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parallel.F90 @ 1786

Last change on this file since 1786 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
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 14.4 KB

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1	!
2	! $Id: parallel.F90 1678 2012-11-12 07:58:29Z idelkadi $
3	!
4	module parallel
5	USE mod_const_mpi
6
7	LOGICAL,SAVE :: using_mpi=.TRUE.
8	LOGICAL,SAVE :: using_omp
9
10	integer, save :: mpi_size
11	integer, save :: mpi_rank
12	integer, save :: jj_begin
13	integer, save :: jj_end
14	integer, save :: jj_nb
15	integer, save :: ij_begin
16	integer, save :: ij_end
17	logical, save :: pole_nord
18	logical, save :: pole_sud
19
20	integer, allocatable, save, dimension(:) :: jj_begin_para
21	integer, allocatable, save, dimension(:) :: jj_end_para
22	integer, allocatable, save, dimension(:) :: jj_nb_para
23	integer, save :: OMP_CHUNK
24	integer, save :: omp_rank
25	integer, save :: omp_size
26	!$OMP THREADPRIVATE(omp_rank)
27
28	contains
29
30	subroutine init_parallel
31	USE vampir
32	implicit none
33	#ifdef CPP_MPI
34	include 'mpif.h'
35	#endif
36	#include "dimensions.h"
37	#include "paramet.h"
38	#include "iniprint.h"
39
40	integer :: ierr
41	integer :: i,j
42	integer :: type_size
43	integer, dimension(3) :: blocklen,type
44	integer :: comp_id
45	character(len=4) :: num
46	character(len=20) :: filename
47
48	#ifdef CPP_OMP
49	INTEGER :: OMP_GET_NUM_THREADS
50	EXTERNAL OMP_GET_NUM_THREADS
51	INTEGER :: OMP_GET_THREAD_NUM
52	EXTERNAL OMP_GET_THREAD_NUM
53	#endif
54
55	#ifdef CPP_MPI
56	using_mpi=.TRUE.
57	#else
58	using_mpi=.FALSE.
59	#endif
60
61
62	#ifdef CPP_OMP
63	using_OMP=.TRUE.
64	#else
65	using_OMP=.FALSE.
66	#endif
67
68	call InitVampir
69
70	IF (using_mpi) THEN
71	#ifdef CPP_MPI
72	call MPI_COMM_SIZE(COMM_LMDZ,mpi_size,ierr)
73	call MPI_COMM_RANK(COMM_LMDZ,mpi_rank,ierr)
74	#endif
75	ELSE
76	mpi_size=1
77	mpi_rank=0
78	ENDIF
79
80
81	! Open text output file with mpi_rank in suffix of file name
82	IF (lunout /= 5 .and. lunout /= 6) THEN
83	WRITE(num,'(I4.4)') mpi_rank
84	filename='lmdz.out_'//num
85	IF (mpi_rank .NE. 0) THEN
86	OPEN(UNIT=lunout,FILE=TRIM(filename),ACTION='write', &
87	STATUS='unknown',FORM='formatted',IOSTAT=ierr)
88	ENDIF
89	ENDIF
90
91
92	allocate(jj_begin_para(0:mpi_size-1))
93	allocate(jj_end_para(0:mpi_size-1))
94	allocate(jj_nb_para(0:mpi_size-1))
95
96	do i=0,mpi_size-1
97	jj_nb_para(i)=(jjm+1)/mpi_size
98	if ( i < MOD((jjm+1),mpi_size) ) jj_nb_para(i)=jj_nb_para(i)+1
99
100	if (jj_nb_para(i) <= 2 ) then
101
102	write(lunout,*)"Arret : le nombre de bande de lattitude par process est trop faible (<2)."
