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!! @author Charles F. Vardeman II |
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!! @author Matthew Meineke |
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!! @version $Id: doForces.F90,v 1.35 2005-09-01 22:56:20 gezelter Exp $, $Date: 2005-09-01 22:56:20 $, $Name: not supported by cvs2svn $, $Revision: 1.35 $ |
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!! @version $Id: doForces.F90,v 1.42 2005-09-15 00:13:14 chrisfen Exp $, $Date: 2005-09-15 00:13:14 $, $Name: not supported by cvs2svn $, $Revision: 1.42 $ |
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module doForces |
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use lj |
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use sticky |
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use electrostatic_module |
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use reaction_field |
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use reaction_field_module |
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use gb_pair |
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use shapes |
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use vector_class |
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#define __FORTRAN90 |
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#include "UseTheForce/fSwitchingFunction.h" |
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#include "UseTheForce/fCutoffPolicy.h" |
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#include "UseTheForce/fCoulombicCorrection.h" |
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#include "UseTheForce/DarkSide/fInteractionMap.h" |
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type(gtypeCutoffs), dimension(:,:), allocatable :: gtypeCutoffMap |
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integer, save :: cutoffPolicy = TRADITIONAL_CUTOFF_POLICY |
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integer, save :: coulombicCorrection = NONE |
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real(kind=dp),save :: defaultRcut, defaultRsw, defaultRlist |
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real(kind=dp),save :: rcuti |
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contains |
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logical :: i_is_GB |
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logical :: i_is_EAM |
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logical :: i_is_Shape |
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logical :: GtypeFound |
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integer :: myStatus, nAtypes, i, j, istart, iend, jstart, jend |
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integer :: n_in_i, me_i, ia, g, atom1, nGroupTypes |
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integer :: nGroupsInRow |
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real(kind=dp):: thisSigma, bigSigma, thisRcut, tol, skin |
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real(kind=dp) :: biggestAtypeCutoff |
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return |
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endif |
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endif |
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#ifdef IS_MPI |
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nGroupsInRow = getNgroupsInRow(plan_group_row) |
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#endif |
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nAtypes = getSize(atypes) |
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do i = 1, nAtypes |
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#endif |
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!! allocate the groupToGtype and gtypeMaxCutoff here. |
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if(.not.allocated(groupToGtype)) then |
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allocate(groupToGtype(iend)) |
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allocate(groupMaxCutoff(iend)) |
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allocate(gtypeMaxCutoff(iend)) |
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endif |
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!! first we do a single loop over the cutoff groups to find the |
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!! largest cutoff for any atypes present in this group. We also |
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!! create gtypes at this point. |
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#endif |
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if (atypeMaxCutoff(me_i).gt.groupMaxCutoff(i)) then |
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groupMaxCutoff(i)=atypeMaxCutoff(me_i) |
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endif |
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endif |
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enddo |
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if (nGroupTypes.eq.0) then |
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nGroupTypes = nGroupTypes + 1 |
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gtypeMaxCutoff(nGroupTypes) = groupMaxCutoff(i) |
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groupToGtype(i) = nGroupTypes |
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else |
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GtypeFound = .false. |
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do g = 1, nGroupTypes |
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if ( abs(groupMaxCutoff(i) - gtypeMaxCutoff(g)).gt.tol) then |
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nGroupTypes = nGroupTypes + 1 |
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gtypeMaxCutoff(nGroupTypes) = groupMaxCutoff(i) |
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groupToGtype(i) = nGroupTypes |
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else |
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if ( abs(groupMaxCutoff(i) - gtypeMaxCutoff(g)).lt.tol) then |
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groupToGtype(i) = g |
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GtypeFound = .true. |
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endif |
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enddo |
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endif |
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enddo |
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if (.not.GtypeFound) then |
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nGroupTypes = nGroupTypes + 1 |
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gtypeMaxCutoff(nGroupTypes) = groupMaxCutoff(i) |
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groupToGtype(i) = nGroupTypes |
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endif |
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endif |
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enddo |
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!! allocate the gtypeCutoffMap here. |
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allocate(gtypeCutoffMap(nGroupTypes,nGroupTypes)) |
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!! then we do a double loop over all the group TYPES to find the cutoff |
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!! map between groups of two types |
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gtypeCutoffMap(i,j)%rcutsq = thisRcut*thisRcut |
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skin = defaultRlist - defaultRcut |
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gtypeCutoffMap(i,j)%rlistsq = (thisRcut + skin)**2 |
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enddo |
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enddo |
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haveGtypeCutoffMap = .true. |
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end subroutine createGtypeCutoffMap |
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subroutine setDefaultCutoffs(defRcut, defRsw, defRlist, cutPolicy) |
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real(kind=dp),intent(in) :: defRcut, defRsw, defRlist |
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integer, intent(in) :: cutPolicy |
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|
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defaultRcut = defRcut |
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defaultRsw = defRsw |
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defaultRlist = defRlist |
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cutoffPolicy = cutPolicy |
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end subroutine setDefaultCutoffs |
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|
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subroutine setCutoffPolicy(cutPolicy) |
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end subroutine createGtypeCutoffMap |
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subroutine setDefaultCutoffs(defRcut, defRsw, defRlist, cutPolicy) |
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real(kind=dp),intent(in) :: defRcut, defRsw, defRlist |
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integer, intent(in) :: cutPolicy |
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|
