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!! 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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!! @version $Id: do_Forces.F90,v 1.5 2003-03-07 18:26:30 chuckv Exp $, $Date: 2003-03-07 18:26:30 $, $Name: not supported by cvs2svn $, $Revision: 1.5 $ |
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!! @version $Id: do_Forces.F90,v 1.12 2003-03-12 15:39:01 gezelter Exp $, $Date: 2003-03-12 15:39:01 $, $Name: not supported by cvs2svn $, $Revision: 1.12 $ |
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use neighborLists |
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use lj_FF |
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use lj |
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use sticky_FF |
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use dp_FF |
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use dipole_dipole |
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use gb_FF |
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#ifdef IS_MPI |
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contains |
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!! FORCE routine Calculates Lennard Jones forces. |
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!-------------------------------------------------------------> |
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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,mu,u_l,f,t,tau,potE,do_pot,FFerror) |
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!! Position array provided by C, dimensioned by getNlocal |
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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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!! Rotation Matrix for each long range particle in simulation. |
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real( kind = dp), dimension(9,getNlocal()) :: A |
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!! Magnitude dipole moment |
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!! Magnitude dipole moment |
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real( kind = dp ), dimension(3,getNlocal()) :: mu |
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!! Unit vectors for dipoles (lab frame) |
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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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!! 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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!! 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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!! Stress Tensor |
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real( kind = dp), dimension(9) :: tau |
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real ( kind = dp ) :: potE |
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logical ( kind = 2) :: do_pot |
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integer :: FFerror |
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#ifdef IS_MPI |
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real( kind = DP ) :: pot_local |
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#endif |
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type(atype), pointer :: Atype_i |
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type(atype), pointer :: Atype_j |
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real( kind = DP ) :: pe |
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logical :: update_nlist |
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integer :: i, j, jbeg, jend, jnab, idim, jdim, idim2, jdim2, dim, dim2 |
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integer :: nlist |
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integer :: j_start |
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real( kind = DP ) :: r_ij, pot, ftmp, dudr, d2, drdx1, kt1, kt2, kt3, ktmp |
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real( kind = DP ) :: rx_ij, ry_ij, rz_ij, rijsq |
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real( kind = DP ) :: rlistsq, rcutsq, rlist, rcut |
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! a rig that need to be fixed. |
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#ifdef IS_MPI |
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real( kind = DP ) :: pot_local |
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!! Local arrays needed for MPI |
