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parallel.F90 @ 1

Last change on this file since 1 was 1, checked in by emillour, 14 years ago
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Rev	Line
[1]	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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