ViewVC Help
View File | Revision Log | Show Annotations | View Changeset | Root Listing
root/group/trunk/OOPSE-4/src/UseTheForce/DarkSide/eam.F90
(Generate patch)

Comparing trunk/OOPSE-4/src/UseTheForce/DarkSide/eam.F90 (file contents):
Revision 2278 by chrisfen, Fri Aug 26 22:39:25 2005 UTC vs.
Revision 2756 by gezelter, Wed May 17 15:37:15 2006 UTC

# Line 40 | Line 40 | module eam
40   !!
41  
42   module eam
43 +  use definitions
44    use simulation
45    use force_globals
46    use status
47    use atype_module
48    use vector_class
49 +  use interpolation
50   #ifdef IS_MPI
51    use mpiSimulation
52   #endif
53    implicit none
54    PRIVATE
55 + #define __FORTRAN90
56 + #include "UseTheForce/DarkSide/fInteractionMap.h"
57  
54 –  INTEGER, PARAMETER :: DP = selected_real_kind(15)
55 –
58    logical, save :: EAM_FF_initialized = .false.
59    integer, save :: EAM_Mixing_Policy
60    real(kind = dp), save :: EAM_rcut
# Line 65 | Line 67 | module eam
67    character(len=*), parameter :: RoutineName =  "EAM MODULE"
68    !! Logical that determines if eam arrays should be zeroed
69    logical :: cleanme = .true.
68 –  logical :: nmflag  = .false.
70  
70 –
71    type, private :: EAMtype
72       integer           :: eam_atype      
73 –     real( kind = DP ) :: eam_dr          
74 –     integer           :: eam_nr          
75 –     integer           :: eam_nrho          
73       real( kind = DP ) :: eam_lattice        
77 –     real( kind = DP ) :: eam_drho      
74       real( kind = DP ) :: eam_rcut    
75       integer           :: eam_atype_map
76 <
77 <     real( kind = DP ), pointer, dimension(:) :: eam_rvals        => null()
78 <     real( kind = DP ), pointer, dimension(:) :: eam_rhovals      => null()
79 <     real( kind = DP ), pointer, dimension(:) :: eam_F_rho        => null()
84 <     real( kind = DP ), pointer, dimension(:) :: eam_Z_r          => null()
85 <     real( kind = DP ), pointer, dimension(:) :: eam_rho_r        => null()
86 <     real( kind = DP ), pointer, dimension(:) :: eam_phi_r        => null()
87 <     real( kind = DP ), pointer, dimension(:) :: eam_F_rho_pp     => null()
88 <     real( kind = DP ), pointer, dimension(:) :: eam_Z_r_pp       => null()
89 <     real( kind = DP ), pointer, dimension(:) :: eam_rho_r_pp     => null()
90 <     real( kind = DP ), pointer, dimension(:) :: eam_phi_r_pp     => null()
76 >     type(cubicSpline) :: rho
77 >     type(cubicSpline) :: Z
78 >     type(cubicSpline) :: F
79 >     type(cubicSpline) :: phi
80    end type EAMtype
81  
93 –
82    !! Arrays for derivatives used in force calculation
83    real( kind = dp), dimension(:), allocatable :: frho
84    real( kind = dp), dimension(:), allocatable :: rho
97 –
85    real( kind = dp), dimension(:), allocatable :: dfrhodrho
99 –  real( kind = dp), dimension(:), allocatable :: d2frhodrhodrho
86  
101 –
87    !! Arrays for MPI storage
88   #ifdef IS_MPI
89    real( kind = dp),save, dimension(:), allocatable :: dfrhodrho_col
# Line 108 | Line 93 | module eam
93    real( kind = dp),save, dimension(:), allocatable :: rho_row
94    real( kind = dp),save, dimension(:), allocatable :: rho_col
95    real( kind = dp),save, dimension(:), allocatable :: rho_tmp
111 –  real( kind = dp),save, dimension(:), allocatable :: d2frhodrhodrho_col
112 –  real( kind = dp),save, dimension(:), allocatable :: d2frhodrhodrho_row
96   #endif
97  
98    type, private :: EAMTypeList
# Line 120 | Line 103 | module eam
103       integer, pointer         :: atidToEAMType(:) => null()
104    end type EAMTypeList
105  
123 –
106    type (eamTypeList), save :: EAMList
107  
108    !! standard eam stuff  
# Line 135 | Line 117 | module eam
117    public :: clean_EAM
118    public :: destroyEAMTypes
119    public :: getEAMCut
120 +  public :: lookupEAMSpline
121 +  public :: lookupEAMSpline1d
122  
123   contains
124  
141 –
125    subroutine newEAMtype(lattice_constant,eam_nrho,eam_drho,eam_nr,&
126 <       eam_dr,rcut,eam_Z_r,eam_rho_r,eam_F_rho,&
144 <       c_ident,status)
126 >       eam_dr,rcut,eam_Z_r,eam_rho_r,eam_F_rho, c_ident, status)
127      real (kind = dp )                      :: lattice_constant
128      integer                                :: eam_nrho
129      real (kind = dp )                      :: eam_drho
130      integer                                :: eam_nr
131      real (kind = dp )                      :: eam_dr
132      real (kind = dp )                      :: rcut
133 <    real (kind = dp ), dimension(eam_nr)   :: eam_Z_r
134 <    real (kind = dp ), dimension(eam_nr)   :: eam_rho_r
135 <    real (kind = dp ), dimension(eam_nrho) :: eam_F_rho
133 >    real (kind = dp ), dimension(eam_nr)   :: eam_Z_r, rvals
134 >    real (kind = dp ), dimension(eam_nr)   :: eam_rho_r, eam_phi_r
135 >    real (kind = dp ), dimension(eam_nrho) :: eam_F_rho, rhovals
136      integer                                :: c_ident
137      integer                                :: status
138  
139      integer                                :: nAtypes,nEAMTypes,myATID
140      integer                                :: maxVals
141      integer                                :: alloc_stat
142 <    integer                                :: current
142 >    integer                                :: current, j
143      integer,pointer                        :: Matchlist(:) => null()
144  
145      status = 0
146  
165 –
147      !! Assume that atypes has already been set and get the total number of types in atypes
148      !! Also assume that every member of atypes is a EAM model.