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#endif |
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real( kind = DP ) :: pe |
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logical :: update_nlist |
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integer :: i, j, jbeg, jend, jnab, idim, jdim, idim2, jdim2, dim, dim2 |
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integer :: nlist |
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integer :: j_start |
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real( kind = DP ) :: r_ij, pot, ftmp, dudr, d2, drdx1, kt1, kt2, kt3, ktmp |
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real( kind = DP ) :: rx_ij, ry_ij, rz_ij, rijsq |
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real( kind = DP ) :: rlistsq, rcutsq,rlist,rcut |
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real( kind = DP ) :: dielectric = 0.0_dp |
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! a rig that need to be fixed. |
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#ifdef IS_MPI |
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real( kind = dp ) :: pe_local |
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integer :: nlocal |
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real( kind = dp ) :: pe_local |
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integer :: nlocal |
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#endif |
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integer :: nrow |
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integer :: ncol |
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integer :: natoms |
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integer :: neighborListSize |
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integer :: listerror |
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!! should we calculate the stress tensor |
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logical :: do_stress = .false. |
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integer :: nrow |
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integer :: ncol |
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integer :: natoms |
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integer :: neighborListSize |
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integer :: listerror |
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!! should we calculate the stress tensor |
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logical :: do_stress = .false. |
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FFerror = 0 |
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FFerror = 0 |
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! Make sure we are properly initialized. |
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if (.not. isFFInit) then |
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write(default_error,*) "ERROR: lj_FF has not been properly initialized" |
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FFerror = -1 |
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return |
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endif |
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! Make sure we are properly initialized. |
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if (.not. isFFInit) then |
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write(default_error,*) "ERROR: lj_FF has not been properly initialized" |
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FFerror = -1 |
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return |
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endif |
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#ifdef IS_MPI |
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if (.not. isMPISimSet()) then |
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write(default_error,*) "ERROR: mpiSimulation has not been properly initialized" |
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FFerror = -1 |
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return |
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endif |
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write(default_error,*) "ERROR: mpiSimulation has not been properly initialized" |
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FFerror = -1 |
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return |
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endif |
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#endif |
