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source: palm/trunk/SOURCE/pmc_particle_interface.f90 @ 2836

Last change on this file since 2836 was 2809, checked in by schwenkel, 7 years ago
Bugfix for gfortran: Replace the function C_SIZEOF with STORAGE_SIZE
Property svn:keywords set to `Id`
File size: 42.8 KB

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[2801]	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 1997-2018 Leibniz Universitaet Hannover
	19	!------------------------------------------------------------------------------!
	20	!
	21	! Current revisions:
	22	! ------------------
	23	!
	24	!
	25	! Former revisions:
[2809]	26	! -----------------!
	27	! $Id: pmc_particle_interface.f90 2809 2018-02-15 09:55:58Z Giersch $
	28	! Bugfix for gfortran: Replace the function C_SIZEOF with STORAGE_SIZE.
	29	!
[2801]	30	!
	31	! Initial Version (by Klaus Ketelsen)
	32	!
	33	!
	34	! Description:
	35	! ------------
	36	! Introduce particle transfer in nested models.
	37	! Interface to palm lpm model to handel particle transfer between parent and
	38	! child model.
	39	!------------------------------------------------------------------------------!
	40
	41	USE, INTRINSIC :: ISO_C_BINDING
	42	USE MPI
	43
	44	USE kinds
	45
	46	USE pegrid, &
	47	ONLY: myidx,myidy
	48
	49	USE indices, &
	50	ONLY: nx, ny, nxl, nxr, nys, nyn, nzb, nzt, nxlg, nxrg, nysg, nyng, nbgp
	51
	52	USE grid_variables, &
	53	ONLY: dx, dy
	54
	55	USE arrays_3d, &
	56	ONLY: zw
	57
	58	USE control_parameters, &
	59	ONLY: message_string
	60
	61	USE particle_attributes, &
	62	ONLY: prt_count, particles, grid_particles, &
	63	particle_type, number_of_particles, zero_particle, &
	64	ibc_par_t, ibc_par_lr, ibc_par_ns, alloc_factor
	65
	66	USE lpm_pack_and_sort_mod
	67
	68	USE pmc_general, &
	69	ONLY: pedef
	70
	71	USE pmc_parent, &
	72	ONLY: children, pmc_s_fillbuffer, pmc_s_getdata_from_buffer, &
	73	pmc_s_get_child_npes
	74
	75	USE pmc_child, &
	76	ONLY: me, pmc_c_getbuffer, pmc_c_putbuffer
	77
	78	USE pmc_interface, &
	79	ONLY: cpl_id, get_number_of_childs, nr_part, part_adr, nested_run, &
	80	get_childid, get_child_edges, nr_partc, part_adrc, &
	81	coarse_bound, coord_x, coord_y, cg, get_child_gridspacing, &
	82	lower_left_coord_x, lower_left_coord_y
	83
	84	USE pmc_handle_communicator, &
	85	ONLY: pmc_parent_for_child
	86
	87	USE pmc_mpi_wrapper, &
	88	ONLY: pmc_send_to_parent, pmc_recv_from_child
	89
	90	USE lpm_exchange_horiz_mod, &
	91	ONLY: realloc_particles_array
	92
	93	IMPLICIT NONE
	94	PRIVATE
	95	SAVE
	96
	97	TYPE coarse_particle_def
	98	INTEGER(iwp) :: nr_particle
	99
	100	TYPE(particle_type),ALLOCATABLE,DIMENSION(:) :: parent_particles
	101	END TYPE coarse_particle_def
	102
	103	INTEGER(iwp),PARAMETER :: Min_particles_per_column = 100 !<
	104	INTEGER(iwp),PARAMETER :: max_nr_particle_in_rma_win = 100000 !<
	105
	106	INTEGER(iwp) :: nr_fine_in_coarse !< Number of fine grid cells in coarse grid (one direction)
	107	INTEGER(iwp) :: particle_win_child !<
	108
	109	INTEGER(iwp),ALLOCATABLE,DIMENSION(:) :: particle_win_parent !<
	110
	111	TYPE(C_PTR), ALLOCATABLE,DIMENSION(:) :: buf_ptr !<
	112
	113	TYPE(particle_type), DIMENSION(:),POINTER :: particle_in_win !<
	114
	115	TYPE(coarse_particle_def),ALLOCATABLE,DIMENSION(:,:) :: coarse_particles !<
	116
	117
	118
	119	INTERFACE pmcp_g_init
	120	MODULE PROCEDURE pmcp_g_init
	121	END INTERFACE pmcp_g_init
	122
	123	INTERFACE pmcp_g_alloc_win
	124	MODULE PROCEDURE pmcp_g_alloc_win
	125	END INTERFACE pmcp_g_alloc_win
	126
	127	INTERFACE pmcp_c_get_particle_from_parent
	128	MODULE PROCEDURE pmcp_c_get_particle_from_parent
	129	END INTERFACE pmcp_c_get_particle_from_parent
	130
	131	INTERFACE pmcp_c_send_particle_to_parent
	132	MODULE PROCEDURE pmcp_c_send_particle_to_parent
	133	END INTERFACE pmcp_c_send_particle_to_parent
	134
	135	INTERFACE pmcp_p_fill_particle_win
	136	MODULE PROCEDURE pmcp_p_fill_particle_win
	137	END INTERFACE pmcp_p_fill_particle_win
	138
	139	INTERFACE pmcp_p_empty_particle_win
	140	MODULE PROCEDURE pmcp_p_empty_particle_win
	141	END INTERFACE pmcp_p_empty_particle_win
	142
	143	INTERFACE pmcp_g_print_number_of_particles
	144	MODULE PROCEDURE pmcp_g_print_number_of_particles
	145	END INTERFACE pmcp_g_print_number_of_particles
	146
	147	INTERFACE pmcp_p_delete_particles_in_fine_grid_area
	148	MODULE PROCEDURE pmcp_p_delete_particles_in_fine_grid_area
	149	END INTERFACE pmcp_p_delete_particles_in_fine_grid_area
	150
	151	PUBLIC pmcp_g_init, pmcp_g_alloc_win, pmcp_c_get_particle_from_parent
	152	PUBLIC pmcp_c_send_particle_to_parent, pmcp_p_fill_particle_win, pmcp_g_print_number_of_particles
	153	PUBLIC pmcp_p_empty_particle_win, pmcp_p_delete_particles_in_fine_grid_area
	154
	155	CONTAINS
	156
	157	!------------------------------------------------------------------------------!
