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mmeineke |
377 |
!! do_Forces.F90 |
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!! module do_Forces |
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!! Calculates Long Range forces. |
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!! @author Charles F. Vardeman II |
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!! @author Matthew Meineke |
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chuckv |
694 |
!! @version $Id: do_Forces.F90,v 1.29 2003-08-13 21:20:20 chuckv Exp $, $Date: 2003-08-13 21:20:20 $, $Name: not supported by cvs2svn $, $Revision: 1.29 $ |
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mmeineke |
377 |
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module do_Forces |
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use force_globals |
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use simulation |
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use definitions |
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use atype_module |
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use neighborLists |
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use lj |
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use sticky_pair |
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use dipole_dipole |
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use reaction_field |
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use gb_pair |
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mmeineke |
626 |
use vector_class |
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chuckv |
650 |
use eam |
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chuckv |
657 |
use status |
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mmeineke |
377 |
#ifdef IS_MPI |
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use mpiSimulation |
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#endif |
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implicit none |
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PRIVATE |
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#define __FORTRAN90 |
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#include "fForceField.h" |
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mmeineke |
626 |
logical, save :: do_forces_initialized = .false., haveRlist = .false. |
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logical, save :: havePolicies = .false. |
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mmeineke |
377 |
logical, save :: FF_uses_LJ |
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logical, save :: FF_uses_sticky |
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logical, save :: FF_uses_dipoles |
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logical, save :: FF_uses_RF |
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logical, save :: FF_uses_GB |
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logical, save :: FF_uses_EAM |
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mmeineke |
626 |
real(kind=dp), save :: rlist, rlistsq |
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mmeineke |
377 |
public :: init_FF |
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public :: do_force_loop |
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mmeineke |
626 |
public :: setRlistDF |
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mmeineke |
377 |
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chuckv |
694 |
#ifdef PROFILE |
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real(kind = dp) :: forceTime |
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real(kind = dp) :: forceTimeInitial, forceTimeFinal |
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real(kind = dp) :: globalForceTime |
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real(kind = dp) :: maxForceTime |
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integer, save :: nloops = 0 |
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#endif |
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mmeineke |
377 |
contains |
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mmeineke |
626 |
subroutine setRlistDF( this_rlist ) |
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real(kind=dp) :: this_rlist |
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rlist = this_rlist |
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rlistsq = rlist * rlist |
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haveRlist = .true. |
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if( havePolicies ) do_forces_initialized = .true. |
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end subroutine setRlistDF |
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mmeineke |
377 |
subroutine init_FF(LJMIXPOLICY, use_RF_c, thisStat) |
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integer, intent(in) :: LJMIXPOLICY |
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logical, intent(in) :: use_RF_c |
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integer, intent(out) :: thisStat |
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integer :: my_status, nMatches |
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integer, pointer :: MatchList(:) => null() |
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real(kind=dp) :: rcut, rrf, rt, dielect |
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!! assume things are copacetic, unless they aren't |
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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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!! 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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!! this will scan through the known atypes and figure out what |
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!! interactions are used by the force field. |
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FF_uses_LJ = .false. |
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FF_uses_sticky = .false. |
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FF_uses_dipoles = .false. |
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FF_uses_GB = .false. |
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FF_uses_EAM = .false. |
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call getMatchingElementList(atypes, "is_LJ", .true., nMatches, MatchList) |
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if (nMatches .gt. 0) FF_uses_LJ = .true. |
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call getMatchingElementList(atypes, "is_DP", .true., nMatches, MatchList) |