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!! initialize local variables |
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natoms = getNlocal() |
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call getRcut(rcut,rcut2=rcutsq) |
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call getRlist(rlist,rlistsq) |
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!! Find ensemble |
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if (isEnsemble("NPT")) do_stress = .true. |
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!! set to wrap |
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if (isPBC()) wrap = .true. |
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!! See if we need to update neighbor lists |
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call check(q,update_nlist) |
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!--------------WARNING........................... |
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! Zero variables, NOTE:::: Forces are zeroed in C |
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! Zeroing them here could delete previously computed |
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! Forces. |
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!------------------------------------------------ |
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call zero_module_variables() |
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! communicate MPI positions |
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#ifdef IS_MPI |
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call gather(q,qRow,plan_row3d) |
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call gather(q,qCol,plan_col3d) |
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call gather(mu,muRow,plan_row3d) |
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call gather(mu,muCol,plan_col3d) |
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call gather(u_l,u_lRow,plan_row3d) |
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call gather(u_l,u_lCol,plan_col3d) |
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|
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!! initialize local variables |
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natoms = getNlocal() |
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call getRcut(rcut,rcut2=rcutsq) |
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call getRlist(rlist,rlistsq) |
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!! See if we need to update neighbor lists |
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call check(q, update_nlist) |
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|
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!--------------WARNING........................... |
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! Zero variables, NOTE:::: Forces are zeroed in C |
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! Zeroing them here could delete previously computed |
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! Forces. |
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!------------------------------------------------ |
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call zero_module_variables() |
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call gather(A,ARow,plan_row_rotation) |
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call gather(A,ACol,plan_col_rotation) |
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! communicate MPI positions |
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#ifdef IS_MPI |
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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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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) |
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#endif |
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do i = 1, nrow |
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point(i) = nlist + 1 |
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Atype_i => identPtrListRow(i)%this |
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inner: do j = 1, ncol |
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Atype_j => identPtrListColumn(j)%this |
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call get_interatomic_vector(i,j,qRow(:,i),qCol(:,j),& |
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rxij,ryij,rzij,rijsq,r) |