	158	! Description:
	159	! ------------
	160	!> general routine:
	161	!> Initializing actions of the particle interface
	162	!> check particle boundary conditions for the child models
	163	!------------------------------------------------------------------------------!
	164	SUBROUTINE pmcp_g_init
	165
	166	IMPLICIT NONE
	167
	168	INTEGER(iwp) :: nr_childs !< Number of child models of the current model
	169
	170	nr_childs = get_number_of_childs()
	171	!
	172	!-- Check if the current model has child models
	173	IF ( nr_childs > 0 ) THEN
	174	ALLOCATE( nr_part(nysg:nyng, nxlg:nxrg) )
	175	ALLOCATE( part_adr(nysg:nyng, nxlg:nxrg) )
	176	nr_part = 0
	177	part_adr = 0
	178	ENDIF
	179
	180	!
	181	!-- Set the boundary conditions to nested for all non root (i.e child) models
	182	IF ( cpl_id > 1 ) THEN
	183
	184	IF ( ibc_par_t /= 3 ) THEN
	185	ibc_par_t = 3
	186	message_string = 'In Child model: bc_par_t is automatically set to nested '
	187	CALL message( 'pmcp_g_init ', 'PA0477', 0, 1, 0, 6, 0 ) ! PA number has to be adjusted
	188	ENDIF
	189
	190	IF ( ibc_par_lr /= 3 ) THEN
	191	ibc_par_lr = 3
	192	message_string = 'In Child model: bc_par_lr is automatically set to nested '
	193	CALL message( 'pmcp_g_init ', 'PA0478', 0, 1, 0, 6, 0 ) ! PA number has to be adjusted
	194	ENDIF
	195
	196	IF ( ibc_par_ns /= 3 ) THEN
	197	ibc_par_ns = 3
	198	message_string = 'In Child model: bc_par_ns is automatically set to nested '
	199	CALL message( 'pmcp_g_init ', 'PA0479', 0, 1, 0, 6, 0 ) ! PA number has to be adjusted
	200	ENDIF
	201
	202	ENDIF
	203
	204	END SUBROUTINE pmcp_g_init
	205	!------------------------------------------------------------------------------!
	206	! Description:
	207	! ------------
	208	!> general routine:
	209	!> allocate the MPI windows
	210	!------------------------------------------------------------------------------!
	211	SUBROUTINE pmcp_g_alloc_win
	212
	213	IMPLICIT NONE
	214
	215	INTEGER(iwp) :: m !< loop index
	216	INTEGER(iwp) :: ierr !< error code
	217	INTEGER(iwp) :: icl !< left boundary in coarse(parent) index space
	218	INTEGER(iwp) :: icr !< right boundary in coarse(parent) index space
	219	INTEGER(iwp) :: jcs !< south boundary in coarse(parent) index space
	220	INTEGER(iwp) :: jcn !< north boundary in coarse(parent) index space
	221	INTEGER(iwp) :: child_id !< Id of a child model
	222	INTEGER(iwp) :: nr_childs !< Number of child models of the current model
	223
[2807]	224	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize !<
[2801]	225	INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !<
	226	TYPE(C_PTR), SAVE :: ptr !<
	227
	228	TYPE(particle_type),DIMENSION(:),POINTER :: win_buffer !<
	229
	230	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	231
	232	!
	233	!-- If the model has a parent model prepare the structures for transfer
	234	IF ( cpl_id > 1 ) THEN
[2809]	235
	236	parsize = STORAGE_SIZE(zero_particle)/8
	237
[2807]	238	CALL MPI_ALLOC_MEM( parsize , MPI_INFO_NULL, ptr, ierr )
[2801]	239	buf_shape(1) = 1
	240	CALL C_F_POINTER( ptr, win_buffer, buf_shape )
[2807]	241	CALL MPI_WIN_CREATE( win_buffer, parsize, parsize, &
[2801]	242	MPI_INFO_NULL, me%intra_comm, particle_win_child, &
	243	ierr )
	244
	245	!
	246	!-- Child domain boundaries in the parent index space
	247	icl = coarse_bound(1)
	248	icr = coarse_bound(2)
	249	jcs = coarse_bound(3)
	250	jcn = coarse_bound(4)
	251
	252	! ALLOCATE( coarse_particles(jcs:jcn, icl:icr) )
	253
	254	coarse_particles(:,:)%nr_particle = 0
	255	ENDIF
	256
	257	!
	258	!-- If the model has child models prepare the structures for transfer
	259	nr_childs = get_number_of_childs()
	260	IF ( nr_childs > 0 ) THEN
	261	ALLOCATE( particle_win_parent(nr_childs) )
	262	ALLOCATE( buf_ptr(nr_childs) )
	263	DO m = 1, nr_childs
	264	child_id = get_childid(m)
[2809]	265	parsize = STORAGE_SIZE(zero_particle)/8
	266
[2807]	267	winsize = max_nr_particle_in_rma_win * parsize
[2801]	268	CALL MPI_ALLOC_MEM( winsize , MPI_INFO_NULL, buf_ptr(m), ierr )
	269	buf_shape(1) = max_nr_particle_in_rma_win
	270	CALL C_F_POINTER( buf_ptr(m), win_buffer, buf_shape )
[2807]	271	CALL MPI_WIN_CREATE( win_buffer, winsize, parsize, &
[2801]	272	MPI_INFO_NULL, children(child_id)%intra_comm, &
	273	particle_win_parent(m), ierr )
	274	ENDDO
	275	ENDIF
	276
	277	END SUBROUTINE pmcp_g_alloc_win
	278	!------------------------------------------------------------------------------!
	279	! Description:
	280	! ------------
	281	!> child routine:
	282	!> Read/get particles out of the parent MPI window
	283	!------------------------------------------------------------------------------!
