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source: palm/trunk/SOURCE/pmc_child_mod.f90 @ 4630

Last change on this file since 4630 was 4629, checked in by raasch, 4 years ago
support for MPI Fortran77 interface (mpif.h) removed
Property svn:keywords set to `Id`
File size: 28.0 KB

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1	MODULE pmc_child
2
3	!------------------------------------------------------------------------------!
4	! This file is part of the PALM model system.
5	!
6	! PALM is free software: you can redistribute it and/or modify it under the
7	! terms of the GNU General Public License as published by the Free Software
8	! Foundation, either version 3 of the License, or (at your option) any later
9	! version.
10	!
11	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
12	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14	!
15	! You should have received a copy of the GNU General Public License along with
16	! PALM. If not, see <http://www.gnu.org/licenses/>.
17	!
18	! Copyright 1997-2020 Leibniz Universitaet Hannover
19	!------------------------------------------------------------------------------!
20	!
21	! Current revisions:
22	! ------------------
23	!
24	!
25	! Former revisions:
26	! -----------------
27	! $Id: pmc_child_mod.f90 4629 2020-07-29 09:37:56Z suehring $
28	! support for MPI Fortran77 interface (mpif.h) removed
29	!
30	! 4360 2020-01-07 11:25:50Z suehring
31	!
32	!
33	! 4182 2019-08-22 15:20:23Z scharf
34	! Corrected "Former revisions" section
35	!
36	! 3964 2019-05-09 09:48:32Z suehring
37	! Remove unused variable
38	!
39	! 3963 2019-05-08 20:09:11Z suehring
40	! Bugfixes in initial settings of child and parent communication patterns.
41	!
42	! 3945 2019-05-02 11:29:27Z raasch
43	!
44	! 3932 2019-04-24 17:31:34Z suehring
45	! typo removed
46	!
47	! 2019-02-25 15:31:42Z raasch
48	! statement added to avoid compiler warning
49	!
50	! 3655 2019-01-07 16:51:22Z knoop
51	! explicit kind settings
52	!
53	! 1762 2016-02-25 12:31:13Z hellstea
54	! Initial revision by K. Ketelsen
55	!
56	! Description:
57	! ------------
58	!> Child part of Palm Model Coupler
59	!------------------------------------------------------------------------------!
60
61	#if defined( __parallel )
62
63	USE, INTRINSIC :: iso_c_binding
64
65	USE MPI
66
67	USE kinds
68
69	USE pmc_general, &
70	ONLY: arraydef, childdef, da_desclen, da_namedef, da_namelen, pedef, &
71	pmc_da_name_err, pmc_g_setname, pmc_max_array, pmc_status_ok
72
73	USE pmc_handle_communicator, &
74	ONLY: m_model_comm, m_model_npes, m_model_rank, m_to_parent_comm
75
76	USE pmc_mpi_wrapper, &
77	ONLY: pmc_alloc_mem, pmc_bcast, pmc_inter_bcast, pmc_time
78
79	IMPLICIT NONE
80
81
82	PRIVATE
83	SAVE
84
85	TYPE(childdef), PUBLIC :: me !<
86
87	INTEGER(iwp) :: myindex = 0 !< counter and unique number for data arrays
88	INTEGER(iwp) :: next_array_in_list = 0 !<
89
90
91	INTERFACE pmc_childinit
92	MODULE PROCEDURE pmc_childinit
93	END INTERFACE pmc_childinit
94
95	INTERFACE pmc_c_clear_next_array_list
96	MODULE PROCEDURE pmc_c_clear_next_array_list
97	END INTERFACE pmc_c_clear_next_array_list
98
99	INTERFACE pmc_c_getbuffer
100	MODULE PROCEDURE pmc_c_getbuffer
101	END INTERFACE pmc_c_getbuffer
102
103	INTERFACE pmc_c_getnextarray
104	MODULE PROCEDURE pmc_c_getnextarray
105	END INTERFACE pmc_c_getnextarray
106
107	INTERFACE pmc_c_get_2d_index_list
108	MODULE PROCEDURE pmc_c_get_2d_index_list
109	END INTERFACE pmc_c_get_2d_index_list
110
111	INTERFACE pmc_c_putbuffer
112	MODULE PROCEDURE pmc_c_putbuffer
113	END INTERFACE pmc_c_putbuffer
114
115	INTERFACE pmc_c_setind_and_allocmem
116	MODULE PROCEDURE pmc_c_setind_and_allocmem
117	END INTERFACE pmc_c_setind_and_allocmem
118
119	INTERFACE pmc_c_set_dataarray
120	MODULE PROCEDURE pmc_c_set_dataarray_2d
121	MODULE PROCEDURE pmc_c_set_dataarray_3d
122	MODULE PROCEDURE pmc_c_set_dataarray_ip2d
123	END INTERFACE pmc_c_set_dataarray
124
125	INTERFACE pmc_set_dataarray_name
126	MODULE PROCEDURE pmc_set_dataarray_name
127	MODULE PROCEDURE pmc_set_dataarray_name_lastentry
128	END INTERFACE pmc_set_dataarray_name
129
130
131	PUBLIC pmc_childinit, pmc_c_clear_next_array_list, pmc_c_getbuffer, &
132	pmc_c_getnextarray, pmc_c_putbuffer, pmc_c_setind_and_allocmem, &
133	pmc_c_set_dataarray, pmc_set_dataarray_name, pmc_c_get_2d_index_list
134
135	CONTAINS
136
137
138
139	SUBROUTINE pmc_childinit
140
141	IMPLICIT NONE
142
143	INTEGER(iwp) :: i !<
144	INTEGER(iwp) :: istat !<
145
146	!
