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parallel.F90 @ 4038

Last change on this file since 4038 was 630, checked in by Laurent Fairhead, 20 years ago
Import d'une version parallele de la dynamique YM LF
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 10.6 KB

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1	module parallel
2
3	integer, save :: mpi_size
4	integer, save :: mpi_rank
5	integer, save :: jj_begin
6	integer, save :: jj_end
7	integer, save :: jj_nb
8	integer, save :: ij_begin
9	integer, save :: ij_end
10	logical, save :: pole_nord
11	logical, save :: pole_sud
12
13	integer, allocatable, save, dimension(:) :: jj_begin_para
14	integer, allocatable, save, dimension(:) :: jj_end_para
15	integer, allocatable, save, dimension(:) :: jj_nb_para
16
17	contains
18
19	subroutine init_parallel
20	USE vampir
21	implicit none
22
23	integer :: ierr
24	integer :: i,j
25	integer :: type_size
26	integer, dimension(3) :: blocklen,type
27
28
29	include 'mpif.h'
30	#include "dimensions90.h"
31	#include "paramet90.h"
32
33	call MPI_INIT(ierr)
34	call InitVampir
35	call MPI_COMM_SIZE(MPI_COMM_WORLD,mpi_size,ierr)
36	call MPI_COMM_RANK(MPI_COMM_WORLD,mpi_rank,ierr)
37
38
39	allocate(jj_begin_para(0:mpi_size-1))
40	allocate(jj_end_para(0:mpi_size-1))
41	allocate(jj_nb_para(0:mpi_size-1))
42
43	do i=0,mpi_size-1
44	jj_nb_para(i)=(jjm+1)/mpi_size
45	if ( i < MOD((jjm+1),mpi_size) ) jj_nb_para(i)=jj_nb_para(i)+1
46
47	if (jj_nb_para(i) <= 2 ) then
48
49	print *,"Arret : le nombre de bande de lattitude par process est trop faible (<2)."
50	print *," ---> diminuez le nombre de CPU ou augmentez la taille en lattitude"
51
52	call MPI_ABORT(MPI_COMM_WORLD,-1, ierr)
53
54	endif
55
56	enddo
57
58	! jj_nb_para(0)=11
59	! jj_nb_para(1)=25
60	! jj_nb_para(2)=25
61	! jj_nb_para(3)=12
62
63	j=1
64
65	do i=0,mpi_size-1
66
67	jj_begin_para(i)=j
68	jj_end_para(i)=j+jj_Nb_para(i)-1
69	j=j+jj_Nb_para(i)
70
71	enddo
72
73	jj_begin = jj_begin_para(mpi_rank)
74	jj_end = jj_end_para(mpi_rank)
75	jj_nb = jj_nb_para(mpi_rank)
76
77	ij_begin=(jj_begin-1)*iip1+1
78	ij_end=jj_end*iip1
79
80	if (mpi_rank.eq.0) then
81	pole_nord=.TRUE.
82	else
83	pole_nord=.FALSE.
84	endif
85
86	if (mpi_rank.eq.mpi_size-1) then
87	pole_sud=.TRUE.
88	else
89	pole_sud=.FALSE.
90	endif
91
92	print *,"jj_begin",jj_begin
93	print *,"jj_end",jj_end
94	print *,"ij_begin",ij_begin
95	print *,"ij_end",ij_end
96
97
98	end subroutine init_parallel
99
100
101	subroutine SetDistrib(jj_Nb_New)
102	implicit none
103
104	#include "dimensions90.h"
105	#include "paramet90.h"
106
107	INTEGER,dimension(0:MPI_Size-1) :: jj_Nb_New
108	INTEGER :: i
109
110	jj_Nb_Para=jj_Nb_New
111
112	jj_begin_para(0)=1
113	jj_end_para(0)=jj_Nb_Para(0)
114
115	do i=1,mpi_size-1
116
117	jj_begin_para(i)=jj_end_para(i-1)+1
118	jj_end_para(i)=jj_begin_para(i)+jj_Nb_para(i)-1
119
120	enddo
121
122	jj_begin = jj_begin_para(mpi_rank)
123	jj_end = jj_end_para(mpi_rank)
124	jj_nb = jj_nb_para(mpi_rank)
125
126	ij_begin=(jj_begin-1)*iip1+1
127	ij_end=jj_end*iip1
128
129	end subroutine SetDistrib
130
131
132
133
134	subroutine Finalize_parallel
135	implicit none
136
137	#include "dimensions90.h"
138	#include "paramet90.h"
139	integer :: ierr
140	integer :: i
141	include 'mpif.h'
142
143	deallocate(jj_begin_para)
144	deallocate(jj_end_para)
145	deallocate(jj_nb_para)
146
