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source: palm/trunk/SOURCE/pmc_client.f90 @ 1799

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1	MODULE pmc_client
2
3	!--------------------------------------------------------------------------------!
4	! This file is part of PALM.
5	!
6	! PALM is free software: you can redistribute it and/or modify it under the terms
7	! of the GNU General Public License as published by the Free Software Foundation,
8	! either version 3 of the License, or (at your option) any later version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2015 Leibniz Universitaet Hannover
18	!--------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: pmc_client.f90 1798 2016-03-21 16:59:17Z gronemeier $
27	!
28	! 1797 2016-03-21 16:50:28Z raasch
29	! introduction of different datatransfer modes
30	!
31	! 1791 2016-03-11 10:41:25Z raasch
32	! Debug write-statement commented out
33	!
34	! 1786 2016-03-08 05:49:27Z raasch
35	! change in client-server data transfer: server now gets data from client
36	! instead that client put's it to the server
37	!
38	! 1783 2016-03-06 18:36:17Z raasch
39	! Bugfix: wrong data-type in MPI_WIN_CREATE replaced
40	!
41	! 1779 2016-03-03 08:01:28Z raasch
42	! kind=dp replaced by wp, dim_order removed
43	! array management changed from linked list to sequential loop
44	!
45	! 1764 2016-02-28 12:45:19Z raasch
46	! cpp-statement added (nesting can only be used in parallel mode),
47	! all kinds given in PALM style
48	!
49	! 1762 2016-02-25 12:31:13Z hellstea
50	! Initial revision by K. Ketelsen
51	!
52	! Description:
53	! ------------
54	!
55	! Client part of Palm Model Coupler
56	!------------------------------------------------------------------------------!
57
58	#if defined( __parallel )
59
60	use, intrinsic :: iso_c_binding
61
62	#if defined( __lc )
63	USE MPI
64	#else
65	INCLUDE "mpif.h"
66	#endif
67	USE kinds
68	USE PMC_general, ONLY: ClientDef, DA_NameDef, DA_Namelen, PMC_STATUS_OK, PMC_DA_NAME_ERR, PeDef, ArrayDef, &
69	DA_Desclen, DA_Namelen, PMC_G_SetName, PMC_MAX_ARRAY
70	USE PMC_handle_communicator, ONLY: m_model_comm,m_model_rank,m_model_npes, m_to_server_comm
71	USE PMC_MPI_wrapper, ONLY: PMC_Send_to_Server, PMC_Recv_from_Server, PMC_Time, &
72	PMC_Bcast, PMC_Inter_Bcast, PMC_Alloc_mem
73	IMPLICIT none
74	PRIVATE
75	SAVE
76
77	Type(ClientDef) :: me
78
79	INTEGER :: next_array_in_list = 0
80	INTEGER :: myIndex = 0 !Counter and unique number for Data Arrays
81
82	! INTERFACE section
83
84	INTERFACE PMC_ClientInit
85	MODULE procedure PMC_ClientInit
86	END INTERFACE PMC_ClientInit
87
88	INTERFACE PMC_Set_DataArray_Name
89	MODULE procedure PMC_Set_DataArray_Name
90	MODULE procedure PMC_Set_DataArray_Name_LastEntry
91	END INTERFACE PMC_Set_DataArray_Name
92
93	INTERFACE PMC_C_Get_2D_index_list
94	MODULE procedure PMC_C_Get_2D_index_list
95	END INTERFACE PMC_C_Get_2D_index_list
96
97	INTERFACE PMC_C_clear_next_array_list
98	MODULE procedure PMC_C_clear_next_array_list
99	END INTERFACE PMC_C_clear_next_array_list
100
101	INTERFACE PMC_C_GetNextArray
102	MODULE procedure PMC_C_GetNextArray
103	END INTERFACE PMC_C_GetNextArray
104
105	INTERFACE PMC_C_Set_DataArray
106	MODULE procedure PMC_C_Set_DataArray_2d
107	MODULE procedure PMC_C_Set_DataArray_3d
108	END INTERFACE PMC_C_Set_DataArray
109
110	INTERFACE PMC_C_setInd_and_AllocMem
111	MODULE procedure PMC_C_setInd_and_AllocMem
112	END INTERFACE PMC_C_setInd_and_AllocMem
113
114	INTERFACE PMC_C_GetBuffer
115	MODULE procedure PMC_C_GetBuffer
116	END INTERFACE PMC_C_GetBuffer
117
118	INTERFACE PMC_C_PutBuffer
119	MODULE procedure PMC_C_PutBuffer
120	END INTERFACE PMC_C_PutBuffer
121
122	! Public section
123
124	PUBLIC PMC_ClientInit , PMC_Set_DataArray_Name, PMC_C_Get_2D_index_list
125	PUBLIC PMC_C_GetNextArray, PMC_C_Set_DataArray, PMC_C_clear_next_array_list
126	PUBLIC PMC_C_setInd_and_AllocMem , PMC_C_GetBuffer, PMC_C_PutBuffer
127
128	CONTAINS
129
130	SUBROUTINE PMC_ClientInit
131	IMPLICIT none
132
133	INTEGER :: i
134	INTEGER :: istat
135
136
137	! Tailor MPI environment
138
139	me%model_comm = m_model_comm
140	me%inter_comm = m_to_server_comm
141
142	! Get rank and size
143	CALL MPI_Comm_rank (me%model_comm, me%model_rank, istat);
144	CALL MPI_Comm_size (me%model_comm, me%model_npes, istat);
145	CALL MPI_Comm_remote_size (me%inter_comm, me%inter_npes, istat);
146
147	! intra communicater is used for MPI_Get
148	CALL MPI_Intercomm_merge (me%inter_comm, .true., me%intra_comm, istat);
149	CALL MPI_Comm_rank (me%intra_comm, me%intra_rank, istat);
150	ALLOCATE (me%PEs(me%inter_npes))
151
152	!