	284	SUBROUTINE pmcp_c_get_particle_from_parent
	285
	286	IMPLICIT NONE
	287
	288	INTEGER(iwp) :: i !< x grid index
	289	INTEGER(iwp) :: icl !< left boundary in coarse(parent) index space
	290	INTEGER(iwp) :: ierr !< error code
	291	INTEGER(iwp) :: ij !< combined xy index for the buffer array
	292	INTEGER(iwp) :: ip !< loop index (child PEs)
	293	INTEGER(iwp) :: j !< y grid index
	294	INTEGER(iwp) :: jcs !< south boundary in coarse(parent) index space
	295	INTEGER(iwp) :: nr !< number of particles to receive from a parent box
	296
[2808]	297	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize !<
[2801]	298	INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp !<
	299
	300	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
	301
	302	IF ( cpl_id > 1 ) THEN
	303
	304	CALL pmc_c_getbuffer( particle_transfer = .TRUE. ) !Get number of particle/column and offset in RMA window xx
	305
	306	!
	307	!-- Wait for buffer to fill.
	308	!
	309	!-- The parent side (in pmc_s_fillbuffer) is filling the buffer in the MPI RMA window
	310	!-- When the filling is complete, a MPI_BARRIER is called.
	311	!-- The child is not allowd to access the parent-buffer before it is completely filled
	312	!-- Synchronization is done implicitely in pmc_c_getbuffer and pmc_s_fillbuffer on the parent side
	313
	314	icl = coarse_bound(1)
	315	jcs = coarse_bound(3)
	316
	317	DO ip = 1, me%inter_npes
	318
	319	ape => me%pes(ip)
	320
	321	DO ij = 1, ape%nrele
	322	j = ape%locind(ij)%j + jcs - 1
	323	i = ape%locind(ij)%i + icl - 1
	324	nr = nr_partc(j,i)
	325	IF ( nr > 0 ) THEN
	326
	327	CALL check_and_alloc_coarse_particle (i, j, nr)
[2809]	328	parsize = STORAGE_SIZE(zero_particle)/8
[2801]	329	target_disp = part_adrc(j,i) - 1
	330	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip - 1, 0, particle_win_child, ierr )
	331	CALL MPI_GET( coarse_particles(j,i)%parent_particles, &
[2808]	332	nr * parsize, MPI_BYTE, ip - 1, &
	333	target_disp, nr * parsize, &
[2801]	334	MPI_BYTE, particle_win_child, ierr )
	335	CALL MPI_WIN_UNLOCK( ip - 1, particle_win_child, ierr )
	336	ENDIF
	337	coarse_particles(j,i)%nr_particle = nr
	338	ENDDO
	339	ENDDO
	340
	341	CALL c_copy_particle_to_child_grid
	342	ENDIF
	343
	344	END SUBROUTINE pmcp_c_get_particle_from_parent
	345	!------------------------------------------------------------------------------!
	346	! Description:
	347	! ------------
	348	!> child routine:
	349	!> Write/put particles into the parent MPI window
	350	!------------------------------------------------------------------------------!
	351	SUBROUTINE pmcp_c_send_particle_to_parent
	352
	353	IMPLICIT NONE
	354
	355	INTEGER(iwp) :: disp_offset !<
	356	INTEGER(iwp) :: i !< x loop index
	357	INTEGER(iwp) :: icl !< left boundary in coarse(parent) index space
	358	INTEGER(iwp) :: icr !< right boundary in coarse(parent) index space
	359	INTEGER(iwp) :: ierr !< error code
	360	INTEGER(iwp) :: ij !< combined xy index for the buffer array
	361	INTEGER(iwp) :: ip !< loop index (child PEs)
	362	INTEGER(iwp) :: j !< y loop index
	363	INTEGER(iwp) :: jcs !< south boundary in coarse(parent) index space
	364	INTEGER(iwp) :: jcn !< north boundary in coarse(parent) index space
	365	INTEGER(iwp) :: max_nr_particle_per_pe !< maximum number of particles per PE (depending on grid apect ratio)
	366	INTEGER(iwp) :: n !< shorter variable name for nr_fine_in_coarse
	367	INTEGER(iwp) :: nr !< shorter variabel name for nr_partc
	368	INTEGER(iwp) :: pe_offset !< offset index of the current PE
	369
[2808]	370	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize !<
[2801]	371	INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp !<
	372
	373	REAL(wp) :: eps=0.00001 !< used in calculations to avoid rounding errors
	374	REAL(wp) :: xx !< number of fine grid cells inside a coarse grid cell in x-direction
	375	REAL(wp) :: yy !< number of fine grid cells inside a coarse grid cell in y-direction
	376
	377	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
	378
	379	! TYPE(particle_type) :: dummy_part !< dummy particle (needed for size calculations)
	380
	381
	382	IF ( cpl_id > 1 ) THEN
	383	CALL c_copy_particle_to_coarse_grid
	384
	385	!
	386	!-- Child domain boundaries in the parent index space
	387
	388	icl = coarse_bound(1)
	389	icr = coarse_bound(2)
	390	jcs = coarse_bound(3)
	391	jcn = coarse_bound(4)
	392
	393	nr_partc = 0
	394
	395	DO i = icl, icr
	396	DO j = jcs, jcn
	397	nr_partc(j,i) = coarse_particles(j,i)%nr_particle
	398	ENDDO
	399	ENDDO
	400	part_adrc = 0
	401
	402	!
	403	!-- compute number of fine grid cells in coarse grid (one direction)
	404	xx = (cg%dx + eps) / dx ! +eps to avoid rounding error
	405	yy = (cg%dy + eps) / dy
	406	nr_fine_in_coarse = MAX( INT(xx), INT(yy) )
	407
	408	IF ( MOD( coord_x(0), cg%dx ) /= 0.0 .OR. MOD( coord_y(0), cg%dy ) /= 0.0 ) THEN
	409	nr_fine_in_coarse = nr_fine_in_coarse + 1
	410	ENDIF
	411
	412	!