147	!-- Get / define the MPI environment
148	me%model_comm = m_model_comm
149	me%inter_comm = m_to_parent_comm
150
151	CALL MPI_COMM_RANK( me%model_comm, me%model_rank, istat )
152	CALL MPI_COMM_SIZE( me%model_comm, me%model_npes, istat )
153	CALL MPI_COMM_REMOTE_SIZE( me%inter_comm, me%inter_npes, istat )
154	!
155	!-- Intra-communicator is used for MPI_GET
156	CALL MPI_INTERCOMM_MERGE( me%inter_comm, .TRUE., me%intra_comm, istat )
157	CALL MPI_COMM_RANK( me%intra_comm, me%intra_rank, istat )
158
159	ALLOCATE( me%pes(me%inter_npes) )
160	!
161	!-- Allocate an array of type arraydef for all parent processes to store
162	!-- information of then transfer array
163	DO i = 1, me%inter_npes
164	ALLOCATE( me%pes(i)%array_list(pmc_max_array) )
165	ENDDO
166
167	END SUBROUTINE pmc_childinit
168
169
170
171	SUBROUTINE pmc_set_dataarray_name( parentarraydesc, parentarrayname, &
172	childarraydesc, childarrayname, istat )
173
174	IMPLICIT NONE
175
176	CHARACTER(LEN=*), INTENT(IN) :: parentarrayname !<
177	CHARACTER(LEN=*), INTENT(IN) :: parentarraydesc !<
178	CHARACTER(LEN=*), INTENT(IN) :: childarrayname !<
179	CHARACTER(LEN=*), INTENT(IN) :: childarraydesc !<
180
181	INTEGER(iwp), INTENT(OUT) :: istat !<
182	!
183	!-- Local variables
184	TYPE(da_namedef) :: myname !<
185
186	INTEGER(iwp) :: mype !<
187
188
189	istat = pmc_status_ok
190	!
191	!-- Check length of array names
192	IF ( LEN( TRIM( parentarrayname) ) > da_namelen .OR. &
193	LEN( TRIM( childarrayname) ) > da_namelen ) THEN
194	istat = pmc_da_name_err
195	ENDIF
196
197	IF ( m_model_rank == 0 ) THEN
198	myindex = myindex + 1
199	myname%couple_index = myindex
200	myname%parentdesc = TRIM( parentarraydesc )
201	myname%nameonparent = TRIM( parentarrayname )
202	myname%childdesc = TRIM( childarraydesc )
203	myname%nameonchild = TRIM( childarrayname )
204	ENDIF
205
206	!
207	!-- Broadcast to all child processes
208	!
209	!-- The complete description of an transfer names array is broadcasted
210
211	CALL pmc_bcast( myname%couple_index, 0, comm=m_model_comm )
212	CALL pmc_bcast( myname%parentdesc, 0, comm=m_model_comm )
213	CALL pmc_bcast( myname%nameonparent, 0, comm=m_model_comm )
214	CALL pmc_bcast( myname%childdesc, 0, comm=m_model_comm )
215	CALL pmc_bcast( myname%nameonchild, 0, comm=m_model_comm )
216	!
