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source: palm/trunk/SOURCE/pmc_particle_interface.f90 @ 4592

Last change on this file since 4592 was 4444, checked in by raasch, 5 years ago
bugfix: cpp-directives for serial mode added
Property svn:keywords set to `Id`
File size: 46.1 KB

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1	MODULE pmc_particle_interface
2
3	!------------------------------------------------------------------------------!
4	! This file is part of PALM.
5	!
6	! PALM is free software: you can redistribute it and/or modify it under the
7	! terms of the GNU General Public License as published by the Free Software
8	! Foundation, either version 3 of the License, or (at your option) any later
9	! version.
10	!
11	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
12	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14	!
15	! You should have received a copy of the GNU General Public License along with
16	! PALM. If not, see <http://www.gnu.org/licenses/>.
17	!
18	! Copyright 1997-2020 Leibniz Universitaet Hannover
19	!------------------------------------------------------------------------------!
20	!
21	! Current revisions:
22	! ------------------
23	!
24	!
25	! Former revisions:
26	! -----------------!
27	! $Id: pmc_particle_interface.f90 4444 2020-03-05 15:59:50Z raasch $
28	! bugfix: preprocessor directives for serial mode added
29	!
30	! 4360 2020-01-07 11:25:50Z suehring
31	! Corrected "Former revisions" section
32	!
33	! 4043 2019-06-18 16:59:00Z schwenkel
34	! Remove min_nr_particle
35	!
36	! 4017 2019-06-06 12:16:46Z schwenkel
37	! coarse bound renamed as parent_bound and icl, icr, jcs, jcn as ipl, ipr, jps, jpn.
38	!
39	! 3883 2019-04-10 12:51:50Z hellstea
40	! Function get_number_of_childs renamed to get_number_of_children and cg
41	! renamed to pg according to their definitions in pmc_interface_mod
42	!
43	! 3655 2019-01-07 16:51:22Z knoop
44	! unused variables removed
45	!
46	! Initial Version (by Klaus Ketelsen)
47	!
48	!
49	! Description:
50	! ------------
51	! Introduce particle transfer in nested models.
52	! Interface to palm lpm model to handel particle transfer between parent and
53	! child model.
54	!------------------------------------------------------------------------------!
55	#if defined( __parallel )
56
57	USE, INTRINSIC :: ISO_C_BINDING
58
59	#if defined( __parallel ) && !defined( __mpifh )
60	USE MPI
61	#endif
62
63	USE kinds
64
65	USE pegrid, &
66	ONLY: myidx,myidy
67
68	USE indices, &
69	ONLY: nx, ny, nxl, nxr, nys, nyn, nzb, nzt, nxlg, nxrg, nysg, nyng, nbgp
70
71	USE grid_variables, &
72	ONLY: dx, dy
73
74	USE arrays_3d, &
75	ONLY: zw
76
77	USE control_parameters, &
78	ONLY: message_string
79
80	USE particle_attributes, &
81	ONLY: prt_count, particles, grid_particles, &
82	particle_type, number_of_particles, zero_particle, &
83	ibc_par_t, ibc_par_lr, ibc_par_ns, alloc_factor
84
85	! USE lpm_pack_and_sort_mod
86
87	#if defined( __parallel )
88	USE pmc_general, &
89	ONLY: pedef
90
91	USE pmc_parent, &
92	ONLY: children, pmc_s_fillbuffer, pmc_s_getdata_from_buffer, &
93	pmc_s_get_child_npes
94
95	USE pmc_child, &
96	ONLY: me, pmc_c_getbuffer, pmc_c_putbuffer
97
98	USE pmc_interface, &
99	ONLY: cpl_id, get_number_of_children, nr_part, part_adr, nested_run, &
100	get_childid, get_child_edges, nr_partc, part_adrc, &
101	parent_bound, coord_x, coord_y, pg, get_child_gridspacing, &
102	lower_left_coord_x, lower_left_coord_y
103
104	USE pmc_handle_communicator, &
105	ONLY: pmc_parent_for_child
106
107	USE pmc_mpi_wrapper, &
108	ONLY: pmc_send_to_parent, pmc_recv_from_child
109
110	#endif
111
112	IMPLICIT NONE
113
114	#if defined( __parallel ) && defined( __mpifh )
115	INCLUDE "mpif.h"
116	#endif
117
118	PRIVATE
119	SAVE
120
121	TYPE coarse_particle_def
122	INTEGER(iwp) :: nr_particle
123
124	TYPE(particle_type),ALLOCATABLE,DIMENSION(:) :: parent_particles
125	END TYPE coarse_particle_def
126
127	INTEGER(iwp),PARAMETER :: Min_particles_per_column = 100 !<
128	INTEGER(iwp),PARAMETER :: max_nr_particle_in_rma_win = 100000 !<
129
130	INTEGER(iwp) :: nr_fine_in_coarse !< Number of fine grid cells in coarse grid (one direction)
131	INTEGER(iwp) :: particle_win_child !<
132
133	INTEGER(iwp),ALLOCATABLE,DIMENSION(:) :: particle_win_parent !<
134
135	TYPE(C_PTR), ALLOCATABLE,DIMENSION(:) :: buf_ptr !<
136
137	TYPE(particle_type), DIMENSION(:),POINTER :: particle_in_win !<
138
139	TYPE(coarse_particle_def),ALLOCATABLE,DIMENSION(:,:) :: coarse_particles !<
140
141
142
143	INTERFACE pmcp_g_init
144	MODULE PROCEDURE pmcp_g_init
145	END INTERFACE pmcp_g_init
146
147	INTERFACE pmcp_g_alloc_win
148	MODULE PROCEDURE pmcp_g_alloc_win
149	END INTERFACE pmcp_g_alloc_win
150
151	INTERFACE pmcp_c_get_particle_from_parent
152	MODULE PROCEDURE pmcp_c_get_particle_from_parent
153	END INTERFACE pmcp_c_get_particle_from_parent
154
155	INTERFACE pmcp_c_send_particle_to_parent
156	MODULE PROCEDURE pmcp_c_send_particle_to_parent
157	END INTERFACE pmcp_c_send_particle_to_parent
158
159	INTERFACE pmcp_p_fill_particle_win
160	MODULE PROCEDURE pmcp_p_fill_particle_win
161	END INTERFACE pmcp_p_fill_particle_win
162
163	INTERFACE pmcp_p_empty_particle_win
164	MODULE PROCEDURE pmcp_p_empty_particle_win
165	END INTERFACE pmcp_p_empty_particle_win
166
167	INTERFACE pmcp_g_print_number_of_particles
168	MODULE PROCEDURE pmcp_g_print_number_of_particles
169	END INTERFACE pmcp_g_print_number_of_particles
170
171	INTERFACE pmcp_p_delete_particles_in_fine_grid_area
172	MODULE PROCEDURE pmcp_p_delete_particles_in_fine_grid_area
173	END INTERFACE pmcp_p_delete_particles_in_fine_grid_area
174
175	PUBLIC pmcp_g_init, pmcp_g_alloc_win, pmcp_c_get_particle_from_parent
176	PUBLIC pmcp_c_send_particle_to_parent, pmcp_p_fill_particle_win, pmcp_g_print_number_of_particles
177	PUBLIC pmcp_p_empty_particle_win, pmcp_p_delete_particles_in_fine_grid_area
178
179	CONTAINS
180
181	!------------------------------------------------------------------------------!
