1 |
|
module simulation |
2 |
|
use definitions, ONLY :dp |
3 |
+ |
#ifdef IS_MPI |
4 |
+ |
use mpiSimulation |
5 |
+ |
#endif |
6 |
+ |
|
7 |
|
implicit none |
8 |
|
PRIVATE |
9 |
|
|
10 |
+ |
#define __FORTRAN90 |
11 |
+ |
#include "../headers/fsimulation.h" |
12 |
|
|
13 |
+ |
type (simtype), public :: thisSim |
14 |
+ |
!! Tag for MPI calculations |
15 |
+ |
integer, allocatable, dimension(:) :: tag |
16 |
|
|
17 |
< |
real ( kind = dp ), dimension(3) :: box |
17 |
> |
#ifdef IS_MPI |
18 |
> |
integer, allocatable, dimension(:) :: tag_row |
19 |
> |
integer, allocatable, dimension(:) :: tag_column |
20 |
> |
#endif |
21 |
|
|
22 |
+ |
!! WARNING: use_pbc hardcoded, fixme |
23 |
+ |
logical :: setSim = .false. |
24 |
|
|
25 |
+ |
!! array for saving previous positions for neighbor lists. |
26 |
+ |
real( kind = dp ), allocatable,dimension(:,:),save :: q0 |
27 |
|
|
12 |
– |
|
28 |
|
|
29 |
+ |
public :: check |
30 |
+ |
public :: save_nlist |
31 |
+ |
public :: wrap |
32 |
+ |
public :: getBox |
33 |
+ |
public :: getRcut |
34 |
+ |
public :: getRlist |
35 |
+ |
public :: getNlocal |
36 |
+ |
public :: setSimulation |
37 |
+ |
public :: isEnsemble |
38 |
+ |
public :: isPBC |
39 |
+ |
public :: getStringLen |
40 |
+ |
public :: returnMixingRules |
41 |
+ |
|
42 |
+ |
! public :: setRcut |
43 |
+ |
|
44 |
+ |
interface wrap |
45 |
+ |
module procedure wrap_1d |
46 |
+ |
module procedure wrap_3d |
47 |
+ |
end interface |
48 |
+ |
|
49 |
+ |
interface getBox |
50 |
+ |
module procedure getBox_3d |
51 |
+ |
module procedure getBox_dim |
52 |
+ |
end interface |
53 |
+ |
|
54 |
+ |
|
55 |
+ |
|
56 |
+ |
|
57 |
+ |
|
58 |
+ |
|
59 |
+ |
|
60 |
+ |
|
61 |
+ |
|
62 |
+ |
|
63 |
|
contains |
64 |
|
|
65 |
+ |
subroutine setSimulation(nLRParticles,box,rlist,rcut,ensemble,mixingRule,use_pbc) |
66 |
+ |
integer, intent(in) :: nLRParticles |
67 |
+ |
real(kind = dp ), intent(in), dimension(3) :: box |
68 |
+ |
real(kind = dp ), intent(in) :: rlist |
69 |
+ |
real(kind = dp ), intent(in) :: rcut |
70 |
+ |
character( len = stringLen), intent(in) :: ensemble |
71 |
+ |
character( len = stringLen), intent(in) :: mixingRule |
72 |
+ |
logical, intent(in) :: use_pbc |
73 |
+ |
integer :: alloc_stat |
74 |
+ |
if( setsim ) return ! simulation is already initialized |
75 |
+ |
setSim = .true. |
76 |
|
|
77 |
< |
subroutine set_simulation(box,rlist,rcut) |
77 |
> |
thisSim%nLRParticles = nLRParticles |
78 |
> |
thisSim%box = box |
79 |
> |
thisSim%rlist = rlist |
80 |
> |
thisSIm%rlistsq = rlist * rlist |
81 |
> |
thisSim%rcut = rcut |
82 |
> |
thisSim%rcutsq = rcut * rcut |
83 |
> |
thisSim%rcut6 = thisSim%rcutsq * thisSim%rcutsq * thisSim%rcutsq |
84 |
|
|
85 |
+ |
thisSim%ensemble = ensemble |
86 |
+ |
thisSim%mixingRule = mixingRule |
87 |
+ |
thisSim%use_pbc = use_pbc |
88 |
|
|
89 |
+ |
if (.not. allocated(q0)) then |
90 |
+ |
allocate(q0(3,nLRParticles),stat=alloc_stat) |
91 |
+ |
endif |
92 |
+ |
end subroutine setSimulation |
93 |
|
|
94 |
< |
end subroutine set_simulation |
94 |
> |
function getNparticles() result(nparticles) |
95 |
> |
integer :: nparticles |
96 |
> |
nparticles = thisSim%nLRparticles |
97 |
> |
end function getNparticles |
98 |
|
|
99 |
|
|
24 |
– |
|
100 |
|