217	!-- Broadcast to all parent processes
218	!-- The complete description of an transfer array names is broadcasted als to all parent processe
219	! Only the root PE of the broadcasts to parent using intra communicator
220
221	IF ( m_model_rank == 0 ) THEN
222	mype = MPI_ROOT
223	ELSE
224	mype = MPI_PROC_NULL
225	ENDIF
226
227	CALL pmc_bcast( myname%couple_index, mype, comm=m_to_parent_comm )
228	CALL pmc_bcast( myname%parentdesc, mype, comm=m_to_parent_comm )
229	CALL pmc_bcast( myname%nameonparent, mype, comm=m_to_parent_comm )
230	CALL pmc_bcast( myname%childdesc, mype, comm=m_to_parent_comm )
231	CALL pmc_bcast( myname%nameonchild, mype, comm=m_to_parent_comm )
232
233	CALL pmc_g_setname( me, myname%couple_index, myname%nameonchild )
234
235	END SUBROUTINE pmc_set_dataarray_name
236
237
238
239	SUBROUTINE pmc_set_dataarray_name_lastentry( lastentry )
240
241	IMPLICIT NONE
242
243	LOGICAL, INTENT(IN), OPTIONAL :: lastentry !<
244	!
245	!-- Local variables
246	INTEGER :: idum !<
247	INTEGER :: mype !<
248	TYPE(dA_namedef) :: myname !<
249
250	myname%couple_index = -1
251
252	IF ( m_model_rank == 0 ) THEN
253	mype = MPI_ROOT
254	ELSE
255	mype = MPI_PROC_NULL
256	ENDIF
257
258	CALL pmc_bcast( myname%couple_index, mype, comm=m_to_parent_comm )
259
260	!
261	!-- Next statement is just to avoid compiler warnings about unused variables
262	IF ( PRESENT( lastentry ) ) idum = 1
263
264	END SUBROUTINE pmc_set_dataarray_name_lastentry
265
266
267
268	SUBROUTINE pmc_c_get_2d_index_list
269
270	IMPLICIT NONE
271
272	INTEGER(iwp) :: dummy !<
273	INTEGER(iwp) :: i, ierr, i2, j, nr !<
274	INTEGER(iwp) :: indwin !< MPI window object
275	INTEGER(iwp) :: indwin2 !< MPI window object
276
277	INTEGER(KIND=MPI_ADDRESS_KIND) :: win_size !< Size of MPI window 1 (in bytes)
278	INTEGER(KIND=MPI_ADDRESS_KIND) :: disp !< Displacement unit (Integer = 4, floating poit = 8
279	INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !< Size of MPI window 2 (in bytes)
280
281	INTEGER, DIMENSION(me%inter_npes*2) :: nrele !< Number of Elements of a
282	!< horizontal slice
283	INTEGER, DIMENSION(:), POINTER :: myind !<
284
285	TYPE(pedef), POINTER :: ape !> Pointer to pedef structure
286
287
288	win_size = STORAGE_SIZE( dummy )/8
289	CALL MPI_WIN_CREATE( dummy, win_size, iwp, MPI_INFO_NULL, me%intra_comm, &
290	indwin, ierr )
291	!
292	!-- Close window on child side and open on parent side
293	CALL MPI_WIN_FENCE( 0, indwin, ierr )
294
295	! Between the two MPI_WIN_FENCE calls, the parent can fill the RMA window
296
297	!-- Close window on parent side and open on child side
298
299	CALL MPI_WIN_FENCE( 0, indwin, ierr )
300
301	DO i = 1, me%inter_npes
302	disp = me%model_rank * 2
303	CALL MPI_GET( nrele((i-1)*2+1), 2, MPI_INTEGER, i-1, disp, 2, &
304	MPI_INTEGER, indwin, ierr )
305	ENDDO
306	!
307	!-- MPI_GET is non-blocking -> data in nrele is not available until MPI_FENCE is
308	!-- called
309	CALL MPI_WIN_FENCE( 0, indwin, ierr )
310	!
311	!-- Allocate memory for index array
312	winsize = 0
313	DO i = 1, me%inter_npes
314	ape => me%pes(i)
315	i2 = ( i-1 ) * 2 + 1
316	nr = nrele(i2+1)
317	IF ( nr > 0 ) THEN
318	ALLOCATE( ape%locind(nr) )
319	ELSE
320	NULLIFY( ape%locind )
321	ENDIF
322	winsize = MAX( INT( nr, MPI_ADDRESS_KIND ), winsize )
323	ENDDO
324
325	ALLOCATE( myind(2*winsize) )
326	winsize = 1
327	!
328	!-- Local buffer used in MPI_GET can but must not be inside the MPI Window.
329	!-- Here, we use a dummy for the MPI window because the parent processes do
330	!-- not access the RMA window via MPI_GET or MPI_PUT
331	CALL MPI_WIN_CREATE( dummy, winsize, iwp, MPI_INFO_NULL, me%intra_comm, &
332	indwin2, ierr )
333	!