182	! Description:
183	! ------------
184	!> general routine:
185	!> Initializing actions of the particle interface
186	!> check particle boundary conditions for the child models
187	!------------------------------------------------------------------------------!
188	SUBROUTINE pmcp_g_init
189
190	IMPLICIT NONE
191
192	INTEGER(iwp) :: nr_childs !< Number of child models of the current model
193
194	#if defined( __parallel )
195
196	nr_childs = get_number_of_children()
197	!
198	!-- Check if the current model has child models
199	IF ( nr_childs > 0 ) THEN
200	ALLOCATE( nr_part(nysg:nyng, nxlg:nxrg) )
201	ALLOCATE( part_adr(nysg:nyng, nxlg:nxrg) )
202	nr_part = 0
203	part_adr = 0
204	ENDIF
205
206	!
207	!-- Set the boundary conditions to nested for all non root (i.e child) models
208	IF ( cpl_id > 1 ) THEN
209
210	IF ( ibc_par_t /= 3 ) THEN
211	ibc_par_t = 3
212	message_string = 'In Child model: ibc_par_t is automatically set to nested '
213	CALL message( 'pmcp_g_init ', 'PA0477', 0, 1, 0, 6, 0 )
214	ENDIF
215
216	IF ( ibc_par_lr /= 3 ) THEN
217	ibc_par_lr = 3
218	message_string = 'In Child model: ibc_par_lr is automatically set to nested '
219	CALL message( 'pmcp_g_init ', 'PA0478', 0, 1, 0, 6, 0 )
220	ENDIF
221
222	IF ( ibc_par_ns /= 3 ) THEN
223	ibc_par_ns = 3
224	message_string = 'In Child model: ibc_par_ns is automatically set to nested '
225	CALL message( 'pmcp_g_init ', 'PA0479', 0, 1, 0, 6, 0 )
226	ENDIF
227
228	ENDIF
229
230	#endif
231	END SUBROUTINE pmcp_g_init
232	!------------------------------------------------------------------------------!
233	! Description:
234	! ------------
235	!> general routine:
236	!> allocate the MPI windows
237	!------------------------------------------------------------------------------!
238	SUBROUTINE pmcp_g_alloc_win
239
240	IMPLICIT NONE
241
242	INTEGER(iwp) :: m !< loop index
243	INTEGER(iwp) :: ierr !< error code
244	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
245	INTEGER(iwp) :: ipr !< right boundary in coarse(parent) index space
246	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
247	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
248	INTEGER(iwp) :: child_id !< Id of a child model
249	INTEGER(iwp) :: nr_childs !< Number of child models of the current model
250
251	INTEGER :: parsize !<
252	TYPE(C_PTR), SAVE :: ptr !<
253
254	TYPE(particle_type),DIMENSION(:),POINTER :: win_buffer !<
255
256	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
257
258	#if defined( __parallel )
259	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
260	INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !<
261
262	!
263	!-- If the model has a parent model prepare the structures for transfer
264	IF ( cpl_id > 1 ) THEN
265
266	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle)/8
267
268	CALL MPI_ALLOC_MEM( parsize_mpi_address_kind , MPI_INFO_NULL, ptr, ierr )
269	parsize = parsize_mpi_address_kind
270	buf_shape(1) = 1
271	CALL C_F_POINTER( ptr, win_buffer, buf_shape )
272	CALL MPI_WIN_CREATE( win_buffer, parsize_mpi_address_kind, parsize, &
273	MPI_INFO_NULL, me%intra_comm, particle_win_child, &
274	ierr )
275
276	!
277	!-- Child domain boundaries in the parent index space
278	ipl = parent_bound(1)
279	ipr = parent_bound(2)
280	jps = parent_bound(3)
281	jpn = parent_bound(4)
282
283	ALLOCATE( coarse_particles(jps:jpn,ipl:ipr) )
284
285	coarse_particles(:,:)%nr_particle = 0
286	ENDIF
287
288	!
289	!-- If the model has child models prepare the structures for transfer
290	nr_childs = get_number_of_children()
291	IF ( nr_childs > 0 ) THEN
292	ALLOCATE( particle_win_parent(nr_childs) )
293	ALLOCATE( buf_ptr(nr_childs) )
294	DO m = 1, nr_childs
295	child_id = get_childid(m)
296	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle)/8
297	parsize = parsize_mpi_address_kind
298
299	winsize = max_nr_particle_in_rma_win * parsize_mpi_address_kind
300	CALL MPI_ALLOC_MEM( winsize , MPI_INFO_NULL, buf_ptr(m), ierr )
301	buf_shape(1) = max_nr_particle_in_rma_win
302	CALL C_F_POINTER( buf_ptr(m), win_buffer, buf_shape )
303	CALL MPI_WIN_CREATE( win_buffer, winsize, parsize, MPI_INFO_NULL, &
304	children(child_id)%intra_comm, &
305	particle_win_parent(m), ierr )
306	ENDDO
307	ENDIF
308
309	#endif
310	END SUBROUTINE pmcp_g_alloc_win
311
312
313	!------------------------------------------------------------------------------!
314	! Description:
315	! ------------
316	!> child routine:
317	!> Read/get particles out of the parent MPI window
318	!------------------------------------------------------------------------------!
