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source: palm/trunk/SOURCE/pmc_particle_interface.f90 @ 4869

Last change on this file since 4869 was 4828, checked in by Giersch, 4 years ago
Copyright updated to year 2021, interface pmc_sort removed to accelarate the nesting code
Property svn:keywords set to `Id`
File size: 51.6 KB

Rev	Line
[2801]	1	MODULE pmc_particle_interface
[4649]	2	!--------------------------------------------------------------------------------------------------!
	3	! This file is part of the PALM model system.
[2801]	4	!
[4649]	5	! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General
	6	! Public License as published by the Free Software Foundation, either version 3 of the License, or
	7	! (at your option) any later version.
[2801]	8	!
[4649]	9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
	10	! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
	11	! Public License for more details.
[2801]	12	!
[4649]	13	! You should have received a copy of the GNU General Public License along with PALM. If not, see
	14	! <http://www.gnu.org/licenses/>.
[2801]	15	!
[4828]	16	! Copyright 1997-2021 Leibniz Universitaet Hannover
[4649]	17	!--------------------------------------------------------------------------------------------------!
[2801]	18	!
[4649]	19	!
[2801]	20	! Current revisions:
[4649]	21	! -----------------
[4629]	22	!
	23	!
[2801]	24	! Former revisions:
[4629]	25	! -----------------
[2809]	26	! $Id: pmc_particle_interface.f90 4828 2021-01-05 11:21:41Z schwenkel $
[4649]	27	! File re-formatted to follow the PALM coding standard
	28	!
	29	!
	30	! 4629 2020-07-29 09:37:56Z raasch
	31	! Support for MPI Fortran77 interface (mpif.h) removed
	32	!
[4629]	33	! 4444 2020-03-05 15:59:50Z raasch
[4649]	34	! Bugfix: preprocessor directives for serial mode added
	35	!
[4444]	36	! 4360 2020-01-07 11:25:50Z suehring
[4182]	37	! Corrected "Former revisions" section
[4649]	38	!
[4182]	39	! 4043 2019-06-18 16:59:00Z schwenkel
[4043]	40	! Remove min_nr_particle
[4649]	41	!
[4043]	42	! 4017 2019-06-06 12:16:46Z schwenkel
[4649]	43	! Coarse bound renamed as parent_bound and icl, icr, jcs, jcn as ipl, ipr, jps, jpn.
	44	!
[3948]	45	! 3883 2019-04-10 12:51:50Z hellstea
[4649]	46	! Function get_number_of_childs renamed to get_number_of_children and cg renamed to pg according to
	47	! their definitions in pmc_interface_mod
	48	!
[3883]	49	! 3655 2019-01-07 16:51:22Z knoop
[4649]	50	! Unused variables removed
[4182]	51	!
	52	! Initial Version (by Klaus Ketelsen)
	53	!
[4649]	54	!
	55	!--------------------------------------------------------------------------------------------------!
[2801]	56	! Description:
	57	! ------------
[4649]	58	! Introduce particle transfer in nested models.
	59	! Interface to palm lpm model to handel particle transfer between parent and child model.
	60	!--------------------------------------------------------------------------------------------------!
[4444]	61	#if defined( __parallel )
[2801]	62
	63	USE, INTRINSIC :: ISO_C_BINDING
[2841]	64
[2801]	65	USE MPI
	66
	67	USE kinds
	68
[4649]	69	USE pegrid, &
	70	ONLY: myidx, &
	71	myidy
[2801]	72
[4649]	73	USE indices, &
	74	ONLY: nbgp, &
	75	nx, &
	76	nxl, &
	77	nxr, &
	78	nxlg, &
	79	nxrg, &
	80	ny, &
	81	nys, &
	82	nyn, &
	83	nysg, &
	84	nyng, &
	85	nzb, &
	86	nzt
[2801]	87
	88
[4649]	89	USE grid_variables, &
	90	ONLY: dx, &
	91	dy
	92
	93	USE arrays_3d, &
[2801]	94	ONLY: zw
	95
[4649]	96	USE control_parameters, &
[2801]	97	ONLY: message_string
	98
[4649]	99	USE particle_attributes, &
	100	ONLY: alloc_factor, &
	101	grid_particles, &
	102	ibc_par_lr, &
	103	ibc_par_ns, &
	104	ibc_par_t, &
	105	particles, &
	106	particle_type, &
	107	prt_count, &
	108	number_of_particles, &
	109	zero_particle
[2801]	110
[4649]	111
	112
	113
	114
[4017]	115	! USE lpm_pack_and_sort_mod
[2801]	116
[2967]	117	#if defined( __parallel )
[4649]	118	USE pmc_general, &
[2801]	119	ONLY: pedef
	120
[4649]	121	USE pmc_parent, &
	122	ONLY: children, &
	123	pmc_s_fillbuffer, &
	124	pmc_s_getdata_from_buffer, &
[2801]	125	pmc_s_get_child_npes
	126
[4649]	127	USE pmc_child, &
	128	ONLY: me, &
	129	pmc_c_getbuffer, &
	130	pmc_c_putbuffer
[2801]	131
[4649]	132	USE pmc_interface, &
	133	ONLY: coord_x, &
	134	coord_y, &
	135	cpl_id, &
	136	get_childid, &
	137	get_child_edges, &
	138	get_child_gridspacing, &
	139	get_number_of_children, &
	140	lower_left_coord_x, &
	141	lower_left_coord_y, &
	142	nr_part, &
	143	nr_partc, &
	144	parent_bound, &
	145	part_adr, &
	146	part_adrc, &
	147	pg, &
	148	nested_run
[2801]	149
[4649]	150
	151	USE pmc_handle_communicator, &
[2801]	152	ONLY: pmc_parent_for_child
	153
[4649]	154	USE pmc_mpi_wrapper, &
	155	ONLY: pmc_recv_from_child, &
	156	pmc_send_to_parent
[2801]	157
[2967]	158	#endif
[2801]	159
	160	IMPLICIT NONE
[2841]	161
	162
[2801]	163	PRIVATE
	164	SAVE
	165
	166	TYPE coarse_particle_def
[4649]	167	INTEGER(iwp) :: nr_particle !<
	168
	169	TYPE(particle_type),ALLOCATABLE,DIMENSION(:) :: parent_particles !<
[2801]	170	END TYPE coarse_particle_def
	171
[4649]	172	INTEGER(iwp),PARAMETER :: max_nr_particle_in_rma_win = 100000 !<
	173	INTEGER(iwp),PARAMETER :: min_particles_per_column = 100 !<
[2801]	174
	175
[4649]	176	INTEGER(iwp) :: nr_fine_in_coarse !< Number of fine grid cells in coarse grid (one direction)
	177	INTEGER(iwp) :: particle_win_child !<
[2801]	178
[4649]	179	INTEGER(iwp),ALLOCATABLE,DIMENSION(:) :: particle_win_parent !<
[2801]	180
[4649]	181	TYPE(C_PTR), ALLOCATABLE,DIMENSION(:) :: buf_ptr !<
[2801]	182
[4649]	183	TYPE(particle_type), DIMENSION(:),POINTER :: particle_in_win !<
	184
	185	TYPE(coarse_particle_def),ALLOCATABLE,DIMENSION(:,:) :: coarse_particles !<
	186
	187
	188
[2801]	189	INTERFACE pmcp_g_init
	190	MODULE PROCEDURE pmcp_g_init
	191	END INTERFACE pmcp_g_init
	192
	193	INTERFACE pmcp_g_alloc_win
	194	MODULE PROCEDURE pmcp_g_alloc_win
	195	END INTERFACE pmcp_g_alloc_win
	196
	197	INTERFACE pmcp_c_get_particle_from_parent
	198	MODULE PROCEDURE pmcp_c_get_particle_from_parent
	199	END INTERFACE pmcp_c_get_particle_from_parent
	200
	201	INTERFACE pmcp_c_send_particle_to_parent
	202	MODULE PROCEDURE pmcp_c_send_particle_to_parent
	203	END INTERFACE pmcp_c_send_particle_to_parent
	204
	205	INTERFACE pmcp_p_fill_particle_win
	206	MODULE PROCEDURE pmcp_p_fill_particle_win
	207	END INTERFACE pmcp_p_fill_particle_win
	208
	209	INTERFACE pmcp_p_empty_particle_win
	210	MODULE PROCEDURE pmcp_p_empty_particle_win
	211	END INTERFACE pmcp_p_empty_particle_win
	212
	213	INTERFACE pmcp_g_print_number_of_particles
	214	MODULE PROCEDURE pmcp_g_print_number_of_particles
	215	END INTERFACE pmcp_g_print_number_of_particles
	216
	217	INTERFACE pmcp_p_delete_particles_in_fine_grid_area
	218	MODULE PROCEDURE pmcp_p_delete_particles_in_fine_grid_area
	219	END INTERFACE pmcp_p_delete_particles_in_fine_grid_area
	220
	221	PUBLIC pmcp_g_init, pmcp_g_alloc_win, pmcp_c_get_particle_from_parent
	222	PUBLIC pmcp_c_send_particle_to_parent, pmcp_p_fill_particle_win, pmcp_g_print_number_of_particles
	223	PUBLIC pmcp_p_empty_particle_win, pmcp_p_delete_particles_in_fine_grid_area
	224
	225	CONTAINS
	226
[4649]	227	!--------------------------------------------------------------------------------------------------!