103	write(lunout,*)" ---> diminuez le nombre de CPU ou augmentez la taille en lattitude"
104
105	#ifdef CPP_MPI
106	IF (using_mpi) call MPI_ABORT(COMM_LMDZ,-1, ierr)
107	#endif
108	endif
109
110	enddo
111
112	! jj_nb_para(0)=11
113	! jj_nb_para(1)=25
114	! jj_nb_para(2)=25
115	! jj_nb_para(3)=12
116
117	j=1
118
119	do i=0,mpi_size-1
120
121	jj_begin_para(i)=j
122	jj_end_para(i)=j+jj_Nb_para(i)-1
123	j=j+jj_Nb_para(i)
124
125	enddo
126
127	jj_begin = jj_begin_para(mpi_rank)
128	jj_end = jj_end_para(mpi_rank)
129	jj_nb = jj_nb_para(mpi_rank)
130
131	ij_begin=(jj_begin-1)*iip1+1
132	ij_end=jj_end*iip1
133
134	if (mpi_rank.eq.0) then
135	pole_nord=.TRUE.
136	else
137	pole_nord=.FALSE.
138	endif
139
140	if (mpi_rank.eq.mpi_size-1) then
141	pole_sud=.TRUE.
142	else
143	pole_sud=.FALSE.
144	endif
145
146	write(lunout,*)"init_parallel: jj_begin",jj_begin
147	write(lunout,*)"init_parallel: jj_end",jj_end
148	write(lunout,*)"init_parallel: ij_begin",ij_begin
149	write(lunout,*)"init_parallel: ij_end",ij_end
150
151	!$OMP PARALLEL
152
153	#ifdef CPP_OMP
154	!$OMP MASTER
155	omp_size=OMP_GET_NUM_THREADS()
156	!$OMP END MASTER
157	omp_rank=OMP_GET_THREAD_NUM()
158	#else
159	omp_size=1
160	omp_rank=0
161	#endif
162	!$OMP END PARALLEL
163
164	end subroutine init_parallel
165
166
167	subroutine SetDistrib(jj_Nb_New)
168	implicit none
169
170	#include "dimensions.h"
171	#include "paramet.h"
172
173	INTEGER,dimension(0:MPI_Size-1) :: jj_Nb_New
174	INTEGER :: i
175
176	jj_Nb_Para=jj_Nb_New
177
178	jj_begin_para(0)=1
179	jj_end_para(0)=jj_Nb_Para(0)
180
181	do i=1,mpi_size-1
182
183	jj_begin_para(i)=jj_end_para(i-1)+1
184	jj_end_para(i)=jj_begin_para(i)+jj_Nb_para(i)-1
185
186	enddo
187
188	jj_begin = jj_begin_para(mpi_rank)
189	jj_end = jj_end_para(mpi_rank)
190	jj_nb = jj_nb_para(mpi_rank)
191
192	ij_begin=(jj_begin-1)*iip1+1
193	ij_end=jj_end*iip1
194
195	end subroutine SetDistrib
196
197
198
199
200	subroutine Finalize_parallel
201	#ifdef CPP_COUPLE
202	use mod_prism_proto
203	#endif
204	#ifdef CPP_EARTH
205	! Ehouarn: surface_data module is in 'phylmd' ...
