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parallel.F90 @ 3438

Last change on this file since 3438 was 1678, checked in by Ehouarn Millour, 12 years ago
Add a "fix" to parallel.F90 (otherwise ifort complains and wrongly fails to compile when in debug mode): add a dummy allocation of Buffer_Recv(), even when it is not needed. EM
File size: 18.7 KB

Line
1	!
2	! $Id$
3	!
4	module parallel
5	USE mod_const_mpi
6
7	INTEGER,PARAMETER :: halo_max=3
8
9	LOGICAL,SAVE :: using_mpi
10	LOGICAL,SAVE :: using_omp
11
12	integer, save :: mpi_size
13	integer, save :: mpi_rank
14	integer, save :: jj_begin
15	integer, save :: jj_end
16	integer, save :: jj_nb
17	integer, save :: ij_begin
18	integer, save :: ij_end
19	logical, save :: pole_nord
20	logical, save :: pole_sud
21
22	integer,save :: jjb_u
23	integer,save :: jje_u
24	integer,save :: jjnb_u
25	integer,save :: jjb_v
26	integer,save :: jje_v
27	integer,save :: jjnb_v
28
29	integer,save :: ijb_u
30	integer,save :: ije_u
31	integer,save :: ijnb_u
32
33	integer,save :: ijb_v
34	integer,save :: ije_v
35	integer,save :: ijnb_v
36
37
38	integer, allocatable, save, dimension(:) :: jj_begin_para
39	integer, allocatable, save, dimension(:) :: jj_end_para
40	integer, allocatable, save, dimension(:) :: jj_nb_para
41	integer, save :: OMP_CHUNK
42	integer, save :: omp_rank
43	integer, save :: omp_size
44	!$OMP THREADPRIVATE(omp_rank)
45
46	TYPE distrib
47	integer :: jj_begin
48	integer :: jj_end
49	integer :: jj_nb
50	integer :: ij_begin
51	integer :: ij_end
52
53	integer :: jjb_u
54	integer :: jje_u
55	integer :: jjnb_u
56	integer :: jjb_v
57	integer :: jje_v
58	integer :: jjnb_v
59
60	integer :: ijb_u
61	integer :: ije_u
62	integer :: ijnb_u
63
64	integer :: ijb_v
65	integer :: ije_v
66	integer :: ijnb_v
67
68
69	integer, pointer :: jj_begin_para(:) => NULL()
70	integer, pointer :: jj_end_para(:) => NULL()
71	integer, pointer :: jj_nb_para(:) => NULL()
72	END TYPE distrib
73
74	INTERFACE ASSIGNMENT (=)
75	MODULE PROCEDURE copy_distrib
76	END INTERFACE
77	TYPE(distrib),SAVE :: current_dist
78
79	contains
80
81	subroutine init_parallel
82	USE vampir
83	implicit none
84	#ifdef CPP_MPI
85	include 'mpif.h'
86	#endif
87	#include "dimensions.h"
88	#include "paramet.h"
89	#include "iniprint.h"
90
91	integer :: ierr
92	integer :: i,j
93	integer :: type_size
94	integer, dimension(3) :: blocklen,type
95	integer :: comp_id
96	character(len=4) :: num
97	character(len=20) :: filename
98
99	#ifdef CPP_OMP
100	INTEGER :: OMP_GET_NUM_THREADS
101	EXTERNAL OMP_GET_NUM_THREADS
102	INTEGER :: OMP_GET_THREAD_NUM
103	EXTERNAL OMP_GET_THREAD_NUM
104	#endif
105
106	#ifdef CPP_MPI
107	using_mpi=.TRUE.
108	#else
109	using_mpi=.FALSE.
110	#endif
111
112
113	#ifdef CPP_OMP
114	using_OMP=.TRUE.
115	#else
116	using_OMP=.FALSE.