[2801]	228	! Description:
	229	! ------------
[4649]	230	!> General routine:
	231	!> Initializing actions of the particle interface check particle boundary conditions for the child
	232	!> models
	233	!--------------------------------------------------------------------------------------------------!
[2801]	234	SUBROUTINE pmcp_g_init
[4649]	235
[2801]	236	IMPLICIT NONE
	237
[4649]	238	INTEGER(iwp) :: nr_childs !< Number of child models of the current model
	239
[2967]	240	#if defined( __parallel )
	241
[3883]	242	nr_childs = get_number_of_children()
[2801]	243	!
	244	!-- Check if the current model has child models
[4649]	245	IF ( nr_childs > 0 ) THEN
[2801]	246	ALLOCATE( nr_part(nysg:nyng, nxlg:nxrg) )
	247	ALLOCATE( part_adr(nysg:nyng, nxlg:nxrg) )
[4649]	248	nr_part = 0
	249	part_adr = 0
[2801]	250	ENDIF
	251
	252	!
	253	!-- Set the boundary conditions to nested for all non root (i.e child) models
[4649]	254	IF ( cpl_id > 1 ) THEN
	255
	256	IF ( ibc_par_t /= 3 ) THEN
[2801]	257	ibc_par_t = 3
[3046]	258	message_string = 'In Child model: ibc_par_t is automatically set to nested '
	259	CALL message( 'pmcp_g_init ', 'PA0477', 0, 1, 0, 6, 0 )
[2801]	260	ENDIF
[4649]	261
	262	IF ( ibc_par_lr /= 3 ) THEN
[2801]	263	ibc_par_lr = 3
[3046]	264	message_string = 'In Child model: ibc_par_lr is automatically set to nested '
	265	CALL message( 'pmcp_g_init ', 'PA0478', 0, 1, 0, 6, 0 )
[2801]	266	ENDIF
[4649]	267
	268	IF ( ibc_par_ns /= 3 ) THEN
[2801]	269	ibc_par_ns = 3
[3046]	270	message_string = 'In Child model: ibc_par_ns is automatically set to nested '
	271	CALL message( 'pmcp_g_init ', 'PA0479', 0, 1, 0, 6, 0 )
[2801]	272	ENDIF
[4649]	273
[2801]	274	ENDIF
	275
[2967]	276	#endif
[2801]	277	END SUBROUTINE pmcp_g_init
[4649]	278	!--------------------------------------------------------------------------------------------------!
[2801]	279	! Description:
	280	! ------------
[4649]	281	!> General routine:
	282	!> Allocate the MPI windows
	283	!--------------------------------------------------------------------------------------------------!
[2801]	284	SUBROUTINE pmcp_g_alloc_win
[4649]	285
[2801]	286	IMPLICIT NONE
	287
[4649]	288	INTEGER(iwp) :: child_id !< Id of a child model
	289	INTEGER(iwp) :: ierr !< error code
	290	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
	291	INTEGER(iwp) :: ipr !< right boundary in coarse(parent) index space
	292	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
	293	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
	294	INTEGER(iwp) :: m !< loop index
	295	INTEGER(iwp) :: nr_childs !< Number of child models of the current model
	296
	297	INTEGER :: parsize !<
	298
	299	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	300
	301	TYPE(C_PTR), SAVE :: ptr !<
	302
	303	TYPE(particle_type),DIMENSION(:),POINTER :: win_buffer !<
	304
	305
[2967]	306	#if defined( __parallel )
[4649]	307	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
	308	INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !<
[2967]	309
[2801]	310	!
	311	!-- If the model has a parent model prepare the structures for transfer
[4649]	312	IF ( cpl_id > 1 ) THEN
[2809]	313
[4649]	314	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle) / 8
[2809]	315
[2884]	316	CALL MPI_ALLOC_MEM( parsize_mpi_address_kind , MPI_INFO_NULL, ptr, ierr )
	317	parsize = parsize_mpi_address_kind
[2801]	318	buf_shape(1) = 1
	319	CALL C_F_POINTER( ptr, win_buffer, buf_shape )
[4649]	320	CALL MPI_WIN_CREATE( win_buffer, parsize_mpi_address_kind, parsize, MPI_INFO_NULL, &
	321	me%intra_comm, particle_win_child, ierr )
[2801]	322
	323	!
	324	!-- Child domain boundaries in the parent index space
[3948]	325	ipl = parent_bound(1)
	326	ipr = parent_bound(2)
	327	jps = parent_bound(3)
	328	jpn = parent_bound(4)
[2801]	329
[3948]	330	ALLOCATE( coarse_particles(jps:jpn,ipl:ipr) )
[2801]	331
	332	coarse_particles(:,:)%nr_particle = 0
	333	ENDIF
	334
	335	!
	336	!-- If the model has child models prepare the structures for transfer
[3883]	337	nr_childs = get_number_of_children()
[2801]	338	IF ( nr_childs > 0 ) THEN
	339	ALLOCATE( particle_win_parent(nr_childs) )
	340	ALLOCATE( buf_ptr(nr_childs) )
	341	DO m = 1, nr_childs
	342	child_id = get_childid(m)
[4649]	343	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle) / 8
[2884]	344	parsize = parsize_mpi_address_kind
[2809]	345
[2884]	346	winsize = max_nr_particle_in_rma_win * parsize_mpi_address_kind
[2801]	347	CALL MPI_ALLOC_MEM( winsize , MPI_INFO_NULL, buf_ptr(m), ierr )
	348	buf_shape(1) = max_nr_particle_in_rma_win
	349	CALL C_F_POINTER( buf_ptr(m), win_buffer, buf_shape )
[4649]	350	CALL MPI_WIN_CREATE( win_buffer, winsize, parsize, MPI_INFO_NULL, &
	351	children(child_id)%intra_comm, particle_win_parent(m), ierr )
[2801]	352	ENDDO
	353	ENDIF
	354
[2967]	355	#endif
[2801]	356	END SUBROUTINE pmcp_g_alloc_win
[2967]	357
	358
[4649]	359	!--------------------------------------------------------------------------------------------------!
