006 UTC

# Line 45 | Line 45
45  
46   !! @author Charles F. Vardeman II
47   !! @author Matthew Meineke
48 < !! @version $Id: doForces.F90,v 1.75 2006-01-09 22:22:35 chuckv Exp $, $Date: 2006-01-09 22:22:35 $, $Name: not supported by cvs2svn $, $Revision: 1.75 $
48 > !! @version $Id: doForces.F90,v 1.84 2006-07-03 13:18:43 chrisfen Exp $, $Date: 2006-07-03 13:18:43 $, $Name: not supported by cvs2svn $, $Revision: 1.84 $
49  
50  
51   module doForces
# Line 72 | Line 72 | module doForces
72    PRIVATE
73  
74   #define __FORTRAN90
75 #include "UseTheForce/fSwitchingFunction.h"
75   #include "UseTheForce/fCutoffPolicy.h"
76   #include "UseTheForce/DarkSide/fInteractionMap.h"
77   #include "UseTheForce/DarkSide/fElectrostaticSummationMethod.h"
78  
80
79    INTEGER, PARAMETER:: PREPAIR_LOOP = 1
80    INTEGER, PARAMETER:: PAIR_LOOP    = 2
81  
# Line 91 | Line 89 | module doForces
89    logical, save :: haveElectrostaticSummationMethod = .false.
90    logical, save :: haveCutoffPolicy = .false.
91    logical, save :: VisitCutoffsAfterComputing = .false.
92 +  logical, save :: do_box_dipole = .false.
93  
94    logical, save :: FF_uses_DirectionalAtoms
95    logical, save :: FF_uses_Dipoles
# Line 119 | Line 118 | module doForces
118    public :: setCutoffs
119    public :: cWasLame
120    public :: setElectrostaticMethod
121 +  public :: setBoxDipole
122 +  public :: getBoxDipole
123    public :: setCutoffPolicy
124    public :: setSkinThickness
125    public :: do_force_loop
# Line 148 | Line 149 | module doForces
149       real(kind=dp) :: rlistsq
150    end type gtypeCutoffs
151    type(gtypeCutoffs), dimension(:,:), allocatable :: gtypeCutoffMap
152 +
153 +  real(kind=dp), dimension(3) :: boxDipole
154  
155   contains
156  
# Line 424 | Line 427 | contains
427      !! largest cutoff for any atypes present in this group.  We also
428      !! create gtypes at this point.
429      
430 <    tol = 1.0d-6
430 >    tol = 1.0e-6_dp
431      nGroupTypesRow = 0
432      nGroupTypesCol = 0
433      do i = istart, iend      
# Line 580 | Line 583 | contains
583          defaultDoShift = .true.
584          
585       endif
586 <
586 >    
587       localError = 0
588       call setLJDefaultCutoff( defaultRcut, defaultDoShift )
589       call setElectrostaticCutoffRadius( defaultRcut, defaultRsw )
590 <     call setCutoffEAM( defaultRcut, localError)
591 <     if (localError /= 0) then
592 <       write(errMsg, *) 'An error has occured in setting the EAM cutoff'
593 <       call handleError("setCutoffs", errMsg)
594 <     end if
592 <     call set_switch(GROUP_SWITCH, defaultRsw, defaultRcut)
593 <
590 >     call setCutoffEAM( defaultRcut )
591 >     call setCutoffSC( defaultRcut )
592 >     call set_switch(defaultRsw, defaultRcut)
593 >     call setHmatDangerousRcutValue(defaultRcut)
594 >        
595       haveDefaultCutoffs = .true.
596       haveGtypeCutoffMap = .false.
597 +
598     end subroutine setCutoffs
599  
600     subroutine cWasLame()
# Line 612 | Line 614 | contains
614      
615     end subroutine setCutoffPolicy
616    
617 +   subroutine setBoxDipole()
618 +
619 +     do_box_dipole = .true.