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! skip the loop if the atoms are identical |
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if (mpi_cycle_jLoop(i,j)) cycle inner: |
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if (check_exclude(i,j)) cycle inner: |
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call get_interatomic_vector(q_Row(:,i), q_Col(:,j), d, rijsq) |
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if (rijsq < rlistsq) then |
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nlist = nlist + 1 |
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endif |
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list(nlist) = j |
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if (rijsq < rcutsq) then |
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call do_pair(Atype_i,Atype_j,i,j,r,rxij,ryij,rzij) |
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call do_pair(i, j, rijsq, d) |
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endif |
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endif |
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enddo inner |
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JEND = POINT(i+1) - 1 |
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! check thiat molecule i has neighbors |
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if (jbeg .le. jend) then |
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Atype_i => identPtrListRow(i)%this |
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do jnab = jbeg, jend |
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j = list(jnab) |
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Atype_j = identPtrListColumn(j)%this |
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call get_interatomic_vector(i,j,qRow(:,i),qCol(:,j),& |
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rxij,ryij,rzij,rijsq,r) |
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call do_pair(Atype_i,Atype_j,i,j,r,rxij,ryij,rzij) |
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call get_interatomic_vector(q_Row(:,i), q_Col(:,j), d, rijsq) |
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call do_pair(i, j, rijsq, d) |
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enddo |
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endif |
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enddo |
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neighborListSize = getNeighborListSize() |
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nlist = 0 |
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do i = 1, natoms-1 |
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point(i) = nlist + 1 |
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Atype_i => identPtrList(i)%this |
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inner: do j = i+1, natoms |
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Atype_j => identPtrList(j)%this |
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call get_interatomic_vector(i,j,q(:,i),q(:,j),& |
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rxij,ryij,rzij,rijsq,r) |
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if (check_exclude(i,j)) cycle inner: |
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call get_interatomic_vector(q(:,i), q(:,j), d, rijsq) |
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if (rijsq < rlistsq) then |
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nlist = nlist + 1 |
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if (nlist > neighborListSize) then |
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endif |
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list(nlist) = j |
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if (rijsq < rcutsq) then |
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call do_pair(Atype_i,Atype_j,i,j,r,rxij,ryij,rzij) |
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call do_pair(i, j, rijsq, d) |
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endif |
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endif |
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enddo inner |
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! check thiat molecule i has neighbors |
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if (jbeg .le. jend) then |
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Atype_i => identPtrList(i)%this |
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do jnab = jbeg, jend |
