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mod_hallo.F90 @ 730

Last change on this file since 730 was 630, checked in by Laurent Fairhead, 20 years ago
Import d'une version parallele de la dynamique YM LF
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File size: 17.7 KB

Rev	Line
[630]	1	module mod_Hallo
	2	USE parallel
	3	implicit none
	4	! include 'mpif.h'
	5	integer, parameter :: MaxRequest=80
	6	integer, parameter :: MaxProc=80
	7	integer, parameter :: MaxBufferSize=1024102416
	8	integer, parameter :: ListSize=1000
	9
	10	integer,save :: MaxBufferSize_Used
	11
	12	real,save,pointer,dimension(:) :: Buffer
	13	! pointer (Pbuffer,Buffer)
	14	! real,dimension(:) :: Buffer
	15	integer,dimension(Listsize) :: Buffer_Pos
	16	integer :: Index_Pos
	17
	18	type Hallo
	19	real, dimension(:,:),pointer :: Field
	20	integer :: offset
	21	integer :: size
	22	integer :: NbLevel
	23	integer :: Stride
	24	end type Hallo
	25
	26	type request_SR
	27	integer :: NbRequest=0
	28	! real,dimension(:),allocatable :: Buffer
	29	! real,dimension(:),pointer :: Buffer
	30	integer :: Pos
	31	integer :: Index
	32	type(Hallo),dimension(MaxRequest) :: Hallo
	33	integer :: MSG_Request
	34	end type request_SR
	35
	36	type request
	37	type(request_SR),dimension(0:MaxProc-1) :: RequestSend
	38	type(request_SR),dimension(0:MaxProc-1) :: RequestRecv
	39	integer :: tag=1
	40	end type request
	41
	42
	43	contains
	44
	45	subroutine Init_mod_hallo(MPI_Buffer)
	46	implicit none
	47	real,dimension(:),target :: MPI_BUFFER
	48	integer i
	49	Index_Pos=1
	50	Buffer_Pos(Index_Pos)=1
	51
	52	Buffer=>MPI_Buffer
	53	MaxBufferSize_Used=0
	54	end subroutine init_mod_hallo
	55
	56	subroutine allocate_buffer(Size,Index,Pos)
	57	implicit none
	58	integer :: Size
	59	integer :: Index
	60	integer :: Pos
	61
	62	if (Buffer_pos(Index_pos)+Size>MaxBufferSize_Used) MaxBufferSize_Used=Buffer_pos(Index_pos)+Size
	63	if (Buffer_pos(Index_pos)+Size>MaxBufferSize) then
	64	print *,'STOP :: La taille de MaxBufferSize dans mod_hallo.F90 est trop petite !!!!'
	65	stop
	66	endif
	67
	68	if (Index_pos>=ListSize) then
	69	print *,'STOP :: La taille de ListSize dans mod_hallo.F90 est trop petite !!!!'
	70	stop
	71	endif
	72
	73	Pos=Buffer_Pos(Index_Pos)
	74	Buffer_Pos(Index_pos+1)=Buffer_Pos(Index_Pos)+Size
	75	Index_Pos=Index_Pos+1
	76	Index=Index_Pos
	77
	78	end subroutine allocate_buffer
	79
	80	subroutine deallocate_buffer(Index)
	81	implicit none
	82	integer :: Index
	83
	84	Buffer_Pos(Index)=-1
	85
	86	do while (Buffer_Pos(Index_Pos)==-1 .and. Index_Pos>1)
	87	Index_Pos=Index_Pos-1
	88	end do
	89
	90	end subroutine deallocate_buffer
	91
	92	subroutine SetTag(a_request,tag)
	93	implicit none
	94	type(request):: a_request
	95	integer :: tag
	96
	97	a_request%tag=tag
	98	end subroutine SetTag
	99
	100
	101	subroutine Init_Hallo(Field,Stride,NbLevel,offset,size,NewHallo)
	102	integer :: Stride
	103	integer :: NbLevel
	104	integer :: size
	105	integer :: offset
	106	real, dimension(Stride,NbLevel),target :: Field
	107	type(Hallo) :: NewHallo
	108
	109	NewHallo%Field=>Field
	110	NewHallo%Stride=Stride
	111	NewHallo%NbLevel=NbLevel
	112	NewHallo%size=size
	113	NewHallo%offset=offset
	114
	115
	116	end subroutine Init_Hallo
	117
	118	subroutine Register_SendField(Field,ij,ll,offset,size,target,a_request)
	119	implicit none
	120
	121	#include "dimensions90.h"
	122	#include "paramet90.h"
	123	include 'mpif.h'
	124
	125	INTEGER :: ij,ll,offset,size,target
	126	REAL, dimension(ij,ll) :: Field
	127	type(request),target :: a_request
	128	type(request_SR),pointer :: Ptr_request
	129
	130	Ptr_Request=>a_request%RequestSend(target)
	131	Ptr_Request%NbRequest=Ptr_Request%NbRequest+1
	132	if (Ptr_Request%NbRequest>=MaxRequest) then
	133	print *,'STOP :: La taille de MaxRequest dans mod_hallo.F90 est trop petite !!!!'