	413	!-- Assign a number to my child PE to select different areas in the RMA window on server side
	414	!-- With this number a square of child PEs is defined which share the same coarse grid cells
	415
	416	n = nr_fine_in_coarse ! local variable n to make folloing statements shorter
	417	pe_offset = MOD( myidx, n ) * n + MOD( myidy, n)
	418	max_nr_particle_per_pe = max_nr_particle_in_rma_win / ( n * n )
	419	disp_offset = pe_offset * max_nr_particle_per_pe
[2809]	420	parsize = STORAGE_SIZE(zero_particle)/8
[2801]	421	DO ip = 1, me%inter_npes
	422
	423	ape => me%pes(ip)
	424
	425	target_disp = disp_offset
	426	DO ij = 1, ape%nrele
	427	j = ape%locind(ij)%j + jcs - 1
	428	i = ape%locind(ij)%i + icl - 1
	429	nr = nr_partc(j,i)
	430	IF( nr > 0 ) THEN
	431	IF ( target_disp + nr - disp_offset >= max_nr_particle_per_pe ) THEN
	432	WRITE(9,*) 'RMA window too small on child ', &
	433	target_disp + nr - disp_offset, &
	434	max_nr_particle_per_pe, max_nr_particle_in_rma_win
	435	message_string = 'RMA window too small on child'
	436	CALL message( 'pmci_create_child_arrays', 'PA0480', 3, 2, 0, 6, 0 ) ! PA number has to be adjusted
	437	ENDIF
	438	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip - 1, 0, particle_win_child, ierr )
	439	CALL MPI_PUT( coarse_particles(j,i)%parent_particles, &
[2808]	440	nr * parsize, MPI_BYTE, ip - 1, &
	441	target_disp, nr * parsize , &
[2801]	442	MPI_BYTE, particle_win_child, ierr )
	443	CALL MPI_WIN_UNLOCK( ip - 1, particle_win_child, ierr )
	444	part_adrc(j,i) = target_disp + 1
	445	target_disp = target_disp + nr
	446	ENDIF
	447	ENDDO
	448	ENDDO
	449
	450	CALL pmc_c_putbuffer ( particle_transfer = .TRUE. ) !Send new number of particle/column and offset to parent
	451
	452	ENDIF
	453
	454	END SUBROUTINE pmcp_c_send_particle_to_parent
	455	!------------------------------------------------------------------------------!
	456	! Description:
	457	! ------------
	458	!> parent routine:
	459	!> write particles into the MPI window
	460	!------------------------------------------------------------------------------!
	461	SUBROUTINE pmcp_p_fill_particle_win
	462
	463	IMPLICIT NONE
	464
	465	LOGICAL :: active_particle !< Particles located in the fine/child grid area are marked as active (to be transferred)
	466	LOGICAL,SAVE :: lfirst = .TRUE. !<
	467
	468	INTEGER(iwp) :: child_id !< id of the child model
	469	INTEGER(iwp) :: i !< x grid box index
	470	INTEGER(iwp) :: ierr !< error code
	471	INTEGER(iwp) :: ij !< combined xy index for the buffer array
	472	INTEGER(iwp) :: ip !< loop index (child PEs)
	473	INTEGER(iwp) :: j !< y grid box index
	474	INTEGER(iwp) :: k !< z grid box index
	475	INTEGER(iwp) :: m !< loop index (number of childs)
	476	INTEGER(iwp) :: n !< loop index (number of particles)
	477	INTEGER(iwp) :: nr_part_col !< Number of particles to transfer per column
	478	INTEGER(iwp) :: number_of_particles !<
	479	INTEGER(iwp) :: pindex !<
	480	INTEGER(iwp) :: tot_particle_count !< Total number of particles per child
	481
	482	REAL(wp) :: dx_child !< child grid spacing
	483	REAL(wp) :: dy_child !< child grid spacing
	484	REAL(wp) :: dz_child !< child grid spacing
	485	REAL(wp) :: ny_coord !< north coordinate of child grid
	486	REAL(wp) :: ny_coord_b !< north coordinate of child grid boundary
	487	REAL(wp) :: lx_coord !< left coordinate of child grid
	488	REAL(wp) :: lx_coord_b !< left coordinate of child grid boundary
	489	REAL(wp) :: rx_coord !< right coordinate of child grid
	490	REAL(wp) :: rx_coord_b !< right coordinate of child grid boundary
	491	REAL(wp) :: sy_coord !< south coordinate of child grid
	492	REAL(wp) :: sy_coord_b !< south coordinate of child grid boundary
	493	REAL(wp) :: uz_coord !< upper coordinate of child grid
	494	REAL(wp) :: uz_coord_b !< upper coordinate of child grid boundary
	495	REAL(wp) :: x !< particle position
	496	REAL(wp) :: xo !< origin of particle
	497	REAL(wp) :: y !< particle position
	498	REAL(wp) :: yo !< origin of particle
	499	REAL(wp) :: z !< particle position
	500
	501	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	502
	503	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
	504
	505	DO m = 1, get_number_of_childs()
	506
	507	child_id = get_childid(m)
	508
	509	CALL get_child_edges( m, lx_coord, lx_coord_b, rx_coord, rx_coord_b, &
	510	sy_coord, sy_coord_b, ny_coord, ny_coord_b, &
	511	uz_coord, uz_coord_b)
	512
	513	CALL get_child_gridspacing( m, dx_child, dy_child, dz_child )
	514
	515	IF ( lfirst ) THEN
	516	WRITE(9,'(a,5f10.2)') 'edges ',lx_coord,rx_coord,sy_coord,ny_coord,uz_coord
	517	WRITE(9,'(a,5f10.2)') 'edges boundary ',lx_coord_b,rx_coord_b,sy_coord_b,ny_coord_b,uz_coord_b
	518	WRITE(9,'(a,5f10.2)') 'child spacing ',dx_child, dy_child, dz_child,lower_left_coord_x,lower_left_coord_y
	519	ENDIF
	520	!
	521	!-- reset values for every child
	522	tot_particle_count = 0
	523	nr_part = 0
	524	part_adr = 0
	525	pindex = 1
	526
	527	buf_shape(1) = max_nr_particle_in_rma_win
	528	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
	529
	530	DO ip = 1, children(child_id)%inter_npes
	531
	532	ape => children(child_id)%pes(ip)
	533
	534	nr_part_col = 0
	535
	536	DO ij = 1, ape%nrele
	537
	538	!
