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parallel_lmdz.F90 @ 1966

Last change on this file since 1966 was 1965, checked in by acaubel, 11 years ago
AC : Modified to run with Oasis-MCT as coupler in IPSLCM6 coupled configuration
Property copyright set to Name of program: LMDZ Creation date: 1984 Version: LMDZ5 License: CeCILL version 2 Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539 See the license file in the root directory
File size: 15.2 KB

Line
1	!
2	! $Id: parallel.F90 1810 2013-07-24 08:06:39Z emillour $
3	!
4	MODULE parallel_lmdz
5	USE mod_const_mpi
6	#ifdef CPP_IOIPSL
7	use IOIPSL, only: getin
8	#else
9	! if not using IOIPSL, we still need to use (a local version of) getin
10	use ioipsl_getincom, only: getin
11	#endif
12
13	LOGICAL,SAVE :: using_mpi=.TRUE.
14	LOGICAL,SAVE :: using_omp
15
16	integer, save :: mpi_size
17	integer, save :: mpi_rank
18	integer, save :: jj_begin
19	integer, save :: jj_end
20	integer, save :: jj_nb
21	integer, save :: ij_begin
22	integer, save :: ij_end
23	logical, save :: pole_nord
24	logical, save :: pole_sud
25
26	integer, allocatable, save, dimension(:) :: jj_begin_para
27	integer, allocatable, save, dimension(:) :: jj_end_para
28	integer, allocatable, save, dimension(:) :: jj_nb_para
29	integer, save :: OMP_CHUNK
30	integer, save :: omp_rank
31	integer, save :: omp_size
32	!$OMP THREADPRIVATE(omp_rank)
33
34	contains
35
36	subroutine init_parallel
37	USE vampir
38	implicit none
39	#ifdef CPP_MPI
40	include 'mpif.h'
41	#endif
42	#include "dimensions.h"
43	#include "paramet.h"
44	#include "iniprint.h"
45
46	integer :: ierr
47	integer :: i,j
48	integer :: type_size
49	integer, dimension(3) :: blocklen,type
50	integer :: comp_id
51	character(len=4) :: num
52	character(len=20) :: filename
53
54	#ifdef CPP_OMP
55	INTEGER :: OMP_GET_NUM_THREADS
56	EXTERNAL OMP_GET_NUM_THREADS
57	INTEGER :: OMP_GET_THREAD_NUM
58	EXTERNAL OMP_GET_THREAD_NUM
59	#endif
60
61	#ifdef CPP_MPI
62	using_mpi=.TRUE.
63	#else
64	using_mpi=.FALSE.
65	#endif
66
67
68	#ifdef CPP_OMP
69	using_OMP=.TRUE.
70	#else
71	using_OMP=.FALSE.
72	#endif
73
74	call InitVampir
75
76	IF (using_mpi) THEN
77	#ifdef CPP_MPI
78	call MPI_COMM_SIZE(COMM_LMDZ,mpi_size,ierr)
79	call MPI_COMM_RANK(COMM_LMDZ,mpi_rank,ierr)
80	#endif
81	ELSE
82	mpi_size=1
83	mpi_rank=0
84	ENDIF
85
86
87	! Open text output file with mpi_rank in suffix of file name
88	IF (lunout /= 5 .and. lunout /= 6) THEN
89	WRITE(num,'(I4.4)') mpi_rank
90	filename='lmdz.out_'//num
91	IF (mpi_rank .NE. 0) THEN
92	OPEN(UNIT=lunout,FILE=TRIM(filename),ACTION='write', &
93	STATUS='unknown',FORM='formatted',IOSTAT=ierr)
94	ENDIF
95	ENDIF
96
97
98	allocate(jj_begin_para(0:mpi_size-1))
99	allocate(jj_end_para(0:mpi_size-1))
100	allocate(jj_nb_para(0:mpi_size-1))
101
102	do i=0,mpi_size-1
103	jj_nb_para(i)=(jjm+1)/mpi_size
104	if ( i < MOD((jjm+1),mpi_size) ) jj_nb_para(i)=jj_nb_para(i)+1
105
106	if (jj_nb_para(i) <= 2 ) then
107
108	write(lunout,*)"Arret : le nombre de bande de lattitude par process est trop faible (<2)."