	134	stop
	135	endif
	136	call Init_Hallo(Field,ij,ll,offset,size,Ptr_request%Hallo(Ptr_Request%NbRequest))
	137
	138	end subroutine Register_SendField
	139
	140	subroutine Register_RecvField(Field,ij,ll,offset,size,target,a_request)
	141	implicit none
	142
	143	#include "dimensions90.h"
	144	#include "paramet90.h"
	145	include 'mpif.h'
	146
	147	INTEGER :: ij,ll,offset,size,target
	148	REAL, dimension(ij,ll) :: Field
	149	type(request),target :: a_request
	150	type(request_SR),pointer :: Ptr_request
	151
	152	Ptr_Request=>a_request%RequestRecv(target)
	153	Ptr_Request%NbRequest=Ptr_Request%NbRequest+1
	154
	155	if (Ptr_Request%NbRequest>=MaxRequest) then
	156	print *,'STOP :: La taille de MaxRequest dans mod_hallo.F90 est trop petite !!!!'
	157	stop
	158	endif
	159
	160	call Init_Hallo(Field,ij,ll,offset,size,Ptr_request%Hallo(Ptr_Request%NbRequest))
	161
	162
	163	end subroutine Register_RecvField
	164
	165	subroutine Register_SwapField(FieldS,FieldR,ij,ll,jj_Nb_New,a_request)
	166
	167	implicit none
	168	#include "dimensions90.h"
	169	#include "paramet90.h"
	170	include 'mpif.h'
	171
	172	INTEGER :: ij,ll
	173	REAL, dimension(ij,ll) :: FieldS
	174	REAL, dimension(ij,ll) :: FieldR
	175	type(request) :: a_request
	176	integer,dimension(0:MPI_Size-1) :: jj_Nb_New
	177	integer,dimension(0:MPI_Size-1) :: jj_Begin_New,jj_End_New
	178
	179	integer ::i,jje,jjb
	180
	181	jj_begin_New(0)=1
	182	jj_End_New(0)=jj_Nb_New(0)
	183	do i=1,MPI_Size-1
	184	jj_begin_New(i)=jj_end_New(i-1)+1
	185	jj_end_New(i)=jj_begin_new(i)+jj_Nb_New(i)-1
	186	enddo
	187
	188	do i=0,MPI_Size-1
	189	if (i /= MPI_Rank) then
	190	jjb=max(jj_begin_new(i),jj_begin)
	191	jje=min(jj_end_new(i),jj_end)
	192
	193	if (ij==ip1jm .and. jje==jjp1) jje=jjm
	194
	195	if (jje >= jjb) then
	196	call Register_SendField(FieldS,ij,ll,jjb,jje-jjb+1,i,a_request)
	197	endif
	198
	199	jjb=max(jj_begin_new(MPI_Rank),jj_begin_Para(i))
	200	jje=min(jj_end_new(MPI_Rank),jj_end_Para(i))
	201
	202	if (ij==ip1jm .and. jje==jjp1) jje=jjm
	203
	204	if (jje >= jjb) then
	205	call Register_RecvField(FieldR,ij,ll,jjb,jje-jjb+1,i,a_request)
	206	endif
	207
	208	endif
	209	enddo
	210
	211	end subroutine Register_SwapField
	212
	213
	214	subroutine Register_SwapFieldHallo(FieldS,FieldR,ij,ll,jj_Nb_New,Up,Down,a_request)
	215
	216	implicit none
	217	#include "dimensions90.h"
	218	#include "paramet90.h"
	219	include 'mpif.h'
	220
	221	INTEGER :: ij,ll,Up,Down
	222	REAL, dimension(ij,ll) :: FieldS
	223	REAL, dimension(ij,ll) :: FieldR
	224	type(request) :: a_request
	225	integer,dimension(0:MPI_Size-1) :: jj_Nb_New
	226	integer,dimension(0:MPI_Size-1) :: jj_Begin_New,jj_End_New
	227
	228	integer ::i,jje,jjb
	229
	230	jj_begin_New(0)=1
	231	jj_End_New(0)=jj_Nb_New(0)
	232	do i=1,MPI_Size-1
	233	jj_begin_New(i)=jj_end_New(i-1)+1
	234	jj_end_New(i)=jj_begin_new(i)+jj_Nb_New(i)-1
	235	enddo
	236
	237	do i=0,MPI_Size-1
	238	jj_begin_New(i)=max(1,jj_begin_New(i)-Up)
	239	jj_end_New(i)=min(jjp1,jj_end_new(i)+Down)
	240	enddo
	241
	242	do i=0,MPI_Size-1
	243	if (i /= MPI_Rank) then
	244	jjb=max(jj_begin_new(i),jj_begin)
	245	jje=min(jj_end_new(i),jj_end)
	246
	247	if (ij==ip1jm .and. jje==jjp1) jje=jjm
	248
	249	if (jje >= jjb) then
	250	call Register_SendField(FieldS,ij,ll,jjb,jje-jjb+1,i,a_request)
	251	endif
	252
	253	jjb=max(jj_begin_new(MPI_Rank),jj_begin_Para(i))
	254	jje=min(jj_end_new(MPI_Rank),jj_end_Para(i))
	255
	256	if (ij==ip1jm .and. jje==jjp1) jje=jjm
	257
	258	if (jje >= jjb) then
	259	call Register_RecvField(FieldR,ij,ll,jjb,jje-jjb+1,i,a_request)
	260	endif
	261
	262	endif
	263	enddo
	264
	265	end subroutine Register_SwapFieldHallo
	266
	267	subroutine Register_Hallo(Field,ij,ll,RUp,Rdown,SUp,SDown,a_request)
	268
	269	implicit none
	270	#include "dimensions90.h"
	271	#include "paramet90.h"
	272	include 'mpif.h'