319	SUBROUTINE pmcp_c_get_particle_from_parent
320
321	IMPLICIT NONE
322
323	INTEGER(iwp) :: i !< x grid index
324	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
325	INTEGER(iwp) :: ierr !< error code
326	INTEGER(iwp) :: ij !< combined xy index for the buffer array
327	INTEGER(iwp) :: ip !< loop index (child PEs)
328	INTEGER(iwp) :: j !< y grid index
329	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
330	INTEGER(iwp) :: nr !< number of particles to receive from a parent box
331
332	INTEGER :: parsize !<
333
334	#if defined( __parallel )
335	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
336
337	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
338	INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp !<
339
340	IF ( cpl_id > 1 ) THEN
341
342	CALL pmc_c_getbuffer( particle_transfer = .TRUE. ) !Get number of particle/column and offset in RMA window xx
343
344	!
345	!-- Wait for buffer to fill.
346	!
347	!-- The parent side (in pmc_s_fillbuffer) is filling the buffer in the MPI RMA window
348	!-- When the filling is complete, a MPI_BARRIER is called.
349	!-- The child is not allowd to access the parent-buffer before it is completely filled
350	!-- Synchronization is done implicitely in pmc_c_getbuffer and pmc_s_fillbuffer on the parent side
351
352	ipl = parent_bound(1)
353	jps = parent_bound(3)
354
355	DO ip = 1, me%inter_npes
356
357	ape => me%pes(ip)
358
359	DO ij = 1, ape%nrele
360	j = ape%locind(ij)%j + jps - 1
361	i = ape%locind(ij)%i + ipl - 1
362	nr = nr_partc(j,i)
363	IF ( nr > 0 ) THEN
364
365	CALL check_and_alloc_coarse_particle (i, j, nr)
366	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle)/8
367	parsize = parsize_mpi_address_kind
368	target_disp = part_adrc(j,i) - 1
369	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip - 1, 0, &
370	particle_win_child, ierr )
371	CALL MPI_GET( coarse_particles(j,i)%parent_particles, &
372	nr * parsize, MPI_BYTE, ip - 1, target_disp, &
373	nr * parsize, MPI_BYTE, particle_win_child, ierr )
374	CALL MPI_WIN_UNLOCK( ip - 1, particle_win_child, ierr )
375	ENDIF
376	coarse_particles(j,i)%nr_particle = nr
377	ENDDO
378	ENDDO
379
380	CALL c_copy_particle_to_child_grid
381	ENDIF
382
383	#endif
384	END SUBROUTINE pmcp_c_get_particle_from_parent
385
386
387	!------------------------------------------------------------------------------!
388	! Description:
389	! ------------
390	!> child routine:
391	!> Write/put particles into the parent MPI window
392	!------------------------------------------------------------------------------!
393	SUBROUTINE pmcp_c_send_particle_to_parent
394
395	IMPLICIT NONE
396
397	INTEGER(iwp) :: disp_offset !<
398	INTEGER(iwp) :: i !< x loop index
399	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
400	INTEGER(iwp) :: ipr !< right boundary in coarse(parent) index space
401	INTEGER(iwp) :: ierr !< error code
402	INTEGER(iwp) :: ij !< combined xy index for the buffer array
403	INTEGER(iwp) :: ip !< loop index (child PEs)
404	INTEGER(iwp) :: j !< y loop index
405	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
406	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
407	INTEGER(iwp) :: max_nr_particle_per_pe !< maximum number of particles per PE (depending on grid apect ratio)
408	INTEGER(iwp) :: n !< shorter variable name for nr_fine_in_coarse
409	INTEGER(iwp) :: nr !< shorter variabel name for nr_partc
410	INTEGER(iwp) :: pe_offset !< offset index of the current PE
411
412	INTEGER :: parsize !<
413
414	REAL(wp) :: eps=0.00001 !< used in calculations to avoid rounding errors
415	REAL(wp) :: xx !< number of fine grid cells inside a coarse grid cell in x-direction
416	REAL(wp) :: yy !< number of fine grid cells inside a coarse grid cell in y-direction
417
418	! TYPE(particle_type) :: dummy_part !< dummy particle (needed for size calculations)
419
420	#if defined( __parallel )
421	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
422
423	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
424	INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp !<
425
426
427	IF ( cpl_id > 1 ) THEN
428	CALL c_copy_particle_to_coarse_grid
429
430	!
431	!-- Child domain boundaries in the parent index space
432
433	ipl = parent_bound(1)
434	ipr = parent_bound(2)
435	jps = parent_bound(3)
436	jpn = parent_bound(4)
437
438	nr_partc = 0
439
440	DO i = ipl, ipr
441	DO j = jps, jpn
442	nr_partc(j,i) = coarse_particles(j,i)%nr_particle
443	ENDDO
444	ENDDO
445	part_adrc = 0
446
447	!
448	!-- compute number of fine grid cells in coarse grid (one direction)
449	xx = ( pg%dx + eps ) / dx ! +eps to avoid rounding error
450	yy = ( pg%dy + eps ) / dy
451	nr_fine_in_coarse = MAX( INT(xx), INT(yy) )
452
453	IF ( MOD( coord_x(0), pg%dx ) /= 0.0 .OR. MOD( coord_y(0), pg%dy ) /= 0.0 ) THEN
454	nr_fine_in_coarse = nr_fine_in_coarse + 1
455	ENDIF
456
457	!