620 +    
621 +   end subroutine setBoxDipole
622 +
623 +   subroutine getBoxDipole( box_dipole )
624 +
625 +     real(kind=dp), intent(inout), dimension(3) :: box_dipole
626 +
627 +     box_dipole = boxDipole
628 +
629 +   end subroutine getBoxDipole
630 +
631     subroutine setElectrostaticMethod( thisESM )
632  
633       integer, intent(in) :: thisESM
# Line 638 | Line 654 | contains
654       SIM_requires_prepair_calc = SimRequiresPrepairCalc()
655       SIM_uses_PBC = SimUsesPBC()
656       SIM_uses_SC = SimUsesSC()
657 <    
657 >
658       haveSIMvariables = .true.
659      
660       return
# Line 646 | Line 662 | contains
662  
663    subroutine doReadyCheck(error)
664      integer, intent(out) :: error
649
665      integer :: myStatus
666  
667      error = 0
# Line 659 | Line 674 | contains
674         call createGtypeCutoffMap()      
675      endif
676  
662
677      if (VisitCutoffsAfterComputing) then
678 <       call set_switch(GROUP_SWITCH, largestRcut, largestRcut)      
678 >       call set_switch(largestRcut, largestRcut)      
679 >       call setHmatDangerousRcutValue(largestRcut)
680 >       call setCutoffEAM(largestRcut)
681 >       call setCutoffSC(largestRcut)
682 >       VisitCutoffsAfterComputing = .false.
683      endif
684  
667
685      if (.not. haveSIMvariables) then
686         call setSimVariables()
687      endif
688  
672  !  if (.not. haveRlist) then
673  !     write(default_error, *) 'rList has not been set in doForces!'
674  !     error = -1
675  !     return
676  !  endif
677
689      if (.not. haveNeighborList) then
690         write(default_error, *) 'neighbor list has not been initialized in doForces!'
691         error = -1
692         return
693      end if
694 <
694 >    
695      if (.not. haveSaneForceField) then
696         write(default_error, *) 'Force Field is not sane in doForces!'
697         error = -1
698         return
699      end if
700 <
700 >    
701   #ifdef IS_MPI
702      if (.not. isMPISimSet()) then
703         write(default_error,*) "ERROR: mpiSimulation has not been initialized!"
# Line 817 | Line 828 | contains
828      integer :: loopStart, loopEnd, loop
829      integer :: iHash
830      integer :: i1
820  
831  
832 +    !! the variables for the box dipole moment
833 + #ifdef IS_MPI
834 +    integer :: pChgCount_local
835 +    integer :: nChgCount_local
836 +    real(kind=dp) :: pChg_local
837 +    real(kind=dp) :: nChg_local
838 +    real(kind=dp), dimension(3) :: pChgPos_local
839 +    real(kind=dp), dimension(3) :: nChgPos_local
840 +    real(kind=dp), dimension(3) :: dipVec_local
841 + #endif
842 +    integer :: pChgCount
843 +    integer :: nChgCount
844 +    real(kind=dp) :: pChg
845 +    real(kind=dp) :: nChg
846 +    real(kind=dp) :: chg_value
847 +    real(kind=dp), dimension(3) :: pChgPos
848 +    real(kind=dp), dimension(3) :: nChgPos
849 +    real(kind=dp), dimension(3) :: dipVec
850 +    real(kind=dp), dimension(3) :: chgVec
851 +
852 +    !! initialize box dipole variables
853 +    if (do_box_dipole) then
854 + #ifdef IS_MPI
855 +       pChg_local = 0.0_dp
856 +       nChg_local = 0.0_dp
857 +       pChgCount_local = 0
858 +       nChgCount_local = 0
859 +       do i=1, 3
860 +          pChgPos_local = 0.0_dp
861 +          nChgPos_local = 0.0_dp
862 +          dipVec_local = 0.0_dp
863 +       enddo
864 + #endif
865 +       pChg = 0.0_dp
866 +       nChg = 0.0_dp
867 +       pChgCount = 0
868 +       nChgCount = 0
869 +       chg_value = 0.0_dp