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if (nMatches .gt. 0) FF_uses_dipoles = .true. |
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call getMatchingElementList(atypes, "is_Sticky", .true., nMatches, & |
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MatchList) |
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if (nMatches .gt. 0) FF_uses_Sticky = .true. |
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call getMatchingElementList(atypes, "is_GB", .true., nMatches, MatchList) |
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if (nMatches .gt. 0) FF_uses_GB = .true. |
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call getMatchingElementList(atypes, "is_EAM", .true., nMatches, MatchList) |
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if (nMatches .gt. 0) FF_uses_EAM = .true. |
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!! check to make sure the FF_uses_RF setting makes sense |
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if (FF_uses_dipoles) then |
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if (FF_uses_RF) then |
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dielect = getDielect() |
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mmeineke |
626 |
call initialize_rf(dielect) |
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mmeineke |
377 |
endif |
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else |
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if (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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return |
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endif |
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mmeineke |
626 |
endif |
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mmeineke |
377 |
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if (FF_uses_LJ) then |
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select case (LJMIXPOLICY) |
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case (LB_MIXING_RULE) |
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mmeineke |
626 |
call init_lj_FF(LB_MIXING_RULE, my_status) |
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mmeineke |
377 |
case (EXPLICIT_MIXING_RULE) |
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mmeineke |
626 |
call init_lj_FF(EXPLICIT_MIXING_RULE, my_status) |
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mmeineke |
377 |
case default |
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write(default_error,*) 'unknown LJ Mixing Policy!' |
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thisStat = -1 |
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return |
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end select |
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if (my_status /= 0) then |
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thisStat = -1 |
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return |
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end if |
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endif |
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if (FF_uses_sticky) then |
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call check_sticky_FF(my_status) |
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if (my_status /= 0) then |
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thisStat = -1 |
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return |
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end if |
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endif |
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chuckv |
657 |
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if (FF_uses_EAM) then |
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call init_EAM_FF(my_status) |
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if (my_status /= 0) then |
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thisStat = -1 |
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return |
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end if |
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endif |
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mmeineke |
377 |
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if (FF_uses_GB) then |
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call check_gb_pair_FF(my_status) |
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if (my_status .ne. 0) then |
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thisStat = -1 |
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return |
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endif |
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endif |
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if (FF_uses_GB .and. FF_uses_LJ) then |
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endif |
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chuckv |
480 |
if (.not. do_forces_initialized) then |
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!! Create neighbor lists |
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call expandNeighborList(getNlocal(), my_status) |
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if (my_Status /= 0) then |
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write(default_error,*) "SimSetup: ExpandNeighborList returned error." |
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thisStat = -1 |
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return |
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endif |
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endif |
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chuckv |
657 |
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mmeineke |
377 |
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mmeineke |
626 |
havePolicies = .true. |
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if( haveRlist ) do_forces_initialized = .true. |
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chuckv |
657 |
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mmeineke |
377 |
end subroutine init_FF |
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!! Does force loop over i,j pairs. Calls do_pair to calculates forces. |
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!-------------------------------------------------------------> |
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subroutine do_force_loop(q, A, u_l, f, t, tau, pot, do_pot_c, do_stress_c, & |
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error) |
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!! Position array provided by C, dimensioned by getNlocal |