149  
169 –
150      ! check to see if this is the first time into
151      if (.not.associated(EAMList%EAMParams)) then
152         call getMatchingElementList(atypes, "is_EAM", .true., nEAMtypes, MatchList)
# Line 182 | Line 162 | contains
162      myATID =  getFirstMatchingElement(atypes, "c_ident", c_ident)
163      EAMList%atidToEAMType(myATID) = current
164  
185 –    call allocate_EAMType(eam_nrho,eam_nr,EAMList%EAMParams(current),stat=alloc_stat)
186 –    if (alloc_stat /= 0) then
187 –       status = -1
188 –       return
189 –    end if
190 –
191 –  
165      EAMList%EAMParams(current)%eam_atype    = c_ident
166      EAMList%EAMParams(current)%eam_lattice  = lattice_constant
194 –    EAMList%EAMParams(current)%eam_nrho     = eam_nrho
195 –    EAMList%EAMParams(current)%eam_drho     = eam_drho
196 –    EAMList%EAMParams(current)%eam_nr       = eam_nr
197 –    EAMList%EAMParams(current)%eam_dr       = eam_dr
167      EAMList%EAMParams(current)%eam_rcut     = rcut
199 –    EAMList%EAMParams(current)%eam_Z_r      = eam_Z_r
200 –    EAMList%EAMParams(current)%eam_rho_r    = eam_rho_r
201 –    EAMList%EAMParams(current)%eam_F_rho    = eam_F_rho
168  
169 +    ! Build array of r values
170 +    do j = 1, eam_nr
171 +       rvals(j) = real(j-1,kind=dp) * eam_dr
172 +    end do
173 +    
174 +    ! Build array of rho values
175 +    do j = 1, eam_nrho
176 +       rhovals(j) = real(j-1,kind=dp) * eam_drho
177 +    end do
178 +
179 +    ! convert from eV to kcal / mol:
180 +    do j = 1, eam_nrho
181 +       eam_F_rho(j) = eam_F_rho(j) * 23.06054E0_DP
182 +    end do
183 +    
184 +    ! precompute the pair potential and get it into kcal / mol:
185 +    eam_phi_r(1) = 0.0E0_DP
186 +    do j = 2, eam_nr
187 +       eam_phi_r(j) = 331.999296E0_DP * (eam_Z_r(j)**2) / rvals(j)
188 +    enddo
189 +
190 +    call newSpline(EAMList%EAMParams(current)%rho, rvals, eam_rho_r, .true.)
191 +    call newSpline(EAMList%EAMParams(current)%Z,   rvals, eam_Z_r, .true.)
192 +    call newSpline(EAMList%EAMParams(current)%F, rhovals, eam_F_rho, .true.)
193 +    call newSpline(EAMList%EAMParams(current)%phi, rvals, eam_phi_r, .true.)
194    end subroutine newEAMtype
195  
196  
# Line 217 | Line 208 | contains
208  
209      eamList%n_eam_types = 0
210      eamList%currentAddition = 0
220 –
211    end subroutine destroyEAMtypes
212  
213    function getEAMCut(atomID) result(cutValue)
# Line 227 | Line 217 | contains
217      
218      eamID = EAMList%atidToEAMType(atomID)
219      cutValue = EAMList%EAMParams(eamID)%eam_rcut
230 –
220    end function getEAMCut
221  
222    subroutine init_EAM_FF(status)
223      integer :: status
224      integer :: i,j
225      real(kind=dp) :: current_rcut_max
226 + #ifdef IS_MPI
227 +    integer :: nAtomsInRow
228 +    integer :: nAtomsInCol
229 + #endif
230      integer :: alloc_stat
231      integer :: number_r, number_rho
232  
240 –
233      status = 0
234      if (EAMList%currentAddition == 0) then
235         call handleError("init_EAM_FF","No members in EAMList")
236         status = -1
237         return
238      end if
239 <
248 <
249 <    do i = 1, EAMList%currentAddition
250 <
251 <       ! Build array of r values
252 <
253 <       do j = 1,EAMList%EAMParams(i)%eam_nr
254 <          EAMList%EAMParams(i)%eam_rvals(j) = &
255 <               real(j-1,kind=dp)* &
256 <               EAMList%EAMParams(i)%eam_dr
257 <       end do
258 <       ! Build array of rho values
259 <       do j = 1,EAMList%EAMParams(i)%eam_nrho
260 <          EAMList%EAMParams(i)%eam_rhovals(j) = &
261 <               real(j-1,kind=dp)* &
262 <               EAMList%EAMParams(i)%eam_drho
263 <       end do
264 <       ! convert from eV to kcal / mol:
265 <       EAMList%EAMParams(i)%eam_F_rho = EAMList%EAMParams(i)%eam_F_rho * 23.06054E0_DP
266 <
267 <       ! precompute the pair potential and get it into kcal / mol:
268 <       EAMList%EAMParams(i)%eam_phi_r(1) = 0.0E0_DP
269 <       do j = 2, EAMList%EAMParams(i)%eam_nr
270 <          EAMList%EAMParams(i)%eam_phi_r(j) = (EAMList%EAMParams(i)%eam_Z_r(j)**2)/EAMList%EAMParams(i)%eam_rvals(j)
271 <          EAMList%EAMParams(i)%eam_phi_r(j) =  EAMList%EAMParams(i)%eam_phi_r(j)*331.999296E0_DP
272 <       enddo
273 <    end do
274 <
275 <