458	!-- Assign a number to my child PE to select different areas in the RMA window on server side
459	!-- With this number a square of child PEs is defined which share the same coarse grid cells
460
461	n = nr_fine_in_coarse ! local variable n to make folloing statements shorter
462	pe_offset = MOD( myidx, n ) * n + MOD( myidy, n)
463	max_nr_particle_per_pe = max_nr_particle_in_rma_win / ( n * n )
464	disp_offset = pe_offset * max_nr_particle_per_pe
465	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle)/8
466	parsize = parsize_mpi_address_kind
467	DO ip = 1, me%inter_npes
468
469	ape => me%pes(ip)
470
471	target_disp = disp_offset
472	DO ij = 1, ape%nrele
473	j = ape%locind(ij)%j + jps - 1
474	i = ape%locind(ij)%i + ipl - 1
475	nr = nr_partc(j,i)
476	IF( nr > 0 ) THEN
477	IF ( target_disp + nr - disp_offset >= max_nr_particle_per_pe ) THEN
478	WRITE(9,*) 'RMA window too small on child ', &
479	target_disp + nr - disp_offset, &
480	max_nr_particle_per_pe, max_nr_particle_in_rma_win
481	message_string = 'RMA window too small on child'
482	CALL message( 'pmci_create_child_arrays', 'PA0480', 3, 2, 0, 6, 0 )
483	ENDIF
484	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip - 1, 0, &
485	particle_win_child, ierr )
486	CALL MPI_PUT( coarse_particles(j,i)%parent_particles, &
487	nr * parsize, MPI_BYTE, ip - 1, target_disp, &
488	nr * parsize, MPI_BYTE, particle_win_child, ierr )
489	CALL MPI_WIN_UNLOCK( ip - 1, particle_win_child, ierr )
490	part_adrc(j,i) = target_disp + 1
491	target_disp = target_disp + nr
492	ENDIF
493	ENDDO
494	ENDDO
495
496	CALL pmc_c_putbuffer ( particle_transfer = .TRUE. ) !Send new number of particle/column and offset to parent
497
498	ENDIF
499
500	#endif
501	END SUBROUTINE pmcp_c_send_particle_to_parent
502
503
504	!------------------------------------------------------------------------------!
505	! Description:
506	! ------------
507	!> parent routine:
508	!> write particles into the MPI window
509	!------------------------------------------------------------------------------!
510	SUBROUTINE pmcp_p_fill_particle_win
511
512	IMPLICIT NONE
513
514	LOGICAL :: active_particle !< Particles located in the fine/child grid area are marked as active (to be transferred)
515	LOGICAL,SAVE :: lfirst = .TRUE. !<
516
517	INTEGER(iwp) :: child_id !< id of the child model
518	INTEGER(iwp) :: i !< x grid box index
519	INTEGER(iwp) :: ij !< combined xy index for the buffer array
520	INTEGER(iwp) :: ip !< loop index (child PEs)
521	INTEGER(iwp) :: j !< y grid box index
522	INTEGER(iwp) :: k !< z grid box index
523	INTEGER(iwp) :: m !< loop index (number of childs)
524	INTEGER(iwp) :: n !< loop index (number of particles)
525	INTEGER(iwp) :: nr_part_col !< Number of particles to transfer per column
526	INTEGER(iwp) :: number_of_particles !<
527	INTEGER(iwp) :: pindex !<
528	INTEGER(iwp) :: tot_particle_count !< Total number of particles per child
529
530	REAL(wp) :: dx_child !< child grid spacing
531	REAL(wp) :: dy_child !< child grid spacing
532	REAL(wp) :: dz_child !< child grid spacing
533	REAL(wp) :: ny_coord !< north coordinate of child grid
534	REAL(wp) :: ny_coord_b !< north coordinate of child grid boundary
535	REAL(wp) :: lx_coord !< left coordinate of child grid
536	REAL(wp) :: lx_coord_b !< left coordinate of child grid boundary
537	REAL(wp) :: rx_coord !< right coordinate of child grid
538	REAL(wp) :: rx_coord_b !< right coordinate of child grid boundary
539	REAL(wp) :: sy_coord !< south coordinate of child grid
540	REAL(wp) :: sy_coord_b !< south coordinate of child grid boundary
541	REAL(wp) :: uz_coord !< upper coordinate of child grid
542	REAL(wp) :: uz_coord_b !< upper coordinate of child grid boundary
543	REAL(wp) :: x !< particle position
544	REAL(wp) :: y !< particle position
545	REAL(wp) :: z !< particle position
546
547	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
548
549	#if defined( __parallel )
550	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
551
552	DO m = 1, get_number_of_children()
553
554	child_id = get_childid(m)
555
556	CALL get_child_edges( m, lx_coord, lx_coord_b, rx_coord, rx_coord_b, &
557	sy_coord, sy_coord_b, ny_coord, ny_coord_b, &
558	uz_coord, uz_coord_b)
559
560	CALL get_child_gridspacing( m, dx_child, dy_child, dz_child )
561
562	IF ( lfirst ) THEN
563	WRITE(9,'(a,5f10.2)') 'edges ',lx_coord,rx_coord,sy_coord,ny_coord,uz_coord
564	WRITE(9,'(a,5f10.2)') 'edges boundary ',lx_coord_b,rx_coord_b,sy_coord_b,ny_coord_b,uz_coord_b
565	WRITE(9,'(a,5f10.2)') 'child spacing ',dx_child, dy_child, dz_child,lower_left_coord_x,lower_left_coord_y
566	ENDIF
567	!
568	!-- reset values for every child
569	tot_particle_count = 0
570	nr_part = 0
571	part_adr = 0
572	pindex = 1
573
574	buf_shape(1) = max_nr_particle_in_rma_win
575	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
576
577	DO ip = 1, children(child_id)%inter_npes
578
579	ape => children(child_id)%pes(ip)
580
581	nr_part_col = 0
582
583	DO ij = 1, ape%nrele
584
585	!
586	!-- Inside the PMC adressing of 3d arrays starts with 1
587	i = ape%locind(ij)%i + nxl - nbgp - 1
588	j = ape%locind(ij)%j + nys - nbgp - 1
589	nr_part_col = 0 ! Number of particles to transfer per column
590	part_adr(j,i) = pindex
591
592	DO k = nzb + 1, nzt
593	number_of_particles = prt_count(k,j,i)
594
595	IF ( number_of_particles <= 0 ) CYCLE
596
597	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
598
599	! Select particles within boundary area
600
601	DO n = 1, number_of_particles
602	x = particles(n)%x
603	y = particles(n)%y
604	z = particles(n)%z
605	!
606	!-- check if the particle is located in the fine grid area
607	active_particle = ((x > lx_coord .AND. x < rx_coord) .AND. &
608	(y > sy_coord .AND. y < ny_coord) .AND. &
609	(z > 0.000000001 .AND. z < uz_coord))
610	IF ( active_particle .AND. particles(n)%particle_mask ) THEN
611
612	particle_in_win(pindex) = particles(n)
613	!