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real ( kind = dp ), dimension(3,getNlocal()) :: q |
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!! Rotation Matrix for each long range particle in simulation. |
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real( kind = dp), dimension(9,getNlocal()) :: A |
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!! Unit vectors for dipoles (lab frame) |
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real( kind = dp ), dimension(3,getNlocal()) :: u_l |
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!! Force array provided by C, dimensioned by getNlocal |
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real ( kind = dp ), dimension(3,getNlocal()) :: f |
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!! Torsion array provided by C, dimensioned by getNlocal |
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real( kind = dp ), dimension(3,getNlocal()) :: t |
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!! Stress Tensor |
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real( kind = dp), dimension(9) :: tau |
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real ( kind = dp ) :: pot |
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logical ( kind = 2) :: do_pot_c, do_stress_c |
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logical :: do_pot |
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logical :: do_stress |
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chuckv |
439 |
#ifdef IS_MPI |
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chuckv |
441 |
real( kind = DP ) :: pot_local |
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mmeineke |
377 |
integer :: nrow |
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integer :: ncol |
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chuckv |
694 |
integer :: nprocs |
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mmeineke |
377 |
#endif |
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integer :: nlocal |
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integer :: natoms |
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logical :: update_nlist |
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integer :: i, j, jbeg, jend, jnab |
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integer :: nlist |
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mmeineke |
626 |
real( kind = DP ) :: rijsq |
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mmeineke |
377 |
real(kind=dp),dimension(3) :: d |
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real(kind=dp) :: rfpot, mu_i, virial |
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integer :: me_i |
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logical :: is_dp_i |
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integer :: neighborListSize |
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integer :: listerror, error |
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integer :: localError |
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mmeineke |
626 |
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real(kind=dp) :: listSkin = 1.0 |
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mmeineke |
619 |
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mmeineke |
377 |
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!! initialize local variables |
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#ifdef IS_MPI |
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chuckv |
441 |
pot_local = 0.0_dp |
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mmeineke |
377 |
nlocal = getNlocal() |
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nrow = getNrow(plan_row) |
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ncol = getNcol(plan_col) |
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#else |
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nlocal = getNlocal() |
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natoms = nlocal |
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#endif |
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chuckv |
669 |
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mmeineke |
377 |
call check_initialization(localError) |
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if ( localError .ne. 0 ) then |
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chuckv |
657 |
call handleError("do_force_loop","Not Initialized") |
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mmeineke |
377 |
error = -1 |
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return |
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end if |
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call zero_work_arrays() |
| 255 |
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do_pot = do_pot_c |
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do_stress = do_stress_c |
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chuckv |
669 |
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mmeineke |
377 |
! Gather all information needed by all force loops: |
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#ifdef IS_MPI |
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| 264 |
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call gather(q,q_Row,plan_row3d) |
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call gather(q,q_Col,plan_col3d) |
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| 267 |
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if (FF_UsesDirectionalAtoms() .and. SimUsesDirectionalAtoms()) then |
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call gather(u_l,u_l_Row,plan_row3d) |
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call gather(u_l,u_l_Col,plan_col3d) |
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call gather(A,A_Row,plan_row_rotation) |
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call gather(A,A_Col,plan_col_rotation) |
| 273 |
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endif |
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#endif |
| 276 |
chuckv |
694 |
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!! Begin force loop timing: |
| 278 |
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#ifdef PROFILE |
| 279 |
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call cpu_time(forceTimeInitial) |
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nloops = nloops + 1 |
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#endif |
| 282 |
chuckv |
669 |
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| 283 |
mmeineke |
377 |
if (FF_RequiresPrepairCalc() .and. SimRequiresPrepairCalc()) then |
| 284 |
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!! See if we need to update neighbor lists |