276 <    do i = 1,  EAMList%currentAddition
277 <       number_r   = EAMList%EAMParams(i)%eam_nr
278 <       number_rho = EAMList%EAMParams(i)%eam_nrho
279 <
280 <       call eam_spline(number_r, EAMList%EAMParams(i)%eam_rvals, &
281 <            EAMList%EAMParams(i)%eam_rho_r, &
282 <            EAMList%EAMParams(i)%eam_rho_r_pp, &
283 <            0.0E0_DP, 0.0E0_DP, 'N')
284 <       call eam_spline(number_r, EAMList%EAMParams(i)%eam_rvals, &
285 <            EAMList%EAMParams(i)%eam_Z_r, &
286 <            EAMList%EAMParams(i)%eam_Z_r_pp, &
287 <            0.0E0_DP, 0.0E0_DP, 'N')
288 <       call eam_spline(number_rho, EAMList%EAMParams(i)%eam_rhovals, &
289 <            EAMList%EAMParams(i)%eam_F_rho, &
290 <            EAMList%EAMParams(i)%eam_F_rho_pp, &
291 <            0.0E0_DP, 0.0E0_DP, 'N')
292 <       call eam_spline(number_r, EAMList%EAMParams(i)%eam_rvals, &
293 <            EAMList%EAMParams(i)%eam_phi_r, &
294 <            EAMList%EAMParams(i)%eam_phi_r_pp, &
295 <            0.0E0_DP, 0.0E0_DP, 'N')
296 <    enddo
297 <
298 <    !       current_rcut_max = EAMList%EAMParams(1)%eam_rcut
299 <    !! find the smallest rcut for any eam atype
300 <    !       do i = 2, EAMList%currentAddition
301 <    !          current_rcut_max =max(current_rcut_max,EAMList%EAMParams(i)%eam_rcut)
302 <    !       end do
303 <
304 <    !       EAM_rcut = current_rcut_max
305 <    !       EAM_rcut_orig = current_rcut_max
306 <    !       do i = 1, EAMList%currentAddition
307 <    !          EAMList%EAMParam(i)s%eam_atype_map(eam_atype(i)) = i
308 <    !       end do
239 >    
240      !! Allocate arrays for force calculation
241 <
311 <    call allocateEAM(alloc_stat)
312 <    if (alloc_stat /= 0 ) then
313 <       write(*,*) "allocateEAM failed"
314 <       status = -1
315 <       return
316 <    endif
317 <
318 <  end subroutine init_EAM_FF
319 <
320 <  !! routine checks to see if array is allocated, deallocates array if allocated
321 <  !! and then creates the array to the required size
322 <  subroutine allocateEAM(status)
323 <    integer, intent(out) :: status
324 <
325 < #ifdef IS_MPI
326 <    integer :: nAtomsInRow
327 <    integer :: nAtomsInCol
328 < #endif
329 <    integer :: alloc_stat
330 <
331 <
332 <    status = 0
241 >    
242   #ifdef IS_MPI
243      nAtomsInRow = getNatomsInRow(plan_atom_row)
244      nAtomsInCol = getNatomsInCol(plan_atom_col)
# Line 341 | Line 250 | contains
250         status = -1
251         return
252      end if
253 +
254      if (allocated(rho)) deallocate(rho)
255      allocate(rho(nlocal),stat=alloc_stat)
256      if (alloc_stat /= 0) then
# Line 355 | Line 265 | contains
265         return
266      end if
267  
358 –    if (allocated(d2frhodrhodrho)) deallocate(d2frhodrhodrho)
359 –    allocate(d2frhodrhodrho(nlocal),stat=alloc_stat)
360 –    if (alloc_stat /= 0) then
361 –       status = -1
362 –       return
363 –    end if
364 –
268   #ifdef IS_MPI
269  
270      if (allocated(rho_tmp)) deallocate(rho_tmp)
# Line 371 | Line 274 | contains
274         return
275      end if
276  
374 –
277      if (allocated(frho_row)) deallocate(frho_row)
278      allocate(frho_row(nAtomsInRow),stat=alloc_stat)
279      if (alloc_stat /= 0) then
# Line 390 | Line 292 | contains
292         status = -1
293         return
294      end if
393 –    if (allocated(d2frhodrhodrho_row)) deallocate(d2frhodrhodrho_row)
394 –    allocate(d2frhodrhodrho_row(nAtomsInRow),stat=alloc_stat)
395 –    if (alloc_stat /= 0) then
396 –       status = -1
397 –       return
398 –    end if
295  
400 –
296      ! Now do column arrays
297  
298      if (allocated(frho_col)) deallocate(frho_col)
# Line 418 | Line 313 | contains
313         status = -1
314         return
315      end if
421 –    if (allocated(d2frhodrhodrho_col)) deallocate(d2frhodrhodrho_col)
422 –    allocate(d2frhodrhodrho_col(nAtomsInCol),stat=alloc_stat)
423 –    if (alloc_stat /= 0) then
424 –       status = -1
425 –       return
426 –    end if
316  
317   #endif
318  
319 <  end subroutine allocateEAM
319 >  end subroutine init_EAM_FF
320  
321 <  !! C sets rcut to be the largest cutoff of any atype
433 <  !! present in this simulation. Doesn't include all atypes
434 <  !! sim knows about, just those in the simulation.