[2801]	360	! Description:
	361	! ------------
[4649]	362	!> Child routine:
	363	!> Read/get particles out of the parent MPI window
	364	!--------------------------------------------------------------------------------------------------!
[2801]	365	SUBROUTINE pmcp_c_get_particle_from_parent
[4649]	366
[2801]	367	IMPLICIT NONE
	368
[4649]	369	INTEGER(iwp) :: i !< x grid index
	370	INTEGER(iwp) :: ierr !< error code
	371	INTEGER(iwp) :: ij !< combined xy index for the buffer array
	372	INTEGER(iwp) :: ip !< loop index (child PEs)
	373	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
	374	INTEGER(iwp) :: j !< y grid index
	375	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
	376	INTEGER(iwp) :: nr !< number of particles to receive from a parent box
	377
[2884]	378	INTEGER :: parsize !<
[2967]	379
	380	#if defined( __parallel )
[4649]	381	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
[2967]	382
[4649]	383	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
	384	INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp !<
[2801]	385
	386	IF ( cpl_id > 1 ) THEN
[4649]	387
[2801]	388	CALL pmc_c_getbuffer( particle_transfer = .TRUE. ) !Get number of particle/column and offset in RMA window xx
	389
	390	!
	391	!-- Wait for buffer to fill.
	392	!
[4649]	393	!-- The parent side (in pmc_s_fillbuffer) is filling the buffer in the MPI RMA window. When the
	394	!-- filling is complete, a MPI_BARRIER is called. The child is not allowd to access the
	395	!-- parent-buffer before it is completely filled. Synchronization is done implicitely in
	396	!-- pmc_c_getbuffer and pmc_s_fillbuffer on the parent side.
[2801]	397
[3948]	398	ipl = parent_bound(1)
	399	jps = parent_bound(3)
[2801]	400
	401	DO ip = 1, me%inter_npes
	402
	403	ape => me%pes(ip)
	404
	405	DO ij = 1, ape%nrele
[4649]	406	j = ape%locind(ij)%j + jps - 1
	407	i = ape%locind(ij)%i + ipl - 1
[2801]	408	nr = nr_partc(j,i)
	409	IF ( nr > 0 ) THEN
	410
	411	CALL check_and_alloc_coarse_particle (i, j, nr)
[4649]	412	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle) / 8
[2884]	413	parsize = parsize_mpi_address_kind
[2801]	414	target_disp = part_adrc(j,i) - 1
[4649]	415	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip - 1, 0, particle_win_child, ierr )
	416	CALL MPI_GET( coarse_particles(j,i)%parent_particles, nr * parsize, MPI_BYTE, &
	417	ip - 1, target_disp, nr * parsize, MPI_BYTE, particle_win_child, &
	418	ierr )
[2801]	419	CALL MPI_WIN_UNLOCK( ip - 1, particle_win_child, ierr )
	420	ENDIF
	421	coarse_particles(j,i)%nr_particle = nr
	422	ENDDO
	423	ENDDO
	424
	425	CALL c_copy_particle_to_child_grid
	426	ENDIF
	427
[2967]	428	#endif
[2801]	429	END SUBROUTINE pmcp_c_get_particle_from_parent
[2967]	430
	431
[4649]	432	!--------------------------------------------------------------------------------------------------!
[2801]	433	! Description:
	434	! ------------
[4649]	435	!> Child routine:
[2801]	436	!> Write/put particles into the parent MPI window
[4649]	437	!--------------------------------------------------------------------------------------------------!
	438	SUBROUTINE pmcp_c_send_particle_to_parent
	439
[2801]	440	IMPLICIT NONE
	441
[4649]	442	INTEGER(iwp) :: disp_offset !<
	443	INTEGER(iwp) :: i !< x loop index
	444	INTEGER(iwp) :: ierr !< error code
	445	INTEGER(iwp) :: ij !< combined xy index for the buffer array
	446	INTEGER(iwp) :: ip !< loop index (child PEs)
	447	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
	448	INTEGER(iwp) :: ipr !< right boundary in coarse(parent) index space
	449	INTEGER(iwp) :: j !< y loop index
	450	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
	451	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
	452	INTEGER(iwp) :: max_nr_particle_per_pe !< maximum number of particles per PE (depending on grid apect ratio)
	453	INTEGER(iwp) :: n !< shorter variable name for nr_fine_in_coarse
	454	INTEGER(iwp) :: nr !< shorter variabel name for nr_partc
	455	INTEGER(iwp) :: pe_offset !< offset index of the current PE
	456
	457	INTEGER :: parsize !<
	458
	459	REAL(wp) :: eps=0.00001 !< used in calculations to avoid rounding errors
	460	REAL(wp) :: xx !< number of fine grid cells inside a coarse grid cell in x-direction
	461	REAL(wp) :: yy !< number of fine grid cells inside a coarse grid cell in y-direction
	462
[2967]	463	! TYPE(particle_type) :: dummy_part !< dummy particle (needed for size calculations)
	464
	465	#if defined( __parallel )
[4649]	466	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
[2967]	467
[4649]	468	INTEGER(KIND=MPI_ADDRESS_KIND) :: parsize_mpi_address_kind !<
	469	INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp !<
	470
	471
[2801]	472	IF ( cpl_id > 1 ) THEN
	473	CALL c_copy_particle_to_coarse_grid
	474
	475	!
	476	!-- Child domain boundaries in the parent index space
	477
[3948]	478	ipl = parent_bound(1)
	479	ipr = parent_bound(2)
	480	jps = parent_bound(3)
	481	jpn = parent_bound(4)
[2801]	482
	483	nr_partc = 0
[4649]	484
[3948]	485	DO i = ipl, ipr
	486	DO j = jps, jpn
[2801]	487	nr_partc(j,i) = coarse_particles(j,i)%nr_particle
	488	ENDDO
	489	ENDDO
	490	part_adrc = 0
	491
	492	!
[4649]	493	!-- Compute number of fine grid cells in coarse grid (one direction)
[3883]	494	xx = ( pg%dx + eps ) / dx ! +eps to avoid rounding error
	495	yy = ( pg%dy + eps ) / dy
[4649]	496	nr_fine_in_coarse = MAX( INT( xx ), INT( yy ) )
[2801]	497
[4649]	498	IF ( MOD( coord_x(0), pg%dx ) /= 0.0 .OR. MOD( coord_y(0), pg%dy ) /= 0.0 ) THEN
[2801]	499	nr_fine_in_coarse = nr_fine_in_coarse + 1
	500	ENDIF
	501
	502	!