334	!-- MPI_GET is non-blocking -> data in nrele is not available until MPI_FENCE is
335	!-- called
336
337	CALL MPI_WIN_FENCE( 0, indwin2, ierr )
338
339	! Between the two MPI_WIN_FENCE calls, the parent can fill the RMA window
340
341	CALL MPI_WIN_FENCE( 0, indwin2, ierr )
342
343	DO i = 1, me%inter_npes
344	ape => me%pes(i)
345	nr = nrele(i*2)
346	IF ( nr > 0 ) THEN
347	disp = nrele(2*(i-1)+1)
348	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , i-1, 0, indwin2, ierr )
349	CALL MPI_GET( myind, 2nr, MPI_INTEGER, i-1, disp, 2nr, &
350	MPI_INTEGER, indwin2, ierr )
351	CALL MPI_WIN_UNLOCK( i-1, indwin2, ierr )
352	DO j = 1, nr
353	ape%locind(j)%i = myind(2*j-1)
354	ape%locind(j)%j = myind(2*j)
355	ENDDO
356	ape%nrele = nr
357	ELSE
358	ape%nrele = -1
359	ENDIF
360	ENDDO
361	!
362	!-- Don't know why, but this barrier is necessary before we can free the windows
363	CALL MPI_BARRIER( me%intra_comm, ierr )
364
365	CALL MPI_WIN_FREE( indWin, ierr )
366	CALL MPI_WIN_FREE( indwin2, ierr )
367	DEALLOCATE( myind )
368
369	END SUBROUTINE pmc_c_get_2d_index_list
370
371
372
373	SUBROUTINE pmc_c_clear_next_array_list
374
375	IMPLICIT NONE
376
377	next_array_in_list = 0
378
379	END SUBROUTINE pmc_c_clear_next_array_list
380
381
382
383	LOGICAL FUNCTION pmc_c_getnextarray( myname )
384
385	!
386	!-- List handling is still required to get minimal interaction with
387	!-- pmc_interface
388	CHARACTER(LEN=*), INTENT(OUT) :: myname !<
389	!
390	!-- Local variables
391	TYPE(pedef), POINTER :: ape
392	TYPE(arraydef), POINTER :: ar
393
394
395	next_array_in_list = next_array_in_list + 1
396	!
397	!-- Array names are the same on all child PEs, so take first process to
398	!-- get the name
399	ape => me%pes(1)
400	!
401	!-- Check if all arrays have been processed
402	IF ( next_array_in_list > ape%nr_arrays ) THEN
403	pmc_c_getnextarray = .FALSE.
404	RETURN
405	ENDIF
406
407	ar => ape%array_list( next_array_in_list )
408
409	myname = ar%name
410	!
411	!-- Return true if annother array
412	!-- If all array have been processed, the RETURN statement a couple of lines above is active
413
414	pmc_c_getnextarray = .TRUE.
415
416	END FUNCTION pmc_c_getnextarray
417
418
419
420	SUBROUTINE pmc_c_set_dataarray_2d( array )
421
422	IMPLICIT NONE
423
424	REAL(wp), INTENT(IN) , DIMENSION(:,:), POINTER :: array !<
425
426	INTEGER(iwp) :: i !<
427	INTEGER(iwp) :: nrdims !<
428	INTEGER(iwp), DIMENSION(4) :: dims !<
429
430	TYPE(C_PTR) :: array_adr
431	TYPE(arraydef), POINTER :: ar
432	TYPE(pedef), POINTER :: ape
433
434
435	dims = 1
436	nrdims = 2
437	dims(1) = SIZE( array, 1 )
438	dims(2) = SIZE( array, 2 )
439
440	array_adr = C_LOC( array )
441
442	DO i = 1, me%inter_npes
443	ape => me%pes(i)
444	ar => ape%array_list(next_array_in_list)
445	ar%nrdims = nrdims
446	ar%dimkey = nrdims
447	ar%a_dim = dims
448	ar%data = array_adr
449	ENDDO
450
451	END SUBROUTINE pmc_c_set_dataarray_2d
452
453	SUBROUTINE pmc_c_set_dataarray_ip2d( array )
454
455	IMPLICIT NONE
456
457	INTEGER(idp), INTENT(IN) , DIMENSION(:,:), POINTER :: array !<
458
459	INTEGER(iwp) :: i !<
460	INTEGER(iwp) :: nrdims !<
461	INTEGER(iwp), DIMENSION(4) :: dims !<
462
463	TYPE(C_PTR) :: array_adr
464	TYPE(arraydef), POINTER :: ar
465	TYPE(pedef), POINTER :: ape
466
467	dims = 1
468	nrdims = 2
469	dims(1) = SIZE( array, 1 )