	273
	274	INTEGER :: ij,ll
	275	REAL, dimension(ij,ll) :: Field
	276	INTEGER :: Sup,Sdown,rup,rdown
	277	type(request) :: a_request
	278	type(Hallo),pointer :: PtrHallo
	279	LOGICAL :: SendUp,SendDown
	280	LOGICAL :: RecvUp,RecvDown
	281
	282
	283	SendUp=.TRUE.
	284	SendDown=.TRUE.
	285	RecvUp=.TRUE.
	286	RecvDown=.TRUE.
	287
	288	IF (pole_nord) THEN
	289	SendUp=.FALSE.
	290	RecvUp=.FALSE.
	291	ENDIF
	292
	293	IF (pole_sud) THEN
	294	SendDown=.FALSE.
	295	RecvDown=.FALSE.
	296	ENDIF
	297
	298	if (Sup.eq.0) then
	299	SendUp=.FALSE.
	300	endif
	301
	302	if (Sdown.eq.0) then
	303	SendDown=.FALSE.
	304	endif
	305
	306	if (Rup.eq.0) then
	307	RecvUp=.FALSE.
	308	endif
	309
	310	if (Rdown.eq.0) then
	311	RecvDown=.FALSE.
	312	endif
	313
	314	IF (SendUp) THEN
	315	call Register_SendField(Field,ij,ll,jj_begin,SUp,MPI_Rank-1,a_request)
	316	ENDIF
	317
	318	IF (SendDown) THEN
	319	call Register_SendField(Field,ij,ll,jj_end-SDown+1,SDown,MPI_Rank+1,a_request)
	320	ENDIF
	321
	322
	323	IF (RecvUp) THEN
	324	call Register_RecvField(Field,ij,ll,jj_begin-Rup,RUp,MPI_Rank-1,a_request)
	325	ENDIF
	326
	327	IF (RecvDown) THEN
	328	call Register_RecvField(Field,ij,ll,jj_end+1,RDown,MPI_Rank+1,a_request)
	329	ENDIF
	330
	331	end subroutine Register_Hallo
	332
	333	subroutine SendRequest(a_Request)
	334	implicit none
	335
	336	#include "dimensions90.h"
	337	#include "paramet90.h"
	338	include 'mpif.h'
	339
	340	type(request),target :: a_request
	341	type(request_SR),pointer :: Req
	342	type(Hallo),pointer :: PtrHallo
	343	integer :: SizeBuffer
	344	integer :: i,rank,l,ij,Pos,ierr
	345	integer :: offset
	346	! real,dimension(:),pointer :: Buffer
	347	real,dimension(:,:),pointer :: Field
	348	integer :: Nb
	349
	350	do rank=0,MPI_SIZE-1
	351
	352	Req=>a_Request%RequestSend(rank)
	353
	354	SizeBuffer=0
	355	do i=1,Req%NbRequest
	356	PtrHallo=>Req%Hallo(i)
	357	SizeBuffer=SizeBuffer+PtrHallo%sizePtrHallo%NbLeveliip1
	358	enddo
	359
	360	if (SizeBuffer>0) then
	361
	362	! allocate(Req%Buffer(SizeBuffer))
	363	call allocate_buffer(SizeBuffer,Req%Index,Req%pos)
	364
	365	Pos=Req%Pos
	366	! Buffer=>req%Buffer
	367	do i=1,Req%NbRequest
	368	PtrHallo=>Req%Hallo(i)
	369	offset=(PtrHallo%offset-1)*iip1+1
	370	Nb=iip1*PtrHallo%size-1
	371	Field=>PtrHallo%Field
	372
	373	do l=1,PtrHallo%NbLevel
	374	!cdir NODEP
	375	do ij=0,Nb
	376	Buffer(Pos+ij)=Field(Offset+ij,l)
	377	enddo
	378	! Buffer(Pos:Pos+Nb)=Field(offset:offset+Nb,l)
	379
	380	Pos=Pos+Nb+1
	381	enddo
	382
	383	enddo
	384