435 <  subroutine setCutoffEAM(rcut, status)
321 >  subroutine setCutoffEAM(rcut)
322      real(kind=dp) :: rcut
437 –    integer :: status
438 –    status = 0
439 –
323      EAM_rcut = rcut
441 –
324    end subroutine setCutoffEAM
325  
444 –
445 –
326    subroutine clean_EAM()
327  
328      ! clean non-IS_MPI first
# Line 461 | Line 341 | contains
341   #endif
342    end subroutine clean_EAM
343  
464 –
465 –
466 –  subroutine allocate_EAMType(eam_n_rho,eam_n_r,thisEAMType,stat)
467 –    integer, intent(in)          :: eam_n_rho
468 –    integer, intent(in)          :: eam_n_r
469 –    type (EAMType)               :: thisEAMType
470 –    integer, optional   :: stat
471 –    integer             :: alloc_stat
472 –
473 –
474 –
475 –    if (present(stat)) stat = 0
476 –
477 –    allocate(thisEAMType%eam_rvals(eam_n_r),stat=alloc_stat)  
478 –    if (alloc_stat /= 0 ) then
479 –       if (present(stat)) stat = -1
480 –       return
481 –    end if
482 –    allocate(thisEAMType%eam_rhovals(eam_n_rho),stat=alloc_stat)  
483 –    if (alloc_stat /= 0 ) then
484 –       if (present(stat)) stat = -1
485 –       return
486 –    end if
487 –    allocate(thisEAMType%eam_F_rho(eam_n_rho),stat=alloc_stat)  
488 –    if (alloc_stat /= 0 ) then
489 –       if (present(stat)) stat = -1
490 –       return
491 –    end if
492 –    allocate(thisEAMType%eam_Z_r(eam_n_r),stat=alloc_stat)        
493 –    if (alloc_stat /= 0 ) then
494 –       if (present(stat)) stat = -1
495 –       return
496 –    end if
497 –    allocate(thisEAMType%eam_rho_r(eam_n_r),stat=alloc_stat)      
498 –    if (alloc_stat /= 0 ) then
499 –       if (present(stat)) stat = -1
500 –       return
501 –    end if
502 –    allocate(thisEAMType%eam_phi_r(eam_n_r),stat=alloc_stat)      
503 –    if (alloc_stat /= 0 ) then
504 –       if (present(stat)) stat = -1
505 –       return
506 –    end if
507 –    allocate(thisEAMType%eam_F_rho_pp(eam_n_rho),stat=alloc_stat)  
508 –    if (alloc_stat /= 0 ) then
509 –       if (present(stat)) stat = -1
510 –       return
511 –    end if
512 –    allocate(thisEAMType%eam_Z_r_pp(eam_n_r),stat=alloc_stat)  
513 –    if (alloc_stat /= 0 ) then
514 –       if (present(stat)) stat = -1
515 –       return
516 –    end if
517 –    allocate(thisEAMType%eam_rho_r_pp(eam_n_r),stat=alloc_stat)  
518 –    if (alloc_stat /= 0 ) then
519 –       if (present(stat)) stat = -1
520 –       return
521 –    end if
522 –    allocate(thisEAMType%eam_phi_r_pp(eam_n_r),stat=alloc_stat)
523 –    if (alloc_stat /= 0 ) then
524 –       if (present(stat)) stat = -1
525 –       return
526 –    end if
527 –
528 –
529 –  end subroutine allocate_EAMType
530 –
531 –
344    subroutine deallocate_EAMType(thisEAMType)
345      type (EAMtype), pointer :: thisEAMType
346  
347 <    ! free Arrays in reverse order of allocation...
348 <    if(associated(thisEAMType%eam_phi_r_pp)) deallocate(thisEAMType%eam_phi_r_pp)      
349 <    if(associated(thisEAMType%eam_rho_r_pp)) deallocate(thisEAMType%eam_rho_r_pp)  
350 <    if(associated(thisEAMType%eam_Z_r_pp)) deallocate(thisEAMType%eam_Z_r_pp)  
539 <    if(associated(thisEAMType%eam_F_rho_pp)) deallocate(thisEAMType%eam_F_rho_pp)  
540 <    if(associated(thisEAMType%eam_phi_r)) deallocate(thisEAMType%eam_phi_r)      
541 <    if(associated(thisEAMType%eam_rho_r)) deallocate(thisEAMType%eam_rho_r)      
542 <    if(associated(thisEAMType%eam_Z_r)) deallocate(thisEAMType%eam_Z_r)  
543 <    if(associated(thisEAMType%eam_F_rho)) deallocate(thisEAMType%eam_F_rho)
544 <    if(associated(thisEAMType%eam_rhovals)) deallocate(thisEAMType%eam_rhovals)
545 <    if(associated(thisEAMType%eam_rvals)) deallocate(thisEAMType%eam_rvals)
347 >    call deleteSpline(thisEAMType%F)
348 >    call deleteSpline(thisEAMType%rho)
349 >    call deleteSpline(thisEAMType%phi)
350 >    call deleteSpline(thisEAMType%Z)
351  
352    end subroutine deallocate_EAMType
353  
354    !! Calculates rho_r
355    subroutine calc_eam_prepair_rho(atom1,atom2,d,r,rijsq)
356 <    integer :: atom1,atom2
356 >    integer :: atom1, atom2
357      real(kind = dp), dimension(3) :: d
358      real(kind = dp), intent(inout)               :: r
359      real(kind = dp), intent(inout)               :: rijsq
# Line 556 | Line 361 | contains
361      real(kind = dp) :: rho_i_at_j
362      ! value of electron density rho do to atom j at atom i
363      real(kind = dp) :: rho_j_at_i
559 –
560 –    ! we don't use the derivatives, dummy variables
561 –    real( kind = dp) :: drho,d2rho
364      integer :: eam_err
365 +    
366 +    integer :: atid1, atid2 ! Global atid    
367 +    integer :: myid_atom1 ! EAM atid
368 +    integer :: myid_atom2
369  
564 –    integer :: myid_atom1
565 –    integer :: myid_atom2
566 –
370      ! check to see if we need to be cleaned at the start of a force loop
371  
569 –
570 –
571 –
372   #ifdef IS_MPI
373 <    myid_atom1 = atid_Row(atom1)