	539	!-- Inside the PMC adressing of 3d arrays starts with 1
	540	i = ape%locind(ij)%i + nxl - nbgp - 1
	541	j = ape%locind(ij)%j + nys - nbgp - 1
	542	nr_part_col = 0 ! Number of particles to transfer per column
	543	part_adr(j,i) = pindex
	544
	545	DO k = nzb + 1, nzt
	546	number_of_particles = prt_count(k,j,i)
	547
	548	IF ( number_of_particles <= 0 ) CYCLE
	549
	550	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	551
	552	! Select particles within boundary area
	553
	554	DO n = 1, number_of_particles
	555	x = particles(n)%x
	556	y = particles(n)%y
	557	z = particles(n)%z
	558	!
	559	!-- check if the particle is located in the fine grid area
	560	active_particle = ((x > lx_coord .AND. x < rx_coord) .AND. &
	561	(y > sy_coord .AND. y < ny_coord) .AND. &
	562	(z > 0.000000001 .AND. z < uz_coord))
	563	IF ( active_particle .AND. particles(n)%particle_mask ) THEN
	564
	565	particle_in_win(pindex) = particles(n)
	566	!
	567	!-- Change particle positions and origin relative to global origin
	568	particle_in_win(pindex)%x = particle_in_win(pindex)%x + lower_left_coord_x
	569	particle_in_win(pindex)%y = particle_in_win(pindex)%y + lower_left_coord_y
	570	particle_in_win(pindex)%origin_x = particle_in_win(pindex)%origin_x + lower_left_coord_x
	571	particle_in_win(pindex)%origin_y = particle_in_win(pindex)%origin_y + lower_left_coord_y
	572
	573	tot_particle_count = tot_particle_count + 1
	574	nr_part_col = nr_part_col + 1
	575	pindex = pindex + 1
	576	IF ( pindex > max_nr_particle_in_rma_win ) THEN
	577	WRITE(9,*) 'RMA window too small on parent ',pindex, max_nr_particle_in_rma_win
	578	message_string = 'RMA window too small on parent'
	579	CALL message( 'pmci_create_child_arrays', 'PA0481', 3, 2, 0, 6, 0 ) ! PA number has to be adjusted
	580	ENDIF
	581	END IF
	582	ENDDO
	583	ENDDO
	584	nr_part(j,i) = nr_part_col
	585	ENDDO
	586	ENDDO
	587
	588	CALL pmc_s_fillbuffer( child_id, particle_transfer = .TRUE. )
	589	ENDDO
	590
	591	lfirst = .FALSE.
	592
	593	END SUBROUTINE pmcp_p_fill_particle_win
	594
	595	!------------------------------------------------------------------------------!
	596	! Description:
	597	! ------------
	598	!> parent routine:
	599	!> delete particles from the MPI window
	600	!------------------------------------------------------------------------------!
	601	SUBROUTINE pmcp_p_empty_particle_win
	602	IMPLICIT NONE
	603
	604	INTEGER(iwp) :: child_id !< model id of the child
	605	INTEGER(iwp) :: ip !< loop index (child PEs)
	606	INTEGER(iwp) :: m !< loop index (number of childs)
	607
	608	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	609
	610	DO m = 1, get_number_of_childs()
	611
	612	child_id = get_childid(m)
	613
	614	buf_shape(1) = max_nr_particle_in_rma_win
	615	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
	616
	617	!
	618	!-- In some cells of the coarse grid, there are contributions from more than one child process
	619	!-- Therfore p_copy_particle_to_org_grid is done for one child process per call
	620
	621	DO ip = 1, pmc_s_get_child_npes( child_id )
	622	nr_part = 0
	623	part_adr = 0
	624
	625	CALL pmc_s_getdata_from_buffer( child_id, particle_transfer = .TRUE., child_process_nr = ip )
	626
	627	CALL p_copy_particle_to_org_grid( m, child_id )
	628	ENDDO
	629
	630	ENDDO
	631
	632	END SUBROUTINE pmcp_p_empty_particle_win
	633
	634	!------------------------------------------------------------------------------!
	635	! Description:
	636	! ------------
	637	!> parent routine:
	638	!> After the transfer mark all parent particles that are still inside on of the
	639	!> child areas for deletion.
	640	!------------------------------------------------------------------------------!
	641	SUBROUTINE pmcp_p_delete_particles_in_fine_grid_area
	642
	643	IMPLICIT NONE
	644
	645	LOGICAL :: to_delete !< particles outside of model domain are marked as to_delete
	646
	647	INTEGER(iwp) :: i !< loop index (x grid)
	648	INTEGER(iwp) :: j !< loop index (y grid)
	649	INTEGER(iwp) :: k !< loop index (z grid)
	650	INTEGER(iwp) :: m !< loop index (number of particles)
	651	INTEGER(iwp) :: n !< loop index (number of childs)
	652
	653	REAL(wp) :: dx_child !< child grid spacing
	654	REAL(wp) :: dy_child !< child grid spacing
	655	REAL(wp) :: dz_child !< child grid spacing
	656	REAL(wp) :: ny_coord !< north coordinate of child grid
	657	REAL(wp) :: ny_coord_b !< north coordinate of child grid boundary
	658	REAL(wp) :: lx_coord !< left coordinate of child grid
	659	REAL(wp) :: lx_coord_b !< left coordinate of child grid boundary
	660	REAL(wp) :: rx_coord !< right coordinate of child grid
	661	REAL(wp) :: rx_coord_b !< right coordinate of child grid boundary
	662	REAL(wp) :: sy_coord !< south coordinate of child grid
	663	REAL(wp) :: sy_coord_b !< south coordinate of child grid boundary
	664	REAL(wp) :: uz_coord !< upper coordinate of child grid
	665	REAL(wp) :: uz_coord_b !< upper coordinate of child grid boundary
	666	REAL(wp) :: x !< particle position
	667	REAL(wp) :: y !< particle position
	668	REAL(wp) :: z !< particle position
	669
	670	DO m = 1, get_number_of_childs()
	671	CALL get_child_edges( m, lx_coord, lx_coord_b, rx_coord, rx_coord_b, &
	672	sy_coord, sy_coord_b, ny_coord, ny_coord_b, &
	673	uz_coord, uz_coord_b )
	674
	675
	676	CALL get_child_gridspacing( m, dx_child, dy_child, dz_child )
	677
	678	DO i = nxl, nxr
	679	DO j = nys, nyn
	680	DO k = nzb, nzt
	681	number_of_particles = prt_count(k,j,i)
	682
	683	IF ( number_of_particles == 0 ) CYCLE
	684
	685	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	686
	687	DO n = 1, number_of_particles
	688	x = particles(n)%x
	689	y = particles(n)%y
	690	z = particles(n)%z
	691
	692	to_delete = ((x > lx_coord .AND. x < rx_coord) .AND. &
	693	(y > sy_coord .AND. y < ny_coord) .AND. &
	694	(z > 0.000000001 .AND. z < uz_coord))
	695
	696	IF ( to_delete ) THEN
	697	particles(n)%particle_mask = .FALSE.