117	#endif
118
119	call InitVampir
120
121	IF (using_mpi) THEN
122	#ifdef CPP_MPI
123	call MPI_COMM_SIZE(COMM_LMDZ,mpi_size,ierr)
124	call MPI_COMM_RANK(COMM_LMDZ,mpi_rank,ierr)
125	#endif
126	ELSE
127	mpi_size=1
128	mpi_rank=0
129	ENDIF
130
131
132	! Open text output file with mpi_rank in suffix of file name
133	IF (lunout /= 5 .and. lunout /= 6) THEN
134	WRITE(num,'(I4.4)') mpi_rank
135	filename='lmdz.out_'//num
136	IF (mpi_rank .NE. 0) THEN
137	OPEN(UNIT=lunout,FILE=TRIM(filename),ACTION='write', &
138	STATUS='unknown',FORM='formatted',IOSTAT=ierr)
139	ENDIF
140	ENDIF
141
142
143	allocate(jj_begin_para(0:mpi_size-1))
144	allocate(jj_end_para(0:mpi_size-1))
145	allocate(jj_nb_para(0:mpi_size-1))
146
147	do i=0,mpi_size-1
148	jj_nb_para(i)=(jjm+1)/mpi_size
149	if ( i < MOD((jjm+1),mpi_size) ) jj_nb_para(i)=jj_nb_para(i)+1
150
151	if (jj_nb_para(i) <= 2 ) then
152
153	write(lunout,*)"Arret : le nombre de bande de lattitude par process est trop faible (<2)."
154	write(lunout,*)" ---> diminuez le nombre de CPU ou augmentez la taille en lattitude"
155
156	#ifdef CPP_MPI
157	IF (using_mpi) call MPI_ABORT(COMM_LMDZ,-1, ierr)
158	#endif
159	endif
160
161	enddo
162
163	! jj_nb_para(0)=11
164	! jj_nb_para(1)=25
165	! jj_nb_para(2)=25
166	! jj_nb_para(3)=12
167
168	j=1
169
170	do i=0,mpi_size-1
171
172	jj_begin_para(i)=j
173	jj_end_para(i)=j+jj_Nb_para(i)-1
174	j=j+jj_Nb_para(i)
175
176	enddo
177
178	jj_begin = jj_begin_para(mpi_rank)
179	jj_end = jj_end_para(mpi_rank)
180	jj_nb = jj_nb_para(mpi_rank)
181
182	ij_begin=(jj_begin-1)*iip1+1
183	ij_end=jj_end*iip1
184
185	if (mpi_rank.eq.0) then
186	pole_nord=.TRUE.
187	else
188	pole_nord=.FALSE.
189	endif
190
191	if (mpi_rank.eq.mpi_size-1) then
192	pole_sud=.TRUE.
193	else
194	pole_sud=.FALSE.
195	endif
196
197	write(lunout,*)"init_parallel: jj_begin",jj_begin
198	write(lunout,*)"init_parallel: jj_end",jj_end
199	write(lunout,*)"init_parallel: ij_begin",ij_begin
200	write(lunout,*)"init_parallel: ij_end",ij_end
201	jjb_u=MAX(jj_begin-halo_max,1)
202	jje_u=MIN(jj_end+halo_max,jjp1)
203	jjnb_u=jje_u-jjb_u+1
204
205	jjb_v=MAX(jj_begin-halo_max,1)
206	jje_v=MIN(jj_end+halo_max,jjm)
207	jjnb_v=jje_v-jjb_v+1
208
209	ijb_u=MAX(ij_begin-halo_max*iip1,1)
210	ije_u=MIN(ij_end+halo_max*iip1,ip1jmp1)
211	ijnb_u=ije_u-ijb_u+1