470	dims(2) = SIZE( array, 2 )
471
472	array_adr = C_LOC( array )
473
474	DO i = 1, me%inter_npes
475	ape => me%pes(i)
476	ar => ape%array_list(next_array_in_list)
477	ar%nrdims = nrdims
478	ar%dimkey = 22
479	ar%a_dim = dims
480	ar%data = array_adr
481	ENDDO
482
483	END SUBROUTINE pmc_c_set_dataarray_ip2d
484
485	SUBROUTINE pmc_c_set_dataarray_3d (array)
486
487	IMPLICIT NONE
488
489	REAL(wp), INTENT(IN), DIMENSION(:,:,:), POINTER :: array !<
490
491	INTEGER(iwp) :: i
492	INTEGER(iwp) :: nrdims
493	INTEGER(iwp), DIMENSION (4) :: dims
494
495	TYPE(C_PTR) :: array_adr
496	TYPE(pedef), POINTER :: ape
497	TYPE(arraydef), POINTER :: ar
498
499
500	dims = 1
501	nrdims = 3
502	dims(1) = SIZE( array, 1 )
503	dims(2) = SIZE( array, 2 )
504	dims(3) = SIZE( array, 3 )
505
506	array_adr = C_LOC( array )
507
508	DO i = 1, me%inter_npes
509	ape => me%pes(i)
510	ar => ape%array_list(next_array_in_list)
511	ar%nrdims = nrdims
512	ar%dimkey = nrdims
513	ar%a_dim = dims
514	ar%data = array_adr
515	ENDDO
516
517	END SUBROUTINE pmc_c_set_dataarray_3d
518
519
520
521	SUBROUTINE pmc_c_setind_and_allocmem
522
523	IMPLICIT NONE
524
525	!
526	!-- Naming convention for appendices: _pc -> parent to child transfer
527	!-- _cp -> child to parent transfer
528	!-- recv -> parent to child transfer
529	!-- send -> child to parent transfer
530	INTEGER(iwp) :: arlen !<
531	INTEGER(iwp) :: myindex !<
532	INTEGER(iwp) :: i !<
533	INTEGER(iwp) :: ierr !<
534	INTEGER(iwp) :: istat !<
535	INTEGER(iwp) :: j !<
536	INTEGER(iwp) :: lo_nr_arrays !<
537	INTEGER(iwp) :: rcount !<
538	INTEGER(iwp) :: tag !<
539	INTEGER(iwp) :: total_npes !<
540
541	INTEGER(iwp), PARAMETER :: noindex = -1 !<
542
543	INTEGER(idp) :: bufsize !< size of MPI data window
544	INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !<
545
546	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: myindex_s
547	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: myindex_r
548
549	REAL(wp), DIMENSION(:), POINTER, SAVE :: base_array_pc !< base array
550	REAL(wp), DIMENSION(:), POINTER, SAVE :: base_array_cp !< base array
551
552	TYPE(pedef), POINTER :: ape !<
553	TYPE(arraydef), POINTER :: ar !<
554	Type(C_PTR) :: base_ptr !<
555
556
557	CALL MPI_COMM_SIZE (me%intra_comm, total_npes, ierr)
558
559	lo_nr_arrays = me%pes(1)%nr_arrays
560
561	ALLOCATE(myindex_s(lo_nr_arrays,0:total_npes-1))
562	ALLOCATE(myindex_r(lo_nr_arrays,0:total_npes-1))
563
564	myindex_s = 0
565
566	!
567	!-- Receive indices from child
568	CALL MPI_ALLTOALL( myindex_s, lo_nr_arrays, MPI_INTEGER, &
569	myindex_r, lo_nr_arrays, MPI_INTEGER, &
570	me%intra_comm, ierr )
571
572	myindex = 0
573	bufsize = 8
574	!
575	!-- Parent to child direction.
576	!-- First stride: compute size and set index
577	DO i = 1, me%inter_npes
578	ape => me%pes(i)
579	DO j = 1, ape%nr_arrays
580	ar => ape%array_list(j)
581	ar%recvindex = myindex_r(j,i-1)
582	!
583	!-- Determine max, because child buffer is allocated only once
584	!-- All 2D and 3d arrays use the same buffer
585
586	IF ( ar%nrdims == 3 ) THEN
587	bufsize = MAX( bufsize, &
588	INT( ar%a_dim(1)ar%a_dim(2)ar%a_dim(3), &
589	MPI_ADDRESS_KIND ) )
590	ELSE
591	bufsize = MAX( bufsize, &
592	INT( ar%a_dim(1)*ar%a_dim(2), MPI_ADDRESS_KIND ) )
593	ENDIF
594	ENDDO
595	ENDDO
596
597	!
598	!-- Create RMA (one sided communication) data buffer.