	385	! print *, 'process',MPI_RANK,'ISSEND: requette ',a_request%tag,'au process',rank,'de taille',SizeBuffer
	386	! call MPI_ISSEND(Req%Buffer,SizeBuffer,MPI_REAL8,rank,a_request%tag, &
	387	! MPI_COMM_WORLD,Req%MSG_Request,ierr)
	388	call MPI_ISSEND(Buffer(req%Pos),SizeBuffer,MPI_REAL8,rank,a_request%tag, &
	389	MPI_COMM_WORLD,Req%MSG_Request,ierr)
	390
	391	endif
	392
	393	enddo
	394
	395
	396	do rank=0,MPI_SIZE-1
	397
	398	Req=>a_Request%RequestRecv(rank)
	399	SizeBuffer=0
	400
	401	do i=1,Req%NbRequest
	402	PtrHallo=>Req%Hallo(i)
	403	SizeBuffer=SizeBuffer+PtrHallo%sizePtrHallo%NbLeveliip1
	404	enddo
	405
	406	if (SizeBuffer>0) then
	407	! allocate(Req%Buffer(SizeBuffer))
	408	call allocate_buffer(SizeBuffer,Req%Index,Req%Pos)
	409	! print *, 'process',MPI_RANK,'IRECV: requette ',a_request%tag,'au process',rank,'de taille',SizeBuffer
	410
	411	! call MPI_IRECV(Req%Buffer,SizeBuffer,MPI_REAL8,rank,a_request%tag, &
	412	! MPI_COMM_WORLD,Req%MSG_Request,ierr)
	413	call MPI_IRECV(Buffer(Req%Pos),SizeBuffer,MPI_REAL8,rank,a_request%tag, &
	414	MPI_COMM_WORLD,Req%MSG_Request,ierr)
	415
	416	endif
	417
	418	enddo
	419
	420	end subroutine SendRequest
	421
	422	subroutine WaitRequest(a_Request)
	423	implicit none
	424
	425	#include "dimensions90.h"
	426	#include "paramet90.h"
	427	include 'mpif.h'
	428
	429	type(request),target :: a_request
	430	type(request_SR),pointer :: Req
	431	type(Hallo),pointer :: PtrHallo
	432	integer, dimension(4) :: TabRequest
	433	integer, dimension(MPI_STATUS_SIZE,4) :: TabStatus
	434	integer :: NbRequest
	435	integer :: i,rank,pos,ij,l,ierr
	436	integer :: offset
	437	integer :: Nb
	438
	439
	440	NbRequest=0
	441	do rank=0,MPI_SIZE-1
	442	Req=>a_request%RequestSend(rank)
	443	if (Req%NbRequest>0) then
	444	NbRequest=NbRequest+1
	445	TabRequest(NbRequest)=Req%MSG_Request
	446	endif
	447	enddo
	448
	449	do rank=0,MPI_SIZE-1
	450	Req=>a_request%RequestRecv(rank)
	451	if (Req%NbRequest>0) then
	452	NbRequest=NbRequest+1
	453	TabRequest(NbRequest)=Req%MSG_Request
	454	endif
	455	enddo
	456
	457	if (NbRequest>0) call MPI_WAITALL(NbRequest,TabRequest,TabStatus,ierr)
	458
	459	do rank=0,MPI_Size-1
	460	Req=>a_request%RequestRecv(rank)
	461	if (Req%NbRequest>0) then
	462	Pos=Req%Pos
	463	do i=1,Req%NbRequest
	464	PtrHallo=>Req%Hallo(i)
	465	offset=(PtrHallo%offset-1)*iip1+1
	466	Nb=iip1*PtrHallo%size-1
	467
	468	do l=1,PtrHallo%NbLevel
	469	!cdir NODEP
	470	do ij=0,Nb
	471	PtrHallo%Field(offset+ij,l)=Buffer(Pos+ij)
	472	enddo
	473	! PtrHallo%Field(offset:offset+Nb,l)=Buffer(Pos:Pos+Nb)
