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source: palm/trunk/SOURCE/pmc_particle_interface.f90 @ 4628

Last change on this file since 4628 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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[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	!
[4360]	18	! Copyright 1997-2020 Leibniz Universitaet Hannover
[2801]	19	!------------------------------------------------------------------------------!
	20	!
	21	! Current revisions:
	22	! ------------------
	23	!
[3049]	24	!
[2801]	25	! Former revisions:
[2809]	26	! -----------------!
	27	! $Id: pmc_particle_interface.f90 4444 2020-03-05 15:59:50Z raasch $
[4444]	28	! bugfix: preprocessor directives for serial mode added
	29	!
	30	! 4360 2020-01-07 11:25:50Z suehring
[4182]	31	! Corrected "Former revisions" section
	32	!
	33	! 4043 2019-06-18 16:59:00Z schwenkel
[4043]	34	! Remove min_nr_particle
	35	!
	36	! 4017 2019-06-06 12:16:46Z schwenkel
[3948]	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
[3883]	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
[3241]	44	! unused variables removed
[4182]	45	!
	46	! Initial Version (by Klaus Ketelsen)
	47	!
[3241]	48	!
[2801]	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	!------------------------------------------------------------------------------!
[4444]	55	#if defined( __parallel )
[2801]	56
	57	USE, INTRINSIC :: ISO_C_BINDING
[2841]	58
[2967]	59	#if defined( __parallel ) && !defined( __mpifh )
[2801]	60	USE MPI
[2841]	61	#endif
[2801]	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, &
[4043]	83	ibc_par_t, ibc_par_lr, ibc_par_ns, alloc_factor
[2801]	84
[4017]	85	! USE lpm_pack_and_sort_mod
[2801]	86
[2967]	87	#if defined( __parallel )
[2801]	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, &
[3883]	99	ONLY: cpl_id, get_number_of_children, nr_part, part_adr, nested_run, &
	100	get_childid, get_child_edges, nr_partc, part_adrc, &
[3948]	101	parent_bound, coord_x, coord_y, pg, get_child_gridspacing, &
[2801]	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
[2967]	110	#endif
[2801]	111
	112	IMPLICIT NONE
[2841]	113
[2967]	114	#if defined( __parallel ) && defined( __mpifh )
[2841]	115	INCLUDE "mpif.h"
	116	#endif
	117
[2801]	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
[2967]	194	#if defined( __parallel )
	195
[3883]	196	nr_childs = get_number_of_children()
[2801]	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
[3046]	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 )
[2801]	214	ENDIF
	215
	216	IF ( ibc_par_lr /= 3 ) THEN
	217	ibc_par_lr = 3
[3046]	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 )
[2801]	220	ENDIF
	221
	222	IF ( ibc_par_ns /= 3 ) THEN
	223	ibc_par_ns = 3
[3046]	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 )
[2801]	226	ENDIF
	227
	228	ENDIF
	229
[2967]	230	#endif
[2801]	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
[3948]	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
[2801]	248	INTEGER(iwp) :: child_id !< Id of a child model
	249	INTEGER(iwp) :: nr_childs !< Number of child models of the current model
	250
[2884]	251	INTEGER :: parsize !<
[2801]	252	TYPE(C_PTR), SAVE :: ptr !<
	253
	254	TYPE(particle_type),DIMENSION(:),POINTER :: win_buffer !<
	255
	256	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	257
[2967]	258	#if defined( __parallel )
	259	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
	260	INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !<
	261
[2801]	262	!
	263	!-- If the model has a parent model prepare the structures for transfer
	264	IF ( cpl_id > 1 ) THEN
[2809]	265
[2884]	266	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle)/8
[2809]	267
[2884]	268	CALL MPI_ALLOC_MEM( parsize_mpi_address_kind , MPI_INFO_NULL, ptr, ierr )
	269	parsize = parsize_mpi_address_kind
[2801]	270	buf_shape(1) = 1
	271	CALL C_F_POINTER( ptr, win_buffer, buf_shape )
[2884]	272	CALL MPI_WIN_CREATE( win_buffer, parsize_mpi_address_kind, parsize, &
[2801]	273	MPI_INFO_NULL, me%intra_comm, particle_win_child, &
	274	ierr )
	275
	276	!
	277	!-- Child domain boundaries in the parent index space
[3948]	278	ipl = parent_bound(1)
	279	ipr = parent_bound(2)
	280	jps = parent_bound(3)
	281	jpn = parent_bound(4)
[2801]	282
[3948]	283	ALLOCATE( coarse_particles(jps:jpn,ipl:ipr) )
[2801]	284
	285	coarse_particles(:,:)%nr_particle = 0
	286	ENDIF
	287
	288	!