	503	!-- Assign a number to my child PE to select different areas in the RMA window on server side
	504	!-- With this number a square of child PEs is defined which share the same coarse grid cells
	505
[4649]	506	n = nr_fine_in_coarse ! Local variable n to make folloing statements shorter
[2801]	507	pe_offset = MOD( myidx, n ) * n + MOD( myidy, n)
	508	max_nr_particle_per_pe = max_nr_particle_in_rma_win / ( n * n )
	509	disp_offset = pe_offset * max_nr_particle_per_pe
[4649]	510	parsize_mpi_address_kind = STORAGE_SIZE(zero_particle) /8
[2884]	511	parsize = parsize_mpi_address_kind
[2801]	512	DO ip = 1, me%inter_npes
	513
	514	ape => me%pes(ip)
	515
	516	target_disp = disp_offset
[4649]	517	DO ij = 1, ape%nrele
[3948]	518	j = ape%locind(ij)%j + jps - 1
	519	i = ape%locind(ij)%i + ipl - 1
[2801]	520	nr = nr_partc(j,i)
[4649]	521	IF( nr > 0 ) THEN
	522	IF ( target_disp + nr - disp_offset >= max_nr_particle_per_pe ) THEN
	523	WRITE( 9, * ) 'RMA window too small on child ', &
	524	target_disp + nr - disp_offset, max_nr_particle_per_pe, &
	525	max_nr_particle_in_rma_win
[2801]	526	message_string = 'RMA window too small on child'
[3046]	527	CALL message( 'pmci_create_child_arrays', 'PA0480', 3, 2, 0, 6, 0 )
[2801]	528	ENDIF
[4649]	529	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip - 1, 0, particle_win_child, ierr )
	530	CALL MPI_PUT( coarse_particles(j,i)%parent_particles, nr * parsize, MPI_BYTE, &
	531	ip - 1, target_disp, nr * parsize, MPI_BYTE, particle_win_child, &
	532	ierr )
[2801]	533	CALL MPI_WIN_UNLOCK( ip - 1, particle_win_child, ierr )
	534	part_adrc(j,i) = target_disp + 1
	535	target_disp = target_disp + nr
	536	ENDIF
	537	ENDDO
	538	ENDDO
	539
	540	CALL pmc_c_putbuffer ( particle_transfer = .TRUE. ) !Send new number of particle/column and offset to parent
	541
	542	ENDIF
	543
[2967]	544	#endif
[2801]	545	END SUBROUTINE pmcp_c_send_particle_to_parent
[2967]	546
	547
[4649]	548	!--------------------------------------------------------------------------------------------------!
[2801]	549	! Description:
	550	! ------------
[4649]	551	!> Parent routine:
	552	!> Write particles into the MPI window
	553	!--------------------------------------------------------------------------------------------------!
[2801]	554	SUBROUTINE pmcp_p_fill_particle_win
[4649]	555
[2801]	556	IMPLICIT NONE
	557
[4649]	558	INTEGER(iwp) :: child_id !< id of the child model
	559	INTEGER(iwp) :: i !< x grid box index
	560	INTEGER(iwp) :: ij !< combined xy index for the buffer array
	561	INTEGER(iwp) :: ip !< loop index (child PEs)
	562	INTEGER(iwp) :: j !< y grid box index
	563	INTEGER(iwp) :: k !< z grid box index
	564	INTEGER(iwp) :: m !< loop index (number of childs)
	565	INTEGER(iwp) :: n !< loop index (number of particles)
	566	INTEGER(iwp) :: nr_part_col !< Number of particles to transfer per column
	567	INTEGER(iwp) :: number_of_particles !<
	568	INTEGER(iwp) :: pindex !<
	569	INTEGER(iwp) :: tot_particle_count !< Total number of particles per child
	570
	571	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	572
	573	LOGICAL :: active_particle !< Particles located in the fine/child grid area are marked as active (to be transferred)
	574	LOGICAL,SAVE :: lfirst = .TRUE. !<
	575
	576	REAL(wp) :: dx_child !< child grid spacing
	577	REAL(wp) :: dy_child !< child grid spacing
	578	REAL(wp) :: dz_child !< child grid spacing
	579	REAL(wp) :: ny_coord !< north coordinate of child grid
	580	REAL(wp) :: ny_coord_b !< north coordinate of child grid boundary
	581	REAL(wp) :: lx_coord !< left coordinate of child grid
	582	REAL(wp) :: lx_coord_b !< left coordinate of child grid boundary
	583	REAL(wp) :: rx_coord !< right coordinate of child grid
	584	REAL(wp) :: rx_coord_b !< right coordinate of child grid boundary
	585	REAL(wp) :: sy_coord !< south coordinate of child grid
	586	REAL(wp) :: sy_coord_b !< south coordinate of child grid boundary
	587	REAL(wp) :: uz_coord !< upper coordinate of child grid
	588	REAL(wp) :: uz_coord_b !< upper coordinate of child grid boundary
	589	REAL(wp) :: x !< particle position
	590	REAL(wp) :: y !< particle position
	591	REAL(wp) :: z !< particle position
	592
	593
[2967]	594	#if defined( __parallel )
[4649]	595	TYPE(pedef), POINTER :: ape !< TO_DO Klaus: give a description and better name of the variable
[2801]	596
[3883]	597	DO m = 1, get_number_of_children()
[2801]	598
	599	child_id = get_childid(m)
	600
[4649]	601	CALL get_child_edges( m, lx_coord, lx_coord_b, rx_coord, rx_coord_b, sy_coord, sy_coord_b, &
	602	ny_coord, ny_coord_b, uz_coord, uz_coord_b)
[2801]	603
	604	CALL get_child_gridspacing( m, dx_child, dy_child, dz_child )
	605
	606	IF ( lfirst ) THEN
[4649]	607	WRITE( 9, '(a,5f10.2)' ) 'edges ', lx_coord,rx_coord, sy_coord, ny_coord, &
	608	uz_coord
	609	WRITE( 9, '(a,5f10.2)' ) 'edges boundary ', lx_coord_b, rx_coord_b, sy_coord_b, &
	610	ny_coord_b, uz_coord_b
	611	WRITE( 9, '(a,5f10.2)' ) 'child spacing ', dx_child, dy_child, dz_child, &
	612	lower_left_coord_x,lower_left_coord_y
	613	ENDIF
[2801]	614	!
[4649]	615	!-- Reset values for every child
	616	tot_particle_count = 0
	617	nr_part = 0
[2801]	618	part_adr = 0
	619	pindex = 1
	620
	621	buf_shape(1) = max_nr_particle_in_rma_win
	622	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
	623
	624	DO ip = 1, children(child_id)%inter_npes
	625
	626	ape => children(child_id)%pes(ip)
	627
[4649]	628	nr_part_col = 0
	629
[2801]	630	DO ij = 1, ape%nrele
[4649]	631
[2801]	632	!
	633	!-- Inside the PMC adressing of 3d arrays starts with 1
	634	i = ape%locind(ij)%i + nxl - nbgp - 1
	635	j = ape%locind(ij)%j + nys - nbgp - 1
[3241]	636	nr_part_col = 0 ! Number of particles to transfer per column
[2801]	637	part_adr(j,i) = pindex
[4649]	638
[2801]	639	DO k = nzb + 1, nzt
	640	number_of_particles = prt_count(k,j,i)
[4649]	641
[2801]	642	IF ( number_of_particles <= 0 ) CYCLE
[4649]	643
[2801]	644	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	645
	646	! Select particles within boundary area
	647
[4649]	648	DO n = 1, number_of_particles
[2801]	649	x = particles(n)%x
	650	y = particles(n)%y
	651	z = particles(n)%z
	652	!
[4649]	653	!-- Check if the particle is located in the fine grid area
	654	active_particle = ( (x > lx_coord .AND. x < rx_coord) .AND. &
	655	(y > sy_coord .AND. y < ny_coord) .AND. &
	656	(z > 0.000000001 .AND. z < uz_coord) )
[2801]	657	IF ( active_particle .AND. particles(n)%particle_mask ) THEN
[4649]	658
[2801]	659	particle_in_win(pindex) = particles(n)
	660	!