212
213	ijb_v=MAX(ij_begin-halo_max*iip1,1)
214	ije_v=MIN(ij_end+halo_max*iip1,ip1jm)
215	ijnb_v=ije_v-ijb_v+1
216
217	!$OMP PARALLEL
218
219	#ifdef CPP_OMP
220	!$OMP MASTER
221	omp_size=OMP_GET_NUM_THREADS()
222	!$OMP END MASTER
223	omp_rank=OMP_GET_THREAD_NUM()
224	#else
225	omp_size=1
226	omp_rank=0
227	#endif
228	!$OMP END PARALLEL
229	CALL create_distrib(jj_nb_para,current_dist)
230
231	end subroutine init_parallel
232
233	SUBROUTINE create_distrib(jj_nb_new,d)
234	IMPLICIT NONE
235	INCLUDE "dimensions.h"
236	INCLUDE "paramet.h"
237
238	INTEGER,INTENT(IN) :: jj_Nb_New(0:MPI_Size-1)
239	TYPE(distrib),INTENT(INOUT) :: d
240	INTEGER :: i
241
242	IF (.NOT. ASSOCIATED(d%jj_nb_para)) ALLOCATE(d%jj_nb_para(0:MPI_Size-1))
243	IF (.NOT. ASSOCIATED(d%jj_begin_para)) ALLOCATE(d%jj_begin_para(0:MPI_Size-1))
244	IF (.NOT. ASSOCIATED(d%jj_end_para)) ALLOCATE(d%jj_end_para(0:MPI_Size-1))
245
246	d%jj_Nb_Para=jj_Nb_New
247
248	d%jj_begin_para(0)=1
249	d%jj_end_para(0)=d%jj_Nb_Para(0)
250
251	do i=1,mpi_size-1
252
253	d%jj_begin_para(i)=d%jj_end_para(i-1)+1
254	d%jj_end_para(i)=d%jj_begin_para(i)+d%jj_Nb_para(i)-1
255
256	enddo
257
258	d%jj_begin = d%jj_begin_para(mpi_rank)
259	d%jj_end = d%jj_end_para(mpi_rank)
260	d%jj_nb = d%jj_nb_para(mpi_rank)
261
262	d%ij_begin=(d%jj_begin-1)*iip1+1
263	d%ij_end=d%jj_end*iip1
264
265	d%jjb_u=MAX(d%jj_begin-halo_max,1)
266	d%jje_u=MIN(d%jj_end+halo_max,jjp1)
267	d%jjnb_u=d%jje_u-d%jjb_u+1
268
269	d%jjb_v=MAX(d%jj_begin-halo_max,1)
270	d%jje_v=MIN(d%jj_end+halo_max,jjm)
271	d%jjnb_v=d%jje_v-d%jjb_v+1
272
273	d%ijb_u=MAX(d%ij_begin-halo_max*iip1,1)
274	d%ije_u=MIN(d%ij_end+halo_max*iip1,ip1jmp1)
275	d%ijnb_u=d%ije_u-d%ijb_u+1
276
277	d%ijb_v=MAX(d%ij_begin-halo_max*iip1,1)
278	d%ije_v=MIN(d%ij_end+halo_max*iip1,ip1jm)
279	d%ijnb_v=d%ije_v-d%ijb_v+1
280
281	END SUBROUTINE create_distrib
282
283
284	SUBROUTINE Set_Distrib(d)
285	IMPLICIT NONE
286
287	INCLUDE "dimensions.h"
288	INCLUDE "paramet.h"
289	TYPE(distrib),INTENT(IN) :: d
290
291	jj_begin = d%jj_begin
292	jj_end = d%jj_end
293	jj_nb = d%jj_nb
294	ij_begin = d%ij_begin
295	ij_end = d%ij_end
296
297	jjb_u = d%jjb_u
298	jje_u = d%jje_u
299	jjnb_u = d%jjnb_u
300	jjb_v = d%jjb_v
301	jje_v = d%jje_v
302	jjnb_v = d%jjnb_v
303
304	ijb_u = d%ijb_u
305	ije_u = d%ije_u