147	call MPI_FINALIZE(ierr)
148
149	end subroutine Finalize_parallel
150
151	subroutine Pack_Data(Field,ij,ll,row,Buffer)
152	implicit none
153
154	#include "dimensions90.h"
155	#include "paramet90.h"
156
157	integer, intent(in) :: ij,ll,row
158	real,dimension(ij,ll),intent(in) ::Field
159	real,dimension(lliip1row), intent(out) :: Buffer
160
161	integer :: Pos
162	integer :: i,l
163
164	Pos=0
165	do l=1,ll
166	do i=1,row*iip1
167	Pos=Pos+1
168	Buffer(Pos)=Field(i,l)
169	enddo
170	enddo
171
172	end subroutine Pack_data
173
174	subroutine Unpack_Data(Field,ij,ll,row,Buffer)
175	implicit none
176
177	#include "dimensions90.h"
178	#include "paramet90.h"
179
180	integer, intent(in) :: ij,ll,row
181	real,dimension(ij,ll),intent(out) ::Field
182	real,dimension(lliip1row), intent(in) :: Buffer
183
184	integer :: Pos
185	integer :: i,l
186
187	Pos=0
188
189	do l=1,ll
190	do i=1,row*iip1
191	Pos=Pos+1
192	Field(i,l)=Buffer(Pos)
193	enddo
194	enddo
195
196	end subroutine UnPack_data
197
198	subroutine exchange_hallo(Field,ij,ll,up,down)
199	USE Vampir
200	implicit none
201	#include "dimensions90.h"
202	#include "paramet90.h"
203	include 'mpif.h'
204
205	INTEGER :: ij,ll
206	REAL, dimension(ij,ll) :: Field
207	INTEGER :: up,down
208
209	INTEGER :: ierr
210	LOGICAL :: SendUp,SendDown
211	LOGICAL :: RecvUp,RecvDown
212	INTEGER, DIMENSION(4) :: Request
213	INTEGER, DIMENSION(MPI_STATUS_SIZE,4) :: Status
214	INTEGER :: NbRequest
215	REAL, dimension(:),allocatable :: Buffer_Send_up,Buffer_Send_down
216	REAL, dimension(:),allocatable :: Buffer_Recv_up,Buffer_Recv_down
217	INTEGER :: Buffer_size
218
219	call MPI_Barrier(MPI_COMM_WORLD,ierr)
220	call VTb(VThallo)
221
222	SendUp=.TRUE.
223	SendDown=.TRUE.
224	RecvUp=.TRUE.
225	RecvDown=.TRUE.
226
227	IF (pole_nord) THEN
228	SendUp=.FALSE.
229	RecvUp=.FALSE.
230	ENDIF
231
232	IF (pole_sud) THEN
233	SendDown=.FALSE.
234	RecvDown=.FALSE.
235	ENDIF
236
237	if (up.eq.0) then
238	SendDown=.FALSE.
239	RecvUp=.FALSE.
240	endif
241
242	if (down.eq.0) then
243	SendUp=.FALSE.
244	RecvDown=.FALSE.
245	endif
246
247	NbRequest=0
248
249	IF (SendUp) THEN
250	NbRequest=NbRequest+1
251	buffer_size=downiip1ll
252	allocate(Buffer_Send_up(Buffer_size))
253	call PACK_Data(Field(ij_begin,1),ij,ll,down,Buffer_Send_up)
254	call MPI_ISSEND(Buffer_send_up,Buffer_Size,MPI_REAL8,MPI_Rank-1,1, &
255	MPI_COMM_WORLD,Request(NbRequest),ierr)
256	ENDIF
257
258	IF (SendDown) THEN
259	NbRequest=NbRequest+1
260
261	buffer_size=upiip1ll
262	allocate(Buffer_Send_down(Buffer_size))
263	call PACK_Data(Field(ij_end+1-up*iip1,1),ij,ll,up,Buffer_send_down)
264
265	call MPI_ISSEND(Buffer_send_down,Buffer_Size,MPI_REAL8,MPI_Rank+1,1, &
266	MPI_COMM_WORLD,Request(NbRequest),ierr)
267	ENDIF
268
269
270	IF (RecvUp) THEN
271	NbRequest=NbRequest+1
272	buffer_size=upiip1ll
273	allocate(Buffer_recv_up(Buffer_size))
274
275	call MPI_IRECV(Buffer_recv_up,Buffer_size,MPI_REAL8,MPI_Rank-1,1, &
276	MPI_COMM_WORLD,Request(NbRequest),ierr)
277
278
279	ENDIF
280
281	IF (RecvDown) THEN
282	NbRequest=NbRequest+1
283	buffer_size=downiip1ll
284	allocate(Buffer_recv_down(Buffer_size))
285
286	call MPI_IRECV(Buffer_recv_down,Buffer_size,MPI_REAL8,MPI_Rank+1,1, &
287	MPI_COMM_WORLD,Request(NbRequest),ierr)
288
289
290	ENDIF
291
292	if (NbRequest > 0) call MPI_WAITALL(NbRequest,Request,Status,ierr)