| 285 |
mmeineke |
626 |
call checkNeighborList(nlocal, q, listSkin, update_nlist) |
| 286 |
mmeineke |
377 |
!! if_mpi_gather_stuff_for_prepair |
| 287 |
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!! do_prepair_loop_if_needed |
| 288 |
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!! if_mpi_scatter_stuff_from_prepair |
| 289 |
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!! if_mpi_gather_stuff_from_prepair_to_main_loop |
| 290 |
chuckv |
673 |
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chuckv |
648 |
!--------------------PREFORCE LOOP----------->>>>>>>>>>>>>>>>>>>>>>>>>>> |
| 292 |
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#ifdef IS_MPI |
| 293 |
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| 294 |
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if (update_nlist) then |
| 295 |
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!! save current configuration, construct neighbor list, |
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!! and calculate forces |
| 298 |
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call saveNeighborList(nlocal, q) |
| 299 |
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| 300 |
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neighborListSize = size(list) |
| 301 |
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nlist = 0 |
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do i = 1, nrow |
| 304 |
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point(i) = nlist + 1 |
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prepair_inner: do j = 1, ncol |
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| 308 |
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if (skipThisPair(i,j)) cycle prepair_inner |
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| 310 |
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call get_interatomic_vector(q_Row(:,i), q_Col(:,j), d, rijsq) |
| 311 |
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| 312 |
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if (rijsq < rlistsq) then |
| 313 |
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| 314 |
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nlist = nlist + 1 |
| 315 |
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| 316 |
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if (nlist > neighborListSize) then |
| 317 |
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call expandNeighborList(nlocal, listerror) |
| 318 |
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if (listerror /= 0) then |
| 319 |
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error = -1 |
| 320 |
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write(DEFAULT_ERROR,*) "ERROR: nlist > list size and max allocations exceeded." |
| 321 |
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return |
| 322 |
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end if |
| 323 |
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neighborListSize = size(list) |
| 324 |
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endif |
| 325 |
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| 326 |
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list(nlist) = j |
| 327 |
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call do_prepair(i, j, rijsq, d, do_pot, do_stress, u_l, A, f, t, pot_local) |
| 328 |
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endif |
| 329 |
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enddo prepair_inner |
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enddo |
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| 332 |
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point(nrow + 1) = nlist + 1 |
| 333 |
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| 334 |
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else !! (of update_check) |
| 335 |
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| 336 |
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! use the list to find the neighbors |
| 337 |
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do i = 1, nrow |
| 338 |
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JBEG = POINT(i) |
| 339 |
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JEND = POINT(i+1) - 1 |
| 340 |
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! check thiat molecule i has neighbors |
| 341 |
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if (jbeg .le. jend) then |
| 342 |
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| 343 |
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do jnab = jbeg, jend |
| 344 |
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j = list(jnab) |
| 345 |
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| 346 |
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call get_interatomic_vector(q_Row(:,i), q_Col(:,j), d, rijsq) |
| 347 |
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call do_prepair(i, j, rijsq, d, do_pot, do_stress, & |
| 348 |
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u_l, A, f, t, pot_local) |
| 349 |
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| 350 |
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enddo |
| 351 |
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endif |
| 352 |
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enddo |
| 353 |
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endif |
| 354 |
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| 355 |
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#else |
| 356 |
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| 357 |
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if (update_nlist) then |
| 358 |
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| 359 |
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! save current configuration, contruct neighbor list, |
| 360 |
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! and calculate forces |
| 361 |
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call saveNeighborList(natoms, q) |
| 362 |
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| 363 |
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neighborListSize = size(list) |
| 364 |
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| 365 |
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nlist = 0 |
| 366 |
chuckv |
673 |
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| 367 |
chuckv |
648 |
do i = 1, natoms-1 |
| 368 |
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point(i) = nlist + 1 |
| 369 |
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| 370 |