109	write(lunout,*)" ---> diminuez le nombre de CPU ou augmentez la taille en lattitude"
110
111	#ifdef CPP_MPI
112	IF (using_mpi) call MPI_ABORT(COMM_LMDZ,-1, ierr)
113	#endif
114	endif
115
116	enddo
117
118	! jj_nb_para(0)=11
119	! jj_nb_para(1)=25
120	! jj_nb_para(2)=25
121	! jj_nb_para(3)=12
122
123	j=1
124
125	do i=0,mpi_size-1
126
127	jj_begin_para(i)=j
128	jj_end_para(i)=j+jj_Nb_para(i)-1
129	j=j+jj_Nb_para(i)
130
131	enddo
132
133	jj_begin = jj_begin_para(mpi_rank)
134	jj_end = jj_end_para(mpi_rank)
135	jj_nb = jj_nb_para(mpi_rank)
136
137	ij_begin=(jj_begin-1)*iip1+1
138	ij_end=jj_end*iip1
139
140	if (mpi_rank.eq.0) then
141	pole_nord=.TRUE.
142	else
143	pole_nord=.FALSE.
144	endif
145
146	if (mpi_rank.eq.mpi_size-1) then
147	pole_sud=.TRUE.
148	else
149	pole_sud=.FALSE.
150	endif
151
152	write(lunout,*)"init_parallel: jj_begin",jj_begin
153	write(lunout,*)"init_parallel: jj_end",jj_end
154	write(lunout,*)"init_parallel: ij_begin",ij_begin
155	write(lunout,*)"init_parallel: ij_end",ij_end
156
157	!$OMP PARALLEL
158
159	#ifdef CPP_OMP
160	!$OMP MASTER
161	omp_size=OMP_GET_NUM_THREADS()
162	!$OMP END MASTER
163	!$OMP BARRIER
164	omp_rank=OMP_GET_THREAD_NUM()
165
166	!Config Key = omp_chunk
167	!Config Desc = taille des blocs openmp
168	!Config Def = 1
169	!Config Help = defini la taille des packets d'it�ration openmp
170	!Config distribue a chaque tache lors de l'entree dans une
171	!Config boucle parallelisee
172
173	!$OMP MASTER
174	omp_chunk=(llm+1)/omp_size
175	IF (MOD(llm+1,omp_size)/=0) omp_chunk=omp_chunk+1
176	CALL getin('omp_chunk',omp_chunk)
177	!$OMP END MASTER
178	!$OMP BARRIER
179	#else
180	omp_size=1
181	omp_rank=0
182	#endif
183	!$OMP END PARALLEL
184
185	end subroutine init_parallel
186
187
188	subroutine SetDistrib(jj_Nb_New)
189	implicit none
190
191	#include "dimensions.h"
192	#include "paramet.h"
193
194	INTEGER,dimension(0:MPI_Size-1) :: jj_Nb_New
195	INTEGER :: i
196
197	jj_Nb_Para=jj_Nb_New
198
199	jj_begin_para(0)=1
200	jj_end_para(0)=jj_Nb_Para(0)
201
202	do i=1,mpi_size-1
203
204	jj_begin_para(i)=jj_end_para(i-1)+1
205	jj_end_para(i)=jj_begin_para(i)+jj_Nb_para(i)-1
206
207	enddo
208
209	jj_begin = jj_begin_para(mpi_rank)
210	jj_end = jj_end_para(mpi_rank)
211	jj_nb = jj_nb_para(mpi_rank)
212
213	ij_begin=(jj_begin-1)*iip1+1
214	ij_end=jj_end*iip1
215
216	end subroutine SetDistrib
217
218
219
220
221	subroutine Finalize_parallel
222	#ifdef CPP_XIOS
223	! ug Pour les sorties XIOS
224	USE wxios
225	#endif
226	#ifdef CPP_COUPLE
227	! Use of Oasis-MCT coupler
228	#if defined CPP_OMCT
229	use mod_prism
230	#else
231	use mod_prism_proto
232	#endif
233	! Ehouarn: surface_data module is in 'phylmd' ...