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j = list(jnab) |
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Atype_j = identPtrList(j)%this |
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call get_interatomic_vector(i,j,q(:,i),q(:,j),& |
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rxij,ryij,rzij,rijsq,r) |
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call do_pair(Atype_i,Atype_j,i,j,r,rxij,ryij,rzij) |
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|
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call get_interatomic_vector(q(:,i), q(:,j), d, rijsq) |
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call do_pair(i, j, rijsq, d) |
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enddo |
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endif |
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enddo |
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endif |
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#endif |
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#ifdef IS_MPI |
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!! distribute all reaction field stuff (or anything for post-pair): |
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call scatter(rflRow,rflTemp1,plan_row3d) |
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rflTemp(1:3,i) = rflTemp1(1:3,i) + rflTemp2(1:3,i) |
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end do |
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#endif |
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! This is the post-pair loop: |
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#ifdef IS_MPI |
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if (system_has_postpair_atoms) then |
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do i = 1, nlocal |
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Atype_i => identPtrListRow(i)%this |
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call do_postpair(i, Atype_i) |
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enddo |
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endif |
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#else |
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if (system_has_postpair_atoms) then |
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do i = 1, natoms |
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Atype_i => identPtr(i)%this |
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call do_postpair(i, Atype_i) |
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enddo |
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endif |
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#endif |
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#ifdef IS_MPI |
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!!distribute forces |
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|
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call scatter(fRow,fTemp1,plan_row3d) |
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call scatter(fCol,fTemp2,plan_col3d) |
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call scatter(f_Row,f,plan_row3d) |
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call scatter(f_Col,f_temp,plan_col3d) |
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do i = 1,nlocal |
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fTemp(1:3,i) = fTemp1(1:3,i) + fTemp2(1:3,i) |
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f(1:3,i) = f(1:3,i) + f_temp(1:3,i) |
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end do |
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if (do_torque) then |
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< |
call scatter(tRow,tTemp1,plan_row3d) |
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call scatter(tCol,tTemp2,plan_col3d) |
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> |
if (doTorque()) then |
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> |
call scatter(t_Row,t,plan_row3d) |
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> |
call scatter(t_Col,t_temp,plan_col3d) |
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do i = 1,nlocal |
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tTemp(1:3,i) = tTemp1(1:3,i) + tTemp2(1:3,i) |
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t(1:3,i) = t(1:3,i) + t_temp(1:3,i) |
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end do |
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endif |
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> |