	661	!-- Change particle positions and origin relative to global origin
	662	particle_in_win(pindex)%x = particle_in_win(pindex)%x + lower_left_coord_x
	663	particle_in_win(pindex)%y = particle_in_win(pindex)%y + lower_left_coord_y
[4649]	664	particle_in_win(pindex)%origin_x = particle_in_win(pindex)%origin_x &
	665	+ lower_left_coord_x
	666	particle_in_win(pindex)%origin_y = particle_in_win(pindex)%origin_y &
	667	+ lower_left_coord_y
[2801]	668
	669	tot_particle_count = tot_particle_count + 1
	670	nr_part_col = nr_part_col + 1
	671	pindex = pindex + 1
[4649]	672	IF ( pindex > max_nr_particle_in_rma_win ) THEN
	673	WRITE( 9, * ) 'RMA window too small on parent ', pindex, &
	674	max_nr_particle_in_rma_win
[2801]	675	message_string = 'RMA window too small on parent'
	676	CALL message( 'pmci_create_child_arrays', 'PA0481', 3, 2, 0, 6, 0 ) ! PA number has to be adjusted
	677	ENDIF
	678	END IF
	679	ENDDO
	680	ENDDO
	681	nr_part(j,i) = nr_part_col
	682	ENDDO
	683	ENDDO
	684
	685	CALL pmc_s_fillbuffer( child_id, particle_transfer = .TRUE. )
	686	ENDDO
	687
	688	lfirst = .FALSE.
	689
[2967]	690	#endif
[2801]	691	END SUBROUTINE pmcp_p_fill_particle_win
[2967]	692
[4649]	693
	694	!--------------------------------------------------------------------------------------------------!
[2801]	695	! Description:
	696	! ------------
[4649]	697	!> Parent routine:
	698	!> Delete particles from the MPI window
	699	!--------------------------------------------------------------------------------------------------!
[2801]	700	SUBROUTINE pmcp_p_empty_particle_win
[2967]	701
[2801]	702	IMPLICIT NONE
	703
[4649]	704	INTEGER(iwp) :: child_id !< model id of the child
	705	INTEGER(iwp) :: ip !< loop index (child PEs)
	706	INTEGER(iwp) :: m !< loop index (number of childs)
[2801]	707
[4649]	708	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
[2801]	709
[2967]	710	#if defined( __parallel )
[3883]	711	DO m = 1, get_number_of_children()
[2801]	712
	713	child_id = get_childid(m)
	714
	715	buf_shape(1) = max_nr_particle_in_rma_win
	716	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
	717
	718	!
[4649]	719	!-- In some cells of the coarse grid, there are contributions from more than one child process.
	720	!-- Therefore p_copy_particle_to_org_grid is done for one child process per call
	721	DO ip = 1, pmc_s_get_child_npes( child_id )
[2801]	722
	723	nr_part = 0
	724	part_adr = 0
	725
[4649]	726	CALL pmc_s_getdata_from_buffer( child_id, particle_transfer = .TRUE., &
[3241]	727	child_process_nr = ip )
	728	CALL p_copy_particle_to_org_grid( m )
[2801]	729	ENDDO
	730
	731	ENDDO
	732
[2967]	733	#endif
[2801]	734	END SUBROUTINE pmcp_p_empty_particle_win
[2967]	735
	736
[4649]	737	!--------------------------------------------------------------------------------------------------!
[2801]	738	! Description:
	739	! ------------
[4649]	740	!> Parent routine:
	741	!> After the transfer mark all parent particles that are still inside on of the child areas for
	742	!> deletion.
	743	!--------------------------------------------------------------------------------------------------!
[2801]	744	SUBROUTINE pmcp_p_delete_particles_in_fine_grid_area
	745
	746	IMPLICIT NONE
	747
[4649]	748	INTEGER(iwp) :: i !< loop index (x grid)
	749	INTEGER(iwp) :: j !< loop index (y grid)
	750	INTEGER(iwp) :: k !< loop index (z grid)
	751	INTEGER(iwp) :: m !< loop index (number of particles)
	752	INTEGER(iwp) :: n !< loop index (number of childs)
	753
	754	LOGICAL :: to_delete !< particles outside of model domain are marked as to_delete
	755
	756	REAL(wp) :: dx_child !< child grid spacing
	757	REAL(wp) :: dy_child !< child grid spacing
	758	REAL(wp) :: dz_child !< child grid spacing
	759	REAL(wp) :: ny_coord !< north coordinate of child grid
	760	REAL(wp) :: ny_coord_b !< north coordinate of child grid boundary
	761	REAL(wp) :: lx_coord !< left coordinate of child grid
	762	REAL(wp) :: lx_coord_b !< left coordinate of child grid boundary
	763	REAL(wp) :: rx_coord !< right coordinate of child grid
	764	REAL(wp) :: rx_coord_b !< right coordinate of child grid boundary
	765	REAL(wp) :: sy_coord !< south coordinate of child grid
	766	REAL(wp) :: sy_coord_b !< south coordinate of child grid boundary
	767	REAL(wp) :: uz_coord !< upper coordinate of child grid
	768	REAL(wp) :: uz_coord_b !< upper coordinate of child grid boundary
	769	REAL(wp) :: x !< particle position
	770	REAL(wp) :: y !< particle position
	771	REAL(wp) :: z !< particle position
	772
[2967]	773	#if defined( __parallel )
[3883]	774	DO m = 1, get_number_of_children()
[4649]	775	CALL get_child_edges( m, lx_coord, lx_coord_b, rx_coord, rx_coord_b, sy_coord, sy_coord_b, &
	776	ny_coord, ny_coord_b, uz_coord, uz_coord_b )
[2801]	777
	778
[4649]	779	CALL get_child_gridspacing( m, dx_child, dy_child, dz_child )
[2801]	780
[4649]	781	DO i = nxl, nxr
	782	DO j = nys, nyn
	783	DO k = nzb, nzt
[2801]	784	number_of_particles = prt_count(k,j,i)
	785
[4649]	786	IF ( number_of_particles == 0 ) CYCLE
[2801]	787
	788	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	789
[4649]	790	DO n = 1, number_of_particles
[2801]	791	x = particles(n)%x
	792	y = particles(n)%y
	793	z = particles(n)%z
	794
[4649]	795	to_delete = ( (x > lx_coord .AND. x < rx_coord) .AND. &
	796	(y > sy_coord .AND. y < ny_coord) .AND. &
	797	(z > 0.000000001 .AND. z < uz_coord) )
[2801]	798
[4649]	799	IF ( to_delete ) THEN
[2801]	800	particles(n)%particle_mask = .FALSE.
	801	ENDIF
	802	ENDDO
	803	ENDDO
	804	ENDDO
	805	ENDDO
	806
	807	ENDDO
	808
[2967]	809	#endif
[2801]	810	END SUBROUTINE pmcp_p_delete_particles_in_fine_grid_area
[2967]	811
	812
[4649]	813	!--------------------------------------------------------------------------------------------------!
[2801]	814	! Description:
	815	! ------------
[4649]	816	!> General routine:
	817	!> Print the total number of of the current model and its child models into a file
	818	!--------------------------------------------------------------------------------------------------!