234	use surface_data, only : type_ocean
235	implicit none
236	#else
237	implicit none
238	! without the surface_data module, we declare (and set) a dummy 'type_ocean'
239	character(len=6),parameter :: type_ocean="dummy"
240	#endif
241	! #endif of #ifdef CPP_EARTH
242
243	include "dimensions.h"
244	include "paramet.h"
245	#ifdef CPP_MPI
246	include 'mpif.h'
247	#endif
248
249	integer :: ierr
250	integer :: i
251
252	if (allocated(jj_begin_para)) deallocate(jj_begin_para)
253	if (allocated(jj_end_para)) deallocate(jj_end_para)
254	if (allocated(jj_nb_para)) deallocate(jj_nb_para)
255
256	if (type_ocean == 'couple') then
257	#ifdef CPP_COUPLE
258	call prism_terminate_proto(ierr)
259	IF (ierr .ne. PRISM_Ok) THEN
260	call abort_gcm('Finalize_parallel',' Probleme dans prism_terminate_proto ',1)
261	endif
262	#endif
263	else
264	#ifdef CPP_XIOS
265	!Fermeture propre de XIOS
266	CALL wxios_close()
267	#endif
268	#ifdef CPP_MPI
269	IF (using_mpi) call MPI_FINALIZE(ierr)
270	#endif
271	end if
272
273	end subroutine Finalize_parallel
274
275	subroutine Pack_Data(Field,ij,ll,row,Buffer)
276	implicit none
277
278	#include "dimensions.h"
279	#include "paramet.h"
280
281	integer, intent(in) :: ij,ll,row
282	real,dimension(ij,ll),intent(in) ::Field
283	real,dimension(lliip1row), intent(out) :: Buffer
284
285	integer :: Pos
286	integer :: i,l
287
288	Pos=0
289	do l=1,ll
290	do i=1,row*iip1
291	Pos=Pos+1
292	Buffer(Pos)=Field(i,l)
293	enddo
294	enddo
295
296	end subroutine Pack_data
297
298	subroutine Unpack_Data(Field,ij,ll,row,Buffer)
299	implicit none
300
301	#include "dimensions.h"
302	#include "paramet.h"
303
304	integer, intent(in) :: ij,ll,row
305	real,dimension(ij,ll),intent(out) ::Field
306	real,dimension(lliip1row), intent(in) :: Buffer
307
308	integer :: Pos
309	integer :: i,l
310
311	Pos=0
312
313	do l=1,ll
314	do i=1,row*iip1
315	Pos=Pos+1
316	Field(i,l)=Buffer(Pos)
317	enddo
318	enddo
319
320	end subroutine UnPack_data
321
322
323	SUBROUTINE barrier
324	IMPLICIT NONE
325	#ifdef CPP_MPI
326	INCLUDE 'mpif.h'
327	#endif
328	INTEGER :: ierr
329
330	!$OMP CRITICAL (MPI)
331	#ifdef CPP_MPI
332	IF (using_mpi) CALL MPI_Barrier(COMM_LMDZ,ierr)
333	#endif
334	!$OMP END CRITICAL (MPI)
335
336	END SUBROUTINE barrier
337
338
339	subroutine exchange_hallo(Field,ij,ll,up,down)
340	USE Vampir
341	implicit none
342	#include "dimensions.h"
343	#include "paramet.h"
344	#ifdef CPP_MPI
345	include 'mpif.h'
346	#endif
347	INTEGER :: ij,ll
348	REAL, dimension(ij,ll) :: Field
349	INTEGER :: up,down
350
351	INTEGER :: ierr
352	LOGICAL :: SendUp,SendDown
353	LOGICAL :: RecvUp,RecvDown
354	INTEGER, DIMENSION(4) :: Request
355	#ifdef CPP_MPI
356	INTEGER, DIMENSION(MPI_STATUS_SIZE,4) :: Status
357	#else
358	INTEGER, DIMENSION(1,4) :: Status
359	#endif
360	INTEGER :: NbRequest
361	REAL, dimension(:),allocatable :: Buffer_Send_up,Buffer_Send_down
362	REAL, dimension(:),allocatable :: Buffer_Recv_up,Buffer_Recv_down
363	INTEGER :: Buffer_size
364
365	IF (using_mpi) THEN
366
367	CALL barrier
368
369	call VTb(VThallo)