	289	!-- If the model has child models prepare the structures for transfer
[3883]	290	nr_childs = get_number_of_children()
[2801]	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)
[2884]	296	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle)/8
	297	parsize = parsize_mpi_address_kind
[2809]	298
[2884]	299	winsize = max_nr_particle_in_rma_win * parsize_mpi_address_kind
[2801]	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 )
[2884]	303	CALL MPI_WIN_CREATE( win_buffer, winsize, parsize, MPI_INFO_NULL, &
	304	children(child_id)%intra_comm, &
[2801]	305	particle_win_parent(m), ierr )
	306	ENDDO
	307	ENDIF
	308
[2967]	309	#endif
[2801]	310	END SUBROUTINE pmcp_g_alloc_win
[2967]	311
	312
[2801]	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
[3948]	324	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
[2801]	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
[3948]	329	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
[2801]	330	INTEGER(iwp) :: nr !< number of particles to receive from a parent box
	331
[2884]	332	INTEGER :: parsize !<
[2967]	333
	334	#if defined( __parallel )
	335	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
	336
[2884]	337	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
[2801]	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
[3948]	352	ipl = parent_bound(1)
	353	jps = parent_bound(3)
[2801]	354
	355	DO ip = 1, me%inter_npes
	356
	357	ape => me%pes(ip)
	358
	359	DO ij = 1, ape%nrele
[3948]	360	j = ape%locind(ij)%j + jps - 1
	361	i = ape%locind(ij)%i + ipl - 1
[2801]	362	nr = nr_partc(j,i)
	363	IF ( nr > 0 ) THEN
	364
	365	CALL check_and_alloc_coarse_particle (i, j, nr)
[2884]	366	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle)/8
	367	parsize = parsize_mpi_address_kind
[2801]	368	target_disp = part_adrc(j,i) - 1
[2884]	369	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip - 1, 0, &
	370	particle_win_child, ierr )
[2801]	371	CALL MPI_GET( coarse_particles(j,i)%parent_particles, &
[2884]	372	nr * parsize, MPI_BYTE, ip - 1, target_disp, &
	373	nr * parsize, MPI_BYTE, particle_win_child, ierr )
[2801]	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
[2967]	383	#endif
[2801]	384	END SUBROUTINE pmcp_c_get_particle_from_parent
[2967]	385
	386
[2801]	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
[3948]	399	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
	400	INTEGER(iwp) :: ipr !< right boundary in coarse(parent) index space
[2801]	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
[3948]	405	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
	406	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
[2801]	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
[2884]	412	INTEGER :: parsize !<
[2801]	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
[2967]	418	! TYPE(particle_type) :: dummy_part !< dummy particle (needed for size calculations)
	419
	420	#if defined( __parallel )
[2801]	421	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
[2967]	422
	423	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
	424	INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp !<
[2801]	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
[3948]	433	ipl = parent_bound(1)
	434	ipr = parent_bound(2)
	435	jps = parent_bound(3)
	436	jpn = parent_bound(4)
[2801]	437
	438	nr_partc = 0
	439
[3948]	440	DO i = ipl, ipr
	441	DO j = jps, jpn
[2801]	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)
[3883]	449	xx = ( pg%dx + eps ) / dx ! +eps to avoid rounding error
	450	yy = ( pg%dy + eps ) / dy
[2801]	451	nr_fine_in_coarse = MAX( INT(xx), INT(yy) )
	452
[3883]	453	IF ( MOD( coord_x(0), pg%dx ) /= 0.0 .OR. MOD( coord_y(0), pg%dy ) /= 0.0 ) THEN
[2801]	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
[2884]	465	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle)/8
	466	parsize = parsize_mpi_address_kind
[2801]	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
[3948]	473	j = ape%locind(ij)%j + jps - 1
	474	i = ape%locind(ij)%i + ipl - 1
[2801]	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'
[3046]	482	CALL message( 'pmci_create_child_arrays', 'PA0480', 3, 2, 0, 6, 0 )
[2801]	483	ENDIF
[2884]	484	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip - 1, 0, &
	485	particle_win_child, ierr )
[2801]	486	CALL MPI_PUT( coarse_particles(j,i)%parent_particles, &
[2884]	487	nr * parsize, MPI_BYTE, ip - 1, target_disp, &
	488	nr * parsize, MPI_BYTE, particle_win_child, ierr )
[2801]	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
[2967]	500	#endif
[2801]	501	END SUBROUTINE pmcp_c_send_particle_to_parent
[2967]	502
	503
[2801]	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
[2967]	549	#if defined( __parallel )
[2801]	550	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
	551
[3883]	552	DO m = 1, get_number_of_children()
[2801]	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
[3241]	589	nr_part_col = 0 ! Number of particles to transfer per column
[2801]	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
[2967]	640	#endif
[2801]	641	END SUBROUTINE pmcp_p_fill_particle_win
[2967]	642
[2801]	643
	644	!------------------------------------------------------------------------------!
	645	! Description:
	646	! ------------
	647	!> parent routine:
	648	!> delete particles from the MPI window
	649	!------------------------------------------------------------------------------!
	650	SUBROUTINE pmcp_p_empty_particle_win
[2967]	651
[2801]	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
[2967]	660	#if defined( __parallel )
[3883]	661	DO m = 1, get_number_of_children()
[2801]	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	!