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prepair_inner: do j = i+1, natoms |
| 371 |
|
|
|
| 372 |
|
|
if (skipThisPair(i,j)) cycle prepair_inner |
| 373 |
|
|
|
| 374 |
|
|
call get_interatomic_vector(q(:,i), q(:,j), d, rijsq) |
| 375 |
|
|
|
| 376 |
|
|
|
| 377 |
|
|
if (rijsq < rlistsq) then |
| 378 |
chuckv |
673 |
|
| 379 |
|
|
|
| 380 |
chuckv |
648 |
nlist = nlist + 1 |
| 381 |
|
|
|
| 382 |
|
|
if (nlist > neighborListSize) then |
| 383 |
|
|
call expandNeighborList(natoms, listerror) |
| 384 |
|
|
if (listerror /= 0) then |
| 385 |
|
|
error = -1 |
| 386 |
|
|
write(DEFAULT_ERROR,*) "ERROR: nlist > list size and max allocations exceeded." |
| 387 |
|
|
return |
| 388 |
|
|
end if |
| 389 |
|
|
neighborListSize = size(list) |
| 390 |
|
|
endif |
| 391 |
|
|
|
| 392 |
|
|
list(nlist) = j |
| 393 |
|
|
|
| 394 |
|
|
call do_prepair(i, j, rijsq, d, do_pot, do_stress, & |
| 395 |
|
|
u_l, A, f, t, pot) |
| 396 |
|
|
|
| 397 |
|
|
endif |
| 398 |
|
|
enddo prepair_inner |
| 399 |
|
|
enddo |
| 400 |
|
|
|
| 401 |
|
|
point(natoms) = nlist + 1 |
| 402 |
|
|
|
| 403 |
|
|
else !! (update) |
| 404 |
chuckv |
673 |
|
| 405 |
chuckv |
648 |
! use the list to find the neighbors |
| 406 |
|
|
do i = 1, natoms-1 |
| 407 |
|
|
JBEG = POINT(i) |
| 408 |
|
|
JEND = POINT(i+1) - 1 |
| 409 |
|
|
! check thiat molecule i has neighbors |
| 410 |
|
|
if (jbeg .le. jend) then |
| 411 |
|
|
|
| 412 |
|
|
do jnab = jbeg, jend |
| 413 |
|
|
j = list(jnab) |
| 414 |
|
|
|
| 415 |
|
|
call get_interatomic_vector(q(:,i), q(:,j), d, rijsq) |
| 416 |
|
|
call do_prepair(i, j, rijsq, d, do_pot, do_stress, & |
| 417 |
|
|
u_l, A, f, t, pot) |
| 418 |
|
|
|
| 419 |
|
|
enddo |
| 420 |
|
|
endif |
| 421 |
|
|
enddo |
| 422 |
|
|
endif |
| 423 |
|
|
#endif |
| 424 |
|
|
!! Do rest of preforce calculations |
| 425 |
chuckv |
673 |
!! do necessary preforce calculations |
| 426 |
|
|
call do_preforce(nlocal,pot) |
| 427 |
|
|
! we have already updated the neighbor list set it to false... |
| 428 |
|
|
update_nlist = .false. |
| 429 |
mmeineke |
377 |
else |
| 430 |
chuckv |
648 |
!! See if we need to update neighbor lists for non pre-pair |
| 431 |
mmeineke |
626 |
call checkNeighborList(nlocal, q, listSkin, update_nlist) |
| 432 |
mmeineke |
377 |
endif |
| 433 |
chuckv |
648 |
|
| 434 |
|
|
|
| 435 |
|
|
|
| 436 |
|
|
|
| 437 |
|
|
|
| 438 |
|
|
!---------------------------------MAIN Pair LOOP->>>>>>>>>>>>>>>>>>>>>>>>>>>> |
| 439 |
|
|
|
| 440 |
|
|
|
| 441 |
|
|
|
| 442 |
|
|
|
| 443 |
|
|
|
| 444 |
mmeineke |
377 |
#ifdef IS_MPI |
| 445 |
|
|
|
| 446 |
|
|
if (update_nlist) then |
| 447 |
|
|
|
| 448 |
|
|
!! save current configuration, construct neighbor list, |
| 449 |
|
|
!! and calculate forces |
| 450 |
mmeineke |
459 |
call saveNeighborList(nlocal, q) |
| 451 |
mmeineke |
377 |
|
| 452 |
|
|
neighborListSize = size(list) |
| 453 |
|
|
nlist = 0 |
| 454 |
|
|
|
| 455 |
|
|
do i = 1, nrow |
| 456 |
|
|
point(i) = nlist + 1 |
| 457 |
|
|
|
| 458 |
|
|
inner: do j = 1, ncol |
| 459 |
|
|
|
| 460 |
|
|
if (skipThisPair(i,j)) cycle inner |
| 461 |
|
|
|
| 462 |
|
|
call get_interatomic_vector(q_Row(:,i), q_Col(:,j), d, rijsq) |
| 463 |
|
|
|
| 464 |
mmeineke |
626 |
if (rijsq < rlistsq) then |
| 465 |
mmeineke |
377 |
|
| 466 |
|
|
nlist = nlist + 1 |
| 467 |
|
|
|
| 468 |
|
|
if (nlist > neighborListSize) then |
| 469 |
|
|
call expandNeighborList(nlocal, listerror) |
| 470 |
|
|
if (listerror /= 0) then |
| 471 |
|
|
error = -1 |
| 472 |
|
|
write(DEFAULT_ERROR,*) "ERROR: nlist > list size and max allocations exceeded." |
| 473 |
|
|
return |
| 474 |
|
|
end if |
| 475 |
|
|
neighborListSize = size(list) |
| 476 |
|
|
endif |
| 477 |
|
|
|
| 478 |
|
|
list(nlist) = j |
| 479 |
|
|
|
| 480 |
mmeineke |
626 |
call do_pair(i, j, rijsq, d, do_pot, do_stress, & |
| 481 |
|
|
u_l, A, f, t, pot_local) |
| 482 |
|
|
|
| 483 |
mmeineke |
377 |
endif |
| 484 |
|
|
enddo inner |
| 485 |
|
|
enddo |
| 486 |
|
|
|
| 487 |
|
|
point(nrow + 1) = nlist + 1 |
| 488 |
|
|
|
| 489 |
|
|
else !! (of update_check) |
| 490 |
|
|
|
| 491 |
|
|
! use the list to find the neighbors |
| 492 |
|
|
do i = 1, nrow |
| 493 |
|
|
JBEG = POINT(i) |
| 494 |
|
|
JEND = POINT(i+1) - 1 |
| 495 |
|
|
! check thiat molecule i has neighbors |
| 496 |
|
|
if (jbeg .le. jend) then |
| 497 |
|
|
|
| 498 |
|
|
do jnab = jbeg, jend |
| 499 |
|
|
j = list(jnab) |
| 500 |
|
|
|
| 501 |
|
|
call get_interatomic_vector(q_Row(:,i), q_Col(:,j), d, rijsq) |
| 502 |
|
|
call do_pair(i, j, rijsq, d, do_pot, do_stress, & |
| 503 |
chuckv |
441 |
u_l, A, f, t, pot_local) |
| 504 |
mmeineke |
377 |
|
| 505 |
|
|
enddo |
| 506 |
|
|
endif |
| 507 |
|
|
enddo |
| 508 |
|
|
endif |
| 509 |
|
|
|
| 510 |
|
|
#else |
| 511 |
|
|
|
| 512 |
|
|
if (update_nlist) then |
| 513 |
|
|
|
| 514 |
|
|
! save current configuration, contruct neighbor list, |
| 515 |
|
|
! and calculate forces |
| 516 |
mmeineke |
459 |
call saveNeighborList(natoms, q) |
| 517 |
mmeineke |
377 |
|
| 518 |
|
|
neighborListSize = size(list) |
| 519 |
|
|
|
| 520 |
|
|
nlist = 0 |
| 521 |
|
|
|
| 522 |
|
|
do i = 1, natoms-1 |
| 523 |
|
|
point(i) = nlist + 1 |
| 524 |
|
|
|
| 525 |
|
|
inner: do j = i+1, natoms |
| 526 |
|
|
|
| 527 |
chuckv |
388 |
if (skipThisPair(i,j)) cycle inner |
| 528 |
|
|
|
| 529 |
mmeineke |
377 |
call get_interatomic_vector(q(:,i), q(:,j), d, rijsq) |
| 530 |
|
|
|
| 531 |
chuckv |
388 |
|
| 532 |
mmeineke |
626 |
if (rijsq < rlistsq) then |
| 533 |
mmeineke |
377 |
|
| 534 |
|
|
nlist = nlist + 1 |
| 535 |
|
|
|
| 536 |
|
|
if (nlist > neighborListSize) then |
| 537 |
|
|
call expandNeighborList(natoms, listerror) |
| 538 |
|
|
if (listerror /= 0) then |
| 539 |
|
|
error = -1 |
| 540 |
|
|
write(DEFAULT_ERROR,*) "ERROR: nlist > list size and max allocations exceeded." |
| 541 |
|
|
return |
| 542 |
|
|
end if |
| 543 |
|
|
neighborListSize = size(list) |
| 544 |
|
|
endif |
| 545 |
|
|
|
| 546 |
|
|
list(nlist) = j |
| 547 |
|
|
|
| 548 |
mmeineke |
626 |
call do_pair(i, j, rijsq, d, do_pot, do_stress, & |
| 549 |
chuckv |
441 |
u_l, A, f, t, pot) |
| 550 |
mmeineke |
626 |
|
| 551 |
mmeineke |
377 |
endif |
| 552 |
|
|
enddo inner |
| 553 |
|
|
enddo |
| 554 |
|
|
|
| 555 |
|
|
point(natoms) = nlist + 1 |
| 556 |
|
|
|
| 557 |
|
|
else !! (update) |
| 558 |
|
|
|
| 559 |
|
|
! use the list to find the neighbors |
| 560 |
|
|
do i = 1, natoms-1 |
| 561 |
|
|
JBEG = POINT(i) |
| 562 |
|
|
JEND = POINT(i+1) - 1 |
| 563 |
|
|
! check thiat molecule i has neighbors |
| 564 |
|
|
if (jbeg .le. jend) then |
| 565 |
|
|
|
| 566 |
|
|
do jnab = jbeg, jend |
| 567 |
|
|
j = list(jnab) |
| 568 |
|
|
|
| 569 |
|
|
call get_interatomic_vector(q(:,i), q(:,j), d, rijsq) |
| 570 |
|
|