	474	! do ij=offset,offset+iip1*PtrHallo%size-1
	475	! PtrHallo%Field(ij,l)=Buffer(Pos)
	476	! Pos=Pos+1
	477	! enddo
	478	Pos=Pos+Nb+1
	479	enddo
	480
	481	enddo
	482	endif
	483	enddo
	484
	485	do rank=0,MPI_SIZE-1
	486	Req=>a_request%RequestSend(rank)
	487	if (Req%NbRequest>0) then
	488	call deallocate_buffer(Req%Index)
	489	Req%NbRequest=0
	490	endif
	491	enddo
	492
	493	do rank=0,MPI_SIZE-1
	494	Req=>a_request%RequestRecv(rank)
	495	if (Req%NbRequest>0) then
	496	call deallocate_buffer(Req%Index)
	497	Req%NbRequest=0
	498	endif
	499	enddo
	500
	501	a_request%tag=1
	502	end subroutine WaitRequest
	503
	504	subroutine WaitSendRequest(a_Request)
	505	implicit none
	506
	507	#include "dimensions90.h"
	508	#include "paramet90.h"
	509	include 'mpif.h'
	510
	511	type(request),target :: a_request
	512	type(request_SR),pointer :: Req
	513	type(Hallo),pointer :: PtrHallo
	514	integer, dimension(4) :: TabRequest
	515	integer, dimension(MPI_STATUS_SIZE,4) :: TabStatus
	516	integer :: NbRequest
	517	integer :: i,rank,pos,ij,l,ierr
	518	integer :: offset
	519
	520
	521	NbRequest=0
	522	do rank=0,MPI_SIZE-1
	523	Req=>a_request%RequestSend(rank)
	524	if (Req%NbRequest>0) then
	525	NbRequest=NbRequest+1
	526	TabRequest(NbRequest)=Req%MSG_Request
	527	endif
	528	enddo
	529
	530
	531	if (NbRequest>0) call MPI_WAITALL(NbRequest,TabRequest,TabStatus,ierr)
	532
	533
	534	do rank=0,MPI_SIZE-1
	535	Req=>a_request%RequestSend(rank)
	536	if (Req%NbRequest>0) then
	537	call deallocate_buffer(Req%Index)
	538	Req%NbRequest=0
	539	endif
	540	enddo
	541
	542	a_request%tag=1
	543	end subroutine WaitSendRequest
	544
	545	subroutine WaitRecvRequest(a_Request)
	546	implicit none
	547
	548	#include "dimensions90.h"
	549	#include "paramet90.h"
	550	include 'mpif.h'
	551
	552	type(request),target :: a_request
	553	type(request_SR),pointer :: Req
	554	type(Hallo),pointer :: PtrHallo
	555	integer, dimension(4) :: TabRequest
	556	integer, dimension(MPI_STATUS_SIZE,4) :: TabStatus
	557	integer :: NbRequest
	558	integer :: i,rank,pos,ij,l,ierr
	559	integer :: offset,Nb
	560
	561
	562	NbRequest=0
	563
	564	do rank=0,MPI_SIZE-1
	565	Req=>a_request%RequestRecv(rank)
	566	if (Req%NbRequest>0) then
	567	NbRequest=NbRequest+1
	568	TabRequest(NbRequest)=Req%MSG_Request
	569	endif
	570	enddo
	571
	572
	573	if (NbRequest>0) call MPI_WAITALL(NbRequest,TabRequest,TabStatus,ierr)
	574
	575	do rank=0,MPI_Size-1
	576	Req=>a_request%RequestRecv(rank)
	577	if (Req%NbRequest>0) then
	578	Pos=Req%Pos
