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parallel.F90 @ 1

Last change on this file since 1 was 1, checked in by emillour, 14 years ago
Import initial LMDZ5
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1	!
2	! $Id: parallel.F90 1279 2009-12-10 09:02:56Z fairhead $
3	!
4	module parallel
5	USE mod_const_mpi
6
7	LOGICAL,SAVE :: using_mpi
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
46	#ifdef CPP_OMP
47	INTEGER :: OMP_GET_NUM_THREADS
48	EXTERNAL OMP_GET_NUM_THREADS
49	INTEGER :: OMP_GET_THREAD_NUM
50	EXTERNAL OMP_GET_THREAD_NUM
51	#endif
52
53	#ifdef CPP_MPI
54	using_mpi=.TRUE.
55	#else
56	using_mpi=.FALSE.
57	#endif
58
59
60	#ifdef CPP_OMP
61	using_OMP=.TRUE.
62	#else
63	using_OMP=.FALSE.
64	#endif
65
66	call InitVampir
67
68	IF (using_mpi) THEN
69	#ifdef CPP_MPI
70	call MPI_COMM_SIZE(COMM_LMDZ,mpi_size,ierr)
71	call MPI_COMM_RANK(COMM_LMDZ,mpi_rank,ierr)
72	#endif
73	ELSE
74	mpi_size=1
75	mpi_rank=0
76	ENDIF
77
78
79	allocate(jj_begin_para(0:mpi_size-1))
80	allocate(jj_end_para(0:mpi_size-1))
81	allocate(jj_nb_para(0:mpi_size-1))
82
83	do i=0,mpi_size-1
84	jj_nb_para(i)=(jjm+1)/mpi_size
85	if ( i < MOD((jjm+1),mpi_size) ) jj_nb_para(i)=jj_nb_para(i)+1
86
87	if (jj_nb_para(i) <= 2 ) then
88
89	write(lunout,*)"Arret : le nombre de bande de lattitude par process est trop faible (<2)."
90	write(lunout,*)" ---> diminuez le nombre de CPU ou augmentez la taille en lattitude"
91
92	#ifdef CPP_MPI
93	IF (using_mpi) call MPI_ABORT(COMM_LMDZ,-1, ierr)
94	#endif
95	endif
96
97	enddo
98
99	! jj_nb_para(0)=11
100	! jj_nb_para(1)=25
101	! jj_nb_para(2)=25
102	! jj_nb_para(3)=12
103
104	j=1
105
106	do i=0,mpi_size-1
107
108	jj_begin_para(i)=j
109	jj_end_para(i)=j+jj_Nb_para(i)-1
110	j=j+jj_Nb_para(i)
111
112	enddo
113
114	jj_begin = jj_begin_para(mpi_rank)
115	jj_end = jj_end_para(mpi_rank)
116	jj_nb = jj_nb_para(mpi_rank)
117
118	ij_begin=(jj_begin-1)*iip1+1
119	ij_end=jj_end*iip1
120
121	if (mpi_rank.eq.0) then
122	pole_nord=.TRUE.
123	else
124	pole_nord=.FALSE.
125	endif
126
127	if (mpi_rank.eq.mpi_size-1) then
128	pole_sud=.TRUE.
129	else
130	pole_sud=.FALSE.
131	endif
132
133	write(lunout,*)"init_parallel: jj_begin",jj_begin
134	write(lunout,*)"init_parallel: jj_end",jj_end
135	write(lunout,*)"init_parallel: ij_begin",ij_begin
136	write(lunout,*)"init_parallel: ij_end",ij_end
137
138	!$OMP PARALLEL
139
140	#ifdef CPP_OMP
141	!$OMP MASTER
142	omp_size=OMP_GET_NUM_THREADS()
143	!$OMP END MASTER
144	omp_rank=OMP_GET_THREAD_NUM()
145	#else
146	omp_size=1
147	omp_rank=0
148	#endif
149	!$OMP END PARALLEL
150
151	end subroutine init_parallel
152
153
154	subroutine SetDistrib(jj_Nb_New)
155	implicit none
156
157	#include "dimensions.h"
158	#include "paramet.h"
159
160	INTEGER,dimension(0:MPI_Size-1) :: jj_Nb_New
161	INTEGER :: i
162
163	jj_Nb_Para=jj_Nb_New
164
165	jj_begin_para(0)=1
166	jj_end_para(0)=jj_Nb_Para(0)
167
168	do i=1,mpi_size-1
169
170	jj_begin_para(i)=jj_end_para(i-1)+1
171	jj_end_para(i)=jj_begin_para(i)+jj_Nb_para(i)-1
172
173	enddo
174
175	jj_begin = jj_begin_para(mpi_rank)
176	jj_end = jj_end_para(mpi_rank)
177	jj_nb = jj_nb_para(mpi_rank)
178
179	ij_begin=(jj_begin-1)*iip1+1
180	ij_end=jj_end*iip1
181
182	end subroutine SetDistrib
183
184
185
186
187	subroutine Finalize_parallel
188	#ifdef CPP_COUPLE
189	use mod_prism_proto
190	#endif
191	#ifdef CPP_EARTH
192	! Ehouarn: surface_data module is in 'phylmd' ...