870 +      
871 +       do i=1, 3
872 +          pChgPos(i) = 0.0_dp
873 +          nChgPos(i) = 0.0_dp
874 +          dipVec(i) = 0.0_dp
875 +          chgVec(i) = 0.0_dp
876 +          boxDipole(i) = 0.0_dp
877 +       enddo
878 +    endif
879 +
880      !! initialize local variables  
881  
882   #ifdef IS_MPI
# Line 964 | Line 1022 | contains
1022  
1023                     list(nlist) = j
1024                  endif
1025 <
968 <
969 <                
1025 >                
1026                  if (rgrpsq < gtypeCutoffMap(groupToGtypeRow(i),groupToGtypeCol(j))%rCutsq) then
1027  
1028                     rCut = gtypeCutoffMap(groupToGtypeRow(i),groupToGtypeCol(j))%rCut
1029                     if (loop .eq. PAIR_LOOP) then
1030 <                      vij = 0.0d0
1031 <                      fij(1:3) = 0.0d0
1030 >                      vij = 0.0_dp
1031 >                      fij(1) = 0.0_dp
1032 >                      fij(2) = 0.0_dp
1033 >                      fij(3) = 0.0_dp
1034                     endif
1035                    
1036 <                   call get_switch(rgrpsq, sw, dswdr, rgrp, &
979 <                        group_switch, in_switching_region)
1036 >                   call get_switch(rgrpsq, sw, dswdr,rgrp, in_switching_region)
1037                    
1038                     n_in_j = groupStartCol(j+1) - groupStartCol(j)
1039                    
# Line 991 | Line 1048 | contains
1048                           if (skipThisPair(atom1, atom2))  cycle inner
1049                          
1050                           if ((n_in_i .eq. 1).and.(n_in_j .eq. 1)) then
1051 <                            d_atm(1:3) = d_grp(1:3)
1051 >                            d_atm(1) = d_grp(1)
1052 >                            d_atm(2) = d_grp(2)
1053 >                            d_atm(3) = d_grp(3)
1054                              ratmsq = rgrpsq
1055                           else
1056   #ifdef IS_MPI
# Line 1024 | Line 1083 | contains
1083                                   d_grp, rgrp, rCut)
1084   #endif
1085                              vij = vij + vpair
1086 <                            fij(1:3) = fij(1:3) + fpair(1:3)
1086 >                            fij(1) = fij(1) + fpair(1)
1087 >                            fij(2) = fij(2) + fpair(2)
1088 >                            fij(3) = fij(3) + fpair(3)
1089                           endif
1090                        enddo inner
1091                     enddo
# Line 1185 | Line 1246 | contains
1246                  
1247                  ! prevent overcounting of the skips
1248                  if (i.lt.j) then
1249 <                   call get_interatomic_vector(q(:,i), &
1250 <                        q(:,j), d_atm, ratmsq)
1251 <                   rVal = dsqrt(ratmsq)
1191 <                   call get_switch(ratmsq, sw, dswdr, rVal, group_switch, &
1192 <                        in_switching_region)
1249 >                   call get_interatomic_vector(q(:,i), q(:,j), d_atm, ratmsq)
1250 >                   rVal = sqrt(ratmsq)
1251 >                   call get_switch(ratmsq, sw, dswdr, rVal,in_switching_region)
1252   #ifdef IS_MPI
1253                     call rf_self_excludes(i, j, sw, eFrame, d_atm, rVal, &
1254                          vpair, pot_local(ELECTROSTATIC_POT), f, t, do_pot)
# Line 1200 | Line 1259 | contains
1259                  endif
1260               enddo
1261            endif
1262 +
1263 +          if (do_box_dipole) then
1264 + #ifdef IS_MPI