374 <    myid_atom2 = atid_Col(atom2)
373 >    Atid1 = Atid_row(Atom1)
374 >    Atid2 = Atid_col(Atom2)
375   #else
376 <    myid_atom1 = atid(atom1)
377 <    myid_atom2 = atid(atom2)
376 >    Atid1 = Atid(Atom1)
377 >    Atid2 = Atid(Atom2)
378   #endif
379  
380 +    Myid_atom1 = Eamlist%atidtoeamtype(Atid1)
381 +    Myid_atom2 = Eamlist%atidtoeamtype(Atid2)
382 +
383      if (r.lt.EAMList%EAMParams(myid_atom1)%eam_rcut) then
384  
385 +       call lookupEAMSpline(EAMList%EAMParams(myid_atom1)%rho, r, &
386 +            rho_i_at_j)
387  
583 –
584 –       call eam_splint(EAMList%EAMParams(myid_atom1)%eam_nr, &
585 –            EAMList%EAMParams(myid_atom1)%eam_rvals, &
586 –            EAMList%EAMParams(myid_atom1)%eam_rho_r, &
587 –            EAMList%EAMParams(myid_atom1)%eam_rho_r_pp, &
588 –            r, rho_i_at_j,drho,d2rho)
589 –
590 –
591 –
388   #ifdef  IS_MPI
389         rho_col(atom2) = rho_col(atom2) + rho_i_at_j
390   #else
391         rho(atom2) = rho(atom2) + rho_i_at_j
392   #endif
597 –       !       write(*,*) atom1,atom2,r,rho_i_at_j
393      endif
394  
395      if (r.lt.EAMList%EAMParams(myid_atom2)%eam_rcut) then
601 –       call eam_splint(EAMList%EAMParams(myid_atom2)%eam_nr, &
602 –            EAMList%EAMParams(myid_atom2)%eam_rvals, &
603 –            EAMList%EAMParams(myid_atom2)%eam_rho_r, &
604 –            EAMList%EAMParams(myid_atom2)%eam_rho_r_pp, &
605 –            r, rho_j_at_i,drho,d2rho)
396  
397 +       call lookupEAMSpline(EAMList%EAMParams(myid_atom2)%rho, r, &
398 +            rho_j_at_i)
399  
608 –
609 –
400   #ifdef  IS_MPI
401         rho_row(atom1) = rho_row(atom1) + rho_j_at_i
402   #else
403         rho(atom1) = rho(atom1) + rho_j_at_i
404   #endif
405      endif
616 –
617 –
618 –
619 –
620 –
621 –
406    end subroutine calc_eam_prepair_rho
407  
408  
625 –
626 –
409    !! Calculate the functional F(rho) for all local atoms
410 <  subroutine calc_eam_preforce_Frho(nlocal,pot)
410 >  subroutine calc_eam_preforce_Frho(nlocal, pot)
411      integer :: nlocal
412      real(kind=dp) :: pot
413 <    integer :: i,j
413 >    integer :: i, j
414      integer :: atom
415 <    real(kind=dp) :: U,U1,U2
415 >    real(kind=dp) :: U,U1
416      integer :: atype1
417 <    integer :: me
636 <    integer :: n_rho_points
417 >    integer :: me, atid1
418  
638 –
419      cleanme = .true.
420 <    !! Scatter the electron density from  pre-pair calculation back to local atoms
420 >    !! Scatter the electron density from  pre-pair calculation back to
421 >    !! local atoms
422   #ifdef IS_MPI
423      call scatter(rho_row,rho,plan_atom_row,eam_err)
424      if (eam_err /= 0 ) then
# Line 653 | Line 434 | contains
434      rho(1:nlocal) = rho(1:nlocal) + rho_tmp(1:nlocal)
435   #endif
436  
656 –
657 –
437      !! Calculate F(rho) and derivative
438      do atom = 1, nlocal
439 <       me = atid(atom)
440 <       n_rho_points = EAMList%EAMParams(me)%eam_nrho
662 <       !  Check to see that the density is not greater than the larges rho we have calculated
663 <       if (rho(atom) < EAMList%EAMParams(me)%eam_rhovals(n_rho_points)) then
664 <          call eam_splint(n_rho_points, &
665 <               EAMList%EAMParams(me)%eam_rhovals, &
666 <               EAMList%EAMParams(me)%eam_f_rho, &
667 <               EAMList%EAMParams(me)%eam_f_rho_pp, &
668 <               rho(atom), & ! Actual Rho
669 <               u, u1, u2)
670 <       else
671 <          ! Calculate F(rho with the largest available rho value
672 <          call eam_splint(n_rho_points, &
673 <               EAMList%EAMParams(me)%eam_rhovals, &
674 <               EAMList%EAMParams(me)%eam_f_rho, &
675 <               EAMList%EAMParams(me)%eam_f_rho_pp, &
676 <               EAMList%EAMParams(me)%eam_rhovals(n_rho_points), & ! Largest rho
677 <               u,u1,u2)
678 <       end if
439 >       atid1 = atid(atom)
440 >       me = eamList%atidToEAMtype(atid1)
441  
442 <
442 >       call lookupEAMSpline1d(EAMList%EAMParams(me)%F, rho(atom), &
443 >            u, u1)
444 >      
445         frho(atom) = u
446         dfrhodrho(atom) = u1
683 –       d2frhodrhodrho(atom) = u2
447         pot = pot + u
448  
449      enddo
450  
688 –
689 –
451   #ifdef IS_MPI
452      !! communicate f(rho) and derivatives back into row and column arrays
453      call gather(frho,frho_row,plan_atom_row, eam_err)
# Line 705 | Line 466 | contains
466      if (eam_err /=  0) then
467         call handleError("cal_eam_forces()","MPI gather dfrhodrho_col failure")
468      endif
708 –
709 –
710 –
711 –
712 –
713 –    if (nmflag) then
714 –       call gather(d2frhodrhodrho,d2frhodrhodrho_row,plan_atom_row)
715 –       call gather(d2frhodrhodrho,d2frhodrhodrho_col,plan_atom_col)
716 –    endif
469   #endif
470  
471  
472    end subroutine calc_eam_preforce_Frho
473 <
722 <
723 <
724 <
473 >  
474    !! Does EAM pairwise Force calculation.  