call do_pair(i, j, rijsq, d, do_pot, do_stress, & |
| 571 |
chuckv |
441 |
u_l, A, f, t, pot) |
| 572 |
mmeineke |
377 |
|
| 573 |
|
|
enddo |
| 574 |
|
|
endif |
| 575 |
|
|
enddo |
| 576 |
|
|
endif |
| 577 |
|
|
|
| 578 |
|
|
#endif |
| 579 |
|
|
|
| 580 |
|
|
! phew, done with main loop. |
| 581 |
chuckv |
694 |
|
| 582 |
|
|
!! Do timing |
| 583 |
|
|
#ifdef PROFILE |
| 584 |
|
|
call cpu_time(forceTimeFinal) |
| 585 |
|
|
forceTime = forceTime + forceTimeFinal - forceTimeInitial |
| 586 |
|
|
#endif |
| 587 |
|
|
|
| 588 |
|
|
|
| 589 |
mmeineke |
377 |
#ifdef IS_MPI |
| 590 |
|
|
!!distribute forces |
| 591 |
chuckv |
438 |
|
| 592 |
|
|
f_temp = 0.0_dp |
| 593 |
|
|
call scatter(f_Row,f_temp,plan_row3d) |
| 594 |
|
|
do i = 1,nlocal |
| 595 |
|
|
f(1:3,i) = f(1:3,i) + f_temp(1:3,i) |
| 596 |
|
|
end do |
| 597 |
|
|
|
| 598 |
|
|
f_temp = 0.0_dp |
| 599 |
mmeineke |
377 |
call scatter(f_Col,f_temp,plan_col3d) |
| 600 |
|
|
do i = 1,nlocal |
| 601 |
|
|
f(1:3,i) = f(1:3,i) + f_temp(1:3,i) |
| 602 |
|
|
end do |
| 603 |
|
|
|
| 604 |
|
|
if (FF_UsesDirectionalAtoms() .and. SimUsesDirectionalAtoms()) then |
| 605 |
chuckv |
438 |
t_temp = 0.0_dp |
| 606 |
|
|
call scatter(t_Row,t_temp,plan_row3d) |
| 607 |
|
|
do i = 1,nlocal |
| 608 |
|
|
t(1:3,i) = t(1:3,i) + t_temp(1:3,i) |
| 609 |
|
|
end do |
| 610 |
|
|
t_temp = 0.0_dp |
| 611 |
mmeineke |
377 |
call scatter(t_Col,t_temp,plan_col3d) |
| 612 |
|
|
|
| 613 |
|
|
do i = 1,nlocal |
| 614 |
|
|
t(1:3,i) = t(1:3,i) + t_temp(1:3,i) |
| 615 |
|
|
end do |
| 616 |
|
|
endif |
| 617 |
|
|
|
| 618 |
|
|
if (do_pot) then |
| 619 |
|
|
! scatter/gather pot_row into the members of my column |
| 620 |
|
|
call scatter(pot_Row, pot_Temp, plan_row) |
| 621 |
chuckv |
439 |
|
| 622 |
mmeineke |
377 |
! scatter/gather pot_local into all other procs |
| 623 |
|
|
! add resultant to get total pot |
| 624 |
|
|
do i = 1, nlocal |
| 625 |
|
|
pot_local = pot_local + pot_Temp(i) |
| 626 |
|
|
enddo |
| 627 |
chuckv |
439 |
|
| 628 |
|
|
pot_Temp = 0.0_DP |
| 629 |
mmeineke |
377 |
|
| 630 |
|
|
call scatter(pot_Col, pot_Temp, plan_col) |
| 631 |
|
|
do i = 1, nlocal |
| 632 |
|
|
pot_local = pot_local + pot_Temp(i) |
| 633 |
|
|
enddo |
| 634 |
chuckv |
439 |
|
| 635 |
mmeineke |
377 |
endif |
| 636 |
|
|
#endif |
| 637 |
|
|
|
| 638 |
|
|
if (FF_RequiresPostpairCalc() .and. SimRequiresPostpairCalc()) then |
| 639 |
|
|
|
| 640 |
|
|
if (FF_uses_RF .and. SimUsesRF()) then |
| 641 |
|
|
|
| 642 |
|
|
#ifdef IS_MPI |
| 643 |
|
|
call scatter(rf_Row,rf,plan_row3d) |
| 644 |
|
|
call scatter(rf_Col,rf_Temp,plan_col3d) |
| 645 |
|
|
do i = 1,nlocal |
| 646 |
|
|
rf(1:3,i) = rf(1:3,i) + rf_Temp(1:3,i) |
| 647 |
|
|
end do |
| 648 |
|
|
#endif |
| 649 |
|
|
|
| 650 |
|
|
do i = 1, getNlocal() |
| 651 |
|
|
|
| 652 |
|
|
rfpot = 0.0_DP |
| 653 |
|
|
#ifdef IS_MPI |
| 654 |
|
|
me_i = atid_row(i) |
| 655 |
|
|
#else |
| 656 |
|
|
me_i = atid(i) |
| 657 |
|
|
#endif |
| 658 |
|
|
call getElementProperty(atypes, me_i, "is_DP", is_DP_i) |
| 659 |
|
|
if ( is_DP_i ) then |
| 660 |
|
|
call getElementProperty(atypes, me_i, "dipole_moment", mu_i) |
| 661 |
|
|
!! The reaction field needs to include a self contribution |
| 662 |
|
|
!! to the field: |
| 663 |
|
|
call accumulate_self_rf(i, mu_i, u_l) |
| 664 |
|
|
!! Get the reaction field contribution to the |
| 665 |
|
|
!! potential and torques: |
| 666 |
|
|
call reaction_field_final(i, mu_i, u_l, rfpot, t, do_pot) |
| 667 |
|
|
#ifdef IS_MPI |
| 668 |
|
|
pot_local = pot_local + rfpot |
| 669 |
|
|
#else |
| 670 |
|
|
pot = pot + rfpot |
| 671 |
|
|
|
| 672 |
|
|
#endif |
| 673 |
|
|
endif |
| 674 |
|
|
enddo |
| 675 |
|
|
endif |
| 676 |
|
|
endif |
| 677 |
|
|
|
| 678 |
|
|
|
| 679 |
|
|
#ifdef IS_MPI |
| 680 |
|
|
|
| 681 |
|
|
if (do_pot) then |
| 682 |
chuckv |
441 |
pot = pot + pot_local |
| 683 |
mmeineke |
377 |
!! we assume the c code will do the allreduce to get the total potential |
| 684 |
|
|
!! we could do it right here if we needed to... |
| 685 |
|
|
endif |
| 686 |
|
|
|
| 687 |
|
|
if (do_stress) then |
| 688 |
gezelter |
490 |
call mpi_allreduce(tau_Temp, tau, 9,mpi_double_precision,mpi_sum, & |
| 689 |
mmeineke |
377 |
mpi_comm_world,mpi_err) |
| 690 |
chuckv |
470 |
call mpi_allreduce(virial_Temp, virial,1,mpi_double_precision,mpi_sum, & |
| 691 |
mmeineke |
377 |
mpi_comm_world,mpi_err) |
| 692 |
|
|
endif |
| 693 |
|
|
|
| 694 |
|
|
#else |
| 695 |
|
|
|
| 696 |
|
|
if (do_stress) then |
| 697 |
|
|
tau = tau_Temp |
| 698 |
|
|
virial = virial_Temp |
| 699 |
|
|
endif |
| 700 |
|
|
|
| 701 |
|
|
#endif |
| 702 |
chuckv |
694 |
|
| 703 |
|
|
#ifdef PROFILE |
| 704 |
|
|
if (do_pot) then |
| 705 |
|
|
|
| 706 |
|
|
#ifdef IS_MPI |
| 707 |
|
|
|
| 708 |
|
|
|
| 709 |
|
|
call printCommTime() |
| 710 |
|
|
|
| 711 |
|
|
call mpi_allreduce(forceTime,globalForceTime,1,MPI_DOUBLE_PRECISION, & |
| 712 |
|
|
mpi_sum,mpi_comm_world,mpi_err) |
| 713 |
|
|
|
| 714 |
|
|
call mpi_allreduce(forceTime,maxForceTime,1,MPI_DOUBLE_PRECISION, & |
| 715 |
|
|
MPI_MAX,mpi_comm_world,mpi_err) |
| 716 |
|
|
|
| 717 |
|
|
call mpi_comm_size( MPI_COMM_WORLD, nprocs,mpi_err) |
| 718 |
|
|
|
| 719 |
|
|
if (getMyNode() == 0) then |
| 720 |
|
|
write(*,*) "Total processor time spent in force calculations is: ", globalForceTime |
| 721 |
|
|
write(*,*) "Total Time spent in force loop per processor is: ", globalforceTime/nprocs |
| 722 |
|
|
write(*,*) "Maximum force time on any processor is: ", maxForceTime |
| 723 |
|
|
end if |
| 724 |
|
|
#else |
| 725 |
|
|
write(*,*) "Time spent in force loop is: ", forceTime |
| 726 |
|
|
#endif |
| 727 |
|
|
|
| 728 |
|
|
|
| 729 |
|
|
endif |
| 730 |
|
|
|
| 731 |
|
|
#endif |
| 732 |
|
|
|
| 733 |
|
|
|
| 734 |
|
|
|
| 735 |
mmeineke |
377 |
end subroutine do_force_loop |
| 736 |
|
|
|
| 737 |
chuckv |
441 |
subroutine do_pair(i, j, rijsq, d, do_pot, do_stress, u_l, A, f, t, pot) |
| 738 |
mmeineke |
377 |
|
| 739 |
|
|
real( kind = dp ) :: pot |
| 740 |
chuckv |
460 |
real( kind = dp ), dimension(3,getNlocal()) :: u_l |
| 741 |
|
|
real (kind=dp), dimension(9,getNlocal()) :: A |
| 742 |
|
|
real (kind=dp), dimension(3,getNlocal()) :: f |
| 743 |
|
|
real (kind=dp), dimension(3,getNlocal()) :: t |
| 744 |
mmeineke |
377 |
|
| 745 |
|
|
logical, intent(inout) :: do_pot, do_stress |
| 746 |
|
|
integer, intent(in) :: i, j |
| 747 |
|
|
real ( kind = dp ), intent(inout) :: rijsq |
| 748 |
|
|
real ( kind = dp ) :: r |
| 749 |
|
|
real ( kind = dp ), intent(inout) :: d(3) |
| 750 |
|
|
logical :: is_LJ_i, is_LJ_j |
| 751 |
|
|
logical :: is_DP_i, is_DP_j |
| 752 |
|
|
logical :: is_GB_i, is_GB_j |
| 753 |
chuckv |
648 |
logical :: is_EAM_i,is_EAM_j |
| 754 |
mmeineke |
377 |