[3241]	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 )
[2801]	673
	674	nr_part = 0
	675	part_adr = 0
	676
[3241]	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 )
[2801]	680	ENDDO
	681
	682	ENDDO
	683
[2967]	684	#endif
[2801]	685	END SUBROUTINE pmcp_p_empty_particle_win
[2967]	686
	687
[2801]	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
[2967]	724	#if defined( __parallel )
[3883]	725	DO m = 1, get_number_of_children()
[2801]	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
[2967]	761	#endif
[2801]	762	END SUBROUTINE pmcp_p_delete_particles_in_fine_grid_area
[2967]	763
	764
[2801]	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
[2967]	794	#if defined( __parallel )
[2801]	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
[2967]	818	#endif
[2801]	819	END SUBROUTINE pmcp_g_print_number_of_particles
	820
[2967]	821
[2801]	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
[2967]	851	#if defined( __parallel )
[2801]	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
[2967]	885	#endif
[2801]	886	END SUBROUTINE check_and_alloc_coarse_particle
	887
[2967]	888
[2801]	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
[3948]	900	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
	901	INTEGER(iwp) :: ipr !< right boundary in coarse(parent) index space
[2801]	902	INTEGER(iwp) :: ip !< x grid index
	903	INTEGER(iwp) :: jc !< coarse y grid index
[3948]	904	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
	905	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
[2801]	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
[2967]	917	#if defined( __parallel )
[2801]	918	!
	919	!-- Child domain boundaries in the parent index space
[3948]	920	ipl = parent_bound(1)
	921	ipr = parent_bound(2)
	922	jps = parent_bound(3)
	923	jpn = parent_bound(4)
[2801]	924
[3948]	925	DO ic = ipl, ipr
	926	DO jc = jps, jpn
[2801]	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
[4017]	946	CALL pmc_realloc_particles_array( ip, jp, kp )
[2801]	947	ENDIF
	948	coarse_particles(jc,ic)%parent_particles(n)%x = xc ! Adjust coordinates to child grid
[3241]	949	coarse_particles(jc,ic)%parent_particles(n)%y = yc
[2801]	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
[2967]	959	#endif
[2801]	960	END SUBROUTINE c_copy_particle_to_child_grid
[2967]	961
	962
[2801]	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)
[3948]	977	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
	978	INTEGER(iwp) :: ipr !< left boundary in coarse(parent) index space
[2801]	979	INTEGER(iwp) :: ierr !< error code
	980	INTEGER(iwp) :: j !< loop index (y grid)
	981	INTEGER(iwp) :: jc !< loop index (coarse y grid)
[3948]	982	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
	983	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
[2801]	984	INTEGER(iwp) :: k !< loop index (z grid)
	985	INTEGER(iwp) :: n !< loop index (number of particles)
	986
[3123]	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
[2801]	996
[2967]	997	#if defined( __parallel )
[2801]	998	!
	999	!-- Child domain boundaries in the parent index space
	1000
[3948]	1001	ipl = parent_bound(1)
	1002	ipr = parent_bound(2)
	1003	jps = parent_bound(3)
	1004	jpn = parent_bound(4)
[2801]	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
[3948]	1015	DO ic = ipl, ipr
	1016	DO jc = jps, jpn
[2801]	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
[3883]	1044	ic = x / pg%dx !TODO anpassen auf Mehrfachnesting
	1045	jc = y / pg%dy
[2801]	1046
[3948]	1047	IF ( ic >= ipl .AND. ic <= ipr .AND. jc >= jps .AND. jc <= jpn ) THEN
[2801]	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
[3948]	1059	WRITE(9,'(a,10i6)') 'This should not happen ',i,j,k,ic,jc,ipl,ipr,jps,jpn
[2801]	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
[4017]	1072	! CALL lpm_sort_in_subboxes
[2801]	1073
[2967]	1074	#endif
[2801]	1075	END SUBROUTINE c_copy_particle_to_coarse_grid
[2967]	1076
	1077
[2801]	1078	!------------------------------------------------------------------------------!
	1079	! Description:
	1080	! ------------
	1081	!> parent routine:
	1082	!> copy/sort particles from the MPI window into the respective grid boxes
	1083	!------------------------------------------------------------------------------!
[3241]	1084	SUBROUTINE p_copy_particle_to_org_grid( m )
[2801]	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
[3123]	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
[2801]	1102
	1103	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	1104
[2967]	1105	#if defined( __parallel )
[2801]	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
[3948]	1121	DO WHILE ( zw(k-1) > z .AND. k > nzb + 1 ) ! kk search loop has to be optimzed !!!
[2801]	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
[4017]	1127	CALL pmc_realloc_particles_array( i, j, k )
[2801]	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
[2967]	1142
	1143	#endif
[2801]	1144	END SUBROUTINE p_copy_particle_to_org_grid
[4017]	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 )
[2801]	1154
[4017]	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 !<
[2801]	1159
[4017]	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
[4043]	1173	new_size = MAX( new_size, 1, old_size + 1 )
[4017]	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
[4444]	1205	#endif
[2801]	1206	END MODULE pmc_particle_interface

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