475    subroutine do_eam_pair(atom1, atom2, d, rij, r2, sw, vpair, fpair, &
476         pot, f, do_pot)
# Line 735 | Line 484 | contains
484  
485      logical, intent(in) :: do_pot
486  
487 <    real( kind = dp ) :: drdx,drdy,drdz
488 <    real( kind = dp ) :: d2
489 <    real( kind = dp ) :: phab,pha,dvpdr,d2vpdrdr
490 <    real( kind = dp ) :: rha,drha,d2rha, dpha
742 <    real( kind = dp ) :: rhb,drhb,d2rhb, dphb
487 >    real( kind = dp ) :: drdx, drdy, drdz
488 >    real( kind = dp ) :: phab, pha, dvpdr
489 >    real( kind = dp ) :: rha, drha, dpha
490 >    real( kind = dp ) :: rhb, drhb, dphb
491      real( kind = dp ) :: dudr
492 <    real( kind = dp ) :: rci,rcj
493 <    real( kind = dp ) :: drhoidr,drhojdr
494 <    real( kind = dp ) :: d2rhoidrdr
495 <    real( kind = dp ) :: d2rhojdrdr
748 <    real( kind = dp ) :: Fx,Fy,Fz
749 <    real( kind = dp ) :: r,d2pha,phb,d2phb
492 >    real( kind = dp ) :: rci, rcj
493 >    real( kind = dp ) :: drhoidr, drhojdr
494 >    real( kind = dp ) :: Fx, Fy, Fz
495 >    real( kind = dp ) :: r, phb
496  
497 <    integer :: id1,id2
497 >    integer :: id1, id2
498      integer  :: mytype_atom1
499      integer  :: mytype_atom2
500 +    integer  :: atid1, atid2
501  
755 –    !Local Variables
756 –
757 –    ! write(*,*) "Frho: ", Frho(atom1)
758 –
502      phab = 0.0E0_DP
503      dvpdr = 0.0E0_DP
761 –    d2vpdrdr = 0.0E0_DP
504  
505      if (rij .lt. EAM_rcut) then
506  
507   #ifdef IS_MPI
508 <       mytype_atom1 = atid_row(atom1)
509 <       mytype_atom2 = atid_col(atom2)
508 >       atid1 = atid_row(atom1)
509 >       atid2 = atid_col(atom2)
510   #else
511 <       mytype_atom1 = atid(atom1)
512 <       mytype_atom2 = atid(atom2)
511 >       atid1 = atid(atom1)
512 >       atid2 = atid(atom2)
513   #endif
514 +
515 +       mytype_atom1 = EAMList%atidToEAMType(atid1)
516 +       mytype_atom2 = EAMList%atidTOEAMType(atid2)
517 +
518 +
519         ! get cutoff for atom 1
520         rci = EAMList%EAMParams(mytype_atom1)%eam_rcut
521         ! get type specific cutoff for atom 2
# Line 779 | Line 526 | contains
526         drdz = d(3)/rij
527  
528         if (rij.lt.rci) then
529 <          call eam_splint(EAMList%EAMParams(mytype_atom1)%eam_nr, &
530 <               EAMList%EAMParams(mytype_atom1)%eam_rvals, &
531 <               EAMList%EAMParams(mytype_atom1)%eam_rho_r, &
532 <               EAMList%EAMParams(mytype_atom1)%eam_rho_r_pp, &
533 <               rij, rha,drha,d2rha)
534 <          !! Calculate Phi(r) for atom1.
535 <          call eam_splint(EAMList%EAMParams(mytype_atom1)%eam_nr, &
536 <               EAMList%EAMParams(mytype_atom1)%eam_rvals, &
537 <               EAMList%EAMParams(mytype_atom1)%eam_phi_r, &
538 <               EAMList%EAMParams(mytype_atom1)%eam_phi_r_pp, &
539 <               rij, pha,dpha,d2pha)
529 >
530 >          ! Calculate rho and drho for atom1
531 >
532 >          call lookupEAMSpline1d(EAMList%EAMParams(mytype_atom1)%rho, &
533 >               rij, rha, drha)
534 >          
535 >          ! Calculate Phi(r) for atom1.
536 >          
537 >          call lookupEAMSpline1d(EAMList%EAMParams(mytype_atom1)%phi, &
538 >               rij, pha, dpha)
539 >
540         endif
541  
542         if (rij.lt.rcj) then      
796 –          ! Calculate rho,drho and d2rho for atom1
797 –          call eam_splint(EAMList%EAMParams(mytype_atom2)%eam_nr, &
798 –               EAMList%EAMParams(mytype_atom2)%eam_rvals, &
799 –               EAMList%EAMParams(mytype_atom2)%eam_rho_r, &
800 –               EAMList%EAMParams(mytype_atom2)%eam_rho_r_pp, &
801 –               rij, rhb,drhb,d2rhb)
543  
544 <          !! Calculate Phi(r) for atom2.
545 <          call eam_splint(EAMList%EAMParams(mytype_atom2)%eam_nr, &
546 <               EAMList%EAMParams(mytype_atom2)%eam_rvals, &
547 <               EAMList%EAMParams(mytype_atom2)%eam_phi_r, &
548 <               EAMList%EAMParams(mytype_atom2)%eam_phi_r_pp, &
549 <               rij, phb,dphb,d2phb)
544 >          ! Calculate rho and drho for atom2
545 >
546 >          call lookupEAMSpline1d(EAMList%EAMParams(mytype_atom2)%rho, &
547 >               rij, rhb, drhb)
548 >
549 >          ! Calculate Phi(r) for atom2.
