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parallel.F90 @ 1264

Last change on this file since 1264 was 1222, checked in by Ehouarn Millour, 15 years ago

Changes and cleanups to enable compiling without physics
and without ioipsl.

IOIPSL related cleanups:

bibio/writehist.F encapsulate the routine (which needs IOIPSL to function)

with #ifdef IOIPSL flag.

dyn3d/abort_gcm.F, dyn3dpar/abort_gcm.F and dyn3dpar/getparam.F90: use ioipsl_getincom module when not compiling with IOIPSL library, in order to always be able to use getin() routine.
removed unused "use IOIPSL" in dyn3dpar/guide_p_mod.F90
calendar related issue: Initialize day_ref and annee_ref in iniacademic.F (i.e. when they are not read from start.nc file)

Earth-specific programs/routines/modules:
create_etat0.F, fluxstokenc.F, limit_netcdf.F, startvar.F
(versions in dyn3d and dyn3dpar)
These routines and modules, which by design and porpose are made to function with
Earth physics are encapsulated with #CPP_EARTH cpp flag.

Earth-specific instructions:

calls to qminimum (specific treatment of first 2 tracers, i.e. water) in dyn3d/caladvtrac.F, dyn3d/integrd.F, dyn3dpar/caladvtrac_p.F, dyn3dpar/integrd_p.F only if (planet_type == 'earth')

Interaction with parallel physics:

routine dyn3dpar/parallel.F90 uses "surface_data" module (which is in the physics ...) to know value of "type_ocean" . Encapsulated that with #ifdef CPP_EARTH and set to a default type_ocean="dummy" otherwise.
So far, only Earth physics are parallelized, so all the interaction between parallel dynamics and parallel physics are encapsulated with #ifdef CCP_EARTH (this way we can run parallel without any physics). The (dyn3dpar) routines which contains such interaction are: bands.F90, gr_dyn_fi_p.F, gr_fi_dyn_p.F, mod_interface_dyn_phys.F90 This should later (when improving dyn/phys interface) be encapsulated with a more general and appropriate #ifdef CPP_PHYS cpp flag.

I checked that these changes do not alter results (on the simple
32x24x11 bench) on Ciclad (seq & mpi), Brodie (seq, mpi & omp) and
Vargas (seq, mpi & omp).

Property svn:eol-style set to native
Property svn:keywords set to Author Date Id Revision

File size: 13.6 KB

Line
1	!
2	! $Id: parallel.F90 1222 2009-08-07 11:48:33Z 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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