599	!-- The buffer for MPI_GET can be PE local, i.e. it can but must not be part of
600	!-- the MPI RMA window
601	CALL pmc_alloc_mem( base_array_pc, bufsize, base_ptr )
602	me%totalbuffersize = bufsize*wp ! total buffer size in byte
603	!
604	!-- Second stride: set buffer pointer
605	DO i = 1, me%inter_npes
606	ape => me%pes(i)
607	DO j = 1, ape%nr_arrays
608	ar => ape%array_list(j)
609	ar%recvbuf = base_ptr
610	ENDDO
611	ENDDO
612	!
613	!-- Child to parent direction
614	myindex = 1
615	rcount = 0
616	bufsize = 8
617
618	myindex_s = 0
619	myindex_r = 0
620
621	DO i = 1, me%inter_npes
622	ape => me%pes(i)
623	tag = 300
624	DO j = 1, ape%nr_arrays
625	ar => ape%array_list(j)
626	IF ( ar%nrdims == 2 ) THEN
627	arlen = ape%nrele
628	ELSEIF( ar%nrdims == 3 ) THEN
629	arlen = ape%nrele*ar%a_dim(1)
630	ENDIF
631
632	IF ( ape%nrele > 0 ) THEN
633	ar%sendindex = myindex
634	ELSE
635	ar%sendindex = noindex
636	ENDIF
637
638	myindex_s(j,i-1) = ar%sendindex
639
640	IF ( ape%nrele > 0 ) THEN
641	ar%sendsize = arlen
642	myindex = myindex + arlen
643	bufsize = bufsize + arlen
644	ENDIF
645
646	ENDDO
647
648	ENDDO
649	!
650	!-- Send indices to parent
651
652	CALL MPI_ALLTOALL( myindex_s, lo_nr_arrays, MPI_INTEGER, &
653	myindex_r, lo_nr_arrays, MPI_INTEGER, &
654	me%intra_comm, ierr)
655
656	DEALLOCATE( myindex_s )
657	DEALLOCATE( myindex_r )
658
659	!
660	!-- Create RMA (one sided communication) window for data buffer child to parent
661	!-- transfer.
662	!-- The buffer of MPI_GET (counter part of transfer) can be PE-local, i.e. it
663	!-- can but must not be part of the MPI RMA window. Only one RMA window is
664	!-- required to prepare the data
665	!-- for parent -> child transfer on the parent side
666	!-- and
667	!-- for child -> parent transfer on the child side
668	CALL pmc_alloc_mem( base_array_cp, bufsize )
669	me%totalbuffersize = bufsize * wp ! total buffer size in byte
670
671	winSize = me%totalbuffersize
672
673	CALL MPI_WIN_CREATE( base_array_cp, winsize, wp, MPI_INFO_NULL, &
674	me%intra_comm, me%win_parent_child, ierr )
675	CALL MPI_WIN_FENCE( 0, me%win_parent_child, ierr )
676	CALL MPI_BARRIER( me%intra_comm, ierr )
677	!
678	!-- Second stride: set buffer pointer
679	DO i = 1, me%inter_npes
680	ape => me%pes(i)
681	DO j = 1, ape%nr_arrays
682	ar => ape%array_list(j)
683	IF ( ape%nrele > 0 ) THEN
684	ar%sendbuf = C_LOC( base_array_cp(ar%sendindex) )
685	!
686	!-- TODO: if this is an error to be really expected, replace the
687	!-- following message by a meaningful standard PALM message using
688	!-- the message-routine
689	IF ( ar%sendindex+ar%sendsize > bufsize ) THEN
690	WRITE( 0,'(a,i4,4i7,1x,a)') 'Child buffer too small ', i, &
691	ar%sendindex, ar%sendsize, ar%sendindex+ar%sendsize, &
692	bufsize, TRIM( ar%name )
693	CALL MPI_ABORT( MPI_COMM_WORLD, istat, ierr )
694	ENDIF
695	ENDIF
696	ENDDO
697	ENDDO
698
699	END SUBROUTINE pmc_c_setind_and_allocmem
700
701
702
703	SUBROUTINE pmc_c_getbuffer( waittime, particle_transfer )
704
705	IMPLICIT NONE
706
707	REAL(wp), INTENT(OUT), OPTIONAL :: waittime !<
708	LOGICAL, INTENT(IN), OPTIONAL :: particle_transfer !<
709
710	LOGICAL :: lo_ptrans!<
711
712	INTEGER(iwp) :: ierr !<
713	INTEGER(iwp) :: ij !<
714	INTEGER(iwp) :: ip !<
715	INTEGER(iwp) :: j !<
716	INTEGER(iwp) :: myindex !<
717	INTEGER(iwp) :: nr !< number of elements to get
718	!< from parent
719	INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp
720	INTEGER,DIMENSION(1) :: buf_shape
721
722	REAL(wp) :: t1
723	REAL(wp) :: t2
724
725	REAL(wp), POINTER, DIMENSION(:) :: buf
726	REAL(wp), POINTER, DIMENSION(:,:) :: data_2d
727	REAL(wp), POINTER, DIMENSION(:,:,:) :: data_3d
728	TYPE(pedef), POINTER :: ape
729	TYPE(arraydef), POINTER :: ar
730	INTEGER(idp), POINTER, DIMENSION(:) :: ibuf !<
731	INTEGER(idp), POINTER, DIMENSION(:,:) :: idata_2d !<
732
733	!