206	use surface_data, only : type_ocean
207	implicit none
208	#else
209	implicit none
210	! without the surface_data module, we declare (and set) a dummy 'type_ocean'
211	character(len=6),parameter :: type_ocean="dummy"
212	#endif
213	! #endif of #ifdef CPP_EARTH
214
215	include "dimensions.h"
216	include "paramet.h"
217	#ifdef CPP_MPI
218	include 'mpif.h'
219	#endif
220
221	integer :: ierr
222	integer :: i
223
224	if (allocated(jj_begin_para)) deallocate(jj_begin_para)
225	if (allocated(jj_end_para)) deallocate(jj_end_para)
226	if (allocated(jj_nb_para)) deallocate(jj_nb_para)
227
228	if (type_ocean == 'couple') then
229	#ifdef CPP_COUPLE
230	call prism_terminate_proto(ierr)
231	IF (ierr .ne. PRISM_Ok) THEN
232	call abort_gcm('Finalize_parallel',' Probleme dans prism_terminate_proto ',1)
233	endif
234	#endif
235	else
236	#ifdef CPP_MPI
237	IF (using_mpi) call MPI_FINALIZE(ierr)
238	#endif
239	end if
240
241	end subroutine Finalize_parallel
242
243	subroutine Pack_Data(Field,ij,ll,row,Buffer)
244	implicit none
245
246	#include "dimensions.h"
247	#include "paramet.h"
248
249	integer, intent(in) :: ij,ll,row
250	real,dimension(ij,ll),intent(in) ::Field
251	real,dimension(lliip1row), intent(out) :: Buffer
252
253	integer :: Pos
254	integer :: i,l
255
256	Pos=0
257	do l=1,ll
258	do i=1,row*iip1
259	Pos=Pos+1
260	Buffer(Pos)=Field(i,l)
261	enddo
262	enddo
263
264	end subroutine Pack_data
265
266	subroutine Unpack_Data(Field,ij,ll,row,Buffer)
267	implicit none
268
269	#include "dimensions.h"
270	#include "paramet.h"
271
272	integer, intent(in) :: ij,ll,row
273	real,dimension(ij,ll),intent(out) ::Field
274	real,dimension(lliip1row), intent(in) :: Buffer
275
276	integer :: Pos
277	integer :: i,l
278
279	Pos=0
280
281	do l=1,ll
282	do i=1,row*iip1
283	Pos=Pos+1
284	Field(i,l)=Buffer(Pos)
285	enddo
286	enddo
287
288	end subroutine UnPack_data
289
290
291	SUBROUTINE barrier
292	IMPLICIT NONE
293	#ifdef CPP_MPI
294	INCLUDE 'mpif.h'
295	#endif
296	INTEGER :: ierr
297
298	!$OMP CRITICAL (MPI)
299	#ifdef CPP_MPI
300	IF (using_mpi) CALL MPI_Barrier(COMM_LMDZ,ierr)
301	#endif
302	!$OMP END CRITICAL (MPI)
303
304	END SUBROUTINE barrier
305
306
307	subroutine exchange_hallo(Field,ij,ll,up,down)
308	USE Vampir
309	implicit none
310	#include "dimensions.h"
311	#include "paramet.h"
312	#ifdef CPP_MPI
313	include 'mpif.h'
314	#endif
315	INTEGER :: ij,ll
316	REAL, dimension(ij,ll) :: Field
317	INTEGER :: up,down
318
319	INTEGER :: ierr
320	LOGICAL :: SendUp,SendDown
321	LOGICAL :: RecvUp,RecvDown
322	INTEGER, DIMENSION(4) :: Request
323	#ifdef CPP_MPI
324	INTEGER, DIMENSION(MPI_STATUS_SIZE,4) :: Status
325	#else
326	INTEGER, DIMENSION(1,4) :: Status
327	#endif
328	INTEGER :: NbRequest
329	REAL, dimension(:),allocatable :: Buffer_Send_up,Buffer_Send_down
330	REAL, dimension(:),allocatable :: Buffer_Recv_up,Buffer_Recv_down
331	INTEGER :: Buffer_size
332
333	IF (using_mpi) THEN
334
335	CALL barrier
336
337	call VTb(VThallo)