293	IF (RecvUp) call Unpack_Data(Field(ij_begin-up*iip1,1),ij,ll,up,Buffer_Recv_up)
294	IF (RecvDown) call Unpack_Data(Field(ij_end+1,1),ij,ll,down,Buffer_Recv_down)
295
296	call VTe(VThallo)
297	call MPI_Barrier(MPI_COMM_WORLD,ierr)
298	RETURN
299
300	end subroutine exchange_Hallo
301
302
303	subroutine Gather_Field(Field,ij,ll,rank)
304	implicit none
305	#include "dimensions90.h"
306	#include "paramet90.h"
307	include 'mpif.h'
308
309	INTEGER :: ij,ll,rank
310	REAL, dimension(ij,ll) :: Field
311	REAL, dimension(:),allocatable :: Buffer_send
312	REAL, dimension(:),allocatable :: Buffer_Recv
313	INTEGER, dimension(0:MPI_Size-1) :: Recv_count, displ
314	INTEGER :: ierr
315	INTEGER ::i
316
317	if (ij==ip1jmp1) then
318	allocate(Buffer_send(iip1ll(jj_end-jj_begin+1)))
319	call Pack_Data(Field(ij_begin,1),ij,ll,jj_end-jj_begin+1,Buffer_send)
320	else if (ij==ip1jm) then
321	allocate(Buffer_send(iip1ll(min(jj_end,jjm)-jj_begin+1)))
322	call Pack_Data(Field(ij_begin,1),ij,ll,min(jj_end,jjm)-jj_begin+1,Buffer_send)
323	else
324	print *,ij
325	stop 'erreur dans Gather_Field'
326	endif
327
328	if (MPI_Rank==rank) then
329	allocate(Buffer_Recv(ij*ll))
330	do i=0,MPI_Size-1
331
332	if (ij==ip1jmp1) then
333	Recv_count(i)=(jj_end_para(i)-jj_begin_para(i)+1)lliip1
334	else if (ij==ip1jm) then
335	Recv_count(i)=(min(jj_end_para(i),jjm)-jj_begin_para(i)+1)lliip1
336	else
337	stop 'erreur dans Gather_Field'
338	endif
339
340	if (i==0) then
341	displ(i)=0
342	else
343	displ(i)=displ(i-1)+Recv_count(i-1)
344	endif
345
346	enddo
347
348	endif
349
350	call MPI_GATHERV(Buffer_send,(min(ij_end,ij)-ij_begin+1)*ll,MPI_REAL8, &
351	Buffer_Recv,Recv_count,displ,MPI_REAL8,rank,MPI_COMM_WORLD,ierr)
352
353	if (MPI_Rank==rank) then
354
355	if (ij==ip1jmp1) then
356	do i=0,MPI_Size-1
357	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
358	jj_end_para(i)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
359	enddo
360	else if (ij==ip1jm) then
361	do i=0,MPI_Size-1
362	call Unpack_Data(Field((jj_begin_para(i)-1)*iip1+1,1),ij,ll, &
363	min(jj_end_para(i),jjm)-jj_begin_para(i)+1,Buffer_Recv(displ(i)+1))
364	enddo
365	endif
366
367	endif
368
369	end subroutine Gather_Field
370
371	subroutine AllGather_Field(Field,ij,ll)
372	implicit none
373	#include "dimensions90.h"
374	#include "paramet90.h"
375	include 'mpif.h'
376
377	INTEGER :: ij,ll
378	REAL, dimension(ij,ll) :: Field
379	INTEGER :: ierr
380
381	call Gather_Field(Field,ij,ll,0)
382	call MPI_BCAST(Field,ij*ll,MPI_REAL8,0,MPI_COMM_WORLD)
383
384	end subroutine AllGather_Field
385
386	subroutine Broadcast_Field(Field,ij,ll,rank)
387	implicit none
388	#include "dimensions90.h"
389	#include "paramet90.h"
390	include 'mpif.h'
391
392	INTEGER :: ij,ll
393	REAL, dimension(ij,ll) :: Field
394	INTEGER :: rank
395	INTEGER :: ierr
396
397	call MPI_BCAST(Field,ij*ll,MPI_REAL8,rank,MPI_COMM_WORLD)
398
399	end subroutine Broadcast_Field
400
401
402	/*
403	Subroutine verif_hallo(Field,ij,ll,up,down)
404	implicit none
405	#include "dimensions90.h"
406	#include "paramet90.h"
407	include 'mpif.h'
408
409	INTEGER :: ij,ll
410	REAL, dimension(ij,ll) :: Field
411	INTEGER :: up,down
412
413	REAL,dimension(ij,ll): NewField
414
415	NewField=0
416
417	ijb=ij_begin
418	ije=ij_end
419	if (pole_nord)
420	NewField(ij_be
421	*/
422	end module parallel

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