614	!-- Change particle positions and origin relative to global origin
615	particle_in_win(pindex)%x = particle_in_win(pindex)%x + lower_left_coord_x
616	particle_in_win(pindex)%y = particle_in_win(pindex)%y + lower_left_coord_y
617	particle_in_win(pindex)%origin_x = particle_in_win(pindex)%origin_x + lower_left_coord_x
618	particle_in_win(pindex)%origin_y = particle_in_win(pindex)%origin_y + lower_left_coord_y
619
620	tot_particle_count = tot_particle_count + 1
621	nr_part_col = nr_part_col + 1
622	pindex = pindex + 1
623	IF ( pindex > max_nr_particle_in_rma_win ) THEN
624	WRITE(9,*) 'RMA window too small on parent ',pindex, max_nr_particle_in_rma_win
625	message_string = 'RMA window too small on parent'
626	CALL message( 'pmci_create_child_arrays', 'PA0481', 3, 2, 0, 6, 0 ) ! PA number has to be adjusted
627	ENDIF
628	END IF
629	ENDDO
630	ENDDO
631	nr_part(j,i) = nr_part_col
632	ENDDO
633	ENDDO
634
635	CALL pmc_s_fillbuffer( child_id, particle_transfer = .TRUE. )
636	ENDDO
637
638	lfirst = .FALSE.
639
640	#endif
641	END SUBROUTINE pmcp_p_fill_particle_win
642
643
644	!------------------------------------------------------------------------------!
645	! Description:
646	! ------------
647	!> parent routine:
648	!> delete particles from the MPI window
649	!------------------------------------------------------------------------------!
650	SUBROUTINE pmcp_p_empty_particle_win
651
652	IMPLICIT NONE
653
654	INTEGER(iwp) :: child_id !< model id of the child
655	INTEGER(iwp) :: ip !< loop index (child PEs)
656	INTEGER(iwp) :: m !< loop index (number of childs)
657
658	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
659
660	#if defined( __parallel )
661	DO m = 1, get_number_of_children()
662
663	child_id = get_childid(m)
664
665	buf_shape(1) = max_nr_particle_in_rma_win
666	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
667
668	!
669	!-- In some cells of the coarse grid, there are contributions from more than
670	!-- one child process. Therefore p_copy_particle_to_org_grid is done for one
671	!-- child process per call
672	DO ip = 1, pmc_s_get_child_npes( child_id )
673
674	nr_part = 0
675	part_adr = 0
676
677	CALL pmc_s_getdata_from_buffer( child_id, particle_transfer = .TRUE.,&
678	child_process_nr = ip )
679	CALL p_copy_particle_to_org_grid( m )
680	ENDDO
681
682	ENDDO
683
684	#endif
685	END SUBROUTINE pmcp_p_empty_particle_win
686
687
688	!------------------------------------------------------------------------------!
689	! Description:
690	! ------------
691	!> parent routine:
692	!> After the transfer mark all parent particles that are still inside on of the
693	!> child areas for deletion.
694	!------------------------------------------------------------------------------!
695	SUBROUTINE pmcp_p_delete_particles_in_fine_grid_area
696
697	IMPLICIT NONE
698
699	LOGICAL :: to_delete !< particles outside of model domain are marked as to_delete
700
701	INTEGER(iwp) :: i !< loop index (x grid)
702	INTEGER(iwp) :: j !< loop index (y grid)
703	INTEGER(iwp) :: k !< loop index (z grid)
704	INTEGER(iwp) :: m !< loop index (number of particles)
705	INTEGER(iwp) :: n !< loop index (number of childs)
706
707	REAL(wp) :: dx_child !< child grid spacing
708	REAL(wp) :: dy_child !< child grid spacing
709	REAL(wp) :: dz_child !< child grid spacing
710	REAL(wp) :: ny_coord !< north coordinate of child grid
711	REAL(wp) :: ny_coord_b !< north coordinate of child grid boundary
712	REAL(wp) :: lx_coord !< left coordinate of child grid
713	REAL(wp) :: lx_coord_b !< left coordinate of child grid boundary
714	REAL(wp) :: rx_coord !< right coordinate of child grid
715	REAL(wp) :: rx_coord_b !< right coordinate of child grid boundary
716	REAL(wp) :: sy_coord !< south coordinate of child grid
717	REAL(wp) :: sy_coord_b !< south coordinate of child grid boundary
718	REAL(wp) :: uz_coord !< upper coordinate of child grid
719	REAL(wp) :: uz_coord_b !< upper coordinate of child grid boundary
720	REAL(wp) :: x !< particle position
721	REAL(wp) :: y !< particle position
722	REAL(wp) :: z !< particle position
723
724	#if defined( __parallel )
725	DO m = 1, get_number_of_children()
726	CALL get_child_edges( m, lx_coord, lx_coord_b, rx_coord, rx_coord_b, &
727	sy_coord, sy_coord_b, ny_coord, ny_coord_b, &
728	uz_coord, uz_coord_b )
729
730
731	CALL get_child_gridspacing( m, dx_child, dy_child, dz_child )
732
733	DO i = nxl, nxr
734	DO j = nys, nyn
735	DO k = nzb, nzt
736	number_of_particles = prt_count(k,j,i)
737
738	IF ( number_of_particles == 0 ) CYCLE
739
740	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
741
742	DO n = 1, number_of_particles
743	x = particles(n)%x
744	y = particles(n)%y
745	z = particles(n)%z
746
747	to_delete = ((x > lx_coord .AND. x < rx_coord) .AND. &
748	(y > sy_coord .AND. y < ny_coord) .AND. &
749	(z > 0.000000001 .AND. z < uz_coord))
750
751	IF ( to_delete ) THEN
752	particles(n)%particle_mask = .FALSE.
753	ENDIF
754	ENDDO
755	ENDDO
756	ENDDO
757	ENDDO
758
759	ENDDO
760
761	#endif
762	END SUBROUTINE pmcp_p_delete_particles_in_fine_grid_area
763
764
765	!------------------------------------------------------------------------------!
766	! Description:
767	! ------------
768	!> general routine:
769	!> print the total number of of the current model and its child models into a file
770	!------------------------------------------------------------------------------!