	819	SUBROUTINE pmcp_g_print_number_of_particles( my_time, local_nr_particles )
	820
	821	USE pegrid, &
[2801]	822	ONLY: myid
[4649]	823
[2801]	824	IMPLICIT NONE
	825
[4649]	826	CHARACTER(LEN=16) :: fname !< filename
	827
	828	INTEGER(iwp) :: child_id !<
	829	INTEGER(iwp) :: child_nr_particles !< total number of particles in all child models
	830	INTEGER(iwp) :: ierr !< error code
	831	INTEGER(iwp) :: m !< loop index (number of childs
	832
	833	INTEGER(iwp),INTENT(IN) :: local_nr_particles !<
	834
	835	INTEGER(iwp),DIMENSION(2) :: ivalr !< integer value to be received
	836	INTEGER(iwp),DIMENSION(2) :: ivals !< integer value to be send
	837
	838	LOGICAL, SAVE :: is_file_open=.FALSE. !<
	839
	840	REAL(wp),INTENT(IN) :: my_time !<
	841
	842
[2967]	843	#if defined( __parallel )
[2801]	844	child_nr_particles = 0
	845	IF ( myid == 0 ) THEN
[4649]	846	IF ( cpl_id > 1 ) THEN
[2801]	847	ivals(1) = local_nr_particles
	848	CALL pmc_send_to_parent( ivals, 1, 0, 400, ierr )
	849	ENDIF
	850	DO m = 1, SIZE( pmc_parent_for_child ) - 1
	851
	852	child_id = pmc_parent_for_child(m)
	853	CALL pmc_recv_from_child( child_id, ivalr, 1, 0, 400, ierr )
	854	child_nr_particles = child_nr_particles + ivalr(1)
	855	ENDDO
	856
[4649]	857	IF ( SIZE( pmc_parent_for_child ) > 1 ) THEN
	858	IF ( .NOT. is_file_open ) THEN !kk muss noch auf file_open umgestellt werden
	859	WRITE( fname, '(a,i2.2)' ) 'nr_particles_', cpl_id
	860	OPEN ( 333, FILE = fname )
[2801]	861	is_file_open = .true.
	862	ENDIF
[4649]	863	WRITE( 333, '(f12.2,3i10)' ) my_time, local_nr_particles + child_nr_particles, &
	864	local_nr_particles, child_nr_particles
[2801]	865	ENDIF
	866	ENDIF
	867
[2967]	868	#endif
[2801]	869	END SUBROUTINE pmcp_g_print_number_of_particles
	870
[2967]	871
[4649]	872	!--------------------------------------------------------------------------------------------------!
	873	!--------------------------------------------------------------------------------------------------!
[2801]	874	! Private subroutines
[4649]	875	!--------------------------------------------------------------------------------------------------!
	876	!--------------------------------------------------------------------------------------------------!
[2801]	877
[4649]	878	!--------------------------------------------------------------------------------------------------!
[2801]	879	! Description:
	880	! ------------
[4649]	881	!> Child routine
	882	!> Update the size of the local buffer (coarse_particles)
	883	!--------------------------------------------------------------------------------------------------!
	884	SUBROUTINE check_and_alloc_coarse_particle( ic, jc, nr, with_copy )
	885
[2801]	886	IMPLICIT NONE
	887
[4649]	888	INTEGER(iwp),INTENT(IN) :: ic !< coarse x grid index
	889	INTEGER(iwp),INTENT(IN) :: jc !< coarse y grid index
	890	INTEGER(iwp),INTENT(IN) :: nr !< number of particles to be transferred/stored in local buffer
[2801]	891
[4649]	892	INTEGER(iwp) :: new_size !< new size of the local buffer
	893	INTEGER(iwp) :: old_size !< old size of the local buffer
	894
	895	LOGICAL :: with_copy_lo !< local variable of with copy
	896
	897	LOGICAL,INTENT(IN),OPTIONAL :: with_copy !< copy particles in buffer? or reallocate empty buffer
	898
	899	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: tmp_particles_d !<
	900
[2967]	901	#if defined( __parallel )
[2801]	902	with_copy_lo = .FALSE.
[4649]	903	IF ( PRESENT( with_copy ) ) with_copy_lo = with_copy
[2801]	904
[4649]	905	IF ( .NOT. ALLOCATED( coarse_particles(jc,ic)%parent_particles ) ) THEN
	906	new_size = MAX( nr, min_particles_per_column )
[2801]	907	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
[4649]	908	ELSEIF ( nr > SIZE( coarse_particles(jc,ic)%parent_particles ) ) THEN
[2801]	909
	910	old_size = SIZE( coarse_particles(jc,ic)%parent_particles )
	911	new_size = old_size * ( 1.0_wp + alloc_factor / 100.0_wp )
[4649]	912	new_size = MAX( nr, new_size, old_size + min_particles_per_column )
[2801]	913
	914	!
	915	!-- Copy existing particles to new particle buffer
[4649]	916	IF ( with_copy_lo ) THEN
[2801]	917	ALLOCATE( tmp_particles_d(old_size) )
	918	tmp_particles_d(1:old_size) = coarse_particles(jc,ic)%parent_particles
	919
	920	DEALLOCATE( coarse_particles(jc,ic)%parent_particles )
	921	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
	922
	923	coarse_particles(jc,ic)%parent_particles(1:old_size) = tmp_particles_d(1:old_size)
	924	coarse_particles(jc,ic)%parent_particles(old_size+1:new_size) = zero_particle
	925
	926	DEALLOCATE( tmp_particles_d )
	927	!
	928	!-- allocate or reallocate an empty buffer
[4649]	929	ELSE
[2801]	930	DEALLOCATE( coarse_particles(jc,ic)%parent_particles )
	931	ALLOCATE( coarse_particles(jc,ic)%parent_particles(new_size) )
	932	ENDIF
	933	ENDIF
	934
[2967]	935	#endif
[2801]	936	END SUBROUTINE check_and_alloc_coarse_particle
	937
[2967]	938
[4649]	939	!--------------------------------------------------------------------------------------------------!
[2801]	940	! Description:
	941	! ------------
[4649]	942	!> Child routine:
	943	!> Copy/sort particles out of the local buffer into the respective grid boxes
	944	!--------------------------------------------------------------------------------------------------!
[2801]	945	SUBROUTINE c_copy_particle_to_child_grid
[4649]	946
[2801]	947	IMPLICIT NONE
	948
[4649]	949	INTEGER(iwp) :: ic !< coarse x grid index
	950	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
	951	INTEGER(iwp) :: ipr !< right boundary in coarse(parent) index space
	952	INTEGER(iwp) :: ip !< x grid index
	953	INTEGER(iwp) :: jc !< coarse y grid index
	954	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
	955	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
	956	INTEGER(iwp) :: jp !< y grid index
	957	INTEGER(iwp) :: kp !< z grid index
	958	INTEGER(iwp) :: n !< loop index (number of particles)
	959	INTEGER(iwp) :: nr !< short variable for name number or particles
	960
	961	REAL(wp) :: xc !< child x coordinate
	962	REAL(wp) :: xoc !< child x origin
	963	REAL(wp) :: yc !< child y coordinate
	964	REAL(wp) :: yoc !< child y origin
	965	REAL(wp) :: zc !< child z coordinate
	966
[2967]	967	#if defined( __parallel )
[2801]	968	!
	969	!-- Child domain boundaries in the parent index space
[3948]	970	ipl = parent_bound(1)
	971	ipr = parent_bound(2)
	972	jps = parent_bound(3)
	973	jpn = parent_bound(4)
[2801]	974
[4649]	975	DO ic = ipl, ipr
	976	DO jc = jps, jpn
[2801]	977	nr = coarse_particles(jc,ic)%nr_particle
	978
[4649]	979	IF ( nr > 0 ) THEN
	980	DO n = 1, nr
[2801]	981	xc = coarse_particles(jc,ic)%parent_particles(n)%x-lower_left_coord_x
	982	yc = coarse_particles(jc,ic)%parent_particles(n)%y-lower_left_coord_y
	983	zc = coarse_particles(jc,ic)%parent_particles(n)%z
	984	xoc = coarse_particles(jc,ic)%parent_particles(n)%origin_x-lower_left_coord_x
	985	yoc = coarse_particles(jc,ic)%parent_particles(n)%origin_y-lower_left_coord_y
	986	ip = xc / dx
	987	jp = yc / dy
	988	kp = nzt
[4649]	989	DO WHILE ( zw(kp-1) > zc .AND. kp > nzb + 1 ) ! kk search loop has to be optimzed !!!