153	!-- Allocate for all Server PEs an array of TYPE ArrayDef to store information of transfer array
154	do i=1,me%inter_npes
155	ALLOCATE(me%PEs(i)%array_list(PMC_MAX_ARRAY))
156	end do
157
158	! if(me%model_rank == 0) write(0,'(a,5i6)') 'PMC_ClientInit ',me%model_rank,me%model_npes,me%inter_npes,me%intra_rank
159
160	return
161	END SUBROUTINE PMC_ClientInit
162
163	SUBROUTINE PMC_Set_DataArray_Name (ServerArrayDesc, ServerArrayName, ClientArrayDesc, ClientArrayName, istat)
164	IMPLICIT none
165	character(len=*),INTENT(IN) :: ServerArrayName
166	character(len=*),INTENT(IN) :: ServerArrayDesc
167	character(len=*),INTENT(IN) :: ClientArrayName
168	character(len=*),INTENT(IN) :: ClientArrayDesc
169	INTEGER,INTENT(OUT) :: istat
170
171	!-- local variables
172	type(DA_NameDef) :: myName
173	INTEGER :: myPe
174	INTEGER :: my_AddiArray=0
175
176	istat = PMC_STATUS_OK
177	if(len(trim(ServerArrayName)) > DA_Namelen .or. &
178	len(trim(ClientArrayName)) > DA_Namelen) then !Name too long
179	istat = PMC_DA_NAME_ERR
180	end if
181
182	if(m_model_rank == 0) then
183	myIndex = myIndex+1
184	myName%couple_index = myIndex
185	myName%ServerDesc = trim(ServerArrayDesc)
186	myName%NameOnServer = trim(ServerArrayName)
187	myName%ClientDesc = trim(ClientArrayDesc)
188	myName%NameOnClient = trim(ClientArrayName)
189	end if
190
191	! Broadcat to all Client PEs
192
193	CALL PMC_Bcast ( myName%couple_index, 0, comm=m_model_comm)
194	CALL PMC_Bcast ( myName%ServerDesc, 0, comm=m_model_comm)
195	CALL PMC_Bcast ( myName%NameOnServer, 0, comm=m_model_comm)
196	CALL PMC_Bcast ( myName%ClientDesc, 0, comm=m_model_comm)
197	CALL PMC_Bcast ( myName%NameOnClient, 0, comm=m_model_comm)
198
199	! Broadcat to all Server PEs
200
201	if(m_model_rank == 0) then
202	myPE = MPI_ROOT
203	else
204	myPE = MPI_PROC_NULL
205	endif
206	CALL PMC_Bcast ( myName%couple_index, myPE, comm=m_to_server_comm)
207	CALL PMC_Bcast ( myName%ServerDesc, myPE, comm=m_to_server_comm)
208	CALL PMC_Bcast ( myName%NameOnServer, myPE, comm=m_to_server_comm)
209	CALL PMC_Bcast ( myName%ClientDesc, myPE, comm=m_to_server_comm)
210	CALL PMC_Bcast ( myName%NameOnClient, myPE, comm=m_to_server_comm)
211
212	CALL PMC_G_SetName (me, myName%couple_index, myName%NameOnClient)
213
214	return
215	END SUBROUTINE PMC_Set_DataArray_Name
216
217	SUBROUTINE PMC_Set_DataArray_Name_LastEntry (LastEntry)
218	IMPLICIT none
219	LOGICAL,INTENT(IN),optional :: LastEntry
220
221	!-- local variables
222	type(DA_NameDef) :: myName
223	INTEGER :: myPe
224
225	myName%couple_index = -1
226
227	if(m_model_rank == 0) then
228	myPE = MPI_ROOT
229	else
230	myPE = MPI_PROC_NULL
231	endif
232	CALL PMC_Bcast ( myName%couple_index, myPE, comm=m_to_server_comm)
233
234	return
235	END SUBROUTINE PMC_Set_DataArray_Name_LastEntry
236
237	SUBROUTINE PMC_C_Get_2D_index_list
238	IMPLICIT none
239
240	INTEGER :: i,j,i2,nr,ierr
241	INTEGER :: dummy
242	INTEGER :: indWin !: MPI window object
243	INTEGER :: indWin2 !: MPI window object
244	INTEGER(KIND=MPI_ADDRESS_KIND) :: win_size !: Size of MPI window 1 (in bytes)