subroutine change_box_size(new_box_size) |
101 |
|
real(kind=dp), dimension(3) :: new_box_size |
102 |
|
|
103 |
< |
box = new_box_size |
103 |
> |
thisSim%box = new_box_size |
104 |
|
|
105 |
|
end subroutine change_box_size |
106 |
|
|
107 |
|
|
108 |
+ |
function getBox_3d() result(thisBox) |
109 |
+ |
real( kind = dp ), dimension(3) :: thisBox |
110 |
+ |
thisBox = thisSim%box |
111 |
+ |
end function getBox_3d |
112 |
+ |
|
113 |
+ |
function getBox_dim(dim) result(thisBox) |
114 |
+ |
integer, intent(in) :: dim |
115 |
+ |
real( kind = dp ) :: thisBox |
116 |
+ |
|
117 |
+ |
thisBox = thisSim%box(dim) |
118 |
+ |
end function getBox_dim |
119 |
+ |
|
120 |
+ |
subroutine check(q,update_nlist) |
121 |
+ |
real( kind = dp ), dimension(:,:) :: q |
122 |
+ |
integer :: i |
123 |
+ |
real( kind = DP ) :: dispmx |
124 |
+ |
logical, intent(out) :: update_nlist |
125 |
+ |
real( kind = DP ) :: dispmx_tmp |
126 |
+ |
real( kind = dp ) :: skin_thickness |
127 |
+ |
integer :: natoms |
128 |
+ |
|
129 |
+ |
natoms = thisSim%nLRparticles |
130 |
+ |
skin_thickness = thisSim%rlist - thisSim%rcut |
131 |
+ |
dispmx = 0.0E0_DP |
132 |
+ |
!! calculate the largest displacement of any atom in any direction |
133 |
+ |
|
134 |
+ |
#ifdef MPI |
135 |
+ |
dispmx_tmp = 0.0E0_DP |
136 |
+ |
do i = 1, thisSim%nLRparticles |
137 |
+ |
dispmx_tmp = max( abs ( q(1,i) - q0(1,i) ), dispmx ) |
138 |
+ |
dispmx_tmp = max( abs ( q(2,i) - q0(2,i) ), dispmx ) |
139 |
+ |
dispmx_tmp = max( abs ( q(3,i) - q0(3,i) ), dispmx ) |
140 |
+ |
end do |
141 |
+ |
call mpi_allreduce(dispmx_tmp,dispmx,1,mpi_double_precision, & |
142 |
+ |
mpi_max,mpi_comm_world,mpi_err) |
143 |
+ |
#else |
144 |
+ |
|
145 |
+ |
do i = 1, thisSim%nLRparticles |
146 |
+ |
dispmx = max( abs ( q(1,i) - q0(1,i) ), dispmx ) |
147 |
+ |
dispmx = max( abs ( q(2,i) - q0(2,i) ), dispmx ) |
148 |
+ |
dispmx = max( abs ( q(3,i) - q0(3,i) ), dispmx ) |
149 |
+ |
end do |
150 |
+ |
#endif |
151 |
+ |
|
152 |
+ |
!! a conservative test of list skin crossings |
153 |
+ |
dispmx = 2.0E0_DP * sqrt (3.0E0_DP * dispmx * dispmx) |
154 |
+ |
|
155 |
+ |
update_nlist = (dispmx.gt.(skin_thickness)) |
156 |
+ |
|
157 |
+ |
end subroutine check |
158 |
+ |
|
159 |
+ |
subroutine save_nlist(q) |
160 |
+ |
real(kind = dp ), dimension(:,:), intent(in) :: q |
161 |
+ |
integer :: list_size |
162 |
+ |
|
163 |
+ |
|
164 |
+ |
list_size = size(q) |
165 |
+ |
|
166 |
+ |
if (.not. allocated(q0)) then |
167 |
+ |
allocate(q0(3,list_size)) |
168 |
+ |
else if( list_size > size(q0)) then |
169 |
+ |
deallocate(q0) |
170 |
+ |
allocate(q0(3,list_size)) |
171 |
+ |
endif |
172 |
+ |
|
173 |
+ |
q0 = q |
174 |
+ |
|
175 |
+ |
end subroutine save_nlist |
176 |
+ |
|
177 |
+ |
|
178 |
+ |
function wrap_1d(r,dim) result(this_wrap) |
179 |
+ |
|
180 |
+ |
|
181 |
+ |
real( kind = DP ) :: r |
182 |
+ |
real( kind = DP ) :: this_wrap |
183 |
+ |
integer :: dim |
184 |
+ |
|
185 |
+ |
if (use_pbc) then |
186 |
+ |
! this_wrap = r - box(dim)*dsign(1.0E0_DP,r)*int(abs(r/box(dim)) + 0.5E0_DP) |
187 |
+ |
this_wrap = r - thisSim%box(dim)*nint(r/thisSim%box(dim)) |
188 |
+ |
else |
189 |
+ |
this_wrap = r |
190 |
+ |
endif |
191 |
+ |
|
192 |
+ |
return |
193 |
+ |