193	use surface_data, only : type_ocean
194	implicit none
195	#else
196	implicit none
197	! without the surface_data module, we declare (and set) a dummy 'type_ocean'
198	character(len=6),parameter :: type_ocean="dummy"
199	#endif
200	! #endif of #ifdef CPP_EARTH
201
202	include "dimensions.h"
203	include "paramet.h"
204	#ifdef CPP_MPI
205	include 'mpif.h'
206	#endif
207
208	integer :: ierr
209	integer :: i
210	deallocate(jj_begin_para)
211	deallocate(jj_end_para)
212	deallocate(jj_nb_para)
213
214	if (type_ocean == 'couple') then
215	#ifdef CPP_COUPLE
216	call prism_terminate_proto(ierr)
217	IF (ierr .ne. PRISM_Ok) THEN
218	call abort_gcm('Finalize_parallel',' Probleme dans prism_terminate_proto ',1)
219	endif
220	#endif
221	else
222	#ifdef CPP_MPI
223	IF (using_mpi) call MPI_FINALIZE(ierr)
224	#endif
225	end if
226
227	end subroutine Finalize_parallel
228
229	subroutine Pack_Data(Field,ij,ll,row,Buffer)
230	implicit none
231
232	#include "dimensions.h"
233	#include "paramet.h"
234
235	integer, intent(in) :: ij,ll,row
236	real,dimension(ij,ll),intent(in) ::Field
237	real,dimension(lliip1row), intent(out) :: Buffer
238
239	integer :: Pos
240	integer :: i,l
241
242	Pos=0
243	do l=1,ll
244	do i=1,row*iip1
245	Pos=Pos+1
246	Buffer(Pos)=Field(i,l)
247	enddo
248	enddo
249
250	end subroutine Pack_data
251
252	subroutine Unpack_Data(Field,ij,ll,row,Buffer)
253	implicit none
254
255	#include "dimensions.h"
256	#include "paramet.h"
257
258	integer, intent(in) :: ij,ll,row
259	real,dimension(ij,ll),intent(out) ::Field
260	real,dimension(lliip1row), intent(in) :: Buffer
261
262	integer :: Pos
263	integer :: i,l
264
265	Pos=0
266
267	do l=1,ll
268	do i=1,row*iip1
269	Pos=Pos+1
270	Field(i,l)=Buffer(Pos)
271	enddo
272	enddo
273
274	end subroutine UnPack_data
275
276
277	SUBROUTINE barrier
278	IMPLICIT NONE
279	#ifdef CPP_MPI
280	INCLUDE 'mpif.h'
281	#endif
282	INTEGER :: ierr
283
284	!$OMP CRITICAL (MPI)
285	#ifdef CPP_MPI
286	IF (using_mpi) CALL MPI_Barrier(COMM_LMDZ,ierr)
287	#endif
288	!$OMP END CRITICAL (MPI)
289
290	END SUBROUTINE barrier
291
292
293	subroutine exchange_hallo(Field,ij,ll,up,down)
294	USE Vampir
295	implicit none
296	#include "dimensions.h"
297	#include "paramet.h"
298	#ifdef CPP_MPI
299	include 'mpif.h'
300	#endif
301	INTEGER :: ij,ll
302	REAL, dimension(ij,ll) :: Field
303	INTEGER :: up,down
304
305	INTEGER :: ierr
306	LOGICAL :: SendUp,SendDown
307	LOGICAL :: RecvUp,RecvDown
308	INTEGER, DIMENSION(4) :: Request
309	#ifdef CPP_MPI
310	INTEGER, DIMENSION(MPI_STATUS_SIZE,4) :: Status
311	#else
312	INTEGER, DIMENSION(1,4) :: Status
313	#endif
314	INTEGER :: NbRequest
315	REAL, dimension(:),allocatable :: Buffer_Send_up,Buffer_Send_down
316	REAL, dimension(:),allocatable :: Buffer_Recv_up,Buffer_Recv_down
317	INTEGER :: Buffer_size
318
319	IF (using_mpi) THEN
320
321	CALL barrier
322
323	call VTb(VThallo)