[2801]	990	kp = kp - 1
[4649]	991	ENDDO
[2801]	992
[4649]	993	IF ( ip >= nxl .AND. ip <= nxr .AND. jp >= nys .AND. jp <= nyn ) THEN
[2801]	994	prt_count(kp,jp,ip) = prt_count(kp,jp,ip) + 1
[4649]	995	IF ( prt_count(kp,jp,ip) > SIZE( grid_particles(kp,jp,ip)%particles ) ) THEN
[4017]	996	CALL pmc_realloc_particles_array( ip, jp, kp )
[2801]	997	ENDIF
[4649]	998	coarse_particles(jc,ic)%parent_particles(n)%x = xc ! Adjust coordinates to child grid
[3241]	999	coarse_particles(jc,ic)%parent_particles(n)%y = yc
[4649]	1000	coarse_particles(jc,ic)%parent_particles(n)%origin_x = xoc ! Adjust origins to child grid
[2801]	1001	coarse_particles(jc,ic)%parent_particles(n)%origin_y = yoc
[4649]	1002	grid_particles(kp,jp,ip)%particles(prt_count(kp,jp,ip)) &
	1003	= coarse_particles(jc,ic)%parent_particles(n)
[2801]	1004	ENDIF
	1005	ENDDO
	1006	ENDIF
	1007	ENDDO
	1008	ENDDO
	1009
[2967]	1010	#endif
[2801]	1011	END SUBROUTINE c_copy_particle_to_child_grid
[2967]	1012
	1013
[4649]	1014	!--------------------------------------------------------------------------------------------------!
[2801]	1015	! Description:
	1016	! ------------
[4649]	1017	!> Child routine:
	1018	!> Copy particles which left the model area into the local buffer
	1019	!--------------------------------------------------------------------------------------------------!
[2801]	1020	SUBROUTINE c_copy_particle_to_coarse_grid
[4649]	1021
[2801]	1022	IMPLICIT NONE
	1023
[4649]	1024	INTEGER(iwp) :: i !< loop index (x grid)
	1025	INTEGER(iwp) :: ic !< loop index (coarse x grid)
	1026	INTEGER(iwp) :: ipl !< left boundary in coarse(parent) index space
	1027	INTEGER(iwp) :: ipr !< left boundary in coarse(parent) index space
	1028	INTEGER(iwp) :: ierr !< error code
	1029	INTEGER(iwp) :: j !< loop index (y grid)
	1030	INTEGER(iwp) :: jc !< loop index (coarse y grid)
	1031	INTEGER(iwp) :: jps !< south boundary in coarse(parent) index space
	1032	INTEGER(iwp) :: jpn !< north boundary in coarse(parent) index space
	1033	INTEGER(iwp) :: k !< loop index (z grid)
	1034	INTEGER(iwp) :: n !< loop index (number of particles)
	1035
	1036	LOGICAL :: boundary_particle !<
	1037
	1038	REAL(wp) :: x !< x coordinate
	1039	REAL(wp) :: xo !< x origin
	1040	REAL(wp) :: x_left !< absolute left boundary
	1041	REAL(wp) :: x_right !< absolute right boundary
	1042	REAL(wp) :: y !< left boundary in coarse(parent) index space
	1043	REAL(wp) :: yo !< y origin
	1044	REAL(wp) :: y_north !< absolute north boundary
	1045	REAL(wp) :: y_south !< absoulte south boundary
	1046	REAL(wp) :: z !< z coordinate
	1047
[2967]	1048	#if defined( __parallel )
[2801]	1049	!
	1050	!-- Child domain boundaries in the parent index space
	1051
[3948]	1052	ipl = parent_bound(1)
	1053	ipr = parent_bound(2)
	1054	jps = parent_bound(3)
	1055	jpn = parent_bound(4)
[2801]	1056
	1057	!
[4649]	1058	!-- Absolute coordinates
[2801]	1059	x_left = coord_x(0)
	1060	x_right = coord_x(nx) + dx
	1061	y_south = coord_y(0)
	1062	y_north = coord_y(ny) + dy
[4649]	1063	!
	1064	!-- Clear Particle Buffer
	1065	DO ic = ipl, ipr
	1066	DO jc = jps, jpn
[2801]	1067	coarse_particles(jc,ic)%nr_particle = 0
	1068	ENDDO
	1069	ENDDO
	1070
	1071	!
[4649]	1072	!-- Determine particles which leave the inner area in east or west dirextion.
[2801]	1073	!-- Compute only first (nxl) and last (nxr) loop iterration.
	1074	DO i = nxl, nxr
	1075	DO j = nys, nyn
	1076	DO k = nzb + 1, nzt
	1077	number_of_particles = prt_count(k,j,i)
	1078	IF ( number_of_particles <= 0 ) CYCLE
	1079	particles => grid_particles(k,j,i)%particles(1:number_of_particles)
	1080	DO n = 1, number_of_particles
	1081	IF ( particles(n)%particle_mask ) THEN
[4649]	1082	x = particles(n)%x+ lower_left_coord_x
	1083	y = particles(n)%y+ lower_left_coord_y
[2801]	1084	xo = particles(n)%origin_x + lower_left_coord_x
	1085	yo = particles(n)%origin_y + lower_left_coord_y
[4649]	1086	z = particles(n)%z
	1087
[2801]	1088	boundary_particle = .FALSE.
[4649]	1089	boundary_particle = boundary_particle .OR. ( x < x_left .OR. x > x_right )
	1090	boundary_particle = boundary_particle .OR. ( y < y_south .OR. y > y_north )
	1091	boundary_particle = boundary_particle .OR. ( z > zw(nzt) )
[2801]	1092
[4649]	1093	IF ( boundary_particle ) THEN
[3883]	1094	ic = x / pg%dx !TODO anpassen auf Mehrfachnesting
	1095	jc = y / pg%dy
[2801]	1096
[4649]	1097	IF ( ic >= ipl .AND. ic <= ipr .AND. jc >= jps .AND. jc <= jpn ) THEN
	1098	coarse_particles(jc,ic)%nr_particle = coarse_particles(jc,ic)%nr_particle &
	1099	+ 1
	1100	CALL check_and_alloc_coarse_particle( ic, jc, &
	1101	coarse_particles(jc,ic)%nr_particle,&
	1102	with_copy = .TRUE. )
[2801]	1103
[4649]	1104	coarse_particles(jc,ic)%parent_particles( &
	1105	coarse_particles(jc,ic)%nr_particle) = particles(n)
	1106	coarse_particles(jc,ic)%parent_particles( &
	1107	coarse_particles(jc,ic)%nr_particle)%x = x !Adapt to global coordinates
	1108	coarse_particles(jc,ic)%parent_particles( &
	1109	coarse_particles(jc,ic)%nr_particle)%y = y
	1110	coarse_particles(jc,ic)%parent_particles( &
	1111	coarse_particles(jc,ic)%nr_particle)%origin_x = xo
	1112	coarse_particles(jc,ic)%parent_particles( &
	1113	coarse_particles(jc,ic)%nr_particle)%origin_y = yo
	1114	!
[2801]	1115	!-- Mark particle as deleted after copying it to the transfer buffer
	1116	grid_particles(k,j,i)%particles(n)%particle_mask = .FALSE.