370
371	SendUp=.TRUE.
372	SendDown=.TRUE.
373	RecvUp=.TRUE.
374	RecvDown=.TRUE.
375
376	IF (pole_nord) THEN
377	SendUp=.FALSE.
378	RecvUp=.FALSE.
379	ENDIF
380
381	IF (pole_sud) THEN
382	SendDown=.FALSE.
383	RecvDown=.FALSE.
384	ENDIF
385
386	if (up.eq.0) then
387	SendDown=.FALSE.
388	RecvUp=.FALSE.
389	endif
390
391	if (down.eq.0) then
392	SendUp=.FALSE.
393	RecvDown=.FALSE.
394	endif
395
396	NbRequest=0
397
398	IF (SendUp) THEN
399	NbRequest=NbRequest+1
400	buffer_size=downiip1ll
401	allocate(Buffer_Send_up(Buffer_size))
402	call PACK_Data(Field(ij_begin,1),ij,ll,down,Buffer_Send_up)
403	!$OMP CRITICAL (MPI)
404	#ifdef CPP_MPI
405	call MPI_ISSEND(Buffer_send_up,Buffer_Size,MPI_REAL8,MPI_Rank-1,1, &
406	COMM_LMDZ,Request(NbRequest),ierr)
407	#endif
408	!$OMP END CRITICAL (MPI)
409	ENDIF
410
411	IF (SendDown) THEN
412	NbRequest=NbRequest+1
413
414	buffer_size=upiip1ll
415	allocate(Buffer_Send_down(Buffer_size))
416	call PACK_Data(Field(ij_end+1-up*iip1,1),ij,ll,up,Buffer_send_down)
417
418	!$OMP CRITICAL (MPI)
419	#ifdef CPP_MPI
420	call MPI_ISSEND(Buffer_send_down,Buffer_Size,MPI_REAL8,MPI_Rank+1,1, &
421	COMM_LMDZ,Request(NbRequest),ierr)
422	#endif
423	!$OMP END CRITICAL (MPI)
424	ENDIF
425
426
427	IF (RecvUp) THEN
428	NbRequest=NbRequest+1
429	buffer_size=upiip1ll
430	allocate(Buffer_recv_up(Buffer_size))
431
432	!$OMP CRITICAL (MPI)
433	#ifdef CPP_MPI
434	call MPI_IRECV(Buffer_recv_up,Buffer_size,MPI_REAL8,MPI_Rank-1,1, &
435	COMM_LMDZ,Request(NbRequest),ierr)
436	#endif
437	!$OMP END CRITICAL (MPI)
438
439
440	ENDIF
441
442	IF (RecvDown) THEN
443	NbRequest=NbRequest+1
444	buffer_size=downiip1ll
445	allocate(Buffer_recv_down(Buffer_size))
446
447	!$OMP CRITICAL (MPI)
448	#ifdef CPP_MPI
449	call MPI_IRECV(Buffer_recv_down,Buffer_size,MPI_REAL8,MPI_Rank+1,1, &
450	COMM_LMDZ,Request(NbRequest),ierr)
451	#endif
452	!$OMP END CRITICAL (MPI)
453
454	ENDIF
455
456	#ifdef CPP_MPI
457	if (NbRequest > 0) call MPI_WAITALL(NbRequest,Request,Status,ierr)
458	#endif
459	IF (RecvUp) call Unpack_Data(Field(ij_begin-up*iip1,1),ij,ll,up,Buffer_Recv_up)
460	IF (RecvDown) call Unpack_Data(Field(ij_end+1,1),ij,ll,down,Buffer_Recv_down)
461
462	call VTe(VThallo)
463	call barrier
464
465	ENDIF ! using_mpi
466
467	RETURN
468
469	end subroutine exchange_Hallo
470
471
472	subroutine Gather_Field(Field,ij,ll,rank)
473	implicit none
474	#include "dimensions.h"
475	#include "paramet.h"
476	#include "iniprint.h"
477	#ifdef CPP_MPI
478	include 'mpif.h'
479	#endif
480	INTEGER :: ij,ll,rank
481	REAL, dimension(ij,ll) :: Field
482	REAL, dimension(:),allocatable :: Buffer_send
483	REAL, dimension(:),allocatable :: Buffer_Recv
484	INTEGER, dimension(0:MPI_Size-1) :: Recv_count, displ
485	INTEGER :: ierr
486	INTEGER ::i
487
488	IF (using_mpi) THEN
489
490	if (ij==ip1jmp1) then
491	allocate(Buffer_send(iip1ll(jj_end-jj_begin+1)))
492	call Pack_Data(Field(ij_begin,1),ij,ll,jj_end-jj_begin+1,Buffer_send)
493	else if (ij==ip1jm) then
494	allocate(Buffer_send(iip1ll(min(jj_end,jjm)-jj_begin+1)))
495	call Pack_Data(Field(ij_begin,1),ij,ll,min(jj_end,jjm)-jj_begin+1,Buffer_send)
496	else
497	write(lunout,*)ij
498	stop 'erreur dans Gather_Field'
499	endif
500
501	if (MPI_Rank==rank) then
502	allocate(Buffer_Recv(ij*ll))
503
504	!CDIR NOVECTOR
505	do i=0,MPI_Size-1
506
507	if (ij==ip1jmp1) then
508	Recv_count(i)=(jj_end_para(i)-jj_begin_para(i)+1)lliip1
509	else if (ij==ip1jm) then
510	Recv_count(i)=(min(jj_end_para(i),jjm)-jj_begin_para(i)+1)lliip1
511	else
512	stop 'erreur dans Gather_Field'
513	endif
514
515	if (i==0) then
516	displ(i)=0
517	else
518	displ(i)=displ(i-1)+Recv_count(i-1)
519	endif
520
521	enddo
522
523	else
524	! Ehouarn: When in debug mode, ifort complains (for call MPI_GATHERV
525	! below) about Buffer_Recv() being not allocated.
526	! So make a dummy allocation.
527	allocate(Buffer_Recv(1))
528	endif ! of if (MPI_Rank==rank)
529
530	!$OMP CRITICAL (MPI)
531	#ifdef CPP_MPI
532	call MPI_GATHERV(Buffer_send,(min(ij_end,ij)-ij_begin+1)*ll,MPI_REAL8, &
533	Buffer_Recv,Recv_count,displ,MPI_REAL8,rank,COMM_LMDZ,ierr)
534	#endif
535	!$OMP END CRITICAL (MPI)
536
537	if (MPI_Rank==rank) then
538
539	if (ij==ip1jmp1) then
540	do i=0,MPI_Size-1
541	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
542	jj_end_para(i)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
543	enddo
544	else if (ij==ip1jm) then
545	do i=0,MPI_Size-1
546	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
547	min(jj_end_para(i),jjm)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
548	enddo
549	endif
550	endif
551	ENDIF ! using_mpi
552
553	end subroutine Gather_Field
554
555
556	subroutine AllGather_Field(Field,ij,ll)
557	implicit none
558	#include "dimensions.h"
559	#include "paramet.h"
560	#ifdef CPP_MPI
561	include 'mpif.h'
562	#endif
563	INTEGER :: ij,ll
564	REAL, dimension(ij,ll) :: Field
565	INTEGER :: ierr
566
567	IF (using_mpi) THEN
568	call Gather_Field(Field,ij,ll,0)
569	!$OMP CRITICAL (MPI)
570	#ifdef CPP_MPI
571	call MPI_BCAST(Field,ij*ll,MPI_REAL8,0,COMM_LMDZ,ierr)
572	#endif
573	!$OMP END CRITICAL (MPI)
574	ENDIF
575
576	end subroutine AllGather_Field
577
578	subroutine Broadcast_Field(Field,ij,ll,rank)
579	implicit none
580	#include "dimensions.h"
581	#include "paramet.h"
582	#ifdef CPP_MPI
583	include 'mpif.h'
584	#endif
585	INTEGER :: ij,ll
586	REAL, dimension(ij,ll) :: Field
587	INTEGER :: rank
588	INTEGER :: ierr
589
590	IF (using_mpi) THEN
591
592	!$OMP CRITICAL (MPI)
593	#ifdef CPP_MPI
594	call MPI_BCAST(Field,ij*ll,MPI_REAL8,rank,COMM_LMDZ,ierr)
595	#endif
596	!$OMP END CRITICAL (MPI)
597
598	ENDIF
599	end subroutine Broadcast_Field
600
601
602	! Subroutine verif_hallo(Field,ij,ll,up,down)
603	! implicit none
604	!#include "dimensions.h"
605	!#include "paramet.h"
606	! include 'mpif.h'
607	!
608	! INTEGER :: ij,ll
609	! REAL, dimension(ij,ll) :: Field
610	! INTEGER :: up,down
611	!
612	! REAL,dimension(ij,ll): NewField
613	!
614	! NewField=0
615	!
616	! ijb=ij_begin
617	! ije=ij_end
618	! if (pole_nord)
619	! NewField(ij_be
620
621	end MODULE parallel_lmdz

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