550 >
551 >          call lookupEAMSpline1d(EAMList%EAMParams(mytype_atom2)%phi, &
552 >               rij, phb, dphb)
553 >
554         endif
555  
556         if (rij.lt.rci) then
557            phab = phab + 0.5E0_DP*(rhb/rha)*pha
558            dvpdr = dvpdr + 0.5E0_DP*((rhb/rha)*dpha + &
559                 pha*((drhb/rha) - (rhb*drha/rha/rha)))
815 –          d2vpdrdr = d2vpdrdr + 0.5E0_DP*((rhb/rha)*d2pha + &
816 –               2.0E0_DP*dpha*((drhb/rha) - (rhb*drha/rha/rha)) + &
817 –               pha*((d2rhb/rha) - 2.0E0_DP*(drhb*drha/rha/rha) + &
818 –               (2.0E0_DP*rhb*drha*drha/rha/rha/rha) - (rhb*d2rha/rha/rha)))
560         endif
561  
562         if (rij.lt.rcj) then
563            phab = phab + 0.5E0_DP*(rha/rhb)*phb
564            dvpdr = dvpdr + 0.5E0_DP*((rha/rhb)*dphb + &
565                 phb*((drha/rhb) - (rha*drhb/rhb/rhb)))
825 –          d2vpdrdr = d2vpdrdr + 0.5E0_DP*((rha/rhb)*d2phb + &
826 –               2.0E0_DP*dphb*((drha/rhb) - (rha*drhb/rhb/rhb)) + &
827 –               phb*((d2rha/rhb) - 2.0E0_DP*(drha*drhb/rhb/rhb) + &
828 –               (2.0E0_DP*rha*drhb*drhb/rhb/rhb/rhb) - (rha*d2rhb/rhb/rhb)))
566         endif
567  
568         drhoidr = drha
569         drhojdr = drhb
570  
834 –       d2rhoidrdr = d2rha
835 –       d2rhojdrdr = d2rhb
836 –
837 –
571   #ifdef IS_MPI
572         dudr = drhojdr*dfrhodrho_row(atom1)+drhoidr*dfrhodrho_col(atom2) &
573              + dvpdr
# Line 842 | Line 575 | contains
575   #else
576         dudr = drhojdr*dfrhodrho(atom1)+drhoidr*dfrhodrho(atom2) &
577              + dvpdr
845 –       ! write(*,*) "Atom1,Atom2, dfrhodrho(atom1) dfrhodrho(atom2): ", atom1,atom2,dfrhodrho(atom1),dfrhodrho(atom2)
578   #endif
579  
580         fx = dudr * drdx
# Line 852 | Line 584 | contains
584  
585   #ifdef IS_MPI
586         if (do_pot) then
587 <          pot_Row(atom1) = pot_Row(atom1) + phab*0.5
588 <          pot_Col(atom2) = pot_Col(atom2) + phab*0.5
587 >          pot_Row(METALLIC_POT,atom1) = pot_Row(METALLIC_POT,atom1) + phab*0.5
588 >          pot_Col(METALLIC_POT,atom2) = pot_Col(METALLIC_POT,atom2) + phab*0.5
589         end if
590  
591         f_Row(1,atom1) = f_Row(1,atom1) + fx
# Line 879 | Line 611 | contains
611   #endif
612  
613         vpair = vpair + phab
614 +
615   #ifdef IS_MPI
616         id1 = AtomRowToGlobal(atom1)
617         id2 = AtomColToGlobal(atom2)
# Line 894 | Line 627 | contains
627            fpair(3) = fpair(3) + fz
628  
629         endif
897 –
898 –       if (nmflag) then
899 –
900 –          drhoidr = drha
901 –          drhojdr = drhb
902 –          d2rhoidrdr = d2rha
903 –          d2rhojdrdr = d2rhb
904 –
905 – #ifdef IS_MPI
906 –          d2 = d2vpdrdr + &
907 –               d2rhoidrdr*dfrhodrho_col(atom2) + &
908 –               d2rhojdrdr*dfrhodrho_row(atom1) + &
909 –               drhoidr*drhoidr*d2frhodrhodrho_col(atom2) + &
910 –               drhojdr*drhojdr*d2frhodrhodrho_row(atom1)
911 –
912 – #else
913 –
914 –          d2 = d2vpdrdr + &
915 –               d2rhoidrdr*dfrhodrho(atom2) + &
916 –               d2rhojdrdr*dfrhodrho(atom1) + &
917 –               drhoidr*drhoidr*d2frhodrhodrho(atom2) + &
918 –               drhojdr*drhojdr*d2frhodrhodrho(atom1)
919 – #endif
920 –       end if
921 –
630      endif
631    end subroutine do_eam_pair
632  
633 +  subroutine lookupEAMSpline(cs, xval, yval)
634 +    
635 +    implicit none
636  
637 <  subroutine eam_splint(nx, xa, ya, yppa, x, y, dy, d2y)
637 >    type (cubicSpline), intent(in) :: cs
638 >    real( kind = DP ), intent(in)  :: xval
639 >    real( kind = DP ), intent(out) :: yval
640 >    real( kind = DP ) ::  dx
641 >    integer :: i, j
642 >    !
643 >    !  Find the interval J = [ cs%x(J), cs%x(J+1) ] that contains
644 >    !  or is nearest to xval.
645 >    
646 >    j = MAX(1, MIN(cs%n-1, int((xval-cs%x(1)) * cs%dx_i) + 1))
647 >    
648 >    dx = xval - cs%x(j)
649 >    yval = cs%y(j) + dx*(cs%b(j) + dx*(cs%c(j) + dx*cs%d(j)))
650 >    
651 >    return
652 >  end subroutine lookupEAMSpline
653  
654 <    integer :: atype, nx, j
655 <    real( kind = DP ), dimension(:) :: xa
656 <    real( kind = DP ), dimension(:) :: ya
931 <    real( kind = DP ), dimension(:) :: yppa
932 <    real( kind = DP ) :: x, y
933 <    real( kind = DP ) :: dy, d2y
934 <    real( kind = DP ) :: del, h, a, b, c, d
935 <    integer :: pp_arraySize
654 >  subroutine lookupEAMSpline1d(cs, xval, yval, dydx)
655 >    
656 >    implicit none
657  
658 +    type (cubicSpline), intent(in) :: cs
659 +    real( kind = DP ), intent(in)  :: xval
660 +    real( kind = DP ), intent(out) :: yval, dydx
661 +    real( kind = DP ) :: dx
662 +    integer :: i, j
663 +    
664 +    !  Find the interval J = [ cs%x(J), cs%x(J+1) ] that contains
665 +    !  or is nearest to xval.