324
325	SendUp=.TRUE.
326	SendDown=.TRUE.
327	RecvUp=.TRUE.
328	RecvDown=.TRUE.
329
330	IF (pole_nord) THEN
331	SendUp=.FALSE.
332	RecvUp=.FALSE.
333	ENDIF
334
335	IF (pole_sud) THEN
336	SendDown=.FALSE.
337	RecvDown=.FALSE.
338	ENDIF
339
340	if (up.eq.0) then
341	SendDown=.FALSE.
342	RecvUp=.FALSE.
343	endif
344
345	if (down.eq.0) then
346	SendUp=.FALSE.
347	RecvDown=.FALSE.
348	endif
349
350	NbRequest=0
351
352	IF (SendUp) THEN
353	NbRequest=NbRequest+1
354	buffer_size=downiip1ll
355	allocate(Buffer_Send_up(Buffer_size))
356	call PACK_Data(Field(ij_begin,1),ij,ll,down,Buffer_Send_up)
357	!$OMP CRITICAL (MPI)
358	#ifdef CPP_MPI
359	call MPI_ISSEND(Buffer_send_up,Buffer_Size,MPI_REAL8,MPI_Rank-1,1, &
360	COMM_LMDZ,Request(NbRequest),ierr)
361	#endif
362	!$OMP END CRITICAL (MPI)
363	ENDIF
364
365	IF (SendDown) THEN
366	NbRequest=NbRequest+1
367
368	buffer_size=upiip1ll
369	allocate(Buffer_Send_down(Buffer_size))
370	call PACK_Data(Field(ij_end+1-up*iip1,1),ij,ll,up,Buffer_send_down)
371
372	!$OMP CRITICAL (MPI)
373	#ifdef CPP_MPI
374	call MPI_ISSEND(Buffer_send_down,Buffer_Size,MPI_REAL8,MPI_Rank+1,1, &
375	COMM_LMDZ,Request(NbRequest),ierr)
376	#endif
377	!$OMP END CRITICAL (MPI)
378	ENDIF
379
380
381	IF (RecvUp) THEN
382	NbRequest=NbRequest+1
383	buffer_size=upiip1ll
384	allocate(Buffer_recv_up(Buffer_size))
385
386	!$OMP CRITICAL (MPI)
387	#ifdef CPP_MPI
388	call MPI_IRECV(Buffer_recv_up,Buffer_size,MPI_REAL8,MPI_Rank-1,1, &
389	COMM_LMDZ,Request(NbRequest),ierr)
390	#endif
391	!$OMP END CRITICAL (MPI)
392
393
394	ENDIF
395
396	IF (RecvDown) THEN
397	NbRequest=NbRequest+1
398	buffer_size=downiip1ll
399	allocate(Buffer_recv_down(Buffer_size))
400
401	!$OMP CRITICAL (MPI)
402	#ifdef CPP_MPI
403	call MPI_IRECV(Buffer_recv_down,Buffer_size,MPI_REAL8,MPI_Rank+1,1, &
404	COMM_LMDZ,Request(NbRequest),ierr)
405	#endif
406	!$OMP END CRITICAL (MPI)
407
408	ENDIF
409
410	#ifdef CPP_MPI
411	if (NbRequest > 0) call MPI_WAITALL(NbRequest,Request,Status,ierr)
412	#endif
413	IF (RecvUp) call Unpack_Data(Field(ij_begin-up*iip1,1),ij,ll,up,Buffer_Recv_up)
414	IF (RecvDown) call Unpack_Data(Field(ij_end+1,1),ij,ll,down,Buffer_Recv_down)
415
416	call VTe(VThallo)
417	call barrier
418
419	ENDIF ! using_mpi
420
421	RETURN
422
423	end subroutine exchange_Hallo
424
425
426	subroutine Gather_Field(Field,ij,ll,rank)
427	implicit none
428	#include "dimensions.h"
429	#include "paramet.h"
430	#include "iniprint.h"
431	#ifdef CPP_MPI
432	include 'mpif.h'
433	#endif
434	INTEGER :: ij,ll,rank
435	REAL, dimension(ij,ll) :: Field
436	REAL, dimension(:),allocatable :: Buffer_send
437	REAL, dimension(:),allocatable :: Buffer_Recv
438	INTEGER, dimension(0:MPI_Size-1) :: Recv_count, displ
439	INTEGER :: ierr
440	INTEGER ::i
441
442	IF (using_mpi) THEN
443
444	if (ij==ip1jmp1) then
445	allocate(Buffer_send(iip1ll(jj_end-jj_begin+1)))
446	call Pack_Data(Field(ij_begin,1),ij,ll,jj_end-jj_begin+1,Buffer_send)