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if (do_pot) then |
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! scatter/gather pot_row into the members of my column |
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< |
call scatter(eRow,eTemp,plan_row) |
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> |
call scatter(pot_Row, pot_Temp, plan_row) |
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! scatter/gather pot_local into all other procs |
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! add resultant to get total pot |
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do i = 1, nlocal |
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< |
pe_local = pe_local + eTemp(i) |
| 322 |
> |
pot_local = pot_local + pot_Temp(i) |
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enddo |
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< |
eTemp = 0.0E0_DP |
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< |
call scatter(eCol,eTemp,plan_col) |
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> |
pot_Temp = 0.0_DP |
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> |
|
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> |
call scatter(pot_Col, pot_Temp, plan_col) |
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do i = 1, nlocal |
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< |
pe_local = pe_local + eTemp(i) |
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> |
pot_local = pot_local + pot_Temp(i) |
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enddo |
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|
| 332 |
< |
pe = pe_local |
| 332 |
> |
pot = pot_local |
| 333 |
|
endif |
| 374 |
– |
#else |
| 375 |
– |
! Copy local array into return array for c |
| 376 |
– |
f = f+fTemp |
| 377 |
– |
t = t+tTemp |
| 378 |
– |
#endif |
| 334 |
|
|
| 335 |
< |
potE = pe |
| 335 |
> |
if (doStress()) then |
| 336 |
> |
mpi_allreduce(tau, tau_Temp,9,mpi_double_precision,mpi_sum, & |
| 337 |
> |
mpi_comm_world,mpi_err) |
| 338 |
> |
mpi_allreduce(virial, virial_Temp,1,mpi_double_precision,mpi_sum, & |
| 339 |
> |
mpi_comm_world,mpi_err) |
| 340 |
> |
endif |
| 341 |
|
|
| 342 |
+ |
#endif |
| 343 |
|
|
| 344 |
< |
if (do_stress) then |
| 345 |
< |
#ifdef IS_MPI |
| 346 |
< |
mpi_allreduce = (tau,tauTemp,9,mpi_double_precision,mpi_sum, & |
| 386 |
< |
mpi_comm_world,mpi_err) |
| 387 |
< |
#else |
| 388 |
< |
tau = tauTemp |
| 389 |
< |
#endif |
| 344 |
> |
if (doStress()) then |
| 345 |
> |
tau = tau_Temp |
| 346 |
> |
virial = virial_Temp |
| 347 |
|
endif |
| 348 |
|
|
| 349 |
|
end subroutine do_force_loop |
| 350 |
|
|
| 351 |
|
|
| 395 |
– |
|
| 396 |
– |
|
| 397 |
– |
|
| 398 |
– |
|
| 399 |
– |
|
| 400 |
– |
|
| 401 |
– |
|
| 402 |
– |
|
| 352 |
|
!! Calculate any pre-force loop components and update nlist if necessary. |
| 353 |
|
subroutine do_preForce(updateNlist) |
| 354 |
|
logical, intent(inout) :: updateNlist |
| 357 |
|
|
| 358 |
|
end subroutine do_preForce |
| 359 |
|
|
| 411 |
– |
|
| 412 |
– |
|
| 413 |
– |
|
| 414 |
– |
|
| 415 |
– |
|
| 416 |
– |
|
| 417 |
– |
|
| 418 |
– |
|
| 419 |
– |
|
| 420 |
– |
|
| 421 |
– |
|
| 422 |
– |
|
| 360 |
|
!! Calculate any post force loop components, i.e. reaction field, etc. |
| 361 |
|
subroutine do_postForce() |
| 362 |
|
|
| 364 |
|
|
| 365 |
|
end subroutine do_postForce |
| 366 |
|
|
| 367 |
+ |
subroutine do_pair(i, j, rijsq, d) |
| 368 |
|
|
| 369 |
+ |
integer, intent(in) :: i, j |
| 370 |
+ |
real ( kind = dp ), intent(in) :: rijsq |
| 371 |
+ |
real ( kind = dp ) :: r |
| 372 |
+ |
real ( kind = dp ), intent(inout) :: d(3) |
| 373 |
|
|
| 374 |
+ |
r = sqrt(rijsq) |
| 375 |
+ |
|
| 376 |
+ |
logical :: is_LJ_i, is_LJ_j |
| 377 |
+ |
logical :: is_DP_i, is_DP_j |
| 378 |
+ |
logical :: is_Sticky_i, is_Sticky_j |
| 379 |
+ |
integer :: me_i, me_j |
| 380 |
|
|
| 381 |
+ |
#ifdef IS_MPI |
| 382 |
|
|
| 383 |
+ |
me_i = atid_row(i) |
| 384 |
+ |
me_j = atid_col(j) |
| 385 |
|
|
| 386 |
+ |
#else |
| 387 |
|
|
| 388 |
+ |
me_i = atid(i) |
| 389 |
+ |
me_j = atid(j) |
| 390 |
|
|
| 391 |
+ |
#endif |
| 392 |
|
|
| 393 |
+ |
call getElementProperty(atypes, me_i, "is_LJ", is_LJ_i) |
| 394 |
+ |
call getElementProperty(atypes, me_j, "is_LJ", is_LJ_j) |
| 395 |
|
|
| 396 |
+ |
if ( is_LJ_i .and. is_LJ_j ) call do_lj_pair(i, j, d, r, rijsq, pot, f) |
| 397 |
|
|
| 398 |
+ |
call getElementProperty(atypes, me_i, "is_DP", is_DP_i) |
| 399 |
+ |
call getElementProperty(atypes, me_j, "is_DP", is_DP_j) |
| 400 |
|
|
| 401 |