1265 +             call accumulate_box_dipole(i, eFrame, q(:,i), pChg_local, &
1266 +                  nChg_local, pChgPos_local, nChgPos_local, dipVec_local, &
1267 +                  pChgCount_local, nChgCount_local)
1268 + #else
1269 +             call accumulate_box_dipole(i, eFrame, q(:,i), pChg, nChg, &
1270 +                  pChgPos, nChgPos, dipVec, pChgCount, nChgCount)
1271 + #endif
1272 +          endif
1273         enddo
1274      endif
1275 <    
1276 < #ifdef IS_MPI
1207 <    
1275 >
1276 > #ifdef IS_MPI
1277      if (do_pot) then
1278 <       call mpi_allreduce(pot_local, pot, LR_POT_TYPES,mpi_double_precision,mpi_sum, &
1278 > #ifdef SINGLE_PRECISION
1279 >       call mpi_allreduce(pot_local, pot, LR_POT_TYPES,mpi_real,mpi_sum, &
1280              mpi_comm_world,mpi_err)            
1281 + #else
1282 +       call mpi_allreduce(pot_local, pot, LR_POT_TYPES,mpi_double_precision, &
1283 +            mpi_sum, mpi_comm_world,mpi_err)            
1284 + #endif
1285      endif
1286      
1287      if (do_stress) then
1288 + #ifdef SINGLE_PRECISION
1289 +       call mpi_allreduce(tau_Temp, tau, 9,mpi_real,mpi_sum, &
1290 +            mpi_comm_world,mpi_err)
1291 +       call mpi_allreduce(virial_Temp, virial,1,mpi_real,mpi_sum, &
1292 +            mpi_comm_world,mpi_err)
1293 + #else
1294         call mpi_allreduce(tau_Temp, tau, 9,mpi_double_precision,mpi_sum, &
1295              mpi_comm_world,mpi_err)
1296         call mpi_allreduce(virial_Temp, virial,1,mpi_double_precision,mpi_sum, &
1297              mpi_comm_world,mpi_err)
1298 + #endif
1299      endif
1300      
1301 +    if (do_box_dipole) then
1302 +
1303 + #ifdef SINGLE_PRECISION
1304 +       call mpi_allreduce(pChg_local, pChg, 1, mpi_real, mpi_sum, &
1305 +            mpi_comm_world, mpi_err)
1306 +       call mpi_allreduce(nChg_local, nChg, 1, mpi_real, mpi_sum, &
1307 +            mpi_comm_world, mpi_err)
1308 +       call mpi_allreduce(pChgCount_local, pChgCount, 1, mpi_integer, mpi_sum,&
1309 +            mpi_comm_world, mpi_err)
1310 +       call mpi_allreduce(nChgCount_local, nChgCount, 1, mpi_integer, mpi_sum,&
1311 +            mpi_comm_world, mpi_err)
1312 +       call mpi_allreduce(pChgPos_local, pChgPos, 3, mpi_real, mpi_sum, &
1313 +            mpi_comm_world, mpi_err)
1314 +       call mpi_allreduce(nChgPos_local, nChgPos, 3, mpi_real, mpi_sum, &
1315 +            mpi_comm_world, mpi_err)
1316 +       call mpi_allreduce(dipVec_local, dipVec, 3, mpi_real, mpi_sum, &
1317 +            mpi_comm_world, mpi_err)
1318   #else
1319 +       call mpi_allreduce(pChg_local, pChg, 1, mpi_double_precision, mpi_sum, &
1320 +            mpi_comm_world, mpi_err)
1321 +       call mpi_allreduce(nChg_local, nChg, 1, mpi_double_precision, mpi_sum, &
1322 +            mpi_comm_world, mpi_err)
1323 +       call mpi_allreduce(pChgCount_local, pChgCount, 1, mpi_integer,&
1324 +            mpi_sum, mpi_comm_world, mpi_err)
1325 +       call mpi_allreduce(nChgCount_local, nChgCount, 1, mpi_integer,&
1326 +            mpi_sum, mpi_comm_world, mpi_err)
1327 +       call mpi_allreduce(pChgPos_local, pChgPos, 3, mpi_double_precision, &
1328 +            mpi_sum, mpi_comm_world, mpi_err)
1329 +       call mpi_allreduce(nChgPos_local, nChgPos, 3, mpi_double_precision, &
1330 +            mpi_sum, mpi_comm_world, mpi_err)
1331 +       call mpi_allreduce(dipVec_local, dipVec, 3, mpi_double_precision, &
1332 +            mpi_sum, mpi_comm_world, mpi_err)
1333 + #endif