306	ijnb_u = d%ijnb_u
307
308	ijb_v = d%ijb_v
309	ije_v = d%ije_v
310	ijnb_v = d%ijnb_v
311
312
313	jj_begin_para(:) = d%jj_begin_para(:)
314	jj_end_para(:) = d%jj_end_para(:)
315	jj_nb_para(:) = d%jj_nb_para(:)
316	current_dist=d
317
318	END SUBROUTINE Set_Distrib
319
320	SUBROUTINE copy_distrib(dist,new_dist)
321	IMPLICIT NONE
322
323	INCLUDE "dimensions.h"
324	INCLUDE "paramet.h"
325	TYPE(distrib),INTENT(INOUT) :: dist
326	TYPE(distrib),INTENT(IN) :: new_dist
327
328	dist%jj_begin = new_dist%jj_begin
329	dist%jj_end = new_dist%jj_end
330	dist%jj_nb = new_dist%jj_nb
331	dist%ij_begin = new_dist%ij_begin
332	dist%ij_end = new_dist%ij_end
333
334	dist%jjb_u = new_dist%jjb_u
335	dist%jje_u = new_dist%jje_u
336	dist%jjnb_u = new_dist%jjnb_u
337	dist%jjb_v = new_dist%jjb_v
338	dist%jje_v = new_dist%jje_v
339	dist%jjnb_v = new_dist%jjnb_v
340
341	dist%ijb_u = new_dist%ijb_u
342	dist%ije_u = new_dist%ije_u
343	dist%ijnb_u = new_dist%ijnb_u
344
345	dist%ijb_v = new_dist%ijb_v
346	dist%ije_v = new_dist%ije_v
347	dist%ijnb_v = new_dist%ijnb_v
348
349
350	dist%jj_begin_para(:) = new_dist%jj_begin_para(:)
351	dist%jj_end_para(:) = new_dist%jj_end_para(:)
352	dist%jj_nb_para(:) = new_dist%jj_nb_para(:)
353
354	END SUBROUTINE copy_distrib
355
356
357	SUBROUTINE get_current_distrib(d)
358	IMPLICIT NONE
359
360	INCLUDE "dimensions.h"
361	INCLUDE "paramet.h"
362	TYPE(distrib),INTENT(OUT) :: d
363
364	d=current_dist
365
366	END SUBROUTINE get_current_distrib
367
368	subroutine Finalize_parallel
369	#ifdef CPP_COUPLE
370	use mod_prism_proto
371	#endif
372	#ifdef CPP_EARTH
373	! Ehouarn: surface_data module is in 'phylmd' ...
374	use surface_data, only : type_ocean
375	implicit none
376	#else
377	implicit none
378	! without the surface_data module, we declare (and set) a dummy 'type_ocean'
379	character(len=6),parameter :: type_ocean="dummy"
380	#endif
381	! #endif of #ifdef CPP_EARTH
382
383	include "dimensions.h"
384	include "paramet.h"
385	#ifdef CPP_MPI
386	include 'mpif.h'
387	#endif
388
389	integer :: ierr
390	integer :: i
391
392	if (allocated(jj_begin_para)) deallocate(jj_begin_para)
393	if (allocated(jj_end_para)) deallocate(jj_end_para)
394	if (allocated(jj_nb_para)) deallocate(jj_nb_para)
395
396	if (type_ocean == 'couple') then
397	#ifdef CPP_COUPLE
