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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 1.33 2005-08-30 18:23:29 chrisfen Exp $, $Date: 2005-08-30 18:23:29 $, $Name: not supported by cvs2svn $, $Revision: 1.33 $ |
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!! @version $Id: doForces.F90,v 1.34 2005-09-01 20:17:55 gezelter Exp $, $Date: 2005-09-01 20:17:55 $, $Name: not supported by cvs2svn $, $Revision: 1.34 $ |
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module doForces |
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logical, save :: haveSaneForceField = .false. |
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logical, save :: haveInteractionHash = .false. |
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logical, save :: haveGtypeCutoffMap = .false. |
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logical, save :: haveRlist = .false. |
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logical, save :: FF_uses_DirectionalAtoms |
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logical, save :: FF_uses_Dipoles |
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logical :: i_is_Shape |
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integer :: myStatus, nAtypes, i, j, istart, iend, jstart, jend |
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integer :: n_in_i |
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real(kind=dp):: thisSigma, bigSigma, thisRcut |
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integer :: n_in_i, me_i, ia, g, atom1, nGroupTypes |
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real(kind=dp):: thisSigma, bigSigma, thisRcut, tol, skin |
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real(kind=dp) :: biggestAtypeCutoff |
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stat = 0 |
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endif |
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endif |
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enddo |
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nGroupTypes = 0 |
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istart = 1 |
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#ifdef IS_MPI |
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iend = nGroupsInRow |
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#else |
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iend = nGroups |
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#endif |
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outer: do i = istart, iend |
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!! allocate the groupToGtype and gtypeMaxCutoff here. |
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!! first we do a single loop over the cutoff groups to find the largest cutoff for any atypes |
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!! present in this group. We also create gtypes at this point. |
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tol = 1.0d-6 |
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do i = istart, iend |
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n_in_i = groupStartRow(i+1) - groupStartRow(i) |
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groupMaxCutoff(i) = 0.0_dp |
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do ia = groupStartRow(i), groupStartRow(i+1)-1 |
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atom1 = groupListRow(ia) |
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#ifdef IS_MPI |
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jstart = 1 |
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jend = nGroupsInCol |
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me_i = atid_row(atom1) |
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#else |
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jstart = i+1 |
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jend = nGroups |
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#endif |
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enddo outer |
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me_i = atid(atom1) |
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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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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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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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groupToGtype(i) = g |
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endif |
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enddo |
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endif |
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enddo |
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haveGtypeCutoffMap = .true. |
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!! allocate the gtypeCutoffMap here. |
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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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do i = 1, nGroupTypes |
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do j = 1, nGroupTypes |
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select case(cutoffPolicy) |
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case(TRADITIONAL_CUTOFF_POLICY) |
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thisRcut = maxval(gtypeMaxCutoff) |
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case(MIX_CUTOFF_POLICY) |
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thisRcut = 0.5_dp * (gtypeMaxCutoff(i) + gtypeMaxCutoff(j)) |
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case(MAX_CUTOFF_POLICY) |
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thisRcut = max(gtypeMaxCutoff(i), gtypeMaxCutoff(j)) |
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case default |
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call handleError("createGtypeCutoffMap", "Unknown Cutoff Policy") |
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return |
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end select |
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gtypeCutoffMap(i,j)%rcut = thisRcut |
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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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end subroutine doReadyCheck |
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subroutine init_FF(use_RF_c, use_UW_c, use_DW_c, thisStat) |
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subroutine init_FF(use_RF, use_UW, use_DW, thisStat) |
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logical, intent(in) :: use_RF_c |
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logical, intent(in) :: use_UW_c |
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logical, intent(in) :: use_DW_c |
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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(out) :: thisStat |
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integer :: my_status, nMatches |
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integer :: corrMethod |
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thisStat = 0 |
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!! Fortran's version of a cast: |
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FF_uses_RF = use_RF_c |
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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_c .eq. .true.) then |
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if (use_UW) then |
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corrMethod = 1 |
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elseif (use_DW_c .eq. .true.) then |
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elseif (use_DW) then |
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corrMethod = 2 |
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else |
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corrMethod = 0 |
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q_group(:,j), d_grp, rgrpsq) |
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#endif |
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if (rgrpsq < InteractionHash(me_i,me_j)%rListsq) then |
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if (rgrpsq < gtypeCutoffMap(groupToGtype(i),groupToGtype(j))%rListsq) then |
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if (update_nlist) then |
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nlist = nlist + 1 |
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