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defaultRcut = defRcut |
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defaultRsw = defRsw |
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defaultRlist = defRlist |
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cutoffPolicy = cutPolicy |
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call createGtypeCutoffMap() |
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rcuti = 1.0_dp / defaultRcut |
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end subroutine setDefaultCutoffs |
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subroutine setCutoffPolicy(cutPolicy) |
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integer, intent(in) :: cutPolicy |
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cutoffPolicy = cutPolicy |
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call createGtypeCutoffMap() |
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end subroutine setCutoffPolicy |
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subroutine setSimVariables() |
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SIM_uses_DirectionalAtoms = SimUsesDirectionalAtoms() |
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SIM_uses_EAM = SimUsesEAM() |
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SIM_uses_RF = SimUsesRF() |
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SIM_requires_postpair_calc = SimRequiresPostpairCalc() |
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SIM_requires_prepair_calc = SimRequiresPrepairCalc() |
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SIM_uses_PBC = SimUsesPBC() |
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SIM_uses_RF = SimUsesRF() |
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haveSIMvariables = .true. |
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call setSimVariables() |
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endif |
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if (.not. haveRlist) then |
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write(default_error, *) 'rList has not been set in doForces!' |
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error = -1 |
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return |
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endif |
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! if (.not. haveRlist) then |
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! write(default_error, *) 'rList has not been set in doForces!' |
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! error = -1 |
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! return |
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! endif |
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if (.not. haveNeighborList) then |
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write(default_error, *) 'neighbor list has not been initialized in doForces!' |
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end subroutine doReadyCheck |
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subroutine init_FF(use_RF, use_UW, use_DW, thisStat) |
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subroutine init_FF(use_RF, correctionMethod, dampingAlpha, thisStat) |
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logical, intent(in) :: use_RF |
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logical, intent(in) :: use_UW |
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logical, intent(in) :: use_DW |
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integer, intent(in) :: correctionMethod |
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real(kind=dp), intent(in) :: dampingAlpha |
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integer, intent(out) :: thisStat |
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integer :: my_status, nMatches |
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integer :: corrMethod |
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integer, pointer :: MatchList(:) => null() |
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real(kind=dp) :: rcut, rrf, rt, dielect |
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FF_uses_RF = use_RF |
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!! set the electrostatic correction method |
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if (use_UW) then |
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corrMethod = 1 |
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elseif (use_DW) then |
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corrMethod = 2 |
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else |
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select case(coulombicCorrection) |
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case(NONE) |
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corrMethod = 0 |
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endif |
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case(UNDAMPED_WOLF) |
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corrMethod = 1 |
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case(WOLF) |
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corrMethod = 2 |
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case (REACTION_FIELD) |
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corrMethod = 3 |
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case default |
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call handleError("init_FF", "Unknown Coulombic Correction Method") |
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return |
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end select |
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|
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!! init_FF is called *after* all of the atom types have been |
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!! defined in atype_module using the new_atype subroutine. |
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!! |
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call initialize_rf(dielect) |
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endif |
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else |
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if (FF_uses_RF) then |
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if ((corrMethod == 3) .or. FF_uses_RF) then |
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write(default_error,*) 'Using Reaction Field with no dipoles? Huh?' |
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thisStat = -1 |
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haveSaneForceField = .false. |
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if (FF_RequiresPostpairCalc() .and. SIM_requires_postpair_calc) then |
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if (FF_uses_RF .and. SIM_uses_RF) then |
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if ((FF_uses_RF .and. SIM_uses_RF) .or. (corrMethod == 3)) then |
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#ifdef IS_MPI |
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call scatter(rf_Row,rf,plan_atom_row_3d) |
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real ( kind = dp ), intent(inout) :: rijsq |
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real ( kind = dp ) :: r |
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real ( kind = dp ), intent(inout) :: d(3) |
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real ( kind = dp ) :: ebalance |
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integer :: me_i, me_j |
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integer :: iHash |
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if ( iand(iHash, ELECTROSTATIC_PAIR).ne.0 ) then |
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call doElectrostaticPair(i, j, d, r, rijsq, sw, vpair, fpair, & |
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pot, eFrame, f, t, do_pot, corrMethod) |
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pot, eFrame, f, t, do_pot, corrMethod, rcuti) |
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if (FF_uses_RF .and. SIM_uses_RF) then |
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if ((FF_uses_RF .and. SIM_uses_RF) .or. (corrMethod == 3)) then |
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! CHECK ME (RF needs to know about all electrostatic types) |
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call accumulate_rf(i, j, r, eFrame, sw) |
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integer :: me_i, me_j, iHash |
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r = sqrt(rijsq) |
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|
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#ifdef IS_MPI |
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me_i = atid_row(i) |
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me_j = atid_col(j) |
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function FF_RequiresPostpairCalc() result(doesit) |
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logical :: doesit |
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doesit = FF_uses_RF |
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if (corrMethod == 3) doesit = .true. |
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end function FF_RequiresPostpairCalc |
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#ifdef PROFILE |