1334 +
1335 +    endif
1336 +
1337 + #else
1338      
1339      if (do_stress) then
1340         tau = tau_Temp
# Line 1225 | Line 1342 | contains
1342      endif
1343      
1344   #endif
1345 <    
1345 >
1346 >    if (do_box_dipole) then
1347 >       ! first load the accumulated dipole moment (if dipoles were present)
1348 >       boxDipole(1) = dipVec(1)
1349 >       boxDipole(2) = dipVec(2)
1350 >       boxDipole(3) = dipVec(3)
1351 >
1352 >       ! now include the dipole moment due to charges
1353 >       ! use the lesser of the positive and negative charge totals
1354 >       if (nChg .le. pChg) then
1355 >          chg_value = nChg
1356 >       else
1357 >          chg_value = pChg
1358 >       endif
1359 >      
1360 >       ! find the average positions
1361 >       if (pChgCount .gt. 0 .and. nChgCount .gt. 0) then
1362 >          pChgPos = pChgPos / pChgCount
1363 >          nChgPos = nChgPos / nChgCount
1364 >       endif
1365 >
1366 >       ! dipole is from the negative to the positive (physics notation)
1367 >       chgVec(1) = pChgPos(1) - nChgPos(1)
1368 >       chgVec(2) = pChgPos(2) - nChgPos(2)
1369 >       chgVec(3) = pChgPos(3) - nChgPos(3)
1370 >
1371 >       boxDipole(1) = boxDipole(1) + chgVec(1) * chg_value
1372 >       boxDipole(2) = boxDipole(2) + chgVec(2) * chg_value
1373 >       boxDipole(3) = boxDipole(3) + chgVec(3) * chg_value
1374 >
1375 >    endif
1376 >
1377    end subroutine do_force_loop
1378  
1379    subroutine do_pair(i, j, rijsq, d, sw, do_pot, &
# Line 1248 | Line 1396 | contains
1396      real ( kind = dp ), intent(inout) :: d_grp(3)
1397      real ( kind = dp ), intent(inout) :: rCut
1398      real ( kind = dp ) :: r
1399 +    real ( kind = dp ) :: a_k, b_k, c_k, d_k, dx
1400      integer :: me_i, me_j
1401 +    integer :: k
1402  
1403      integer :: iHash
1404  
1405      r = sqrt(rijsq)
1406 <    vpair = 0.0d0
1407 <    fpair(1:3) = 0.0d0
1406 >    
1407 >    vpair = 0.0_dp
1408 >    fpair(1:3) = 0.0_dp
1409  
1410   #ifdef IS_MPI
1411      me_i = atid_row(i)
# Line 1292 | Line 1443 | contains
1443      endif
1444      
1445      if ( iand(iHash, GAYBERNE_LJ).ne.0 ) then
1446 <       call do_gb_lj_pair(i, j, d, r, rijsq, rcut, sw, vpair, fpair, &
1446 >       call do_gb_pair(i, j, d, r, rijsq, sw, vpair, fpair, &
1447              pot(VDW_POT), A, f, t, do_pot)
1448      endif
1449      
# Line 1315 | Line 1466 | contains
1466         call do_SC_pair(i, j, d, r, rijsq, rcut, sw, vpair, fpair, &
1467              pot(METALLIC_POT), f, do_pot)
1468      endif
1318
1319    
1469      
1470    end subroutine do_pair
1471  
# Line 1339 | Line 1488 | contains
1488      integer :: me_i, me_j, iHash
1489  
1490      r = sqrt(rijsq)
1491 <
1491 >    
1492   #ifdef IS_MPI  
1493      me_i = atid_row(i)
1494      me_j = atid_col(j)  
# Line 1371 | Line 1520 | contains
1520      if (FF_uses_SC .and. SIM_uses_SC) then
1521         call calc_SC_preforce_Frho(nlocal,pot(METALLIC_POT))
1522      endif
1374
1375
1523    end subroutine do_preforce
1524  
1525  
# Line 1384 | Line 1531 | contains
1531      real( kind = dp ) :: d(3), scaled(3)
1532      integer i
1533  
1534 <    d(1:3) = q_j(1:3) - q_i(1:3)
1534 >    d(1) = q_j(1) - q_i(1)
1535 >    d(2) = q_j(2) - q_i(2)
1536 >    d(3) = q_j(3) - q_i(3)
1537  
1538      ! Wrap back into periodic box if necessary
1539      if ( SIM_uses_PBC ) then
1540  
1541         if( .not.boxIsOrthorhombic ) then
1542            ! calc the scaled coordinates.