logical :: is_Sticky_i, is_Sticky_j |
| 755 |
|
|
integer :: me_i, me_j |
| 756 |
|
|
|
| 757 |
|
|
r = sqrt(rijsq) |
| 758 |
|
|
|
| 759 |
|
|
#ifdef IS_MPI |
| 760 |
gezelter |
490 |
if (tagRow(i) .eq. tagColumn(j)) then |
| 761 |
|
|
write(0,*) 'do_pair is doing', i , j, tagRow(i), tagColumn(j) |
| 762 |
|
|
endif |
| 763 |
mmeineke |
377 |
|
| 764 |
|
|
me_i = atid_row(i) |
| 765 |
|
|
me_j = atid_col(j) |
| 766 |
|
|
|
| 767 |
|
|
#else |
| 768 |
|
|
|
| 769 |
|
|
me_i = atid(i) |
| 770 |
|
|
me_j = atid(j) |
| 771 |
|
|
|
| 772 |
|
|
#endif |
| 773 |
|
|
|
| 774 |
|
|
if (FF_uses_LJ .and. SimUsesLJ()) then |
| 775 |
|
|
call getElementProperty(atypes, me_i, "is_LJ", is_LJ_i) |
| 776 |
|
|
call getElementProperty(atypes, me_j, "is_LJ", is_LJ_j) |
| 777 |
|
|
|
| 778 |
|
|
if ( is_LJ_i .and. is_LJ_j ) & |
| 779 |
|
|
call do_lj_pair(i, j, d, r, rijsq, pot, f, do_pot, do_stress) |
| 780 |
|
|
endif |
| 781 |
|
|
|
| 782 |
|
|
if (FF_uses_dipoles .and. SimUsesDipoles()) then |
| 783 |
|
|
call getElementProperty(atypes, me_i, "is_DP", is_DP_i) |
| 784 |
|
|
call getElementProperty(atypes, me_j, "is_DP", is_DP_j) |
| 785 |
|
|
|
| 786 |
|
|
if ( is_DP_i .and. is_DP_j ) then |
| 787 |
|
|
|
| 788 |
gezelter |
462 |
call do_dipole_pair(i, j, d, r, rijsq, pot, u_l, f, t, & |
| 789 |
mmeineke |
377 |
do_pot, do_stress) |
| 790 |
|
|
if (FF_uses_RF .and. SimUsesRF()) then |
| 791 |
|
|
call accumulate_rf(i, j, r, u_l) |
| 792 |
|
|
call rf_correct_forces(i, j, d, r, u_l, f, do_stress) |
| 793 |
|
|
endif |
| 794 |
|
|
|
| 795 |
|
|
endif |
| 796 |
|
|
endif |
| 797 |
|
|
|
| 798 |
|
|
if (FF_uses_Sticky .and. SimUsesSticky()) then |
| 799 |
|
|
|
| 800 |
|
|
call getElementProperty(atypes, me_i, "is_Sticky", is_Sticky_i) |
| 801 |
|
|
call getElementProperty(atypes, me_j, "is_Sticky", is_Sticky_j) |
| 802 |
chuckv |
388 |
|
| 803 |
mmeineke |
377 |
if ( is_Sticky_i .and. is_Sticky_j ) then |
| 804 |
|
|
call do_sticky_pair(i, j, d, r, rijsq, A, pot, f, t, & |
| 805 |
|
|
do_pot, do_stress) |
| 806 |
|
|
endif |
| 807 |
|
|
endif |
| 808 |
|
|
|
| 809 |
|
|
|
| 810 |
|
|
if (FF_uses_GB .and. SimUsesGB()) then |
| 811 |
|
|
|
| 812 |
|
|
call getElementProperty(atypes, me_i, "is_GB", is_GB_i) |
| 813 |
|
|
call getElementProperty(atypes, me_j, "is_GB", is_GB_j) |
| 814 |
|
|
|
| 815 |
|
|
if ( is_GB_i .and. is_GB_j ) then |
| 816 |
|
|
call do_gb_pair(i, j, d, r, rijsq, u_l, pot, f, t, & |
| 817 |
|
|
do_pot, do_stress) |
| 818 |
|
|
endif |
| 819 |
|
|
endif |
| 820 |
|
|
|
| 821 |
mmeineke |
597 |
|
| 822 |
chuckv |
648 |
|
| 823 |
|
|
if (FF_uses_EAM .and. SimUsesEAM()) then |
| 824 |
|
|
call getElementProperty(atypes, me_i, "is_EAM", is_EAM_i) |
| 825 |
|
|
call getElementProperty(atypes, me_j, "is_EAM", is_EAM_j) |
| 826 |
|
|
|
| 827 |
|
|
if ( is_EAM_i .and. is_EAM_j ) & |
| 828 |
|
|
call do_eam_pair(i, j, d, r, rijsq, pot, f, do_pot, do_stress) |
| 829 |
|
|
endif |
| 830 |
|
|
|
| 831 |
mmeineke |
597 |
|
| 832 |
chuckv |
648 |
|
| 833 |
|
|
|
| 834 |
mmeineke |
377 |
end subroutine do_pair |
| 835 |
|
|
|
| 836 |
|
|
|
| 837 |
chuckv |
631 |
|
| 838 |
chuckv |
648 |
subroutine do_prepair(i, j, rijsq, d, do_pot, do_stress, u_l, A, f, t, pot) |
| 839 |
chuckv |
631 |
real( kind = dp ) :: pot |
| 840 |
|
|
real( kind = dp ), dimension(3,getNlocal()) :: u_l |
| 841 |
|
|
real (kind=dp), dimension(9,getNlocal()) :: A |
| 842 |
|
|
real (kind=dp), dimension(3,getNlocal()) :: f |
| 843 |
|
|
real (kind=dp), dimension(3,getNlocal()) :: t |
| 844 |
|
|
|
| 845 |
|
|
logical, intent(inout) :: do_pot, do_stress |
| 846 |
|
|
integer, intent(in) :: i, j |
| 847 |
|
|
real ( kind = dp ), intent(inout) :: rijsq |
| 848 |
|
|
real ( kind = dp ) :: r |
| 849 |
|
|
real ( kind = dp ), intent(inout) :: d(3) |
| 850 |
|
|
|
| 851 |
|
|
logical :: is_EAM_i, is_EAM_j |
| 852 |
|
|
|
| 853 |
|
|
integer :: me_i, me_j |
| 854 |
|
|
|
| 855 |
|
|
r = sqrt(rijsq) |
| 856 |
|
|
|
| 857 |
chuckv |
669 |
|
| 858 |
chuckv |
631 |
#ifdef IS_MPI |
| 859 |
|
|
if (tagRow(i) .eq. tagColumn(j)) then |
| 860 |
|
|
write(0,*) 'do_pair is doing', i , j, tagRow(i), tagColumn(j) |
| 861 |
|
|
endif |
| 862 |
|
|
|
| 863 |
|
|
me_i = atid_row(i) |
| 864 |
|
|
me_j = atid_col(j) |
| 865 |
|
|
|
| 866 |
|
|
#else |
| 867 |
|
|
|
| 868 |
|
|
me_i = atid(i) |
| 869 |
|
|
me_j = atid(j) |
| 870 |
|
|
|
| 871 |
|
|
#endif |
| 872 |
chuckv |
673 |
|
| 873 |
chuckv |
631 |
if (FF_uses_EAM .and. SimUsesEAM()) then |
| 874 |
|
|
call getElementProperty(atypes, me_i, "is_EAM", is_EAM_i) |
| 875 |
|
|
call getElementProperty(atypes, me_j, "is_EAM", is_EAM_j) |
| 876 |
|
|
|
| 877 |
chuckv |
648 |
if ( is_EAM_i .and. is_EAM_j ) & |
| 878 |
|
|
call calc_EAM_prepair_rho(i, j, d, r, rijsq ) |
| 879 |
chuckv |
631 |
endif |
| 880 |
chuckv |
648 |
|
| 881 |
chuckv |
673 |
end subroutine do_prepair |
| 882 |
chuckv |
648 |
|
| 883 |
|
|
|
| 884 |
|
|
|
| 885 |
chuckv |
673 |
|
| 886 |
chuckv |
648 |
subroutine do_preforce(nlocal,pot) |
| 887 |
|
|
integer :: nlocal |
| 888 |
|
|
real( kind = dp ) :: pot |
| 889 |
|
|
|
| 890 |
chuckv |
669 |
if (FF_uses_EAM .and. SimUsesEAM()) then |
| 891 |
|
|
call calc_EAM_preforce_Frho(nlocal,pot) |
| 892 |
|
|
endif |
| 893 |
chuckv |
648 |
|
| 894 |
|
|
|
| 895 |
chuckv |
631 |
end subroutine do_preforce |
| 896 |
|
|
|
| 897 |
|
|
|
| 898 |
mmeineke |
377 |
subroutine get_interatomic_vector(q_i, q_j, d, r_sq) |
| 899 |
|
|
|
| 900 |
|
|
real (kind = dp), dimension(3) :: q_i |
| 901 |
|
|
real (kind = dp), dimension(3) :: q_j |
| 902 |
|
|
real ( kind = dp ), intent(out) :: r_sq |
| 903 |
gezelter |
571 |
real( kind = dp ) :: d(3), scaled(3) |
| 904 |
|
|
integer i |
| 905 |
|
|
|
| 906 |
chuckv |
482 |
d(1:3) = q_j(1:3) - q_i(1:3) |
| 907 |
gezelter |
571 |
|
| 908 |
mmeineke |
377 |
! Wrap back into periodic box if necessary |
| 909 |
|
|
if ( SimUsesPBC() ) then |
| 910 |
mmeineke |
393 |
|
| 911 |
gezelter |
571 |
if( .not.boxIsOrthorhombic ) then |
| 912 |
|
|
! calc the scaled coordinates. |
| 913 |
|
|
|
| 914 |
mmeineke |
572 |
scaled = matmul(HmatInv, d) |
| 915 |
gezelter |
571 |
|
| 916 |
|
|
! wrap the scaled coordinates |
| 917 |
|
|
|
| 918 |
mmeineke |
572 |
scaled = scaled - anint(scaled) |
| 919 |
|
|
|
| 920 |
gezelter |
571 |
|
| 921 |
|
|
! calc the wrapped real coordinates from the wrapped scaled |
| 922 |
|
|
! coordinates |
| 923 |
|
|
|
| 924 |
mmeineke |
572 |
d = matmul(Hmat,scaled) |
| 925 |
gezelter |
571 |
|
| 926 |
|
|
else |
| 927 |
|
|
! calc the scaled coordinates. |
| 928 |
|
|
|
| 929 |
|
|
do i = 1, 3 |
| 930 |
|
|
scaled(i) = d(i) * HmatInv(i,i) |
| 931 |
|
|
|
| 932 |
|
|
! wrap the scaled coordinates |
| 933 |
|
|
|
| 934 |
|
|
scaled(i) = scaled(i) - anint(scaled(i)) |
| 935 |