398	call prism_terminate_proto(ierr)
399	IF (ierr .ne. PRISM_Ok) THEN
400	call abort_gcm('Finalize_parallel',' Probleme dans prism_terminate_proto ',1)
401	endif
402	#endif
403	else
404	#ifdef CPP_MPI
405	IF (using_mpi) call MPI_FINALIZE(ierr)
406	#endif
407	end if
408
409	end subroutine Finalize_parallel
410
411	subroutine Pack_Data(Field,ij,ll,row,Buffer)
412	implicit none
413
414	#include "dimensions.h"
415	#include "paramet.h"
416
417	integer, intent(in) :: ij,ll,row
418	real,dimension(ij,ll),intent(in) ::Field
419	real,dimension(lliip1row), intent(out) :: Buffer
420
421	integer :: Pos
422	integer :: i,l
423
424	Pos=0
425	do l=1,ll
426	do i=1,row*iip1
427	Pos=Pos+1
428	Buffer(Pos)=Field(i,l)
429	enddo
430	enddo
431
432	end subroutine Pack_data
433
434	subroutine Unpack_Data(Field,ij,ll,row,Buffer)
435	implicit none
436
437	#include "dimensions.h"
438	#include "paramet.h"
439
440	integer, intent(in) :: ij,ll,row
441	real,dimension(ij,ll),intent(out) ::Field
442	real,dimension(lliip1row), intent(in) :: Buffer
443
444	integer :: Pos
445	integer :: i,l
446
447	Pos=0
448
449	do l=1,ll
450	do i=1,row*iip1
451	Pos=Pos+1
452	Field(i,l)=Buffer(Pos)
453	enddo
454	enddo
455
456	end subroutine UnPack_data
457
458
459	SUBROUTINE barrier
460	IMPLICIT NONE
461	#ifdef CPP_MPI
462	INCLUDE 'mpif.h'
463	#endif
464	INTEGER :: ierr
465
466	!$OMP CRITICAL (MPI)
467	#ifdef CPP_MPI
468	IF (using_mpi) CALL MPI_Barrier(COMM_LMDZ,ierr)
469	#endif
470	!$OMP END CRITICAL (MPI)
471
472	END SUBROUTINE barrier
473
474
475	subroutine exchange_hallo(Field,ij,ll,up,down)
476	USE Vampir
477	implicit none
478	#include "dimensions.h"
479	#include "paramet.h"
480	#ifdef CPP_MPI
481	include 'mpif.h'
482	#endif
483	INTEGER :: ij,ll
484	REAL, dimension(ij,ll) :: Field
485	INTEGER :: up,down
486
487	INTEGER :: ierr
488	LOGICAL :: SendUp,SendDown
489	LOGICAL :: RecvUp,RecvDown
490	INTEGER, DIMENSION(4) :: Request
491	#ifdef CPP_MPI
492	INTEGER, DIMENSION(MPI_STATUS_SIZE,4) :: Status
493	#else
494	INTEGER, DIMENSION(1,4) :: Status
495	#endif
496	INTEGER :: NbRequest
497	REAL, dimension(:),allocatable :: Buffer_Send_up,Buffer_Send_down
498	REAL, dimension(:),allocatable :: Buffer_Recv_up,Buffer_Recv_down
499	INTEGER :: Buffer_size
500
501	IF (using_mpi) THEN
502
503	CALL barrier
504
505	call VTb(VThallo)