1543 +          ! scaled = matmul(HmatInv, d)
1544  
1545 <          scaled = matmul(HmatInv, d)
1546 <
1545 >          scaled(1) = HmatInv(1,1)*d(1) + HmatInv(1,2)*d(2) + HmatInv(1,3)*d(3)
1546 >          scaled(2) = HmatInv(2,1)*d(1) + HmatInv(2,2)*d(2) + HmatInv(2,3)*d(3)
1547 >          scaled(3) = HmatInv(3,1)*d(1) + HmatInv(3,2)*d(2) + HmatInv(3,3)*d(3)
1548 >          
1549            ! wrap the scaled coordinates
1550  
1551 <          scaled = scaled  - anint(scaled)
1552 <
1551 >          scaled(1) = scaled(1) - anint(scaled(1), kind=dp)
1552 >          scaled(2) = scaled(2) - anint(scaled(2), kind=dp)
1553 >          scaled(3) = scaled(3) - anint(scaled(3), kind=dp)
1554  
1555            ! calc the wrapped real coordinates from the wrapped scaled
1556            ! coordinates
1557 +          ! d = matmul(Hmat,scaled)
1558 +          d(1)= Hmat(1,1)*scaled(1) + Hmat(1,2)*scaled(2) + Hmat(1,3)*scaled(3)
1559 +          d(2)= Hmat(2,1)*scaled(1) + Hmat(2,2)*scaled(2) + Hmat(2,3)*scaled(3)
1560 +          d(3)= Hmat(3,1)*scaled(1) + Hmat(3,2)*scaled(2) + Hmat(3,3)*scaled(3)
1561  
1405          d = matmul(Hmat,scaled)
1406
1562         else
1563            ! calc the scaled coordinates.
1564  
1565 <          do i = 1, 3
1566 <             scaled(i) = d(i) * HmatInv(i,i)
1565 >          scaled(1) = d(1) * HmatInv(1,1)
1566 >          scaled(2) = d(2) * HmatInv(2,2)
1567 >          scaled(3) = d(3) * HmatInv(3,3)
1568 >          
1569 >          ! wrap the scaled coordinates
1570 >          
1571 >          scaled(1) = scaled(1) - anint(scaled(1), kind=dp)
1572 >          scaled(2) = scaled(2) - anint(scaled(2), kind=dp)
1573 >          scaled(3) = scaled(3) - anint(scaled(3), kind=dp)
1574  
1575 <             ! wrap the scaled coordinates
1575 >          ! calc the wrapped real coordinates from the wrapped scaled
1576 >          ! coordinates
1577  
1578 <             scaled(i) = scaled(i) - anint(scaled(i))
1578 >          d(1) = scaled(1)*Hmat(1,1)
1579 >          d(2) = scaled(2)*Hmat(2,2)
1580 >          d(3) = scaled(3)*Hmat(3,3)
1581  
1417             ! calc the wrapped real coordinates from the wrapped scaled
1418             ! coordinates
1419
1420             d(i) = scaled(i)*Hmat(i,i)
1421          enddo
1582         endif
1583  
1584      endif
1585  
1586 <    r_sq = dot_product(d,d)
1586 >    r_sq = d(1)*d(1) + d(2)*d(2) + d(3)*d(3)
1587  
1588    end subroutine get_interatomic_vector
1589  

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