	698	ENDIF
	699	ENDDO
	700	ENDDO
	701	ENDDO
	702	ENDDO
	703
	704	ENDDO
	705
	706	END SUBROUTINE pmcp_p_delete_particles_in_fine_grid_area
	707	!------------------------------------------------------------------------------!
	708	! Description:
	709	! ------------
	710	!> general routine:
	711	!> print the total number of of the current model and its child models into a file
	712	!------------------------------------------------------------------------------!
	713	SUBROUTINE pmcp_g_print_number_of_particles (my_time,local_nr_particles)
	714
	715	USE pegrid, &
	716	ONLY: myid
	717
	718	IMPLICIT NONE
	719
	720	INTEGER(iwp),INTENT(IN) :: local_nr_particles !<
	721
	722	REAL(wp),INTENT(IN) :: my_time !<
	723
	724	LOGICAL, SAVE :: is_file_open=.FALSE. !<
	725
	726	INTEGER(iwp) :: child_id !<
	727	INTEGER(iwp) :: child_nr_particles !< total number of particles in all child models
	728	INTEGER(iwp) :: ierr !< error code
	729	INTEGER(iwp) :: m !< loop index (number of childs)
	730
	731	CHARACTER(LEN=16) :: fname !< filename
	732
	733	INTEGER(iwp),DIMENSION(2) :: ivalr !< integer value to be received
	734	INTEGER(iwp),DIMENSION(2) :: ivals !< integer value to be send
	735
	736
	737	child_nr_particles = 0
	738	IF ( myid == 0 ) THEN
	739	IF ( cpl_id > 1 ) THEN
	740	ivals(1) = local_nr_particles
	741	CALL pmc_send_to_parent( ivals, 1, 0, 400, ierr )
	742	ENDIF
	743	DO m = 1, SIZE( pmc_parent_for_child ) - 1
	744
	745	child_id = pmc_parent_for_child(m)
	746	CALL pmc_recv_from_child( child_id, ivalr, 1, 0, 400, ierr )
	747	child_nr_particles = child_nr_particles + ivalr(1)
	748	ENDDO
	749
	750	IF ( SIZE( pmc_parent_for_child ) > 1 ) THEN
	751	IF ( .NOT. is_file_open ) THEN !kk muss noch auf file_open umgestellt werden
	752	WRITE(fname,'(a,i2.2)') 'nr_particles_',cpl_id
	753	OPEN (333,file = fname)
	754	is_file_open = .true.
	755	ENDIF
	756	WRITE(333,'(f12.2,3i10)') my_time,local_nr_particles + child_nr_particles,local_nr_particles,child_nr_particles
	757	ENDIF
	758	ENDIF
	759
	760	END SUBROUTINE pmcp_g_print_number_of_particles
	761
	762	!------------------------------------------------------------------------------!
	763	!------------------------------------------------------------------------------!
	764	! Private subroutines
	765	!------------------------------------------------------------------------------!
	766	!------------------------------------------------------------------------------!
	767
	768	!------------------------------------------------------------------------------!
	769	! Description:
	770	! ------------
	771	!> child routine
	772	!> update the size of the local buffer (coarse_particles)
	773	!------------------------------------------------------------------------------!
	774	SUBROUTINE check_and_alloc_coarse_particle (ic,jc,nr,with_copy)
	775
	776	IMPLICIT NONE
	777
	778	INTEGER(iwp),INTENT(IN) :: ic !< coarse x grid index
	779	INTEGER(iwp),INTENT(IN) :: jc !< coarse y grid index
	780	INTEGER(iwp),INTENT(IN) :: nr !< number of particles to be transferred/stored in local buffer
	781
	782	LOGICAL,INTENT(IN),OPTIONAL :: with_copy !< copy particles in buffer? or reallocate empty buffer
	783
	784	LOGICAL :: with_copy_lo !< local variable of with copy
	785
	786	INTEGER(iwp) :: new_size !< new size of the local buffer
	787	INTEGER(iwp) :: old_size !< old size of the local buffer
	788
	789	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: tmp_particles_d !<
	790
	791	with_copy_lo = .FALSE.
	792	IF ( PRESENT( with_copy ) ) with_copy_lo = with_copy
	793
	794	IF ( .NOT. ALLOCATED( coarse_particles(jc,ic)%parent_particles ) ) THEN
	795	new_size = MAX( nr, Min_particles_per_column )
	796	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
	797	ELSEIF ( nr > SIZE( coarse_particles(jc,ic)%parent_particles ) ) THEN
	798
	799	old_size = SIZE( coarse_particles(jc,ic)%parent_particles )
	800	new_size = old_size * ( 1.0_wp + alloc_factor / 100.0_wp )
	801	new_size = MAX( nr, new_size, old_size + Min_particles_per_column )
	802
	803	!
	804	!-- Copy existing particles to new particle buffer
	805	IF ( with_copy_lo ) THEN
	806	ALLOCATE( tmp_particles_d(old_size) )
	807	tmp_particles_d(1:old_size) = coarse_particles(jc,ic)%parent_particles
	808
	809	DEALLOCATE( coarse_particles(jc,ic)%parent_particles )
	810	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
	811
	812	coarse_particles(jc,ic)%parent_particles(1:old_size) = tmp_particles_d(1:old_size)
	813	coarse_particles(jc,ic)%parent_particles(old_size+1:new_size) = zero_particle
	814
	815	DEALLOCATE( tmp_particles_d )
	816	!
	817	!-- allocate or reallocate an empty buffer
	818	ELSE
	819	DEALLOCATE( coarse_particles(jc,ic)%parent_particles )
	820	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
	821	ENDIF
	822	ENDIF
	823
	824	END SUBROUTINE check_and_alloc_coarse_particle
	825
	826	!------------------------------------------------------------------------------!