|
|
|
| 936 |
|
|
! calc the wrapped real coordinates from the wrapped scaled |
| 937 |
|
|
! coordinates |
| 938 |
|
|
|
| 939 |
|
|
d(i) = scaled(i)*Hmat(i,i) |
| 940 |
|
|
enddo |
| 941 |
|
|
endif |
| 942 |
mmeineke |
393 |
|
| 943 |
mmeineke |
377 |
endif |
| 944 |
gezelter |
571 |
|
| 945 |
mmeineke |
377 |
r_sq = dot_product(d,d) |
| 946 |
gezelter |
571 |
|
| 947 |
mmeineke |
377 |
end subroutine get_interatomic_vector |
| 948 |
gezelter |
571 |
|
| 949 |
mmeineke |
377 |
subroutine check_initialization(error) |
| 950 |
|
|
integer, intent(out) :: error |
| 951 |
|
|
|
| 952 |
|
|
error = 0 |
| 953 |
|
|
! Make sure we are properly initialized. |
| 954 |
|
|
if (.not. do_forces_initialized) then |
| 955 |
chuckv |
657 |
write(*,*) "Forces not initialized" |
| 956 |
mmeineke |
377 |
error = -1 |
| 957 |
|
|
return |
| 958 |
|
|
endif |
| 959 |
|
|
|
| 960 |
|
|
#ifdef IS_MPI |
| 961 |
|
|
if (.not. isMPISimSet()) then |
| 962 |
|
|
write(default_error,*) "ERROR: mpiSimulation has not been initialized!" |
| 963 |
|
|
error = -1 |
| 964 |
|
|
return |
| 965 |
|
|
endif |
| 966 |
|
|
#endif |
| 967 |
|
|
|
| 968 |
|
|
return |
| 969 |
|
|
end subroutine check_initialization |
| 970 |
|
|
|
| 971 |
|
|
|
| 972 |
|
|
subroutine zero_work_arrays() |
| 973 |
|
|
|
| 974 |
|
|
#ifdef IS_MPI |
| 975 |
|
|
|
| 976 |
|
|
q_Row = 0.0_dp |
| 977 |
|
|
q_Col = 0.0_dp |
| 978 |
|
|
|
| 979 |
|
|
u_l_Row = 0.0_dp |
| 980 |
|
|
u_l_Col = 0.0_dp |
| 981 |
|
|
|
| 982 |
|
|
A_Row = 0.0_dp |
| 983 |
|
|
A_Col = 0.0_dp |
| 984 |
|
|
|
| 985 |
|
|
f_Row = 0.0_dp |
| 986 |
|
|
f_Col = 0.0_dp |
| 987 |
|
|
f_Temp = 0.0_dp |
| 988 |
|
|
|
| 989 |
|
|
t_Row = 0.0_dp |
| 990 |
|
|
t_Col = 0.0_dp |
| 991 |
|
|
t_Temp = 0.0_dp |
| 992 |
|
|
|
| 993 |
|
|
pot_Row = 0.0_dp |
| 994 |
|
|
pot_Col = 0.0_dp |
| 995 |
|
|
pot_Temp = 0.0_dp |
| 996 |
|
|
|
| 997 |
|
|
rf_Row = 0.0_dp |
| 998 |
|
|
rf_Col = 0.0_dp |
| 999 |
|
|
rf_Temp = 0.0_dp |
| 1000 |
|
|
|
| 1001 |
|
|
#endif |
| 1002 |
|
|
|
| 1003 |
chuckv |
673 |
|
| 1004 |
|
|
if (FF_uses_EAM .and. SimUsesEAM()) then |
| 1005 |
|
|
call clean_EAM() |
| 1006 |
|
|
endif |
| 1007 |
|
|
|
| 1008 |
|
|
|
| 1009 |
|
|
|
| 1010 |
|
|
|
| 1011 |
|
|
|
| 1012 |
mmeineke |
377 |
rf = 0.0_dp |
| 1013 |
|
|
tau_Temp = 0.0_dp |
| 1014 |
|
|
virial_Temp = 0.0_dp |
| 1015 |
|
|
end subroutine zero_work_arrays |
| 1016 |
|
|
|
| 1017 |
|
|
function skipThisPair(atom1, atom2) result(skip_it) |
| 1018 |
|
|
integer, intent(in) :: atom1 |
| 1019 |
|
|
integer, intent(in), optional :: atom2 |
| 1020 |
|
|
logical :: skip_it |
| 1021 |
|
|
integer :: unique_id_1, unique_id_2 |
| 1022 |
chuckv |
388 |
integer :: me_i,me_j |
| 1023 |
mmeineke |
377 |
integer :: i |
| 1024 |
|
|
|
| 1025 |
|
|
skip_it = .false. |
| 1026 |
|
|
|
| 1027 |
|
|
!! there are a number of reasons to skip a pair or a particle |
| 1028 |
|
|
!! mostly we do this to exclude atoms who are involved in short |
| 1029 |
|
|
!! range interactions (bonds, bends, torsions), but we also need |
| 1030 |
|
|
!! to exclude some overcounted interactions that result from |
| 1031 |
|
|
!! the parallel decomposition |
| 1032 |
|
|
|
| 1033 |
|
|
#ifdef IS_MPI |
| 1034 |
|
|
!! in MPI, we have to look up the unique IDs for each atom |
| 1035 |
|
|
unique_id_1 = tagRow(atom1) |
| 1036 |
|
|
#else |
| 1037 |
|
|
!! in the normal loop, the atom numbers are unique |
| 1038 |
|
|
unique_id_1 = atom1 |
| 1039 |
|
|
#endif |
| 1040 |
chuckv |
388 |
|
| 1041 |
mmeineke |
377 |
!! We were called with only one atom, so just check the global exclude |
| 1042 |
|
|
!! list for this atom |
| 1043 |
|
|
if (.not. present(atom2)) then |
| 1044 |
|
|
do i = 1, nExcludes_global |
| 1045 |
|
|
if (excludesGlobal(i) == unique_id_1) then |
| 1046 |
|
|
skip_it = .true. |
| 1047 |
|
|
return |
| 1048 |
|
|
end if |
| 1049 |
|
|
end do |
| 1050 |
|
|
return |
| 1051 |
|
|
end if |
| 1052 |
|
|
|
| 1053 |
|
|
#ifdef IS_MPI |
| 1054 |
|
|
unique_id_2 = tagColumn(atom2) |
| 1055 |
|
|
#else |
| 1056 |
|
|
unique_id_2 = atom2 |
| 1057 |
|
|
#endif |
| 1058 |
chuckv |
441 |
|
| 1059 |
mmeineke |
377 |
#ifdef IS_MPI |
| 1060 |
|
|
!! this situation should only arise in MPI simulations |
| 1061 |
|
|
if (unique_id_1 == unique_id_2) then |
| 1062 |
|
|
skip_it = .true. |
| 1063 |
|
|
return |
| 1064 |
|
|
end if |
| 1065 |
|
|
|
| 1066 |
|
|
!! this prevents us from doing the pair on multiple processors |
| 1067 |
|
|
if (unique_id_1 < unique_id_2) then |
| 1068 |
chuckv |
441 |
if (mod(unique_id_1 + unique_id_2,2) == 0) then |
| 1069 |
|
|
skip_it = .true. |
| 1070 |
|
|
return |
| 1071 |
|
|
endif |
| 1072 |
mmeineke |
377 |
else |
| 1073 |
chuckv |
441 |
if (mod(unique_id_1 + unique_id_2,2) == 1) then |
| 1074 |
|
|
skip_it = .true. |
| 1075 |
|
|
return |
| 1076 |
|
|
endif |
| 1077 |
mmeineke |
377 |
endif |
| 1078 |
|
|
#endif |
| 1079 |
chuckv |
441 |
|
| 1080 |
mmeineke |
377 |
!! the rest of these situations can happen in all simulations: |
| 1081 |
|
|
do i = 1, nExcludes_global |
| 1082 |
|
|
if ((excludesGlobal(i) == unique_id_1) .or. & |
| 1083 |
|
|
(excludesGlobal(i) == unique_id_2)) then |
| 1084 |
|
|
skip_it = .true. |
| 1085 |
|
|
return |
| 1086 |
|
|
endif |
| 1087 |
|
|
enddo |
| 1088 |
chuckv |
441 |
|
| 1089 |
mmeineke |
377 |
do i = 1, nExcludes_local |
| 1090 |
|
|
if (excludesLocal(1,i) == unique_id_1) then |
| 1091 |
|
|
if (excludesLocal(2,i) == unique_id_2) then |
| 1092 |
|
|
skip_it = .true. |
| 1093 |
|
|
return |
| 1094 |
|
|
endif |
| 1095 |
|
|
else |
| 1096 |
|
|
if (excludesLocal(1,i) == unique_id_2) then |
| 1097 |
|
|
if (excludesLocal(2,i) == unique_id_1) then |
| 1098 |
|
|
skip_it = .true. |
| 1099 |
|
|
return |
| 1100 |
|
|
endif |
| 1101 |
|
|
endif |
| 1102 |
|
|
endif |
| 1103 |
|
|
end do |
| 1104 |
|
|
|
| 1105 |
|
|
return |
| 1106 |
|
|
end function skipThisPair |
| 1107 |
|
|
|
| 1108 |
|
|
function FF_UsesDirectionalAtoms() result(doesit) |
| 1109 |
|
|
logical :: doesit |
| 1110 |
|
|
doesit = FF_uses_dipoles .or. FF_uses_sticky .or. & |
| 1111 |
|
|
FF_uses_GB .or. FF_uses_RF |
| 1112 |
|
|
end function FF_UsesDirectionalAtoms |
| 1113 |
|
|
|
| 1114 |
|
|
function FF_RequiresPrepairCalc() result(doesit) |
| 1115 |
|
|
logical :: doesit |
| 1116 |
|
|
doesit = FF_uses_EAM |
| 1117 |
|
|
end function FF_RequiresPrepairCalc |
| 1118 |
|
|
|
| 1119 |
|
|
function FF_RequiresPostpairCalc() result(doesit) |
| 1120 |
|
|
logical :: doesit |
| 1121 |
|
|
doesit = FF_uses_RF |
| 1122 |
|
|
end function FF_RequiresPostpairCalc |
| 1123 |
|
|
|
| 1124 |
chuckv |
673 |
!! This cleans componets of force arrays belonging only to fortran |
| 1125 |
|
|
|
| 1126 |
mmeineke |
377 |
end module do_Forces |