506
507	SendUp=.TRUE.
508	SendDown=.TRUE.
509	RecvUp=.TRUE.
510	RecvDown=.TRUE.
511
512	IF (pole_nord) THEN
513	SendUp=.FALSE.
514	RecvUp=.FALSE.
515	ENDIF
516
517	IF (pole_sud) THEN
518	SendDown=.FALSE.
519	RecvDown=.FALSE.
520	ENDIF
521
522	if (up.eq.0) then
523	SendDown=.FALSE.
524	RecvUp=.FALSE.
525	endif
526
527	if (down.eq.0) then
528	SendUp=.FALSE.
529	RecvDown=.FALSE.
530	endif
531
532	NbRequest=0
533
534	IF (SendUp) THEN
535	NbRequest=NbRequest+1
536	buffer_size=downiip1ll
537	allocate(Buffer_Send_up(Buffer_size))
538	call PACK_Data(Field(ij_begin,1),ij,ll,down,Buffer_Send_up)
539	!$OMP CRITICAL (MPI)
540	#ifdef CPP_MPI
541	call MPI_ISSEND(Buffer_send_up,Buffer_Size,MPI_REAL8,MPI_Rank-1,1, &
542	COMM_LMDZ,Request(NbRequest),ierr)
543	#endif
544	!$OMP END CRITICAL (MPI)
545	ENDIF
546
547	IF (SendDown) THEN
548	NbRequest=NbRequest+1
549
550	buffer_size=upiip1ll
551	allocate(Buffer_Send_down(Buffer_size))
552	call PACK_Data(Field(ij_end+1-up*iip1,1),ij,ll,up,Buffer_send_down)
553
554	!$OMP CRITICAL (MPI)
555	#ifdef CPP_MPI
556	call MPI_ISSEND(Buffer_send_down,Buffer_Size,MPI_REAL8,MPI_Rank+1,1, &
557	COMM_LMDZ,Request(NbRequest),ierr)
558	#endif
559	!$OMP END CRITICAL (MPI)
560	ENDIF
561
562
563	IF (RecvUp) THEN
564	NbRequest=NbRequest+1
565	buffer_size=upiip1ll
566	allocate(Buffer_recv_up(Buffer_size))
567
568	!$OMP CRITICAL (MPI)
569	#ifdef CPP_MPI
570	call MPI_IRECV(Buffer_recv_up,Buffer_size,MPI_REAL8,MPI_Rank-1,1, &
571	COMM_LMDZ,Request(NbRequest),ierr)
572	#endif
573	!$OMP END CRITICAL (MPI)
574
575
576	ENDIF
577
578	IF (RecvDown) THEN
579	NbRequest=NbRequest+1
580	buffer_size=downiip1ll
581	allocate(Buffer_recv_down(Buffer_size))
582
583	!$OMP CRITICAL (MPI)
584	#ifdef CPP_MPI
585	call MPI_IRECV(Buffer_recv_down,Buffer_size,MPI_REAL8,MPI_Rank+1,1, &
586	COMM_LMDZ,Request(NbRequest),ierr)
587	#endif
588	!$OMP END CRITICAL (MPI)
589
590	ENDIF
591
592	#ifdef CPP_MPI
593	if (NbRequest > 0) call MPI_WAITALL(NbRequest,Request,Status,ierr)
594	#endif
595	IF (RecvUp) call Unpack_Data(Field(ij_begin-up*iip1,1),ij,ll,up,Buffer_Recv_up)
596	IF (RecvDown) call Unpack_Data(Field(ij_end+1,1),ij,ll,down,Buffer_Recv_down)
597
598	call VTe(VThallo)
599	call barrier
600
601	ENDIF ! using_mpi
602
603	RETURN
604
605	end subroutine exchange_Hallo
606
607
608	subroutine Gather_Field(Field,ij,ll,rank)
609	implicit none
610	#include "dimensions.h"
611	#include "paramet.h"
612	#include "iniprint.h"
613	#ifdef CPP_MPI
614	include 'mpif.h'
615	#endif
616	INTEGER :: ij,ll,rank
617	REAL, dimension(ij,ll) :: Field
618	REAL, dimension(:),allocatable :: Buffer_send
619	REAL, dimension(:),allocatable :: Buffer_Recv
620	INTEGER, dimension(0:MPI_Size-1) :: Recv_count, displ
621	INTEGER :: ierr
622	INTEGER ::i
623
624	IF (using_mpi) THEN
625
626	if (ij==ip1jmp1) then
627	allocate(Buffer_send(iip1ll(jj_end-jj_begin+1)))
628	call Pack_Data(Field(ij_begin,1),ij,ll,jj_end-jj_begin+1,Buffer_send)
629	else if (ij==ip1jm) then
630	allocate(Buffer_send(iip1ll(min(jj_end,jjm)-jj_begin+1)))
631	call Pack_Data(Field(ij_begin,1),ij,ll,min(jj_end,jjm)-jj_begin+1,Buffer_send)
632	else
633	write(lunout,*)ij
634	stop 'erreur dans Gather_Field'
635	endif
636
637	if (MPI_Rank==rank) then
638	allocate(Buffer_Recv(ij*ll))
639
640	!CDIR NOVECTOR
641	do i=0,MPI_Size-1
642
643	if (ij==ip1jmp1) then
644	Recv_count(i)=(jj_end_para(i)-jj_begin_para(i)+1)lliip1
645	else if (ij==ip1jm) then
646	Recv_count(i)=(min(jj_end_para(i),jjm)-jj_begin_para(i)+1)lliip1
647	else
648	stop 'erreur dans Gather_Field'
649	endif
650
651	if (i==0) then
652	displ(i)=0
653	else
654	displ(i)=displ(i-1)+Recv_count(i-1)
655	endif
656
657	enddo
658
659	else
660	! Ehouarn: When in debug mode, ifort complains (for call MPI_GATHERV
661	! below) about Buffer_Recv() being not allocated.