734	!-- Synchronization of the model is done in pmci_synchronize.
735	!-- Therefore the RMA window can be filled without
736	!-- sychronization at this point and a barrier is not necessary.
737
738	!-- In case waittime is present, the following barrier is necessary to
739	!-- insure the same number of barrier calls on parent and child
740	!-- This means, that here on child side two barriers are call successively
741	!-- The parent is filling its buffer between the two barrier calls
742
743	!-- Please note that waittime has to be set in pmc_s_fillbuffer AND
744	!-- pmc_c_getbuffer
745	IF ( PRESENT( waittime ) ) THEN
746	t1 = pmc_time()
747	CALL MPI_BARRIER( me%intra_comm, ierr )
748	t2 = pmc_time()
749	waittime = t2 - t1
750	ENDIF
751
752	lo_ptrans = .FALSE.
753	IF ( PRESENT( particle_transfer)) lo_ptrans = particle_transfer
754
755	!
756	!-- Wait for buffer is filled.
757	!
758	!-- The parent side (in pmc_s_fillbuffer) is filling the buffer in the MPI RMA window
759	!-- When the filling is complet, a MPI_BARRIER is called.
760	!-- The child is not allowd to access the parent-buffer before it is completely filled
761	!-- therefore the following barrier is required.
762
763	CALL MPI_BARRIER( me%intra_comm, ierr )
764
765	DO ip = 1, me%inter_npes
766	ape => me%pes(ip)
767	DO j = 1, ape%nr_arrays
768	ar => ape%array_list(j)
769
770	IF ( ar%dimkey == 2 .AND. .NOT.lo_ptrans) THEN
771	nr = ape%nrele
772	ELSEIF ( ar%dimkey == 3 .AND. .NOT.lo_ptrans) THEN
773	nr = ape%nrele * ar%a_dim(1)
774	ELSE IF ( ar%dimkey == 22 .AND. lo_ptrans) THEN
775	nr = ape%nrele
776	ELSE
777	CYCLE ! Particle array ar not transferd here
778	ENDIF
779	buf_shape(1) = nr
780	IF ( lo_ptrans ) THEN
781	CALL C_F_POINTER( ar%recvbuf, ibuf, buf_shape )
782	ELSE
783	CALL C_F_POINTER( ar%recvbuf, buf, buf_shape )
784	ENDIF
785	!
786	!-- MPI passive target RMA
787	!-- One data array is fetcht from MPI RMA window on parent
788
789	IF ( nr > 0 ) THEN
790	target_disp = ar%recvindex - 1
791	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip-1, 0, &
792	me%win_parent_child, ierr )
793	IF ( lo_ptrans ) THEN
794	CALL MPI_GET( ibuf, nr8, MPI_BYTE, ip-1, target_disp, nr8, MPI_BYTE, & !There is no MPI_INTEGER8 datatype
795	me%win_parent_child, ierr )
796	ELSE
797	CALL MPI_GET( buf, nr, MPI_REAL, ip-1, target_disp, nr, &
798	MPI_REAL, me%win_parent_child, ierr )
799	ENDIF
800	CALL MPI_WIN_UNLOCK( ip-1, me%win_parent_child, ierr )
801	ENDIF
802	myindex = 1
803	IF ( ar%dimkey == 2 .AND. .NOT.lo_ptrans) THEN
804
805	CALL C_F_POINTER( ar%data, data_2d, ar%a_dim(1:2) )
806	DO ij = 1, ape%nrele
807	data_2d(ape%locind(ij)%j,ape%locind(ij)%i) = buf(myindex)
808	myindex = myindex + 1
809	ENDDO
810
811	ELSEIF ( ar%dimkey == 3 .AND. .NOT.lo_ptrans) THEN
812
813	CALL C_F_POINTER( ar%data, data_3d, ar%a_dim(1:3) )
814	DO ij = 1, ape%nrele
815	data_3d(:,ape%locind(ij)%j,ape%locind(ij)%i) = &
816	buf(myindex:myindex+ar%a_dim(1)-1)