338
339	SendUp=.TRUE.
340	SendDown=.TRUE.
341	RecvUp=.TRUE.
342	RecvDown=.TRUE.
343
344	IF (pole_nord) THEN
345	SendUp=.FALSE.
346	RecvUp=.FALSE.
347	ENDIF
348
349	IF (pole_sud) THEN
350	SendDown=.FALSE.
351	RecvDown=.FALSE.
352	ENDIF
353
354	if (up.eq.0) then
355	SendDown=.FALSE.
356	RecvUp=.FALSE.
357	endif
358
359	if (down.eq.0) then
360	SendUp=.FALSE.
361	RecvDown=.FALSE.
362	endif
363
364	NbRequest=0
365
366	IF (SendUp) THEN
367	NbRequest=NbRequest+1
368	buffer_size=downiip1ll
369	allocate(Buffer_Send_up(Buffer_size))
370	call PACK_Data(Field(ij_begin,1),ij,ll,down,Buffer_Send_up)
371	!$OMP CRITICAL (MPI)
372	#ifdef CPP_MPI
373	call MPI_ISSEND(Buffer_send_up,Buffer_Size,MPI_REAL8,MPI_Rank-1,1, &
374	COMM_LMDZ,Request(NbRequest),ierr)
375	#endif
376	!$OMP END CRITICAL (MPI)
377	ENDIF
378
379	IF (SendDown) THEN
380	NbRequest=NbRequest+1
381
382	buffer_size=upiip1ll
383	allocate(Buffer_Send_down(Buffer_size))
384	call PACK_Data(Field(ij_end+1-up*iip1,1),ij,ll,up,Buffer_send_down)
385
386	!$OMP CRITICAL (MPI)
387	#ifdef CPP_MPI
388	call MPI_ISSEND(Buffer_send_down,Buffer_Size,MPI_REAL8,MPI_Rank+1,1, &
389	COMM_LMDZ,Request(NbRequest),ierr)
390	#endif
391	!$OMP END CRITICAL (MPI)
392	ENDIF
393
394
395	IF (RecvUp) THEN
396	NbRequest=NbRequest+1
397	buffer_size=upiip1ll
398	allocate(Buffer_recv_up(Buffer_size))
399
400	!$OMP CRITICAL (MPI)
401	#ifdef CPP_MPI
402	call MPI_IRECV(Buffer_recv_up,Buffer_size,MPI_REAL8,MPI_Rank-1,1, &
403	COMM_LMDZ,Request(NbRequest),ierr)
404	#endif
405	!$OMP END CRITICAL (MPI)
406
407
408	ENDIF
409
410	IF (RecvDown) THEN
411	NbRequest=NbRequest+1
412	buffer_size=downiip1ll
413	allocate(Buffer_recv_down(Buffer_size))
414
415	!$OMP CRITICAL (MPI)
416	#ifdef CPP_MPI
417	call MPI_IRECV(Buffer_recv_down,Buffer_size,MPI_REAL8,MPI_Rank+1,1, &
418	COMM_LMDZ,Request(NbRequest),ierr)
419	#endif
420	!$OMP END CRITICAL (MPI)
421
422	ENDIF
423
424	#ifdef CPP_MPI
425	if (NbRequest > 0) call MPI_WAITALL(NbRequest,Request,Status,ierr)
426	#endif
427	IF (RecvUp) call Unpack_Data(Field(ij_begin-up*iip1,1),ij,ll,up,Buffer_Recv_up)
428	IF (RecvDown) call Unpack_Data(Field(ij_end+1,1),ij,ll,down,Buffer_Recv_down)
429
430	call VTe(VThallo)
431	call barrier
432
433	ENDIF ! using_mpi
434
435	RETURN
436
437	end subroutine exchange_Hallo
438
439
440	subroutine Gather_Field(Field,ij,ll,rank)
441	implicit none
442	#include "dimensions.h"
443	#include "paramet.h"
444	#include "iniprint.h"
445	#ifdef CPP_MPI
446	include 'mpif.h'
447	#endif
448	INTEGER :: ij,ll,rank
449	REAL, dimension(ij,ll) :: Field
450	REAL, dimension(:),allocatable :: Buffer_send
451	REAL, dimension(:),allocatable :: Buffer_Recv
452	INTEGER, dimension(0:MPI_Size-1) :: Recv_count, displ
453	INTEGER :: ierr
454	INTEGER ::i
455
456	IF (using_mpi) THEN
457
458	if (ij==ip1jmp1) then
459	allocate(Buffer_send(iip1ll(jj_end-jj_begin+1)))
460	call Pack_Data(Field(ij_begin,1),ij,ll,jj_end-jj_begin+1,Buffer_send)
461	else if (ij==ip1jm) then
462	allocate(Buffer_send(iip1ll(min(jj_end,jjm)-jj_begin+1)))
463	call Pack_Data(Field(ij_begin,1),ij,ll,min(jj_end,jjm)-jj_begin+1,Buffer_send)
464	else
465	write(lunout,*)ij
466	stop 'erreur dans Gather_Field'
467	endif
468
469	if (MPI_Rank==rank) then
470	allocate(Buffer_Recv(ij*ll))
471
472	!CDIR NOVECTOR
473	do i=0,MPI_Size-1
474
475	if (ij==ip1jmp1) then
476	Recv_count(i)=(jj_end_para(i)-jj_begin_para(i)+1)lliip1
477	else if (ij==ip1jm) then
478	Recv_count(i)=(min(jj_end_para(i),jjm)-jj_begin_para(i)+1)lliip1
479	else
480	stop 'erreur dans Gather_Field'
481	endif
482
483	if (i==0) then
484	displ(i)=0
485	else
486	displ(i)=displ(i-1)+Recv_count(i-1)
487	endif
488
489	enddo
490
491	else
492	! Ehouarn: When in debug mode, ifort complains (for call MPI_GATHERV
493	! below) about Buffer_Recv() being not allocated.