	1117	ELSE
[4649]	1118	WRITE( 9, '(a,10i6)' ) 'This should not happen ', i, j, k, ic, jc, ipl, &
	1119	ipr, jps, jpn
[2801]	1120	CALL MPI_Abort( MPI_COMM_WORLD, 9999, ierr )
	1121	ENDIF
	1122	ENDIF
	1123	ENDIF
	1124	ENDDO
	1125	ENDDO
	1126	ENDDO
	1127	ENDDO
	1128
	1129	!
[4649]	1130	!-- Pack particles (eliminate those marked for deletion), determine new number of particles
[4017]	1131	! CALL lpm_sort_in_subboxes
[2801]	1132
[2967]	1133	#endif
[2801]	1134	END SUBROUTINE c_copy_particle_to_coarse_grid
[2967]	1135
	1136
[4649]	1137	!--------------------------------------------------------------------------------------------------!
[2801]	1138	! Description:
	1139	! ------------
[4649]	1140	!> Parent routine:
	1141	!> Copy/sort particles from the MPI window into the respective grid boxes
	1142	!--------------------------------------------------------------------------------------------------!
[3241]	1143	SUBROUTINE p_copy_particle_to_org_grid( m )
[2801]	1144
	1145	IMPLICIT NONE
	1146
[4649]	1147	INTEGER(iwp) :: i !< loop index (x grid)
	1148	INTEGER(iwp) :: j !< loop index (y grid)
	1149	INTEGER(iwp) :: k !< loop index (z grid)
	1150	INTEGER(iwp) :: n !< loop index (nr part)
	1151	INTEGER(iwp) :: nr !< short variable name for nr_part
	1152	INTEGER(iwp) :: pindex !< short variable name part_adr
[2801]	1153
[4649]	1154	INTEGER(iwp),INTENT(IN) :: m !<
[2801]	1155
[4649]	1156	INTEGER(iwp),DIMENSION(1) :: buf_shape !<
	1157
	1158	REAL(wp) :: x !< x coordinate
	1159	REAL(wp) :: xo !< x origin
	1160	REAL(wp) :: y !< y coordinate
	1161	REAL(wp) :: yo !< y origin
	1162	REAL(wp) :: z !< z coordinate
	1163
	1164
[2967]	1165	#if defined( __parallel )
[2801]	1166	buf_shape(1) = max_nr_particle_in_rma_win
	1167	CALL C_F_POINTER( buf_ptr(m), particle_in_win , buf_shape )
	1168
[4649]	1169	DO i = nxl, nxr
	1170	DO j = nys, nyn
[2801]	1171	nr = nr_part(j,i)
[4649]	1172	IF ( nr > 0 ) THEN
[2801]	1173	pindex = part_adr(j,i)
[4649]	1174	DO n = 1, nr
[2801]	1175	x = particle_in_win(pindex)%x-lower_left_coord_x
	1176	y = particle_in_win(pindex)%y-lower_left_coord_y
	1177	z = particle_in_win(pindex)%z
	1178	xo = particle_in_win(pindex)%origin_x-lower_left_coord_x
	1179	yo = particle_in_win(pindex)%origin_y-lower_left_coord_y
	1180	k = nzt + 1
[4649]	1181	DO WHILE ( zw(k-1) > z .AND. k > nzb + 1 ) ! kk search loop has to be optimzed !!!
[2801]	1182	k = k - 1
	1183	END DO
	1184
	1185	prt_count(k,j,i) = prt_count(k,j,i) + 1
[4649]	1186	IF ( prt_count(k,j,i) > SIZE( grid_particles(k,j,i)%particles ) ) THEN
[4017]	1187	CALL pmc_realloc_particles_array( i, j, k )
[2801]	1188	ENDIF
	1189	grid_particles(k,j,i)%particles(prt_count(k,j,i)) = particle_in_win(pindex)
[4649]	1190
[2801]	1191	!
	1192	!-- Update particle positions and origins relative to parent domain
	1193	grid_particles(k,j,i)%particles(prt_count(k,j,i))%x = x
	1194	grid_particles(k,j,i)%particles(prt_count(k,j,i))%y = y
	1195	grid_particles(k,j,i)%particles(prt_count(k,j,i))%origin_x = xo
	1196	grid_particles(k,j,i)%particles(prt_count(k,j,i))%origin_y = yo
	1197	pindex = pindex + 1
	1198	ENDDO
	1199	ENDIF
	1200	ENDDO
	1201	ENDDO
[2967]	1202
	1203	#endif
[2801]	1204	END SUBROUTINE p_copy_particle_to_org_grid
[4649]	1205
	1206	!--------------------------------------------------------------------------------------------------!
[4017]	1207	! Description:
	1208	! ------------
[4649]	1209	!> If the allocated memory for the particle array do not suffice to add arriving particles from
	1210	!> neighbour grid cells, this subrouting reallocates the particle array to assure enough memory is
	1211	!> available.
	1212	!--------------------------------------------------------------------------------------------------!
	1213	SUBROUTINE pmc_realloc_particles_array( i, j, k, size_in )
[2801]	1214
	1215
[4649]	1216	INTEGER(iwp) :: new_size !<
	1217	INTEGER(iwp) :: old_size !<
[4017]	1218
[4649]	1219	INTEGER(iwp), INTENT(IN) :: i !<
	1220	INTEGER(iwp), INTENT(IN) :: j !<
	1221	INTEGER(iwp), INTENT(IN) :: k !<
[4017]	1222
[4649]	1223	INTEGER(iwp), INTENT(IN), OPTIONAL :: size_in !<
	1224
	1225
	1226	TYPE(particle_type), DIMENSION(:), ALLOCATABLE :: tmp_particles_d !<
	1227
	1228	TYPE(particle_type), DIMENSION(500) :: tmp_particles_s !<
	1229
	1230	old_size = SIZE( grid_particles(k,j,i)%particles )
	1231
	1232	IF ( PRESENT( size_in ) ) THEN
[4017]	1233	new_size = size_in
	1234	ELSE
	1235	new_size = old_size * ( 1.0_wp + alloc_factor / 100.0_wp )
	1236	ENDIF
	1237
[4043]	1238	new_size = MAX( new_size, 1, old_size + 1 )
[4017]	1239
	1240	IF ( old_size <= 500 ) THEN
	1241
	1242	tmp_particles_s(1:old_size) = grid_particles(k,j,i)%particles(1:old_size)
	1243
[4649]	1244	DEALLOCATE( grid_particles(k,j,i)%particles )
	1245	ALLOCATE( grid_particles(k,j,i)%particles(new_size) )
[4017]	1246
	1247	grid_particles(k,j,i)%particles(1:old_size) = tmp_particles_s(1:old_size)
	1248	grid_particles(k,j,i)%particles(old_size+1:new_size) = zero_particle
	1249
	1250	ELSE
	1251
[4649]	1252	ALLOCATE( tmp_particles_d(new_size) )
[4017]	1253	tmp_particles_d(1:old_size) = grid_particles(k,j,i)%particles
	1254
[4649]	1255	DEALLOCATE( grid_particles(k,j,i)%particles )
	1256	ALLOCATE( grid_particles(k,j,i)%particles(new_size) )
[4017]	1257
	1258	grid_particles(k,j,i)%particles(1:old_size) = tmp_particles_d(1:old_size)
	1259	grid_particles(k,j,i)%particles(old_size+1:new_size) = zero_particle
	1260
[4649]	1261	DEALLOCATE( tmp_particles_d )
[4017]	1262
	1263	ENDIF
	1264	particles => grid_particles(k,j,i)%particles(1:new_size)
	1265
	1266	RETURN
[4649]	1267
[4017]	1268	END SUBROUTINE pmc_realloc_particles_array
	1269
[4444]	1270	#endif
[2801]	1271	END MODULE pmc_particle_interface

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