end function wrap_1d |
194 |
+ |
|
195 |
+ |
function wrap_3d(r) result(this_wrap) |
196 |
+ |
real( kind = dp ), dimension(3), intent(in) :: r |
197 |
+ |
real( kind = dp ), dimension(3) :: this_wrap |
198 |
+ |
|
199 |
+ |
|
200 |
+ |
if (this_sim%use_pbc) then |
201 |
+ |
! this_wrap = r - box(dim)*dsign(1.0E0_DP,r)*int(abs(r/box(dim)) + 0.5E0_DP) |
202 |
+ |
this_wrap = r - thisSim%box*nint(r/thisSim%box) |
203 |
+ |
else |
204 |
+ |
this_wrap = r |
205 |
+ |
endif |
206 |
+ |
end function wrap_3d |
207 |
+ |
|
208 |
+ |
|
209 |
+ |
|
210 |
+ |
subroutine getRcut(thisrcut,rcut2,rcut6,status) |
211 |
+ |
real( kind = dp ), intent(out) :: thisrcut |
212 |
+ |
real( kind = dp ), intent(out), optional :: rcut2 |
213 |
+ |
real( kind = dp ), intent(out), optional :: rcut6 |
214 |
+ |
integer, optional :: status |
215 |
+ |
|
216 |
+ |
if (present(status)) status = 0 |
217 |
+ |
|
218 |
+ |
if (.not.setSim ) then |
219 |
+ |
if (present(status)) status = -1 |
220 |
+ |
return |
221 |
+ |
end if |
222 |
+ |
|
223 |
+ |
thisrcut = thisSim%rcut |
224 |
+ |
if(present(rcut2)) rcut2 = thisSim%rcutsq |
225 |
+ |
if(present(rcut6)) rcut6 = thisSim%rcut6 |
226 |
+ |
|
227 |
+ |
end subroutine getRcut |
228 |
+ |
|
229 |
+ |
|
230 |
+ |
|
231 |
+ |
|
232 |
+ |
subroutine getRlist(thisrlist,rlist2,status) |
233 |
+ |
real( kind = dp ), intent(out) :: thisrlist |
234 |
+ |
real( kind = dp ), intent(out), optional :: rlist2 |
235 |
+ |
|
236 |
+ |
integer, optional :: status |
237 |
+ |
|
238 |
+ |
if (present(status)) status = 0 |
239 |
+ |
|
240 |
+ |
if (.not.setSim ) then |
241 |
+ |
if (present(status)) status = -1 |
242 |
+ |
return |
243 |
+ |
end if |
244 |
+ |
|
245 |
+ |
thisrlist = thisSim%rlist |
246 |
+ |
if(present(rlist2)) rlist2 = thisSim%rlistsq |
247 |
+ |
|
248 |
+ |
|
249 |
+ |
end subroutine getRlist |
250 |
+ |
|
251 |
+ |
|
252 |
+ |
|
253 |
+ |
pure function getNlocal() result(nlocal) |
254 |
+ |
integer :: nlocal |
255 |
+ |
nlocal = thisSim%nLRparticles |
256 |
+ |
end function getNlocal |
257 |
+ |
|
258 |
+ |
|
259 |
+ |
function isEnsemble(this_ensemble) result(is_this_ensemble) |
260 |
+ |
character(len = *) :: this_ensemble |
261 |
+ |
logical :: is_this_enemble |
262 |
+ |
is_this_ensemble = .false. |
263 |
+ |
if (this_ensemble == thisSim%ensemble) is_this_ensemble = .true. |
264 |
+ |
end function isEnsemble |
265 |
+ |
|
266 |
+ |
function returnEnsemble() result(thisEnsemble) |
267 |
+ |
character (len = len(thisSim%ensemble)) :: thisEnsemble |
268 |
+ |
thisEnsemble = thisSim%ensemble |
269 |
+ |
end function returnEnsemble |
270 |
+ |
|
271 |
+ |
function returnMixingRules() result(thisMixingRule) |
272 |
+ |
character (len = len(thisSim%ensemble)) :: thisMixingRule |
273 |
+ |
thisMixingRule = thisSim%MixingRule |
274 |
+ |
end function returnMixingRules |
275 |
+ |
|
276 |
+ |
function isPBC() result(PBCset) |
277 |
+ |
logical :: PBCset |
278 |
+ |
PBCset = .false. |
279 |
+ |
if (thisSim%use_pbc) PBCset = .true. |
280 |
+ |
end function isPBC |
281 |
+ |
|
282 |
+ |
pure function getStringLen() result (thislen) |
283 |
+ |
integer :: thislen |
284 |
+ |
thislen = string_len |
285 |
+ |
end function setStringLen |
286 |
+ |
|
287 |
|
end module simulation |