	827	! Description:
	828	! ------------
	829	!> child routine:
	830	!> copy/sort particles out of the local buffer into the respective grid boxes
	831	!------------------------------------------------------------------------------!
	832	SUBROUTINE c_copy_particle_to_child_grid
	833
	834	IMPLICIT NONE
	835
	836	INTEGER(iwp) :: ic !< coarse x grid index
	837	INTEGER(iwp) :: icl !< left boundary in coarse(parent) index space
	838	INTEGER(iwp) :: icr !< right boundary in coarse(parent) index space
	839	INTEGER(iwp) :: ip !< x grid index
	840	INTEGER(iwp) :: jc !< coarse y grid index
	841	INTEGER(iwp) :: jcn !< north boundary in coarse(parent) index space
	842	INTEGER(iwp) :: jcs !< south boundary in coarse(parent) index space
	843	INTEGER(iwp) :: jp !< y grid index
	844	INTEGER(iwp) :: kp !< z grid index
	845	INTEGER(iwp) :: n !< loop index (number of particles)
	846	INTEGER(iwp) :: nr !< short variable for name number or particles
	847
	848	REAL(wp) :: xc !< child x coordinate
	849	REAL(wp) :: xoc !< child x origin
	850	REAL(wp) :: yc !< child y coordinate
	851	REAL(wp) :: yoc !< child y origin
	852	REAL(wp) :: zc !< child z coordinate
	853
	854	!
	855	!-- Child domain boundaries in the parent index space
	856	icl = coarse_bound(1)
	857	icr = coarse_bound(2)
	858	jcs = coarse_bound(3)
	859	jcn = coarse_bound(4)
	860
	861	DO ic = icl, icr
	862	DO jc = jcs, jcn
	863	nr = coarse_particles(jc,ic)%nr_particle
	864
	865	IF ( nr > 0 ) THEN
	866	DO n = 1, nr
	867	xc = coarse_particles(jc,ic)%parent_particles(n)%x-lower_left_coord_x
	868	yc = coarse_particles(jc,ic)%parent_particles(n)%y-lower_left_coord_y
	869	zc = coarse_particles(jc,ic)%parent_particles(n)%z
	870	xoc = coarse_particles(jc,ic)%parent_particles(n)%origin_x-lower_left_coord_x
	871	yoc = coarse_particles(jc,ic)%parent_particles(n)%origin_y-lower_left_coord_y
	872	ip = xc / dx
	873	jp = yc / dy
	874	kp = nzt
	875	DO WHILE ( zw(kp-1) > zc .AND. kp > nzb + 1 ) ! kk search loop has to be optimzed !!!
	876	kp = kp - 1
	877	ENDDO
	878
	879	IF ( ip >= nxl .AND. ip <= nxr .AND. jp >= nys .AND. jp <= nyn ) THEN
	880	prt_count(kp,jp,ip) = prt_count(kp,jp,ip) + 1
	881	IF ( prt_count(kp,jp,ip) > SIZE( grid_particles(kp,jp,ip)%particles ) ) THEN
	882	CALL realloc_particles_array( ip, jp, kp )
	883	ENDIF
	884	coarse_particles(jc,ic)%parent_particles(n)%x = xc ! Adjust coordinates to child grid
	885	coarse_particles(jc,ic)%parent_particles(n)%y = yc
	886	coarse_particles(jc,ic)%parent_particles(n)%origin_x = xoc ! Adjust origins to child grid
	887	coarse_particles(jc,ic)%parent_particles(n)%origin_y = yoc
	888	grid_particles(kp,jp,ip)%particles(prt_count(kp,jp,ip)) = coarse_particles(jc,ic)%parent_particles(n)
	889	ENDIF
	890	ENDDO
	891	ENDIF
	892	ENDDO
	893	ENDDO
	894
	895	END SUBROUTINE c_copy_particle_to_child_grid
	896	!------------------------------------------------------------------------------!
	897	! Description:
	898	! ------------
	899	!> child routine:
	900	!> copy particles which left the model area into the local buffer
	901	!------------------------------------------------------------------------------!
	902	SUBROUTINE c_copy_particle_to_coarse_grid
	903
	904	IMPLICIT NONE
	905
	906	LOGICAL :: boundary_particle !<
	907
	908	INTEGER(iwp) :: i !< loop index (x grid)
	909	INTEGER(iwp) :: ic !< loop index (coarse x grid)
	910	INTEGER(iwp) :: icl !< left boundary in coarse(parent) index space
	911	INTEGER(iwp) :: icr !< left boundary in coarse(parent) index space
	912	INTEGER(iwp) :: ierr !< error code
	913	INTEGER(iwp) :: j !< loop index (y grid)
	914	INTEGER(iwp) :: jc !< loop index (coarse y grid)
	915	INTEGER(iwp) :: jcs !< south boundary in coarse(parent) index space
	916	INTEGER(iwp) :: jcn !< north boundary in coarse(parent) index space
	917	INTEGER(iwp) :: k !< loop index (z grid)
	918	INTEGER(iwp) :: n !< loop index (number of particles)
	919
	920	REAL(iwp) :: x !< x coordinate
	921	REAL(iwp) :: xo !< x origin
	922	REAL(iwp) :: x_left !< absolute left boundary
	923	REAL(iwp) :: x_right !< absolute right boundary
	924	REAL(iwp) :: y !< left boundary in coarse(parent) index space
	925	REAL(iwp) :: yo !< y origin
	926	REAL(iwp) :: y_north !< absolute north boundary
	927	REAL(iwp) :: y_south !< absoulte south boundary
	928	REAL(iwp) :: z !< z coordinate
	929
	930	!
	931	!-- Child domain boundaries in the parent index space
	932
	933	icl = coarse_bound(1)
	934	icr = coarse_bound(2)
	935	jcs = coarse_bound(3)
	936	jcn = coarse_bound(4)
	937
	938	!
	939	!-- absolute coordinates
	940	x_left = coord_x(0)
	941	x_right = coord_x(nx) + dx
	942	y_south = coord_y(0)
	943	y_north = coord_y(ny) + dy
	944
	945	! Clear Particle Buffer
	946
	947	DO ic = icl, icr
	948	DO jc = jcs, jcn
	949	coarse_particles(jc,ic)%nr_particle = 0
	950	ENDDO
	951	ENDDO
	952
	953	!