662	! So make a dummy allocation.
663	allocate(Buffer_Recv(1))
664	endif ! of if (MPI_Rank==rank)
665
666	!$OMP CRITICAL (MPI)
667	#ifdef CPP_MPI
668	call MPI_GATHERV(Buffer_send,(min(ij_end,ij)-ij_begin+1)*ll,MPI_REAL8, &
669	Buffer_Recv,Recv_count,displ,MPI_REAL8,rank,COMM_LMDZ,ierr)
670	#endif
671	!$OMP END CRITICAL (MPI)
672
673	if (MPI_Rank==rank) then
674
675	if (ij==ip1jmp1) then
676	do i=0,MPI_Size-1
677	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
678	jj_end_para(i)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
679	enddo
680	else if (ij==ip1jm) then
681	do i=0,MPI_Size-1
682	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
683	min(jj_end_para(i),jjm)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
684	enddo
685	endif
686	endif
687	ENDIF ! using_mpi
688
689	end subroutine Gather_Field
690
691
692	subroutine AllGather_Field(Field,ij,ll)
693	implicit none
694	#include "dimensions.h"
695	#include "paramet.h"
696	#ifdef CPP_MPI
697	include 'mpif.h'
698	#endif
699	INTEGER :: ij,ll
700	REAL, dimension(ij,ll) :: Field
701	INTEGER :: ierr
702
703	IF (using_mpi) THEN
704	call Gather_Field(Field,ij,ll,0)
705	!$OMP CRITICAL (MPI)
706	#ifdef CPP_MPI
707	call MPI_BCAST(Field,ij*ll,MPI_REAL8,0,COMM_LMDZ,ierr)
708	#endif
709	!$OMP END CRITICAL (MPI)
710	ENDIF
711
712	end subroutine AllGather_Field
713
714	subroutine Broadcast_Field(Field,ij,ll,rank)
715	implicit none
716	#include "dimensions.h"
717	#include "paramet.h"
718	#ifdef CPP_MPI
719	include 'mpif.h'
720	#endif
721	INTEGER :: ij,ll
722	REAL, dimension(ij,ll) :: Field
723	INTEGER :: rank
724	INTEGER :: ierr
725
726	IF (using_mpi) THEN
727
728	!$OMP CRITICAL (MPI)
729	#ifdef CPP_MPI
730	call MPI_BCAST(Field,ij*ll,MPI_REAL8,rank,COMM_LMDZ,ierr)
731	#endif
732	!$OMP END CRITICAL (MPI)
733
734	ENDIF
735	end subroutine Broadcast_Field
736
737
738	! Subroutine verif_hallo(Field,ij,ll,up,down)
739	! implicit none
740	!#include "dimensions.h"
741	!#include "paramet.h"
742	! include 'mpif.h'
743	!
744	! INTEGER :: ij,ll
745	! REAL, dimension(ij,ll) :: Field
746	! INTEGER :: up,down
747	!
748	! REAL,dimension(ij,ll): NewField
749	!
750	! NewField=0
751	!
752	! ijb=ij_begin
753	! ije=ij_end
754	! if (pole_nord)
755	! NewField(ij_be
756
757	end module parallel

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