771	SUBROUTINE pmcp_g_print_number_of_particles (my_time,local_nr_particles)
772
773	USE pegrid, &
774	ONLY: myid
775
776	IMPLICIT NONE
777
778	INTEGER(iwp),INTENT(IN) :: local_nr_particles !<
779
780	REAL(wp),INTENT(IN) :: my_time !<
781
782	LOGICAL, SAVE :: is_file_open=.FALSE. !<
783
784	INTEGER(iwp) :: child_id !<
785	INTEGER(iwp) :: child_nr_particles !< total number of particles in all child models
786	INTEGER(iwp) :: ierr !< error code
787	INTEGER(iwp) :: m !< loop index (number of childs)
788
789	CHARACTER(LEN=16) :: fname !< filename
790
791	INTEGER(iwp),DIMENSION(2) :: ivalr !< integer value to be received
792	INTEGER(iwp),DIMENSION(2) :: ivals !< integer value to be send
793
794	#if defined( __parallel )
795	child_nr_particles = 0
796	IF ( myid == 0 ) THEN
797	IF ( cpl_id > 1 ) THEN
798	ivals(1) = local_nr_particles
799	CALL pmc_send_to_parent( ivals, 1, 0, 400, ierr )
800	ENDIF
801	DO m = 1, SIZE( pmc_parent_for_child ) - 1
802
803	child_id = pmc_parent_for_child(m)
804	CALL pmc_recv_from_child( child_id, ivalr, 1, 0, 400, ierr )
805	child_nr_particles = child_nr_particles + ivalr(1)
806	ENDDO
807
808	IF ( SIZE( pmc_parent_for_child ) > 1 ) THEN
809	IF ( .NOT. is_file_open ) THEN !kk muss noch auf file_open umgestellt werden
810	WRITE(fname,'(a,i2.2)') 'nr_particles_',cpl_id
811	OPEN (333,file = fname)
812	is_file_open = .true.
813	ENDIF
814	WRITE(333,'(f12.2,3i10)') my_time,local_nr_particles + child_nr_particles,local_nr_particles,child_nr_particles
815	ENDIF
816	ENDIF
817
818	#endif
819	END SUBROUTINE pmcp_g_print_number_of_particles
820
821
822	!------------------------------------------------------------------------------!
823	!------------------------------------------------------------------------------!
824	! Private subroutines
825	!------------------------------------------------------------------------------!
826	!------------------------------------------------------------------------------!
827
828	!------------------------------------------------------------------------------!
829	! Description:
830	! ------------
831	!> child routine
832	!> update the size of the local buffer (coarse_particles)
833	!------------------------------------------------------------------------------!
834	SUBROUTINE check_and_alloc_coarse_particle (ic,jc,nr,with_copy)
835
836	IMPLICIT NONE
837
838	INTEGER(iwp),INTENT(IN) :: ic !< coarse x grid index
839	INTEGER(iwp),INTENT(IN) :: jc !< coarse y grid index
840	INTEGER(iwp),INTENT(IN) :: nr !< number of particles to be transferred/stored in local buffer
841
842	LOGICAL,INTENT(IN),OPTIONAL :: with_copy !< copy particles in buffer? or reallocate empty buffer
843
844	LOGICAL :: with_copy_lo !< local variable of with copy
845
846	INTEGER(iwp) :: new_size !< new size of the local buffer
847	INTEGER(iwp) :: old_size !< old size of the local buffer
848
849	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: tmp_particles_d !<
850
851	#if defined( __parallel )
852	with_copy_lo = .FALSE.
853	IF ( PRESENT( with_copy ) ) with_copy_lo = with_copy
854
855	IF ( .NOT. ALLOCATED( coarse_particles(jc,ic)%parent_particles ) ) THEN
856	new_size = MAX( nr, Min_particles_per_column )
857	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
858	ELSEIF ( nr > SIZE( coarse_particles(jc,ic)%parent_particles ) ) THEN
859
860	old_size = SIZE( coarse_particles(jc,ic)%parent_particles )
861	new_size = old_size * ( 1.0_wp + alloc_factor / 100.0_wp )
862	new_size = MAX( nr, new_size, old_size + Min_particles_per_column )
863
864	!
865	!-- Copy existing particles to new particle buffer
866	IF ( with_copy_lo ) THEN
867	ALLOCATE( tmp_particles_d(old_size) )
868	tmp_particles_d(1:old_size) = coarse_particles(jc,ic)%parent_particles
869
870	DEALLOCATE( coarse_particles(jc,ic)%parent_particles )
871	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
872
873	coarse_particles(jc,ic)%parent_particles(1:old_size) = tmp_particles_d(1:old_size)
874	coarse_particles(jc,ic)%parent_particles(old_size+1:new_size) = zero_particle
875
876	DEALLOCATE( tmp_particles_d )
877	!
878	!-- allocate or reallocate an empty buffer
879	ELSE
880	DEALLOCATE( coarse_particles(jc,ic)%parent_particles )
881	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
882	ENDIF
883	ENDIF
884
885	#endif
886	END SUBROUTINE check_and_alloc_coarse_particle
887
888
889	!------------------------------------------------------------------------------!
890	! Description:
891	! ------------
892	!> child routine:
893	!> copy/sort particles out of the local buffer into the respective grid boxes
894	!------------------------------------------------------------------------------!
895	SUBROUTINE c_copy_particle_to_child_grid
896
897	IMPLICIT NONE
898
899	INTEGER(iwp) :: ic !< coarse x grid index
900	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
901	INTEGER(iwp) :: ipr !< right boundary in coarse(parent) index space
902	INTEGER(iwp) :: ip !< x grid index
903	INTEGER(iwp) :: jc !< coarse y grid index
904	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
905	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
906	INTEGER(iwp) :: jp !< y grid index
907	INTEGER(iwp) :: kp !< z grid index
908	INTEGER(iwp) :: n !< loop index (number of particles)
909	INTEGER(iwp) :: nr !< short variable for name number or particles
910
911	REAL(wp) :: xc !< child x coordinate
912	REAL(wp) :: xoc !< child x origin
913	REAL(wp) :: yc !< child y coordinate
914	REAL(wp) :: yoc !< child y origin
915	REAL(wp) :: zc !< child z coordinate
916
917	#if defined( __parallel )
918	!