+ |
if ( is_DP_i .and. is_DP_j ) then |
| 402 |
|
|
| 403 |
+ |
call do_dipole_pair(i, j, d, r, pot, u_l, f, t) |
| 404 |
|
|
| 443 |
– |
|
| 444 |
– |
|
| 445 |
– |
|
| 446 |
– |
subroutine do_pair(atype_i,atype_j,i,j,r_ij,rx_ij,ry_ij,rz_ij) |
| 447 |
– |
type (atype ), pointer, intent(inout) :: atype_i |
| 448 |
– |
type (atype ), pointer, intent(inout) :: atype_j |
| 449 |
– |
integer :: i |
| 450 |
– |
integer :: j |
| 451 |
– |
real ( kind = dp ), intent(inout) :: rx_ij |
| 452 |
– |
real ( kind = dp ), intent(inout) :: ry_ij |
| 453 |
– |
real ( kind = dp ), intent(inout) :: rz_ij |
| 454 |
– |
|
| 455 |
– |
|
| 456 |
– |
real( kind = dp ) :: fx = 0.0_dp |
| 457 |
– |
real( kind = dp ) :: fy = 0.0_dp |
| 458 |
– |
real( kind = dp ) :: fz = 0.0_dp |
| 459 |
– |
|
| 460 |
– |
real( kind = dp ) :: drdx = 0.0_dp |
| 461 |
– |
real( kind = dp ) :: drdy = 0.0_dp |
| 462 |
– |
real( kind = dp ) :: drdz = 0.0_dp |
| 463 |
– |
|
| 464 |
– |
|
| 465 |
– |
if (Atype_i%is_LJ .and. Atype_j%is_LJ) then |
| 466 |
– |
call getLJForce(r,pot,dudr,ljAtype_i,ljAtype_j,fx,fy,fz) |
| 467 |
– |
endif |
| 468 |
– |
|
| 469 |
– |
if (Atype_i%is_dp .and. Atype_j%is_dp) then |
| 470 |
– |
|
| 471 |
– |
#ifdef IS_MPI |
| 472 |
– |
call dipole_dipole(i, j, atype_i, atype_j, rx_ij, ry_ij, rz_ij, r_ij, & |
| 473 |
– |
ulRow(:,i), ulCol(:,j), rt, rrf, pot) |
| 474 |
– |
#else |
| 475 |
– |
call dipole_dipole(i, j, atype_i, atype_j, rx_ij, ry_ij, rz_ij, r_ij, & |
| 476 |
– |
ul(:,i), ul(:,j), rt, rrf, pot) |
| 477 |
– |
#endif |
| 478 |
– |
|
| 405 |
|
if (do_reaction_field) then |
| 406 |
< |
#ifdef IS_MPI |
| 481 |
< |
call accumulate_rf(i, j, r_ij, rflRow(:,i), rflCol(:j), & |
| 482 |
< |
ulRow(:i), ulCol(:,j), rt, rrf) |
| 483 |
< |
#else |
| 484 |
< |
call accumulate_rf(i, j, r_ij, rfl(:,i), rfl(:j), & |
| 485 |
< |
ul(:,i), ul(:,j), rt, rrf) |
| 486 |
< |
#endif |
| 406 |
> |
call accumulate_rf(i, j, r) |
| 407 |
|
endif |
| 408 |
|
|
| 489 |
– |
|
| 409 |
|
endif |
| 410 |
|
|
| 411 |
< |
if (Atype_i%is_sticky .and. Atype_j%is_sticky) then |
| 412 |
< |
call getstickyforce(r,pot,dudr,ljAtype_i,ljAtype_j) |
| 411 |
> |
call getElementProperty(atypes, me_i, "is_Sticky", is_Sticky_i) |
| 412 |
> |
call getElementProperty(atypes, me_j, "is_Sticky", is_Sticky_j) |
| 413 |
> |
|
| 414 |
> |
if ( is_Sticky_i .and. is_Sticky_j ) then |
| 415 |
> |
call do_sticky_pair(i, j, d, r, rijsq, A, pot, f, t) |
| 416 |
|
endif |
| 417 |
|
|
| 418 |
< |
|
| 497 |
< |
#ifdef IS_MPI |
| 498 |
< |
eRow(i) = eRow(i) + pot*0.5 |
| 499 |
< |
eCol(i) = eCol(i) + pot*0.5 |
| 500 |
< |
#else |
| 501 |
< |
pe = pe + pot |
| 502 |
< |
#endif |
| 503 |
< |
|
| 504 |
< |
drdx = -rxij / r |
| 505 |
< |
drdy = -ryij / r |
| 506 |
< |
drdz = -rzij / r |
| 507 |
< |
|
| 508 |
< |
fx = dudr * drdx |
| 509 |
< |
fy = dudr * drdy |
| 510 |
< |
fz = dudr * drdz |
| 511 |
< |
|
| 512 |
< |
|
| 513 |
< |
|
| 514 |
< |
|
| 515 |
< |
|
| 516 |
< |
|
| 517 |
< |
|
| 518 |
< |
#ifdef IS_MPI |
| 519 |
< |
fCol(1,j) = fCol(1,j) - fx |
| 520 |
< |
fCol(2,j) = fCol(2,j) - fy |
| 521 |
< |
fCol(3,j) = fCol(3,j) - fz |
| 522 |
< |
|
| 523 |
< |
fRow(1,j) = fRow(1,j) + fx |
| 524 |
< |
fRow(2,j) = fRow(2,j) + fy |
| 525 |
< |
fRow(3,j) = fRow(3,j) + fz |
| 526 |
< |
#else |
| 527 |
< |
fTemp(1,j) = fTemp(1,j) - fx |
| 528 |
< |
fTemp(2,j) = fTemp(2,j) - fy |
| 529 |
< |
fTemp(3,j) = fTemp(3,j) - fz |
| 530 |
< |
fTemp(1,i) = fTemp(1,i) + fx |
| 531 |
< |
fTemp(2,i) = fTemp(2,i) + fy |
| 532 |
< |
fTemp(3,i) = fTemp(3,i) + fz |
| 533 |
< |
#endif |
| 534 |
< |
|
| 535 |
< |
if (do_stress) then |
| 536 |
< |
tauTemp(1) = tauTemp(1) + fx * rxij |
| 537 |
< |
tauTemp(2) = tauTemp(2) + fx * ryij |
| 538 |
< |
tauTemp(3) = tauTemp(3) + fx * rzij |
| 539 |
< |
tauTemp(4) = tauTemp(4) + fy * rxij |
| 540 |
< |
tauTemp(5) = tauTemp(5) + fy * ryij |
| 541 |
< |
tauTemp(6) = tauTemp(6) + fy * rzij |
| 542 |
< |
tauTemp(7) = tauTemp(7) + fz * rxij |
| 543 |
< |
tauTemp(8) = tauTemp(8) + fz * ryij |
| 544 |
< |
tauTemp(9) = tauTemp(9) + fz * rzij |
| 545 |
< |
endif |
| 546 |
< |
|
| 547 |
< |
|
| 548 |
< |
|
| 418 |
> |
|
| 419 |
|
end subroutine do_pair |
| 420 |
|
|
| 421 |
|
|
| 422 |
< |
|
| 423 |
< |
|
| 554 |
< |
|
| 555 |
< |
|
| 556 |
< |
|
| 557 |
< |
|
| 558 |
< |
|
| 559 |
< |
|
| 560 |
< |
|
| 561 |
< |
|
| 562 |
< |
|
| 563 |
< |
|
| 564 |
< |
|
| 565 |
< |
|
| 566 |
< |
subroutine get_interatomic_vector(q_i,q_j,rx_ij,ry_ij,rz_ij,r_sq,r_ij) |
| 567 |
< |
!---------------- Arguments------------------------------- |
| 568 |