817	myindex = myindex+ar%a_dim(1)
818	ENDDO
819
820	ELSEIF ( ar%dimkey == 22 .AND. lo_ptrans) THEN
821	CALL C_F_POINTER( ar%data, idata_2d, ar%a_dim(1:2) )
822
823	DO ij = 1, ape%nrele
824	idata_2d(ape%locind(ij)%j,ape%locind(ij)%i) = ibuf(myindex)
825	myindex = myindex + 1
826	ENDDO
827
828	ENDIF
829	ENDDO
830	ENDDO
831
832	END SUBROUTINE pmc_c_getbuffer
833
834
835
836	SUBROUTINE pmc_c_putbuffer( waittime , particle_transfer )
837
838	IMPLICIT NONE
839
840	REAL(wp), INTENT(OUT), OPTIONAL :: waittime !<
841	LOGICAL, INTENT(IN), OPTIONAL :: particle_transfer !<
842
843	LOGICAL :: lo_ptrans!<
844
845	INTEGER(iwp) :: ierr !<
846	INTEGER(iwp) :: ij !<
847	INTEGER(iwp) :: ip !<
848	INTEGER(iwp) :: j !<
849	INTEGER(iwp) :: myindex !<
850
851	INTEGER(iwp), DIMENSION(1) :: buf_shape !<
852
853	REAL(wp) :: t1 !<
854	REAL(wp) :: t2 !<
855
856	REAL(wp), POINTER, DIMENSION(:) :: buf !<
857	REAL(wp), POINTER, DIMENSION(:,:) :: data_2d !<
858	REAL(wp), POINTER, DIMENSION(:,:,:) :: data_3d !<
859
860	INTEGER(idp), POINTER, DIMENSION(:) :: ibuf !<
861	INTEGER(idp), POINTER, DIMENSION(:,:) :: idata_2d !<
862
863	TYPE(pedef), POINTER :: ape !<
864	TYPE(arraydef), POINTER :: ar !<
865
866	!
867	!-- Wait for empty buffer
868	!-- Switch RMA epoche
869
870	t1 = pmc_time()
871	CALL MPI_BARRIER( me%intra_comm, ierr )
872	t2 = pmc_time()
873	IF ( PRESENT( waittime ) ) waittime = t2 - t1
874
875	lo_ptrans = .FALSE.
876	IF ( PRESENT( particle_transfer)) lo_ptrans = particle_transfer
877
878	DO ip = 1, me%inter_npes
879	ape => me%pes(ip)
880	DO j = 1, ape%nr_arrays
881	ar => aPE%array_list(j)
882	myindex = 1
883
884	IF ( ar%dimkey == 2 .AND. .NOT.lo_ptrans ) THEN
885
886	buf_shape(1) = ape%nrele
887	CALL C_F_POINTER( ar%sendbuf, buf, buf_shape )
888	CALL C_F_POINTER( ar%data, data_2d, ar%a_dim(1:2) )
889	DO ij = 1, ape%nrele
890	buf(myindex) = data_2d(ape%locind(ij)%j,ape%locind(ij)%i)
891	myindex = myindex + 1
892	ENDDO
893
894	ELSEIF ( ar%dimkey == 3 .AND. .NOT.lo_ptrans ) THEN
895
896	buf_shape(1) = ape%nrele*ar%a_dim(1)
897	CALL C_F_POINTER( ar%sendbuf, buf, buf_shape )
898	CALL C_F_POINTER( ar%data, data_3d, ar%a_dim(1:3) )
899	DO ij = 1, ape%nrele
900	buf(myindex:myindex+ar%a_dim(1)-1) = &
901	data_3d(:,ape%locind(ij)%j,ape%locind(ij)%i)
902	myindex = myindex + ar%a_dim(1)
903	ENDDO
904
905	ELSE IF ( ar%dimkey == 22 .AND. lo_ptrans) THEN
906
907	buf_shape(1) = ape%nrele
908	CALL C_F_POINTER( ar%sendbuf, ibuf, buf_shape )
909	CALL C_F_POINTER( ar%data, idata_2d, ar%a_dim(1:2) )
910
911	DO ij = 1, ape%nrele
912	ibuf(myindex) = idata_2d(ape%locind(ij)%j,ape%locind(ij)%i)
913	myindex = myindex + 1
914	ENDDO
915
916	ENDIF
917	ENDDO
918	ENDDO
919	!
920	!-- Buffer is filled
921	!-- Switch RMA epoche
922
923	CALL MPI_Barrier(me%intra_comm, ierr)
924
925	END SUBROUTINE pmc_c_putbuffer
926
927	#endif
928	END MODULE pmc_child

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