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parallel_lmdz.F90 @ 2871

Last change on this file since 2871 was 2056, checked in by Laurent Fairhead, 10 years ago
Merged trunk changes r1997:2055 into testing branch
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: 15.3 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_XIOS
258	!Fermeture propre de XIOS
259	CALL wxios_close()
260	#else
261	#ifdef CPP_COUPLE
262	call prism_terminate_proto(ierr)
263	IF (ierr .ne. PRISM_Ok) THEN
264	call abort_gcm('Finalize_parallel',' Probleme dans prism_terminate_proto ',1)
265	endif
266	#endif
267	#endif
268	else
269	#ifdef CPP_XIOS
270	!Fermeture propre de XIOS
271	CALL wxios_close()
272	#endif
273	#ifdef CPP_MPI
274	IF (using_mpi) call MPI_FINALIZE(ierr)
275	#endif
276	end if
277
278	end subroutine Finalize_parallel
279
280	subroutine Pack_Data(Field,ij,ll,row,Buffer)
281	implicit none
282
283	#include "dimensions.h"
284	#include "paramet.h"
285
286	integer, intent(in) :: ij,ll,row
287	real,dimension(ij,ll),intent(in) ::Field
288	real,dimension(lliip1row), intent(out) :: Buffer
289
290	integer :: Pos
291	integer :: i,l
292
293	Pos=0
294	do l=1,ll
295	do i=1,row*iip1
296	Pos=Pos+1
297	Buffer(Pos)=Field(i,l)
298	enddo
299	enddo
300
301	end subroutine Pack_data
302
303	subroutine Unpack_Data(Field,ij,ll,row,Buffer)
304	implicit none
305
306	#include "dimensions.h"
307	#include "paramet.h"
308
309	integer, intent(in) :: ij,ll,row
310	real,dimension(ij,ll),intent(out) ::Field
311	real,dimension(lliip1row), intent(in) :: Buffer
312
313	integer :: Pos
314	integer :: i,l
315
316	Pos=0
317
318	do l=1,ll
319	do i=1,row*iip1
320	Pos=Pos+1
321	Field(i,l)=Buffer(Pos)
322	enddo
323	enddo
324
325	end subroutine UnPack_data
326
327
328	SUBROUTINE barrier
329	IMPLICIT NONE
330	#ifdef CPP_MPI
331	INCLUDE 'mpif.h'
332	#endif
333	INTEGER :: ierr
334
335	!$OMP CRITICAL (MPI)
336	#ifdef CPP_MPI
337	IF (using_mpi) CALL MPI_Barrier(COMM_LMDZ,ierr)
338	#endif
339	!$OMP END CRITICAL (MPI)
340
341	END SUBROUTINE barrier
342
343
344	subroutine exchange_hallo(Field,ij,ll,up,down)
345	USE Vampir
346	implicit none
347	#include "dimensions.h"
348	#include "paramet.h"
349	#ifdef CPP_MPI
350	include 'mpif.h'
351	#endif
352	INTEGER :: ij,ll
353	REAL, dimension(ij,ll) :: Field
354	INTEGER :: up,down
355
356	INTEGER :: ierr
357	LOGICAL :: SendUp,SendDown
358	LOGICAL :: RecvUp,RecvDown
359	INTEGER, DIMENSION(4) :: Request
360	#ifdef CPP_MPI
361	INTEGER, DIMENSION(MPI_STATUS_SIZE,4) :: Status
362	#else
363	INTEGER, DIMENSION(1,4) :: Status
364	#endif
365	INTEGER :: NbRequest
366	REAL, dimension(:),allocatable :: Buffer_Send_up,Buffer_Send_down
367	REAL, dimension(:),allocatable :: Buffer_Recv_up,Buffer_Recv_down
368	INTEGER :: Buffer_size
369
370	IF (using_mpi) THEN
371
372	CALL barrier
373
374	call VTb(VThallo)
375
376	SendUp=.TRUE.
377	SendDown=.TRUE.
378	RecvUp=.TRUE.
379	RecvDown=.TRUE.
380
381	IF (pole_nord) THEN
382	SendUp=.FALSE.
383	RecvUp=.FALSE.
384	ENDIF
385
386	IF (pole_sud) THEN
387	SendDown=.FALSE.
388	RecvDown=.FALSE.
389	ENDIF
390
391	if (up.eq.0) then
392	SendDown=.FALSE.
393	RecvUp=.FALSE.
394	endif
395
396	if (down.eq.0) then
397	SendUp=.FALSE.
398	RecvDown=.FALSE.
399	endif
400
401	NbRequest=0
402
403	IF (SendUp) THEN
404	NbRequest=NbRequest+1
405	buffer_size=downiip1ll
406	allocate(Buffer_Send_up(Buffer_size))
407	call PACK_Data(Field(ij_begin,1),ij,ll,down,Buffer_Send_up)
408	!$OMP CRITICAL (MPI)
409	#ifdef CPP_MPI
410	call MPI_ISSEND(Buffer_send_up,Buffer_Size,MPI_REAL8,MPI_Rank-1,1, &
411	COMM_LMDZ,Request(NbRequest),ierr)
412	#endif
413	!$OMP END CRITICAL (MPI)
414	ENDIF
415
416	IF (SendDown) THEN
417	NbRequest=NbRequest+1
418
419	buffer_size=upiip1ll
420	allocate(Buffer_Send_down(Buffer_size))
421	call PACK_Data(Field(ij_end+1-up*iip1,1),ij,ll,up,Buffer_send_down)
422
423	!$OMP CRITICAL (MPI)
424	#ifdef CPP_MPI
425	call MPI_ISSEND(Buffer_send_down,Buffer_Size,MPI_REAL8,MPI_Rank+1,1, &
426	COMM_LMDZ,Request(NbRequest),ierr)
427	#endif
428	!$OMP END CRITICAL (MPI)
429	ENDIF
430
431
432	IF (RecvUp) THEN
433	NbRequest=NbRequest+1
434	buffer_size=upiip1ll
435	allocate(Buffer_recv_up(Buffer_size))
436
437	!$OMP CRITICAL (MPI)
438	#ifdef CPP_MPI
439	call MPI_IRECV(Buffer_recv_up,Buffer_size,MPI_REAL8,MPI_Rank-1,1, &
440	COMM_LMDZ,Request(NbRequest),ierr)
441	#endif
442	!$OMP END CRITICAL (MPI)
443
444
445	ENDIF
446
447	IF (RecvDown) THEN
448	NbRequest=NbRequest+1
449	buffer_size=downiip1ll
450	allocate(Buffer_recv_down(Buffer_size))
451
452	!$OMP CRITICAL (MPI)
453	#ifdef CPP_MPI
454	call MPI_IRECV(Buffer_recv_down,Buffer_size,MPI_REAL8,MPI_Rank+1,1, &
455	COMM_LMDZ,Request(NbRequest),ierr)
456	#endif
457	!$OMP END CRITICAL (MPI)
458
459	ENDIF
460
461	#ifdef CPP_MPI
462	if (NbRequest > 0) call MPI_WAITALL(NbRequest,Request,Status,ierr)
463	#endif
464	IF (RecvUp) call Unpack_Data(Field(ij_begin-up*iip1,1),ij,ll,up,Buffer_Recv_up)
465	IF (RecvDown) call Unpack_Data(Field(ij_end+1,1),ij,ll,down,Buffer_Recv_down)
466
467	call VTe(VThallo)
468	call barrier
469
470	ENDIF ! using_mpi
471
472	RETURN
473
474	end subroutine exchange_Hallo
475
476
477	subroutine Gather_Field(Field,ij,ll,rank)
478	implicit none
479	#include "dimensions.h"
480	#include "paramet.h"
481	#include "iniprint.h"
482	#ifdef CPP_MPI
483	include 'mpif.h'
484	#endif
485	INTEGER :: ij,ll,rank
486	REAL, dimension(ij,ll) :: Field
487	REAL, dimension(:),allocatable :: Buffer_send
488	REAL, dimension(:),allocatable :: Buffer_Recv
489	INTEGER, dimension(0:MPI_Size-1) :: Recv_count, displ
490	INTEGER :: ierr
491	INTEGER ::i
492
493	IF (using_mpi) THEN
494
495	if (ij==ip1jmp1) then
496	allocate(Buffer_send(iip1ll(jj_end-jj_begin+1)))
497	call Pack_Data(Field(ij_begin,1),ij,ll,jj_end-jj_begin+1,Buffer_send)
498	else if (ij==ip1jm) then
499	allocate(Buffer_send(iip1ll(min(jj_end,jjm)-jj_begin+1)))
500	call Pack_Data(Field(ij_begin,1),ij,ll,min(jj_end,jjm)-jj_begin+1,Buffer_send)
501	else
502	write(lunout,*)ij
503	stop 'erreur dans Gather_Field'
504	endif
505
506	if (MPI_Rank==rank) then
507	allocate(Buffer_Recv(ij*ll))
508
509	!CDIR NOVECTOR
510	do i=0,MPI_Size-1
511
512	if (ij==ip1jmp1) then
513	Recv_count(i)=(jj_end_para(i)-jj_begin_para(i)+1)lliip1
514	else if (ij==ip1jm) then
515	Recv_count(i)=(min(jj_end_para(i),jjm)-jj_begin_para(i)+1)lliip1
516	else
517	stop 'erreur dans Gather_Field'
518	endif
519
520	if (i==0) then
521	displ(i)=0
522	else
523	displ(i)=displ(i-1)+Recv_count(i-1)
524	endif
525
526	enddo
527
528	else
529	! Ehouarn: When in debug mode, ifort complains (for call MPI_GATHERV
530	! below) about Buffer_Recv() being not allocated.
531	! So make a dummy allocation.
532	allocate(Buffer_Recv(1))
533	endif ! of if (MPI_Rank==rank)
534
535	!$OMP CRITICAL (MPI)
536	#ifdef CPP_MPI
537	call MPI_GATHERV(Buffer_send,(min(ij_end,ij)-ij_begin+1)*ll,MPI_REAL8, &
538	Buffer_Recv,Recv_count,displ,MPI_REAL8,rank,COMM_LMDZ,ierr)
539	#endif
540	!$OMP END CRITICAL (MPI)
541
542	if (MPI_Rank==rank) then
543
544	if (ij==ip1jmp1) then
545	do i=0,MPI_Size-1
546	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
547	jj_end_para(i)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
548	enddo
549	else if (ij==ip1jm) then
550	do i=0,MPI_Size-1
551	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
552	min(jj_end_para(i),jjm)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
553	enddo
554	endif
555	endif
556	ENDIF ! using_mpi
557
558	end subroutine Gather_Field
559
560
561	subroutine AllGather_Field(Field,ij,ll)
562	implicit none
563	#include "dimensions.h"
564	#include "paramet.h"
565	#ifdef CPP_MPI
566	include 'mpif.h'
567	#endif
568	INTEGER :: ij,ll
569	REAL, dimension(ij,ll) :: Field
570	INTEGER :: ierr
571
572	IF (using_mpi) THEN
573	call Gather_Field(Field,ij,ll,0)
574	!$OMP CRITICAL (MPI)
575	#ifdef CPP_MPI
576	call MPI_BCAST(Field,ij*ll,MPI_REAL8,0,COMM_LMDZ,ierr)
577	#endif
578	!$OMP END CRITICAL (MPI)
579	ENDIF
580
581	end subroutine AllGather_Field
582
583	subroutine Broadcast_Field(Field,ij,ll,rank)
584	implicit none
585	#include "dimensions.h"
586	#include "paramet.h"
587	#ifdef CPP_MPI
588	include 'mpif.h'
589	#endif
590	INTEGER :: ij,ll
591	REAL, dimension(ij,ll) :: Field
592	INTEGER :: rank
593	INTEGER :: ierr
594
595	IF (using_mpi) THEN
596
597	!$OMP CRITICAL (MPI)
598	#ifdef CPP_MPI
599	call MPI_BCAST(Field,ij*ll,MPI_REAL8,rank,COMM_LMDZ,ierr)
600	#endif
601	!$OMP END CRITICAL (MPI)
602
603	ENDIF
604	end subroutine Broadcast_Field
605
606
607	! Subroutine verif_hallo(Field,ij,ll,up,down)
608	! implicit none
609	!#include "dimensions.h"
610	!#include "paramet.h"
611	! include 'mpif.h'
612	!
613	! INTEGER :: ij,ll
614	! REAL, dimension(ij,ll) :: Field
615	! INTEGER :: up,down
616	!
617	! REAL,dimension(ij,ll): NewField
618	!
619	! NewField=0
620	!
621	! ijb=ij_begin
622	! ije=ij_end
623	! if (pole_nord)
624	! NewField(ij_be
625
626	end MODULE parallel_lmdz

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