	579	do i=1,Req%NbRequest
	580	PtrHallo=>Req%Hallo(i)
	581	offset=(PtrHallo%offset-1)*iip1+1
	582	Nb=iip1*PtrHallo%size-1
	583
	584	do l=1,PtrHallo%NbLevel
	585	!cdir NODEP
	586	do ij=0,Nb
	587	PtrHallo%Field(offset+ij,l)=Buffer(Pos+ij)
	588	enddo
	589	Pos=Pos+Nb+1
	590	enddo
	591	enddo
	592	endif
	593	enddo
	594
	595
	596	do rank=0,MPI_SIZE-1
	597	Req=>a_request%RequestRecv(rank)
	598	if (Req%NbRequest>0) then
	599	call deallocate_buffer(Req%Index)
	600	Req%NbRequest=0
	601	endif
	602	enddo
	603
	604	a_request%tag=1
	605	end subroutine WaitRecvRequest
	606
	607
	608
	609	subroutine CopyField(FieldS,FieldR,ij,ll,jj_Nb_New)
	610
	611	implicit none
	612	#include "dimensions90.h"
	613	#include "paramet90.h"
	614	include 'mpif.h'
	615
	616	INTEGER :: ij,ll
	617	REAL, dimension(ij,ll) :: FieldS
	618	REAL, dimension(ij,ll) :: FieldR
	619	integer,dimension(0:MPI_Size-1) :: jj_Nb_New
	620	integer,dimension(0:MPI_Size-1) :: jj_Begin_New,jj_End_New
	621
	622	integer ::i,jje,jjb,ijb,ije
	623
	624	jj_begin_New(0)=1
	625	jj_End_New(0)=jj_Nb_New(0)
	626	do i=1,MPI_Size-1
	627	jj_begin_New(i)=jj_end_New(i-1)+1
	628	jj_end_New(i)=jj_begin_new(i)+jj_Nb_New(i)-1
	629	enddo
	630
	631	jjb=max(jj_begin,jj_begin_new(MPI_Rank))
	632	jje=min(jj_end,jj_end_new(MPI_Rank))
	633	if (ij==ip1jm) jje=min(jje,jjm)
	634
	635	if (jje >= jjb) then
	636	ijb=(jjb-1)*iip1+1
	637	ije=jje*iip1
	638	FieldR(ijb:ije,1:ll)=FieldS(ijb:ije,1:ll)
	639	endif
	640
	641	end subroutine CopyField
	642
	643	subroutine CopyFieldHallo(FieldS,FieldR,ij,ll,jj_Nb_New,Up,Down)
	644
	645	implicit none
	646	#include "dimensions90.h"
	647	#include "paramet90.h"
	648	include 'mpif.h'
	649
	650	INTEGER :: ij,ll,Up,Down
	651	REAL, dimension(ij,ll) :: FieldS
	652	REAL, dimension(ij,ll) :: FieldR
	653	integer,dimension(0:MPI_Size-1) :: jj_Nb_New
	654	integer,dimension(0:MPI_Size-1) :: jj_Begin_New,jj_End_New
	655
	656	integer ::i,jje,jjb,ijb,ije
	657
	658
	659	jj_begin_New(0)=1
	660	jj_End_New(0)=jj_Nb_New(0)
	661	do i=1,MPI_Size-1
	662	jj_begin_New(i)=jj_end_New(i-1)+1
	663	jj_end_New(i)=jj_begin_new(i)+jj_Nb_New(i)-1
	664	enddo
	665
	666
	667	jjb=max(jj_begin,jj_begin_new(MPI_Rank)-Up)
	668	jje=min(jj_end,jj_end_new(MPI_Rank)+Down)
	669	if (ij==ip1jm) jje=min(jje,jjm)
	670
	671
	672	if (jje >= jjb) then
	673	ijb=(jjb-1)*iip1+1
	674	ije=jje*iip1
	675	FieldR(ijb:ije,1:ll)=FieldS(ijb:ije,1:ll)
	676	endif
	677	end subroutine CopyFieldHallo
	678
	679	end module mod_Hallo
	680

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