494	! So make a dummy allocation.
495	allocate(Buffer_Recv(1))
496	endif ! of if (MPI_Rank==rank)
497
498	!$OMP CRITICAL (MPI)
499	#ifdef CPP_MPI
500	call MPI_GATHERV(Buffer_send,(min(ij_end,ij)-ij_begin+1)*ll,MPI_REAL8, &
501	Buffer_Recv,Recv_count,displ,MPI_REAL8,rank,COMM_LMDZ,ierr)
502	#endif
503	!$OMP END CRITICAL (MPI)
504
505	if (MPI_Rank==rank) then
506
507	if (ij==ip1jmp1) then
508	do i=0,MPI_Size-1
509	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
510	jj_end_para(i)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
511	enddo
512	else if (ij==ip1jm) then
513	do i=0,MPI_Size-1
514	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
515	min(jj_end_para(i),jjm)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
516	enddo
517	endif
518	endif
519	ENDIF ! using_mpi
520
521	end subroutine Gather_Field
522
523
524	subroutine AllGather_Field(Field,ij,ll)
525	implicit none
526	#include "dimensions.h"
527	#include "paramet.h"
528	#ifdef CPP_MPI
529	include 'mpif.h'
530	#endif
531	INTEGER :: ij,ll
532	REAL, dimension(ij,ll) :: Field
533	INTEGER :: ierr
534
535	IF (using_mpi) THEN
536	call Gather_Field(Field,ij,ll,0)
537	!$OMP CRITICAL (MPI)
538	#ifdef CPP_MPI
539	call MPI_BCAST(Field,ij*ll,MPI_REAL8,0,COMM_LMDZ,ierr)
540	#endif
541	!$OMP END CRITICAL (MPI)
542	ENDIF
543
544	end subroutine AllGather_Field
545
546	subroutine Broadcast_Field(Field,ij,ll,rank)
547	implicit none
548	#include "dimensions.h"
549	#include "paramet.h"
550	#ifdef CPP_MPI
551	include 'mpif.h'
552	#endif
553	INTEGER :: ij,ll
554	REAL, dimension(ij,ll) :: Field
555	INTEGER :: rank
556	INTEGER :: ierr
557
558	IF (using_mpi) THEN
559
560	!$OMP CRITICAL (MPI)
561	#ifdef CPP_MPI
562	call MPI_BCAST(Field,ij*ll,MPI_REAL8,rank,COMM_LMDZ,ierr)
563	#endif
564	!$OMP END CRITICAL (MPI)
565
566	ENDIF
567	end subroutine Broadcast_Field
568
569
570	! Subroutine verif_hallo(Field,ij,ll,up,down)
571	! implicit none
572	!#include "dimensions.h"
573	!#include "paramet.h"
574	! include 'mpif.h'
575	!
576	! INTEGER :: ij,ll
577	! REAL, dimension(ij,ll) :: Field
578	! INTEGER :: up,down
579	!
580	! REAL,dimension(ij,ll): NewField
581	!
582	! NewField=0
583	!
584	! ijb=ij_begin
585	! ije=ij_end
586	! if (pole_nord)
587	! NewField(ij_be
588
589	end module parallel

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