666  
938 –    ! this spline code assumes that the x points are equally spaced
939 –    ! do not attempt to use this code if they are not.
667  
668 +    j = MAX(1, MIN(cs%n-1, int((xval-cs%x(1)) * cs%dx_i) + 1))
669 +    
670 +    dx = xval - cs%x(j)
671 +    yval = cs%y(j) + dx*(cs%b(j) + dx*(cs%c(j) + dx*cs%d(j)))
672  
673 <    ! find the closest point with a value below our own:
674 <    j = FLOOR(real((nx-1),kind=dp) * (x - xa(1)) / (xa(nx) - xa(1))) + 1
673 >    dydx = cs%b(j) + dx*(2.0d0 * cs%c(j) + 3.0d0 * dx * cs%d(j))
674 >      
675 >    return
676 >  end subroutine lookupEAMSpline1d
677  
945 –    ! check to make sure we're inside the spline range:
946 –    if ((j.gt.nx).or.(j.lt.1)) then
947 –       write(errMSG,*) "EAM_splint: x is outside bounds of spline: ",x,j
948 –       call handleError(routineName,errMSG)
949 –    endif
950 –    ! check to make sure we haven't screwed up the calculation of j:
951 –    if ((x.lt.xa(j)).or.(x.gt.xa(j+1))) then
952 –       if (j.ne.nx) then
953 –          write(errMSG,*) "EAM_splint:",x," x is outside bounding range"
954 –          call handleError(routineName,errMSG)
955 –       endif
956 –    endif
957 –
958 –    del = xa(j+1) - x
959 –    h = xa(j+1) - xa(j)
960 –
961 –    a = del / h
962 –    b = 1.0E0_DP - a
963 –    c = a*(a*a - 1.0E0_DP)*h*h/6.0E0_DP
964 –    d = b*(b*b - 1.0E0_DP)*h*h/6.0E0_DP
965 –
966 –    y = a*ya(j) + b*ya(j+1) + c*yppa(j) + d*yppa(j+1)
967 –
968 –    dy = (ya(j+1)-ya(j))/h &
969 –         - (3.0E0_DP*a*a - 1.0E0_DP)*h*yppa(j)/6.0E0_DP &
970 –         + (3.0E0_DP*b*b - 1.0E0_DP)*h*yppa(j+1)/6.0E0_DP
971 –
972 –
973 –    d2y = a*yppa(j) + b*yppa(j+1)
974 –
975 –
976 –  end subroutine eam_splint
977 –
978 –
979 –  subroutine eam_spline(nx, xa, ya, yppa, yp1, ypn, boundary)
980 –
981 –
982 –    ! yp1 and ypn are the first derivatives of y at the two endpoints
983 –    ! if boundary is 'L' the lower derivative is used
984 –    ! if boundary is 'U' the upper derivative is used
985 –    ! if boundary is 'B' then both derivatives are used
986 –    ! if boundary is anything else, then both derivatives are assumed to be 0
987 –
988 –    integer :: nx, i, k, max_array_size
989 –
990 –    real( kind = DP ), dimension(:)        :: xa
991 –    real( kind = DP ), dimension(:)        :: ya
992 –    real( kind = DP ), dimension(:)        :: yppa
993 –    real( kind = DP ), dimension(size(xa)) :: u
994 –    real( kind = DP ) :: yp1,ypn,un,qn,sig,p
995 –    character(len=*) :: boundary
996 –
997 –    ! make sure the sizes match
998 –    if ((nx /= size(xa)) .or. (nx /= size(ya))) then
999 –       call handleWarning("EAM_SPLINE","Array size mismatch")
1000 –    end if
1001 –
1002 –    if ((boundary.eq.'l').or.(boundary.eq.'L').or. &
1003 –         (boundary.eq.'b').or.(boundary.eq.'B')) then
1004 –       yppa(1) = -0.5E0_DP
1005 –       u(1) = (3.0E0_DP/(xa(2)-xa(1)))*((ya(2)-&
1006 –            ya(1))/(xa(2)-xa(1))-yp1)
1007 –    else
1008 –       yppa(1) = 0.0E0_DP
1009 –       u(1)  = 0.0E0_DP
1010 –    endif
1011 –
1012 –    do i = 2, nx - 1
1013 –       sig = (xa(i) - xa(i-1)) / (xa(i+1) - xa(i-1))
1014 –       p = sig * yppa(i-1) + 2.0E0_DP
1015 –       yppa(i) = (sig - 1.0E0_DP) / p
1016 –       u(i) = (6.0E0_DP*((ya(i+1)-ya(i))/(xa(i+1)-xa(i)) - &
1017 –            (ya(i)-ya(i-1))/(xa(i)-xa(i-1)))/ &
1018 –            (xa(i+1)-xa(i-1)) - sig * u(i-1))/p
1019 –    enddo
1020 –
1021 –    if ((boundary.eq.'u').or.(boundary.eq.'U').or. &
1022 –         (boundary.eq.'b').or.(boundary.eq.'B')) then
1023 –       qn = 0.5E0_DP
1024 –       un = (3.0E0_DP/(xa(nx)-xa(nx-1)))* &
1025 –            (ypn-(ya(nx)-ya(nx-1))/(xa(nx)-xa(nx-1)))
1026 –    else
1027 –       qn = 0.0E0_DP
1028 –       un = 0.0E0_DP
1029 –    endif
1030 –
1031 –    yppa(nx)=(un-qn*u(nx-1))/(qn*yppa(nx-1)+1.0E0_DP)
1032 –
1033 –    do k = nx-1, 1, -1
1034 –       yppa(k)=yppa(k)*yppa(k+1)+u(k)
1035 –    enddo
1036 –
1037 –  end subroutine eam_spline
1038 –
678   end module eam

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines