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source: palm/trunk/SOURCE/pmc_parent_mod.f90 @ 2699

Last change on this file since 2699 was 2696, checked in by kanani, 7 years ago
Merge of branch palm4u into trunk
Property svn:keywords set to `Id`
File size: 30.7 KB

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1	MODULE pmc_parent
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 1997-2017 Leibniz Universitaet Hannover
19	!------------------------------------------------------------------------------!
20	!
21	! Current revisions:
22	! ------------------
23	!
24	!
25	! Former revisions:
26	! -----------------
27	! $Id: pmc_parent_mod.f90 2696 2017-12-14 17:12:51Z kanani $
28	! Some cleanup and commenting improvements only.
29	!
30	! 2101 2017-01-05 16:42:31Z suehring
31	!
32	! 2000 2016-08-20 18:09:15Z knoop
33	! Forced header and separation lines into 80 columns
34	!
35	! 1938 2016-06-13 15:26:05Z hellstea
36	! Minor clean up.
37	!
38	! 1901 2016-05-04 15:39:38Z raasch
39	! Module renamed. Code clean up. The words server/client changed to parent/child.
40	!
41	! 1900 2016-05-04 15:27:53Z raasch
42	! re-formatted to match PALM style
43	!
44	! 1850 2016-04-08 13:29:27Z maronga
45	! Module renamed
46	!
47	!
48	! 1833 2016-04-07 14:23:03Z raasch
49	! gfortran requires pointer attributes for some array declarations,
50	! long line wrapped
51	!
52	! 1808 2016-04-05 19:44:00Z raasch
53	! MPI module used by default on all machines
54	!
55	! 1797 2016-03-21 16:50:28Z raasch
56	! introduction of different datatransfer modes
57	!
58	! 1791 2016-03-11 10:41:25Z raasch
59	! Debug write-statements commented out
60	!
61	! 1786 2016-03-08 05:49:27Z raasch
62	! change in child-parent data transfer: parent now gets data from child
63	! instead that child put's it to the parent
64	!
65	! 1779 2016-03-03 08:01:28Z raasch
66	! kind=dp replaced by wp,
67	! error messages removed or changed to PALM style, dim_order removed
68	! array management changed from linked list to sequential loop
69	!
70	! 1766 2016-02-29 08:37:15Z raasch
71	! modifications to allow for using PALM's pointer version
72	! +new routine pmc_s_set_active_data_array
73	!
74	! 1764 2016-02-28 12:45:19Z raasch
75	! cpp-statement added (nesting can only be used in parallel mode)
76	!
77	! 1762 2016-02-25 12:31:13Z hellstea
78	! Initial revision by K. Ketelsen
79	!
80	! Description:
81	! ------------
82	!
83	! Parent part of Palm Model Coupler
84	!-------------------------------------------------------------------------------!
85
86	#if defined( __parallel )
87	USE, INTRINSIC :: ISO_C_BINDING
88
89	#if defined( __mpifh )
90	INCLUDE "mpif.h"
91	#else
92	USE MPI
93	#endif
94	USE kinds
95	USE pmc_general, &
96	ONLY: arraydef, childdef, da_namedef, da_namelen, pedef, &
97	pmc_g_setname, pmc_max_array, pmc_max_models, pmc_sort
98
99	USE pmc_handle_communicator, &
100	ONLY: m_model_comm,m_model_rank,m_model_npes, m_to_child_comm, &
101	m_world_rank, pmc_parent_for_child
102
103	USE pmc_mpi_wrapper, &
104	ONLY: pmc_alloc_mem, pmc_bcast, pmc_time
105
106	IMPLICIT NONE
107
108	PRIVATE
109	SAVE
110
111	TYPE childindexdef
112	INTEGER :: nrpoints !<
113	INTEGER, DIMENSION(:,:), ALLOCATABLE :: index_list_2d !<
114	END TYPE childindexdef
115
116	TYPE(childdef), DIMENSION(pmc_max_models) :: children !<
117	TYPE(childindexdef), DIMENSION(pmc_max_models) :: indchildren !<
118
119	INTEGER :: next_array_in_list = 0 !<
120
121
122	PUBLIC pmc_parent_for_child
123
124
125	INTERFACE pmc_parentinit
126	MODULE PROCEDURE pmc_parentinit
127	END INTERFACE pmc_parentinit
128
129	INTERFACE pmc_s_set_2d_index_list
130	MODULE PROCEDURE pmc_s_set_2d_index_list
131	END INTERFACE pmc_s_set_2d_index_list
132
133	INTERFACE pmc_s_clear_next_array_list
134	MODULE PROCEDURE pmc_s_clear_next_array_list
135	END INTERFACE pmc_s_clear_next_array_list
136
137	INTERFACE pmc_s_getnextarray
138	MODULE PROCEDURE pmc_s_getnextarray
139	END INTERFACE pmc_s_getnextarray
140
141	INTERFACE pmc_s_set_dataarray
142	MODULE PROCEDURE pmc_s_set_dataarray_2d
143	MODULE PROCEDURE pmc_s_set_dataarray_3d
144	END INTERFACE pmc_s_set_dataarray
145
146	INTERFACE pmc_s_setind_and_allocmem
147	MODULE PROCEDURE pmc_s_setind_and_allocmem
148	END INTERFACE pmc_s_setind_and_allocmem
149
150	INTERFACE pmc_s_fillbuffer
151	MODULE PROCEDURE pmc_s_fillbuffer
152	END INTERFACE pmc_s_fillbuffer
153
154	INTERFACE pmc_s_getdata_from_buffer
155	MODULE PROCEDURE pmc_s_getdata_from_buffer
156	END INTERFACE pmc_s_getdata_from_buffer
157
158	INTERFACE pmc_s_set_active_data_array
159	MODULE PROCEDURE pmc_s_set_active_data_array
160	END INTERFACE pmc_s_set_active_data_array
161
162	PUBLIC pmc_parentinit, pmc_s_clear_next_array_list, pmc_s_fillbuffer, &
163	pmc_s_getdata_from_buffer, pmc_s_getnextarray, &
164	pmc_s_setind_and_allocmem, pmc_s_set_active_data_array, &
165	pmc_s_set_dataarray, pmc_s_set_2d_index_list
166
167	CONTAINS
168
169
170	SUBROUTINE pmc_parentinit
171
172	IMPLICIT NONE
173
174	INTEGER :: childid !<
175	INTEGER :: i !<
176	INTEGER :: j !<
177	INTEGER :: istat !<
178
179
180	DO i = 1, SIZE( pmc_parent_for_child )-1
181
182	childid = pmc_parent_for_child( i )
183
184	children(childid)%model_comm = m_model_comm
185	children(childid)%inter_comm = m_to_child_comm(childid)
186
187	!
188	!-- Get rank and size
189	CALL MPI_COMM_RANK( children(childid)%model_comm, &
190	children(childid)%model_rank, istat )
191	CALL MPI_COMM_SIZE( children(childid)%model_comm, &
192	children(childid)%model_npes, istat )
193	CALL MPI_COMM_REMOTE_SIZE( children(childid)%inter_comm, &
194	children(childid)%inter_npes, istat )
195
196	!
197	!-- Intra communicator is used for MPI_GET
198	CALL MPI_INTERCOMM_MERGE( children(childid)%inter_comm, .FALSE., &
199	children(childid)%intra_comm, istat )
200	CALL MPI_COMM_RANK( children(childid)%intra_comm, &
201	children(childid)%intra_rank, istat )
202
203	ALLOCATE( children(childid)%pes(children(childid)%inter_npes))
204
205	!
206	!-- Allocate array of TYPE arraydef for all child PEs to store information
207	!-- of the transfer array
208	DO j = 1, children(childid)%inter_npes
209	ALLOCATE( children(childid)%pes(j)%array_list(pmc_max_array) )
210	ENDDO
211
212	CALL get_da_names_from_child (childid)
213
214	ENDDO
215
216	END SUBROUTINE pmc_parentinit
217
218
219
220	SUBROUTINE pmc_s_set_2d_index_list( childid, index_list )
221
222	IMPLICIT NONE
223
224	INTEGER, INTENT(IN) :: childid !<
225	INTEGER, DIMENSION(:,:), INTENT(INOUT) :: index_list !<
226
227	INTEGER :: ian !<
228	INTEGER :: ic !<
229	INTEGER :: ie !<
230	INTEGER :: ip !<
231	INTEGER :: is !<
232	INTEGER :: istat !<
233	INTEGER :: n !<
234
235
236	IF ( m_model_rank == 0 ) THEN
237	!
238	!-- Sort to ascending parent process order
239	CALL pmc_sort( index_list, 6 )
240	is = 1
241	DO ip = 0, m_model_npes-1
242	!
243	!-- Split into parent processes
244	ie = is - 1
245	!
246	!-- There may be no entry for this process
247	IF ( is <= SIZE( index_list,2 ) .AND. ie >= 0 ) THEN
248	DO WHILE ( index_list(6,ie+1 ) == ip )
249	ie = ie + 1
250	IF ( ie == SIZE( index_list,2 ) ) EXIT
251	ENDDO
252	ian = ie - is + 1
253	ELSE
254	is = -1
255	ie = -2
256	ian = 0
257	ENDIF
258	!
259	!-- Send data to other parent processes
260	IF ( ip == 0 ) THEN
261	indchildren(childid)%nrpoints = ian
262	IF ( ian > 0) THEN
263	ALLOCATE( indchildren(childid)%index_list_2d(6,ian) )
264	indchildren(childid)%index_list_2d(:,1:ian) = &
265	index_list(:,is:ie)
266	ENDIF
267	ELSE
268	CALL MPI_SEND( ian, 1, MPI_INTEGER, ip, 1000, m_model_comm, &
269	istat )
270	IF ( ian > 0) THEN
271	CALL MPI_SEND( index_list(1,is), 6*ian, MPI_INTEGER, ip, &
272	1001, m_model_comm, istat )
273	ENDIF
274	ENDIF
275	is = ie + 1
276	ENDDO
277	ELSE
278	CALL MPI_RECV( indchildren(childid)%nrpoints, 1, MPI_INTEGER, 0, 1000, &
279	m_model_comm, MPI_STATUS_IGNORE, istat )
280	ian = indchildren(childid)%nrpoints
281	IF ( ian > 0 ) THEN
282	ALLOCATE( indchildren(childid)%index_list_2d(6,ian) )
283	CALL MPI_RECV( indchildren(childid)%index_list_2d, 6*ian, &
284	MPI_INTEGER, 0, 1001, m_model_comm, &
285	MPI_STATUS_IGNORE, istat)
286	ENDIF
287	ENDIF
288	CALL set_pe_index_list( childid, children(childid), &
289	indchildren(childid)%index_list_2d, &
290	indchildren(childid)%nrpoints )
291
292	END SUBROUTINE pmc_s_set_2d_index_list
293
294
295
296	SUBROUTINE pmc_s_clear_next_array_list
297
298	IMPLICIT NONE
299
300	next_array_in_list = 0
301
302	END SUBROUTINE pmc_s_clear_next_array_list
303
304
305
306	LOGICAL FUNCTION pmc_s_getnextarray( childid, myname )
307
308	!
309	!-- List handling is still required to get minimal interaction with
310	!-- pmc_interface
311	!-- TODO: what does "still" mean? Is there a chance to change this!
312	CHARACTER(LEN=*), INTENT(OUT) :: myname !<
313	INTEGER(iwp), INTENT(IN) :: childid !<
314
315	TYPE(arraydef), POINTER :: ar
316	TYPE(pedef), POINTER :: ape
317
318	next_array_in_list = next_array_in_list + 1
319	!
320	!-- Array names are the same on all children processes, so take first
321	!-- process to get the name
322	ape => children(childid)%pes(1)
323
324	IF ( next_array_in_list > ape%nr_arrays ) THEN
325	!
326	!-- All arrays are done
327	pmc_s_getnextarray = .FALSE.
328	RETURN
329	ENDIF
330
331	ar => ape%array_list(next_array_in_list)
332	myname = ar%name
333	!
334	!-- Return true if legal array
335	!-- TODO: what does this comment mean? Can there be non-legal arrays??
336	pmc_s_getnextarray = .TRUE.
337
338	END FUNCTION pmc_s_getnextarray
339
340
341
342	SUBROUTINE pmc_s_set_dataarray_2d( childid, array, array_2 )
343
344	IMPLICIT NONE
345
346	INTEGER,INTENT(IN) :: childid !<
347
348	REAL(wp), INTENT(IN), DIMENSION(:,:), POINTER :: array !<
349	REAL(wp), INTENT(IN), DIMENSION(:,:), POINTER, OPTIONAL :: array_2 !<
350
351	INTEGER :: nrdims !<
352	INTEGER, DIMENSION(4) :: dims !<
353	TYPE(C_PTR) :: array_adr !<
354	TYPE(C_PTR) :: second_adr !<
355
356
357	dims = 1
358	nrdims = 2
359	dims(1) = SIZE( array,1 )
360	dims(2) = SIZE( array,2 )
361	array_adr = C_LOC( array )
362
363	IF ( PRESENT( array_2 ) ) THEN
364	second_adr = C_LOC(array_2)
365	CALL pmc_s_setarray( childid, nrdims, dims, array_adr, &
366	second_adr = second_adr)
367	ELSE
368	CALL pmc_s_setarray( childid, nrdims, dims, array_adr )
369	ENDIF
370
371	END SUBROUTINE pmc_s_set_dataarray_2d
372
373
374
375	SUBROUTINE pmc_s_set_dataarray_3d( childid, array, nz_cl, nz, array_2 )
376
377	IMPLICIT NONE
378
379	INTEGER, INTENT(IN) :: childid !<
380	INTEGER, INTENT(IN) :: nz !<
381	INTEGER, INTENT(IN) :: nz_cl !<
382
383	REAL(wp), INTENT(IN), DIMENSION(:,:,:), POINTER :: array !<
384	REAL(wp), INTENT(IN), DIMENSION(:,:,:), POINTER, OPTIONAL :: array_2 !<
385
386	INTEGER :: nrdims !<
387	INTEGER, DIMENSION(4) :: dims !<
388	TYPE(C_PTR) :: array_adr !<
389	TYPE(C_PTR) :: second_adr !<
390
391	!
392	!-- TODO: the next assignment seems to be obsolete. Please check!
393	dims = 1
394	dims = 0
395	nrdims = 3
396	dims(1) = SIZE( array,1 )
397	dims(2) = SIZE( array,2 )
398	dims(3) = SIZE( array,3 )
399	dims(4) = nz_cl+dims(1)-nz ! works for first dimension 1:nz and 0:nz+1
400
401	array_adr = C_LOC(array)
402	!
403	!-- In PALM's pointer version, two indices have to be stored internally.
404	!-- The active address of the data array is set in swap_timelevel.
405	IF ( PRESENT( array_2 ) ) THEN
406	second_adr = C_LOC( array_2 )
407	CALL pmc_s_setarray( childid, nrdims, dims, array_adr, &
408	second_adr = second_adr)
409	ELSE
410	CALL pmc_s_setarray( childid, nrdims, dims, array_adr )
411	ENDIF
412
413	END SUBROUTINE pmc_s_set_dataarray_3d
414
415
416
417	SUBROUTINE pmc_s_setind_and_allocmem( childid )
418
419	USE control_parameters, &
420	ONLY: message_string
421
422	IMPLICIT NONE
423
424	!
425	!-- Naming convention for appendices: _pc -> parent to child transfer
426	!-- _cp -> child to parent transfer
427	!-- send -> parent to child transfer
428	!-- recv -> child to parent transfer
429	INTEGER, INTENT(IN) :: childid !<
430
431	INTEGER :: arlen !<
432	INTEGER :: i !<
433	INTEGER :: ierr !<
434	INTEGER :: istat !<
435	INTEGER :: j !<
436	INTEGER :: myindex !<
437	INTEGER :: rcount !< count MPI requests
438	INTEGER :: tag !<
439
440	INTEGER(idp) :: bufsize !< size of MPI data window
441	INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !<
442
443	INTEGER, DIMENSION(1024) :: req !<
444
445	TYPE(C_PTR) :: base_ptr !<
446	TYPE(pedef), POINTER :: ape !<
447	TYPE(arraydef), POINTER :: ar !<
448
449	REAL(wp),DIMENSION(:), POINTER, SAVE :: base_array_pc !< base array for parent to child transfer
450	REAL(wp),DIMENSION(:), POINTER, SAVE :: base_array_cp !< base array for child to parent transfer
451
452	!
453	!-- Parent to child direction
454	myindex = 1
455	rcount = 0
456	bufsize = 8
457	!
458	!-- First stride: compute size and set index
459	DO i = 1, children(childid)%inter_npes
460
461	ape => children(childid)%pes(i)
462	tag = 200
463
464	DO j = 1, ape%nr_arrays
465
466	ar => ape%array_list(j)
467	IF ( ar%nrdims == 2 ) THEN
468	arlen = ape%nrele
469	ELSEIF ( ar%nrdims == 3 ) THEN
470	arlen = ape%nrele * ar%a_dim(4)
471	ELSE
472	arlen = -1
473	ENDIF
474	ar%sendindex = myindex
475
476	tag = tag + 1
477	rcount = rcount + 1
478	CALL MPI_ISEND( myindex, 1, MPI_INTEGER, i-1, tag, &
479	children(childid)%inter_comm, req(rcount), ierr )
480	!
481	!-- Maximum of 1024 outstanding requests
482	!-- TODO: what does this limit mean? Does outstanding mean pending?
483	IF ( rcount == 1024 ) THEN
484	CALL MPI_WAITALL( rcount, req, MPI_STATUSES_IGNORE, ierr )
485	rcount = 0
486	ENDIF
487
488	myindex = myindex + arlen
489	bufsize = bufsize + arlen
490	ar%sendsize = arlen
491	ENDDO
492
493	IF ( rcount > 0 ) THEN
494	CALL MPI_WAITALL( rcount, req, MPI_STATUSES_IGNORE, ierr )
495	ENDIF
496
497	ENDDO
498	!
499	!-- Create RMA (One Sided Communication) window for data buffer parent to
500	!-- child transfer.
501	!-- The buffer of MPI_GET (counterpart of transfer) can be PE-local, i.e.
502	!-- it can but must not be part of the MPI RMA window. Only one RMA window is
503	!-- required to prepare the data for
504	!-- parent -> child transfer on the parent side
505	!-- and for
506	!-- child -> parent transfer on the child side
507	CALL pmc_alloc_mem( base_array_pc, bufsize )
508	children(childid)%totalbuffersize = bufsize * wp
509
510	winsize = bufsize * wp
511	CALL MPI_WIN_CREATE( base_array_pc, winsize, wp, MPI_INFO_NULL, &
512	children(childid)%intra_comm, &
513	children(childid)%win_parent_child, ierr )
514	!
515	!-- Open window to set data
516	CALL MPI_WIN_FENCE( 0, children(childid)%win_parent_child, ierr )
517	!
518	!-- Second stride: set buffer pointer
519	DO i = 1, children(childid)%inter_npes
520
521	ape => children(childid)%pes(i)
522
523	DO j = 1, ape%nr_arrays
524
525	ar => ape%array_list(j)
526	ar%sendbuf = C_LOC( base_array_pc(ar%sendindex) )
527
528	IF ( ar%sendindex + ar%sendsize > bufsize ) THEN
529	WRITE( message_string, '(a,i4,4i7,1x,a)' ) &
530	'parent buffer too small ',i, &
531	ar%sendindex,ar%sendsize,ar%sendindex+ar%sendsize, &
532	bufsize,trim(ar%name)
533	CALL message( 'pmc_s_setind_and_allocmem', 'PA0429', 3, 2, 0, 6, 0 )
534	ENDIF
535	ENDDO
536	ENDDO
537	!
538	!-- Child to parent direction
539	bufsize = 8
540	!
541	!-- First stride: compute size and set index
542	DO i = 1, children(childid)%inter_npes
543	ape => children(childid)%pes(i)
544	tag = 300
545	DO j = 1, ape%nr_arrays
546	ar => ape%array_list(j)
547	!
548	!-- Receive index from child
549	tag = tag + 1
550	CALL MPI_RECV( myindex, 1, MPI_INTEGER, i-1, tag, &
551	children(childid)%inter_comm, MPI_STATUS_IGNORE, ierr )
552	IF ( ar%nrdims == 3 ) THEN
553	bufsize = MAX( bufsize, ape%nrele * ar%a_dim(4) )
554	ELSE
555	bufsize = MAX( bufsize, ape%nrele )
556	ENDIF
557	ar%recvindex = myindex
558	ENDDO
559	ENDDO
560	!
561	!-- Create RMA (one sided communication) data buffer.
562	!-- The buffer for MPI_GET can be PE local, i.e. it can but must not be part of
563	!-- the MPI RMA window
564	CALL pmc_alloc_mem( base_array_cp, bufsize, base_ptr )
565	children(childid)%totalbuffersize = bufsize * wp
566
567	CALL MPI_BARRIER( children(childid)%intra_comm, ierr )
568	!
569	!-- Second stride: set buffer pointer
570	DO i = 1, children(childid)%inter_npes
571	ape => children(childid)%pes(i)
572	DO j = 1, ape%nr_arrays
573	ar => ape%array_list(j)
574	ar%recvbuf = base_ptr
575	ENDDO
576	ENDDO
577
578	END SUBROUTINE pmc_s_setind_and_allocmem
579
580
581
582	SUBROUTINE pmc_s_fillbuffer( childid, waittime )
583
584	IMPLICIT NONE
585
586	INTEGER, INTENT(IN) :: childid !<
587
588	REAL(wp), INTENT(OUT), OPTIONAL :: waittime !<
589
590	INTEGER :: ierr !<
591	INTEGER :: ij !<
592	INTEGER :: ip !<
593	INTEGER :: istat !<
594	INTEGER :: j !<
595	INTEGER :: myindex !<
596
597	INTEGER, DIMENSION(1) :: buf_shape
598
599	REAL(wp) :: t1 !<
600	REAL(wp) :: t2 !<
601	REAL(wp), POINTER, DIMENSION(:) :: buf !<
602	REAL(wp), POINTER, DIMENSION(:,:) :: data_2d !<
603	REAL(wp), POINTER, DIMENSION(:,:,:) :: data_3d !<
604
605	TYPE(pedef), POINTER :: ape !<
606	TYPE(arraydef), POINTER :: ar !<
607
608	!
609	!-- Synchronization of the model is done in pmci_synchronize.
610	!-- Therefor the RMA window can be filled without
611	!-- sychronization at this point and a barrier is not necessary.
612	!-- Please note that waittime has to be set in pmc_s_fillbuffer AND
613	!-- pmc_c_getbuffer
614	IF ( PRESENT( waittime) ) THEN
615	t1 = pmc_time()
616	CALL MPI_BARRIER( children(childid)%intra_comm, ierr )
617	t2 = pmc_time()
618	waittime = t2- t1
619	ENDIF
620
621	DO ip = 1, children(childid)%inter_npes
622	ape => children(childid)%pes(ip)
623	DO j = 1, ape%nr_arrays
624	ar => ape%array_list(j)
625	myindex = 1
626	IF ( ar%nrdims == 2 ) THEN
627	buf_shape(1) = ape%nrele
628	CALL C_F_POINTER( ar%sendbuf, buf, buf_shape )
629	CALL C_F_POINTER( ar%data, data_2d, ar%a_dim(1:2) )
630	DO ij = 1, ape%nrele
631	buf(myindex) = data_2d(ape%locind(ij)%j,ape%locind(ij)%i)
632	myindex = myindex + 1
633	ENDDO
634	ELSEIF ( ar%nrdims == 3 ) THEN
635	buf_shape(1) = ape%nrele*ar%a_dim(4)
636	CALL C_F_POINTER( ar%sendbuf, buf, buf_shape )
637	CALL C_F_POINTER( ar%data, data_3d, ar%a_dim(1:3) )
638	DO ij = 1, ape%nrele
639	buf(myindex:myindex+ar%a_dim(4)-1) = &
640	data_3d(1:ar%a_dim(4),ape%locind(ij)%j,ape%locind(ij)%i)
641	myindex = myindex + ar%a_dim(4)
642	ENDDO
643	ENDIF
644	ENDDO
645	ENDDO
646	!
647	!-- Buffer is filled
648	CALL MPI_BARRIER( children(childid)%intra_comm, ierr )
649
650	END SUBROUTINE pmc_s_fillbuffer
651
652
653
654	SUBROUTINE pmc_s_getdata_from_buffer( childid, waittime )
655
656	IMPLICIT NONE
657
658	INTEGER, INTENT(IN) :: childid !<
659	REAL(wp), INTENT(OUT), OPTIONAL :: waittime !<
660
661	INTEGER :: ierr !<
662	INTEGER :: ij !<
663	INTEGER :: ip !<
664	INTEGER :: istat !<
665	INTEGER :: j !<
666	INTEGER :: myindex !<
667	INTEGER :: nr !<
668	INTEGER :: target_pe !<
669	INTEGER(kind=MPI_ADDRESS_KIND) :: target_disp !<
670
671	INTEGER, DIMENSION(1) :: buf_shape !<
672
673	REAL(wp) :: t1 !<
674	REAL(wp) :: t2 !<
675	REAL(wp), POINTER, DIMENSION(:) :: buf !<
676	REAL(wp), POINTER, DIMENSION(:,:) :: data_2d !<
677	REAL(wp), POINTER, DIMENSION(:,:,:) :: data_3d !<
678
679	TYPE(pedef), POINTER :: ape !<
680	TYPE(arraydef), POINTER :: ar !<
681
682
683	t1 = pmc_time()
684	!
685	!-- Wait for child to fill buffer
686	CALL MPI_BARRIER( children(childid)%intra_comm, ierr )
687	t2 = pmc_time() - t1
688	IF ( PRESENT( waittime ) ) waittime = t2
689	!
690	!-- TODO: check next statement
691	!-- Fence might do it, test later
692	!-- CALL MPI_WIN_FENCE( 0, children(childid)%win_parent_child, ierr)
693	CALL MPI_BARRIER( children(childid)%intra_comm, ierr )
694
695	DO ip = 1, children(childid)%inter_npes
696	ape => children(childid)%pes(ip)
697	DO j = 1, ape%nr_arrays
698	ar => ape%array_list(j)
699
700	IF ( ar%recvindex < 0 ) CYCLE
701
702	IF ( ar%nrdims == 2 ) THEN
703	nr = ape%nrele
704	ELSEIF ( ar%nrdims == 3 ) THEN
705	nr = ape%nrele * ar%a_dim(4)
706	ENDIF
707	buf_shape(1) = nr
708	CALL C_F_POINTER( ar%recvbuf, buf, buf_shape )
709	!
710	!-- MPI passive target RMA
711	IF ( nr > 0 ) THEN
712	target_disp = ar%recvindex - 1
713	!
714	!-- Child processes are located behind parent process
715	target_pe = ip - 1 + m_model_npes
716	CALL MPI_WIN_LOCK( MPI_LOCK_SHARED, target_pe, 0, &
717	children(childid)%win_parent_child, ierr )
718	CALL MPI_GET( buf, nr, MPI_REAL, target_pe, target_disp, nr, &
719	MPI_REAL, children(childid)%win_parent_child, ierr )
720	CALL MPI_WIN_UNLOCK( target_pe, &
721	children(childid)%win_parent_child, ierr )
722	ENDIF
723	myindex = 1
724	IF ( ar%nrdims == 2 ) THEN
725	CALL C_F_POINTER( ar%data, data_2d, ar%a_dim(1:2) )
726	DO ij = 1, ape%nrele
727	data_2d(ape%locind(ij)%j,ape%locind(ij)%i) = buf(myindex)
728	myindex = myindex + 1
729	ENDDO
730	ELSEIF ( ar%nrdims == 3 ) THEN
731	CALL C_F_POINTER( ar%data, data_3d, ar%a_dim(1:3))
732	DO ij = 1, ape%nrele
733	data_3d(1:ar%a_dim(4),ape%locind(ij)%j,ape%locind(ij)%i) = &
734	buf(myindex:myindex+ar%a_dim(4)-1)
735	myindex = myindex + ar%a_dim(4)
736	ENDDO
737	ENDIF
738	ENDDO
739	ENDDO
740
741	END SUBROUTINE pmc_s_getdata_from_buffer
742
743
744
745	SUBROUTINE get_da_names_from_child( childid )
746
747	!
748	!-- Get data array description and name from child
749	IMPLICIT NONE
750
751	INTEGER, INTENT(IN) :: childid !<
752
753	TYPE(da_namedef) :: myname !<
754
755	DO
756	CALL pmc_bcast( myname%couple_index, 0, comm=m_to_child_comm(childid) )
757	IF ( myname%couple_index == -1 ) EXIT
758	CALL pmc_bcast( myname%parentdesc, 0, comm=m_to_child_comm(childid) )
759	CALL pmc_bcast( myname%nameonparent, 0, comm=m_to_child_comm(childid) )
760	CALL pmc_bcast( myname%childdesc, 0, comm=m_to_child_comm(childid) )
761	CALL pmc_bcast( myname%nameonchild, 0, comm=m_to_child_comm(childid) )
762
763	CALL pmc_g_setname( children(childid), myname%couple_index, &
764	myname%nameonparent )
765	ENDDO
766
767	END SUBROUTINE get_da_names_from_child
768
769
770
771	SUBROUTINE pmc_s_setarray(childid, nrdims, dims, array_adr, second_adr )
772
773	!
774	!-- Set array for child inter process 0
775	IMPLICIT NONE
776
777	INTEGER, INTENT(IN) :: childid !<
778	INTEGER, INTENT(IN) :: nrdims !<
779	INTEGER, INTENT(IN), DIMENSION(:) :: dims !<
780
781	TYPE(C_PTR), INTENT(IN) :: array_adr !<
782	TYPE(C_PTR), INTENT(IN), OPTIONAL :: second_adr !<
783
784	INTEGER :: i !< local counter
785
786	TYPE(pedef), POINTER :: ape !<
787	TYPE(arraydef), POINTER :: ar !<
788
789
790	DO i = 1, children(childid)%inter_npes
791	ape => children(childid)%pes(i)
792	ar => ape%array_list(next_array_in_list)
793	ar%nrdims = nrdims
794	ar%a_dim = dims
795	ar%data = array_adr
796	IF ( PRESENT( second_adr ) ) THEN
797	ar%po_data(1) = array_adr
798	ar%po_data(2) = second_adr
799	ELSE
800	ar%po_data(1) = C_NULL_PTR
801	ar%po_data(2) = C_NULL_PTR
802	ENDIF
803	ENDDO
804
805	END SUBROUTINE pmc_s_setarray
806
807
808
809	SUBROUTINE pmc_s_set_active_data_array( childid, iactive )
810
811	IMPLICIT NONE
812
813	INTEGER, INTENT(IN) :: childid !<
814	INTEGER, INTENT(IN) :: iactive !<
815
816	INTEGER :: i !<
817	INTEGER :: ip !<
818	INTEGER :: j !<
819
820	TYPE(pedef), POINTER :: ape !<
821	TYPE(arraydef), POINTER :: ar !<
822
823	DO ip = 1, children(childid)%inter_npes
824	ape => children(childid)%pes(ip)
825	DO j = 1, ape%nr_arrays
826	ar => ape%array_list(j)
827	IF ( iactive == 1 .OR. iactive == 2 ) THEN
828	ar%data = ar%po_data(iactive)
829	ENDIF
830	ENDDO
831	ENDDO
832
833	END SUBROUTINE pmc_s_set_active_data_array
834
835
836
837	SUBROUTINE set_pe_index_list( childid, mychild, index_list, nrp )
838
839	IMPLICIT NONE
840
841	INTEGER, INTENT(IN) :: childid !<
842	INTEGER, INTENT(IN), DIMENSION(:,:) :: index_list !<
843	INTEGER, INTENT(IN) :: nrp !<
844
845	TYPE(childdef), INTENT(INOUT) :: mychild !<
846
847	INTEGER :: i !<
848	INTEGER :: ierr !<
849	INTEGER :: ind !<
850	INTEGER :: indwin !<
851	INTEGER :: indwin2 !<
852	INTEGER :: i2 !<
853	INTEGER :: j !<
854	INTEGER :: rempe !<
855	INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !<
856
857	INTEGER, DIMENSION(mychild%inter_npes) :: remind !<
858
859	INTEGER, DIMENSION(:), POINTER :: remindw !<
860	INTEGER, DIMENSION(:), POINTER :: rldef !<
861
862	TYPE(pedef), POINTER :: ape !<
863
864	!
865	!-- First, count entries for every remote child process
866	DO i = 1, mychild%inter_npes
867	ape => mychild%pes(i)
868	ape%nrele = 0
869	ENDDO
870	!
871	!-- Loop over number of coarse grid cells
872	DO j = 1, nrp
873	rempe = index_list(5,j) + 1 ! process number on remote process
874	ape => mychild%pes(rempe)
875	ape%nrele = ape%nrele + 1 ! Increment number of elements for this child process
876	ENDDO
877
878	DO i = 1, mychild%inter_npes
879	ape => mychild%pes(i)
880	ALLOCATE( ape%locind(ape%nrele) )
881	ENDDO
882
883	remind = 0
884	!
885	!-- Second, create lists
886	!-- Loop over number of coarse grid cells
887	DO j = 1, nrp
888	rempe = index_list(5,j) + 1
889	ape => mychild%pes(rempe)
890	remind(rempe) = remind(rempe)+1
891	ind = remind(rempe)
892	ape%locind(ind)%i = index_list(1,j)
893	ape%locind(ind)%j = index_list(2,j)
894	ENDDO
895	!
896	!-- Prepare number of elements for children processes
897	CALL pmc_alloc_mem( rldef, mychild%inter_npes*2 )
898	!
899	!-- Number of child processes * size of INTEGER (i just arbitrary INTEGER)
900	winsize = mychild%inter_npesc_sizeof(i)2
901
902	CALL MPI_WIN_CREATE( rldef, winsize, iwp, MPI_INFO_NULL, &
903	mychild%intra_comm, indwin, ierr )
904	!
905	!-- Open window to set data
906	CALL MPI_WIN_FENCE( 0, indwin, ierr )
907
908	rldef(1) = 0 ! index on remote process 0
909	rldef(2) = remind(1) ! number of elements on remote process 0
910	!
911	!-- Reserve buffer for index array
912	DO i = 2, mychild%inter_npes
913	i2 = (i-1) * 2 + 1
914	rldef(i2) = rldef(i2-2) + rldef(i2-1) * 2 ! index on remote process
915	rldef(i2+1) = remind(i) ! number of elements on remote process
916	ENDDO
917	!
918	!-- Close window to allow child to access data
919	CALL MPI_WIN_FENCE( 0, indwin, ierr )
920	!
921	!-- Child has retrieved data
922	CALL MPI_WIN_FENCE( 0, indwin, ierr )
923
924	i2 = 2 * mychild%inter_npes - 1
925	winsize = ( rldef(i2) + rldef(i2+1) ) * 2
926	!
927	!-- Make sure, MPI_ALLOC_MEM works
928	winsize = MAX( winsize, 1 )
929
930	CALL pmc_alloc_mem( remindw, INT( winsize ) )
931
932	CALL MPI_BARRIER( m_model_comm, ierr )
933	CALL MPI_WIN_CREATE( remindw, winsize*c_sizeof(i), iwp, MPI_INFO_NULL, &
934	mychild%intra_comm, indwin2, ierr )
935	!
936	!-- Open window to set data
937	CALL MPI_WIN_FENCE( 0, indwin2, ierr )
938	!
939	!-- Create the 2D index list
940	DO j = 1, nrp
941	rempe = index_list(5,j) + 1 ! process number on remote process
942	ape => mychild%pes(rempe)
943	i2 = rempe * 2 - 1
944	ind = rldef(i2) + 1
945	remindw(ind) = index_list(3,j)
946	remindw(ind+1) = index_list(4,j)
947	rldef(i2) = rldef(i2)+2
948	ENDDO
949	!
950	!-- All data are set
951	CALL MPI_WIN_FENCE( 0, indwin2, ierr )
952	!
953	!-- Don't know why, but this barrier is necessary before windows can be freed
954	!-- TODO: find out why this is required
955	CALL MPI_BARRIER( mychild%intra_comm, ierr )
956
957	CALL MPI_WIN_FREE( indwin, ierr )
958	CALL MPI_WIN_FREE( indwin2, ierr )
959
960	!
961	!-- TODO: check if the following idea needs to be done
962	!-- Sollte funktionieren, Problem mit MPI implementation
963	!-- https://www.lrz.de/services/software/parallel/mpi/onesided
964	!-- CALL MPI_Free_mem (remindw, ierr)
965
966	END SUBROUTINE set_pe_index_list
967
968	#endif
969	END MODULE pmc_parent

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