919	!-- Child domain boundaries in the parent index space
920	ipl = parent_bound(1)
921	ipr = parent_bound(2)
922	jps = parent_bound(3)
923	jpn = parent_bound(4)
924
925	DO ic = ipl, ipr
926	DO jc = jps, jpn
927	nr = coarse_particles(jc,ic)%nr_particle
928
929	IF ( nr > 0 ) THEN
930	DO n = 1, nr
931	xc = coarse_particles(jc,ic)%parent_particles(n)%x-lower_left_coord_x
932	yc = coarse_particles(jc,ic)%parent_particles(n)%y-lower_left_coord_y
933	zc = coarse_particles(jc,ic)%parent_particles(n)%z
934	xoc = coarse_particles(jc,ic)%parent_particles(n)%origin_x-lower_left_coord_x
935	yoc = coarse_particles(jc,ic)%parent_particles(n)%origin_y-lower_left_coord_y
936	ip = xc / dx
937	jp = yc / dy
938	kp = nzt
939	DO WHILE ( zw(kp-1) > zc .AND. kp > nzb + 1 ) ! kk search loop has to be optimzed !!!
940	kp = kp - 1
941	ENDDO
942
943	IF ( ip >= nxl .AND. ip <= nxr .AND. jp >= nys .AND. jp <= nyn ) THEN
944	prt_count(kp,jp,ip) = prt_count(kp,jp,ip) + 1
945	IF ( prt_count(kp,jp,ip) > SIZE( grid_particles(kp,jp,ip)%particles ) ) THEN
946	CALL pmc_realloc_particles_array( ip, jp, kp )
947	ENDIF
948	coarse_particles(jc,ic)%parent_particles(n)%x = xc ! Adjust coordinates to child grid
949	coarse_particles(jc,ic)%parent_particles(n)%y = yc
950	coarse_particles(jc,ic)%parent_particles(n)%origin_x = xoc ! Adjust origins to child grid
951	coarse_particles(jc,ic)%parent_particles(n)%origin_y = yoc
952	grid_particles(kp,jp,ip)%particles(prt_count(kp,jp,ip)) = coarse_particles(jc,ic)%parent_particles(n)
953	ENDIF
954	ENDDO
955	ENDIF
956	ENDDO
957	ENDDO
958
959	#endif
960	END SUBROUTINE c_copy_particle_to_child_grid
961
962
963	!------------------------------------------------------------------------------!
964	! Description:
965	! ------------
966	!> child routine:
967	!> copy particles which left the model area into the local buffer
968	!------------------------------------------------------------------------------!
969	SUBROUTINE c_copy_particle_to_coarse_grid
970
971	IMPLICIT NONE
972
973	LOGICAL :: boundary_particle !<
974
975	INTEGER(iwp) :: i !< loop index (x grid)
976	INTEGER(iwp) :: ic !< loop index (coarse x grid)
977	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
978	INTEGER(iwp) :: ipr !< left boundary in coarse(parent) index space
979	INTEGER(iwp) :: ierr !< error code
980	INTEGER(iwp) :: j !< loop index (y grid)
981	INTEGER(iwp) :: jc !< loop index (coarse y grid)
982	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
983	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
984	INTEGER(iwp) :: k !< loop index (z grid)
985	INTEGER(iwp) :: n !< loop index (number of particles)
986
987	REAL(wp) :: x !< x coordinate
988	REAL(wp) :: xo !< x origin
989	REAL(wp) :: x_left !< absolute left boundary
990	REAL(wp) :: x_right !< absolute right boundary
991	REAL(wp) :: y !< left boundary in coarse(parent) index space
992	REAL(wp) :: yo !< y origin
993	REAL(wp) :: y_north !< absolute north boundary
994	REAL(wp) :: y_south !< absoulte south boundary
995	REAL(wp) :: z !< z coordinate
996
997	#if defined( __parallel )
998	!
999	!-- Child domain boundaries in the parent index space
1000
1001	ipl = parent_bound(1)
1002	ipr = parent_bound(2)
1003	jps = parent_bound(3)
1004	jpn = parent_bound(4)
1005
1006	!
1007	!-- absolute coordinates
1008	x_left = coord_x(0)
1009	x_right = coord_x(nx) + dx
1010	y_south = coord_y(0)
1011	y_north = coord_y(ny) + dy
1012
1013	! Clear Particle Buffer
1014
1015	DO ic = ipl, ipr
1016	DO jc = jps, jpn
1017	coarse_particles(jc,ic)%nr_particle = 0
1018	ENDDO
1019	ENDDO
1020
1021	!
1022	!-- Determine particles which leave the inner area in east or west dirextion
1023	!-- Compute only first (nxl) and last (nxr) loop iterration.
1024	DO i = nxl, nxr
1025	DO j = nys, nyn
1026	DO k = nzb + 1, nzt
1027	number_of_particles = prt_count(k,j,i)
1028	IF ( number_of_particles <= 0 ) CYCLE
1029	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
1030	DO n = 1, number_of_particles
1031	IF ( particles(n)%particle_mask ) THEN
1032	x = particles(n)%x+ lower_left_coord_x
1033	y = particles(n)%y+ lower_left_coord_y
1034	xo = particles(n)%origin_x + lower_left_coord_x
1035	yo = particles(n)%origin_y + lower_left_coord_y
1036	z = particles(n)%z
1037
1038	boundary_particle = .FALSE.
1039	boundary_particle = boundary_particle .OR. (x < x_left .OR. x > x_right)
1040	boundary_particle = boundary_particle .OR. (y < y_south .OR. y > y_north)
1041	boundary_particle = boundary_particle .OR. (z > zw(nzt))
1042
1043	IF ( boundary_particle ) THEN
1044	ic = x / pg%dx !TODO anpassen auf Mehrfachnesting
1045	jc = y / pg%dy
1046
1047	IF ( ic >= ipl .AND. ic <= ipr .AND. jc >= jps .AND. jc <= jpn ) THEN
1048	coarse_particles(jc,ic)%nr_particle = coarse_particles(jc,ic)%nr_particle + 1
1049	CALL check_and_alloc_coarse_particle( ic, jc, coarse_particles(jc,ic)%nr_particle, with_copy=.TRUE. )
1050
1051	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle) = particles(n)
1052	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle)%x = x !adapt to global coordinates
1053	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle)%y = y
1054	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle)%origin_x = xo
1055	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle)%origin_y = yo
1056	!-- Mark particle as deleted after copying it to the transfer buffer
1057	grid_particles(k,j,i)%particles(n)%particle_mask = .FALSE.
1058	ELSE
1059	WRITE(9,'(a,10i6)') 'This should not happen ',i,j,k,ic,jc,ipl,ipr,jps,jpn
1060	CALL MPI_Abort( MPI_COMM_WORLD, 9999, ierr )
1061	ENDIF
1062	ENDIF
1063	ENDIF
1064	ENDDO
1065	ENDDO
1066	ENDDO
1067	ENDDO
1068
1069	!