	954	!-- Determine particles which leave the inner area in east or west dirextion
	955	!-- Compute only first (nxl) and last (nxr) loop iterration.
	956	DO i = nxl, nxr
	957	DO j = nys, nyn
	958	DO k = nzb + 1, nzt
	959	number_of_particles = prt_count(k,j,i)
	960	IF ( number_of_particles <= 0 ) CYCLE
	961	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	962	DO n = 1, number_of_particles
	963	IF ( particles(n)%particle_mask ) THEN
	964	x = particles(n)%x+ lower_left_coord_x
	965	y = particles(n)%y+ lower_left_coord_y
	966	xo = particles(n)%origin_x + lower_left_coord_x
	967	yo = particles(n)%origin_y + lower_left_coord_y
	968	z = particles(n)%z
	969
	970	boundary_particle = .FALSE.
	971	boundary_particle = boundary_particle .OR. (x < x_left .OR. x > x_right)
	972	boundary_particle = boundary_particle .OR. (y < y_south .OR. y > y_north)
	973	boundary_particle = boundary_particle .OR. (z > zw(nzt))
	974
	975	IF ( boundary_particle ) THEN
	976	ic = x / cg%dx !TODO anpassen auf Mehrfachnesting
	977	jc = y / cg%dy
	978
	979	IF ( ic >= icl .AND. ic <= icr .AND. jc >= jcs .AND. jc <= jcn ) THEN
	980	coarse_particles(jc,ic)%nr_particle = coarse_particles(jc,ic)%nr_particle + 1
	981	CALL check_and_alloc_coarse_particle( ic, jc, coarse_particles(jc,ic)%nr_particle, with_copy=.TRUE. )
	982
	983	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle) = particles(n)
	984	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle)%x = x !adapt to global coordinates
	985	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle)%y = y
	986	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle)%origin_x = xo
	987	coarse_particles(jc,ic)%parent_particles(coarse_particles(jc,ic)%nr_particle)%origin_y = yo
	988	!-- Mark particle as deleted after copying it to the transfer buffer
	989	grid_particles(k,j,i)%particles(n)%particle_mask = .FALSE.
	990	ELSE
	991	WRITE(9,'(a,10i6)') 'This should not happen ',i,j,k,ic,jc,icl,icr,jcs,jcn
	992	CALL MPI_Abort( MPI_COMM_WORLD, 9999, ierr )
	993	ENDIF
	994	ENDIF
	995	ENDIF
	996	ENDDO
	997	ENDDO
	998	ENDDO
	999	ENDDO
	1000
	1001	!
	1002	!- Pack particles (eliminate those marked for deletion),
	1003	!- determine new number of particles
	1004	CALL lpm_sort_in_subboxes
	1005
	1006	END SUBROUTINE c_copy_particle_to_coarse_grid
	1007	!------------------------------------------------------------------------------!
	1008	! Description:
	1009	! ------------
	1010	!> parent routine:
	1011	!> copy/sort particles from the MPI window into the respective grid boxes
	1012	!------------------------------------------------------------------------------!
	1013	SUBROUTINE p_copy_particle_to_org_grid( m, child_id )
	1014
	1015	IMPLICIT NONE
	1016
	1017	INTEGER(iwp),INTENT(IN) :: child_id !<
	1018	INTEGER(iwp),INTENT(IN) :: m !<
	1019
	1020	INTEGER(iwp) :: i !< loop index (x grid)
	1021	INTEGER(iwp) :: j !< loop index (y grid)
	1022	INTEGER(iwp) :: k !< loop index (z grid)
	1023	INTEGER(iwp) :: n !< loop index (nr part)
	1024	INTEGER(iwp) :: nr !< short variable name for nr_part
	1025	INTEGER(iwp) :: pindex !< short variable name part_adr
	1026
	1027	REAL(iwp) :: x !< x coordinate
	1028	REAL(iwp) :: xo !< x origin
	1029	REAL(iwp) :: y !< y coordinate
	1030	REAL(iwp) :: yo !< y origin
	1031	REAL(iwp) :: z !< z coordinate
	1032
	1033	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	1034
	1035	buf_shape(1) = max_nr_particle_in_rma_win
	1036	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
	1037
	1038	DO i = nxl, nxr
	1039	DO j = nys, nyn
	1040	nr = nr_part(j,i)
	1041	IF ( nr > 0 ) THEN
	1042	pindex = part_adr(j,i)
	1043	DO n = 1, nr
	1044	x = particle_in_win(pindex)%x-lower_left_coord_x
	1045	y = particle_in_win(pindex)%y-lower_left_coord_y
	1046	z = particle_in_win(pindex)%z
	1047	xo = particle_in_win(pindex)%origin_x-lower_left_coord_x
	1048	yo = particle_in_win(pindex)%origin_y-lower_left_coord_y
	1049	k = nzt + 1
	1050	DO WHILE ( zw(k-1) > z .AND. k > nzb + 1 ) ! kk search loop has to be optimzed !!!
	1051	k = k - 1
	1052	END DO
	1053
	1054	prt_count(k,j,i) = prt_count(k,j,i) + 1
	1055	IF ( prt_count(k,j,i) > SIZE( grid_particles(k,j,i)%particles ) ) THEN
	1056	CALL realloc_particles_array( i, j, k )
	1057	ENDIF
	1058	grid_particles(k,j,i)%particles(prt_count(k,j,i)) = particle_in_win(pindex)
	1059
	1060	!
	1061	!-- Update particle positions and origins relative to parent domain
	1062	grid_particles(k,j,i)%particles(prt_count(k,j,i))%x = x
	1063	grid_particles(k,j,i)%particles(prt_count(k,j,i))%y = y
	1064	grid_particles(k,j,i)%particles(prt_count(k,j,i))%origin_x = xo
	1065	grid_particles(k,j,i)%particles(prt_count(k,j,i))%origin_y = yo
	1066	pindex = pindex + 1
	1067	ENDDO
	1068	ENDIF
	1069	ENDDO
	1070	ENDDO
	1071
	1072	END SUBROUTINE p_copy_particle_to_org_grid
	1073
	1074
	1075	END MODULE pmc_particle_interface

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