447	else if (ij==ip1jm) then
448	allocate(Buffer_send(iip1ll(min(jj_end,jjm)-jj_begin+1)))
449	call Pack_Data(Field(ij_begin,1),ij,ll,min(jj_end,jjm)-jj_begin+1,Buffer_send)
450	else
451	write(lunout,*)ij
452	stop 'erreur dans Gather_Field'
453	endif
454
455	if (MPI_Rank==rank) then
456	allocate(Buffer_Recv(ij*ll))
457
458	!CDIR NOVECTOR
459	do i=0,MPI_Size-1
460
461	if (ij==ip1jmp1) then
462	Recv_count(i)=(jj_end_para(i)-jj_begin_para(i)+1)lliip1
463	else if (ij==ip1jm) then
464	Recv_count(i)=(min(jj_end_para(i),jjm)-jj_begin_para(i)+1)lliip1
465	else
466	stop 'erreur dans Gather_Field'
467	endif
468
469	if (i==0) then
470	displ(i)=0
471	else
472	displ(i)=displ(i-1)+Recv_count(i-1)
473	endif
474
475	enddo
476
477	endif
478
479	!$OMP CRITICAL (MPI)
480	#ifdef CPP_MPI
481	call MPI_GATHERV(Buffer_send,(min(ij_end,ij)-ij_begin+1)*ll,MPI_REAL8, &
482	Buffer_Recv,Recv_count,displ,MPI_REAL8,rank,COMM_LMDZ,ierr)
483	#endif
484	!$OMP END CRITICAL (MPI)
485
486	if (MPI_Rank==rank) then
487
488	if (ij==ip1jmp1) then
489	do i=0,MPI_Size-1
490	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
491	jj_end_para(i)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
492	enddo
493	else if (ij==ip1jm) then
494	do i=0,MPI_Size-1
495	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
496	min(jj_end_para(i),jjm)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
497	enddo
498	endif
499	endif
500	ENDIF ! using_mpi
501
502	end subroutine Gather_Field
503
504
505	subroutine AllGather_Field(Field,ij,ll)
506	implicit none
507	#include "dimensions.h"
508	#include "paramet.h"
509	#ifdef CPP_MPI
510	include 'mpif.h'
511	#endif
512	INTEGER :: ij,ll
513	REAL, dimension(ij,ll) :: Field
514	INTEGER :: ierr
515
516	IF (using_mpi) THEN
517	call Gather_Field(Field,ij,ll,0)
518	!$OMP CRITICAL (MPI)
519	#ifdef CPP_MPI
520	call MPI_BCAST(Field,ij*ll,MPI_REAL8,0,COMM_LMDZ,ierr)
521	#endif
522	!$OMP END CRITICAL (MPI)
523	ENDIF
524
525	end subroutine AllGather_Field
526
527	subroutine Broadcast_Field(Field,ij,ll,rank)
528	implicit none
529	#include "dimensions.h"
530	#include "paramet.h"
531	#ifdef CPP_MPI
532	include 'mpif.h'
533	#endif
534	INTEGER :: ij,ll
535	REAL, dimension(ij,ll) :: Field
536	INTEGER :: rank
537	INTEGER :: ierr
538
539	IF (using_mpi) THEN
540
541	!$OMP CRITICAL (MPI)
542	#ifdef CPP_MPI
543	call MPI_BCAST(Field,ij*ll,MPI_REAL8,rank,COMM_LMDZ,ierr)
544	#endif
545	!$OMP END CRITICAL (MPI)
546
547	ENDIF
548	end subroutine Broadcast_Field
549
550
551	/*
552	Subroutine verif_hallo(Field,ij,ll,up,down)
553	implicit none
554	#include "dimensions.h"
555	#include "paramet.h"
556	include 'mpif.h'
557
558	INTEGER :: ij,ll
559	REAL, dimension(ij,ll) :: Field
560	INTEGER :: up,down
561
562	REAL,dimension(ij,ll): NewField
563
564	NewField=0
565
566	ijb=ij_begin
567	ije=ij_end
568	if (pole_nord)
569	NewField(ij_be
570	*/
571	end module parallel

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