< |
!! index i |
| 569 |
< |
|
| 570 |
< |
!! Position array |
| 422 |
> |
subroutine get_interatomic_vector(q_i, q_j, d, r_sq) |
| 423 |
> |
|
| 424 |
|
real (kind = dp), dimension(3) :: q_i |
| 425 |
|
real (kind = dp), dimension(3) :: q_j |
| 573 |
– |
!! x component of vector between i and j |
| 574 |
– |
real ( kind = dp ), intent(out) :: rx_ij |
| 575 |
– |
!! y component of vector between i and j |
| 576 |
– |
real ( kind = dp ), intent(out) :: ry_ij |
| 577 |
– |
!! z component of vector between i and j |
| 578 |
– |
real ( kind = dp ), intent(out) :: rz_ij |
| 579 |
– |
!! magnitude of r squared |
| 426 |
|
real ( kind = dp ), intent(out) :: r_sq |
| 581 |
– |
!! magnitude of vector r between atoms i and j. |
| 582 |
– |
real ( kind = dp ), intent(out) :: r_ij |
| 583 |
– |
!! wrap into periodic box. |
| 584 |
– |
logical, intent(in) :: wrap |
| 585 |
– |
|
| 586 |
– |
!--------------- Local Variables--------------------------- |
| 587 |
– |
!! Distance between i and j |
| 427 |
|
real( kind = dp ) :: d(3) |
| 589 |
– |
!---------------- END DECLARATIONS------------------------- |
| 428 |
|
|
| 591 |
– |
|
| 592 |
– |
! Find distance between i and j |
| 429 |
|
d(1:3) = q_i(1:3) - q_j(1:3) |
| 430 |
< |
|
| 431 |
< |
! Wrap back into periodic box if necessary |
| 432 |
< |
if ( wrap ) then |
| 430 |
> |
|
| 431 |
> |
! Wrap back into periodic box if necessary |
| 432 |
> |
if ( isPBC() ) then |
| 433 |
|
d(1:3) = d(1:3) - thisSim%box(1:3) * sign(1.0_dp,thisSim%box(1:3)) * & |
| 434 |
|
int(abs(d(1:3)/thisSim%box(1:3) + 0.5_dp) |
| 435 |
< |
end if |
| 435 |
> |
endif |
| 436 |
|
|
| 601 |
– |
! Find Magnitude of the vector |
| 437 |
|
r_sq = dot_product(d,d) |
| 438 |
< |
r_ij = sqrt(r_sq) |
| 604 |
< |
|
| 605 |
< |
! Set each component for force calculation |
| 606 |
< |
rx_ij = d(1) |
| 607 |
< |
ry_ij = d(2) |
| 608 |
< |
rz_ij = d(3) |
| 609 |
< |
|
| 610 |
< |
|
| 438 |
> |
|
| 439 |
|
end subroutine get_interatomic_vector |
| 440 |
< |
|
| 440 |
> |
|
| 441 |
|
subroutine zero_module_variables() |
| 442 |
|
|
| 443 |
|
#ifndef IS_MPI |
| 475 |
|
|
| 476 |
|
end subroutine zero_module_variables |
| 477 |
|
|
| 478 |
< |
#ifdef IS_MPI |
| 478 |
> |
|
| 479 |
|
!! Function to properly build neighbor lists in MPI using newtons 3rd law. |
| 480 |
|
!! We don't want 2 processors doing the same i j pair twice. |
| 481 |
|
!! Also checks to see if i and j are the same particle. |
| 482 |
< |
function mpi_cycle_jLoop(i,j) result(do_cycle) |
| 482 |
> |
function checkExcludes(atom1,atom2) result(do_cycle) |
| 483 |
|
!--------------- Arguments-------------------------- |
| 484 |
|
! Index i |
| 485 |
< |
integer,intent(in) :: i |
| 485 |
> |
integer,intent(in) :: atom1 |
| 486 |
|
! Index j |
| 487 |
< |
integer,intent(in) :: j |
| 487 |
> |
integer,intent(in), optional :: atom2 |
| 488 |
|
! Result do_cycle |
| 489 |
|
logical :: do_cycle |
| 490 |
|
!--------------- Local variables-------------------- |
| 491 |
|
integer :: tag_i |
| 492 |
|
integer :: tag_j |
| 493 |
< |
!--------------- END DECLARATIONS------------------ |
| 494 |
< |
tag_i = tagRow(i) |
| 493 |
> |
integer :: i |
| 494 |
> |
!--------------- END DECLARATIONS------------------ |
| 495 |
> |
do_cycle = .false. |
| 496 |
> |
|
| 497 |
> |
#ifdef IS_MPI |
| 498 |
> |
tag_i = tagRow(atom1) |
| 499 |
> |
#else |
| 500 |
> |
tag_i = tag(atom1) |
| 501 |
> |
#endif |
| 502 |
> |
|
| 503 |
> |
!! Check global excludes first |
| 504 |
> |
if (.not. present(atom2)) then |
| 505 |
> |
do i = 1,nGlobalExcludes |
| 506 |
> |
if (excludeGlobal(i) == tag_i) then |
| 507 |
> |
do_cycle = .true. |
| 508 |
> |
return |
| 509 |
> |
end if |
| 510 |
> |
end do |
| 511 |
> |
return !! return after checking globals |
| 512 |
> |
end if |
| 513 |
> |
|
| 514 |
> |
!! we return if j not present here. |
| 515 |
|
tag_j = tagColumn(j) |
| 516 |
|
|
| 517 |
< |
do_cycle = .false. |
| 517 |
> |
|
| 518 |
|
|
| 519 |
|
if (tag_i == tag_j) then |
| 520 |
|
do_cycle = .true. |
| 527 |
|
else |
| 528 |
|
if (mod(tag_i + tag_j,2) == 1) do_cycle = .true. |
| 529 |
|
endif |
| 682 |
– |
end function mpi_cycle_jLoop |
| 683 |
– |
#endif |
| 530 |
|
|
| 531 |
+ |
|
| 532 |
+ |
|
| 533 |
+ |
do i = 1, nLocalExcludes |
| 534 |
+ |
if (tag_i = excludes(1,i) .and. excludes(2,i) < 0) then |
| 535 |
+ |
do_cycle = .true. |
| 536 |
+ |
return |
| 537 |
+ |
end if |
| 538 |
+ |
end do |
| 539 |
+ |
|
| 540 |
+ |
|
| 541 |
+ |
end function checkExcludes |
| 542 |
+ |
|
| 543 |
+ |
|
| 544 |
|
end module do_Forces |