1070	!- Pack particles (eliminate those marked for deletion),
1071	!- determine new number of particles
1072	! CALL lpm_sort_in_subboxes
1073
1074	#endif
1075	END SUBROUTINE c_copy_particle_to_coarse_grid
1076
1077
1078	!------------------------------------------------------------------------------!
1079	! Description:
1080	! ------------
1081	!> parent routine:
1082	!> copy/sort particles from the MPI window into the respective grid boxes
1083	!------------------------------------------------------------------------------!
1084	SUBROUTINE p_copy_particle_to_org_grid( m )
1085
1086	IMPLICIT NONE
1087
1088	INTEGER(iwp),INTENT(IN) :: m !<
1089
1090	INTEGER(iwp) :: i !< loop index (x grid)
1091	INTEGER(iwp) :: j !< loop index (y grid)
1092	INTEGER(iwp) :: k !< loop index (z grid)
1093	INTEGER(iwp) :: n !< loop index (nr part)
1094	INTEGER(iwp) :: nr !< short variable name for nr_part
1095	INTEGER(iwp) :: pindex !< short variable name part_adr
1096
1097	REAL(wp) :: x !< x coordinate
1098	REAL(wp) :: xo !< x origin
1099	REAL(wp) :: y !< y coordinate
1100	REAL(wp) :: yo !< y origin
1101	REAL(wp) :: z !< z coordinate
1102
1103	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
1104
1105	#if defined( __parallel )
1106	buf_shape(1) = max_nr_particle_in_rma_win
1107	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
1108
1109	DO i = nxl, nxr
1110	DO j = nys, nyn
1111	nr = nr_part(j,i)
1112	IF ( nr > 0 ) THEN
1113	pindex = part_adr(j,i)
1114	DO n = 1, nr
1115	x = particle_in_win(pindex)%x-lower_left_coord_x
1116	y = particle_in_win(pindex)%y-lower_left_coord_y
1117	z = particle_in_win(pindex)%z
1118	xo = particle_in_win(pindex)%origin_x-lower_left_coord_x
1119	yo = particle_in_win(pindex)%origin_y-lower_left_coord_y
1120	k = nzt + 1
1121	DO WHILE ( zw(k-1) > z .AND. k > nzb + 1 ) ! kk search loop has to be optimzed !!!
1122	k = k - 1
1123	END DO
1124
1125	prt_count(k,j,i) = prt_count(k,j,i) + 1
1126	IF ( prt_count(k,j,i) > SIZE( grid_particles(k,j,i)%particles ) ) THEN
1127	CALL pmc_realloc_particles_array( i, j, k )
1128	ENDIF
1129	grid_particles(k,j,i)%particles(prt_count(k,j,i)) = particle_in_win(pindex)
1130
1131	!
1132	!-- Update particle positions and origins relative to parent domain
1133	grid_particles(k,j,i)%particles(prt_count(k,j,i))%x = x
1134	grid_particles(k,j,i)%particles(prt_count(k,j,i))%y = y
1135	grid_particles(k,j,i)%particles(prt_count(k,j,i))%origin_x = xo
1136	grid_particles(k,j,i)%particles(prt_count(k,j,i))%origin_y = yo
1137	pindex = pindex + 1
1138	ENDDO
1139	ENDIF
1140	ENDDO
1141	ENDDO
1142
1143	#endif
1144	END SUBROUTINE p_copy_particle_to_org_grid
1145
1146	!------------------------------------------------------------------------------!
1147	! Description:
1148	! ------------
1149	!> If the allocated memory for the particle array do not suffice to add arriving
1150	!> particles from neighbour grid cells, this subrouting reallocates the
1151	!> particle array to assure enough memory is available.
1152	!------------------------------------------------------------------------------!
1153	SUBROUTINE pmc_realloc_particles_array ( i, j, k, size_in )
1154
1155	INTEGER(iwp), INTENT(IN) :: i !<
1156	INTEGER(iwp), INTENT(IN) :: j !<
1157	INTEGER(iwp), INTENT(IN) :: k !<
1158	INTEGER(iwp), INTENT(IN), OPTIONAL :: size_in !<
1159
1160	INTEGER(iwp) :: old_size !<
1161	INTEGER(iwp) :: new_size !<
1162	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: tmp_particles_d !<
1163	TYPE(particle_type), DIMENSION(500) :: tmp_particles_s !<
1164
1165	old_size = SIZE(grid_particles(k,j,i)%particles)
1166
1167	IF ( PRESENT(size_in) ) THEN
1168	new_size = size_in
1169	ELSE
1170	new_size = old_size * ( 1.0_wp + alloc_factor / 100.0_wp )
1171	ENDIF
1172
1173	new_size = MAX( new_size, 1, old_size + 1 )
1174
1175	IF ( old_size <= 500 ) THEN
1176
1177	tmp_particles_s(1:old_size) = grid_particles(k,j,i)%particles(1:old_size)
1178
1179	DEALLOCATE(grid_particles(k,j,i)%particles)
1180	ALLOCATE(grid_particles(k,j,i)%particles(new_size))
1181
1182	grid_particles(k,j,i)%particles(1:old_size) = tmp_particles_s(1:old_size)
1183	grid_particles(k,j,i)%particles(old_size+1:new_size) = zero_particle
1184
1185	ELSE
1186
1187	ALLOCATE(tmp_particles_d(new_size))
1188	tmp_particles_d(1:old_size) = grid_particles(k,j,i)%particles
1189
1190	DEALLOCATE(grid_particles(k,j,i)%particles)
1191	ALLOCATE(grid_particles(k,j,i)%particles(new_size))
1192
1193	grid_particles(k,j,i)%particles(1:old_size) = tmp_particles_d(1:old_size)
1194	grid_particles(k,j,i)%particles(old_size+1:new_size) = zero_particle
1195
1196	DEALLOCATE(tmp_particles_d)
1197
1198	ENDIF
1199	particles => grid_particles(k,j,i)%particles(1:new_size)
1200
1201	RETURN
1202
1203	END SUBROUTINE pmc_realloc_particles_array
1204
1205	#endif
1206	END MODULE pmc_particle_interface

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