245	INTEGER(KIND=MPI_ADDRESS_KIND) :: disp !: Displacement Unit (Integer = 4, floating poit = 8
246	INTEGER,DIMENSION(me%inter_npes*2) :: NrEle !: Number of Elements of a horizontal slice
247	TYPE(PeDef),POINTER :: aPE !: Pointer to PeDef structure
248	INTEGER(KIND=MPI_ADDRESS_KIND) :: WinSize !: Size of MPI window 2 (in bytes)
249	INTEGER,DIMENSION(:),POINTER :: myInd
250
251	! CALL PMC_C_CGet_Rem_index_list
252
253	win_size = c_sizeof(dummy)
254	CALL MPI_Win_create (dummy, win_size, iwp, MPI_INFO_NULL, me%intra_comm, indWin, ierr);
255	CALL MPI_Win_fence (0, indWin, ierr) ! Open Window on Server side
256	CALL MPI_Win_fence (0, indWin, ierr) ! Close Window on Server Side and opem on Client side
257
258	do i=1,me%inter_npes
259	disp = me%model_rank*2
260	CALL MPI_Get (NrEle((i-1)*2+1),2,MPI_INTEGER,i-1,disp,2,MPI_INTEGER,indWin, ierr)
261	end do
262	CALL MPI_Win_fence (0, indWin, ierr) ! MPI_get is Non-blocking -> data in NrEle is not available until MPI_fence CALL
263
264	WinSize = 0
265	do i=1,me%inter_npes !Allocate memory for index array
266	aPE => me%PEs(i)
267	i2 = (i-1)*2+1
268	nr = NrEle(i2+1)
269	if(nr > 0) then
270	ALLOCATE(aPE%locInd(nr))
271	else
272	NULLIFY (aPE%locInd)
273	endif
274	WinSize = max(nr,WinSize) !Maximum window size
275	end do
276
277	ALLOCATE(myInd(2*WinSize))
278	WinSize = 1
279
280	! local Buffer used in MPI_Get can but must not be inside the MPI Window
281	! Here, we use a dummy for MPI Window because the server PEs do not access the RMA window via MPI_get or MPI_Put
282
283	CALL MPI_Win_create (dummy, WinSize, iwp, MPI_INFO_NULL, me%intra_comm, indWin2, ierr);
284
285	CALL MPI_Win_fence (0, indWin2, ierr) ! MPI_get is Non-blocking -> data in NrEle is not available until MPI_fence CALL
286	CALL MPI_Win_fence (0, indWin2, ierr) ! MPI_get is Non-blocking -> data in NrEle is not available until MPI_fence CALL
287
288	do i=1,me%inter_npes
289	aPE => me%PEs(i)
290	nr = NrEle(i*2)
291	if(nr > 0 ) then
292	disp = NrEle(2*(i-1)+1)
293	CALL MPI_Win_lock (MPI_LOCK_SHARED , i-1, 0, indWin2, ierr)
294	CALL MPI_Get (myInd,2nr,MPI_INTEGER,i-1,disp,2nr,MPI_INTEGER,indWin2, ierr)
295	CALL MPI_Win_unlock (i-1, indWin2, ierr)
296	do j=1,nr
297	aPE%locInd(j)%i = myInd(2*j-1)
298	aPE%locInd(j)%j = myInd(2*j)
299	end do
300	aPE%NrEle = nr
301	else
302	aPE%NrEle = -1
303	end if
304	end do
305
306	CALL MPI_Barrier(me%intra_comm, ierr) ! Dont know why, but this barrier is necessary before we can free the windows
307
308	CALL MPI_Win_free(indWin, ierr);
309	CALL MPI_Win_free(indWin2, ierr);
310	DEALLOCATE (myInd)
311
312	return
313	END SUBROUTINE PMC_C_Get_2D_index_list
314
315	SUBROUTINE PMC_C_clear_next_array_list
316	IMPLICIT none
317
318	next_array_in_list = 0
319
320	return
321	END SUBROUTINE PMC_C_clear_next_array_list
322
323	! List handling is still required to get minimal interaction with pmc_interface
324	LOGICAL function PMC_C_GetNextArray (myName)
325	character(len=*),INTENT(OUT) :: myName
326
327	!-- local variables
328	TYPE(PeDef),POINTER :: aPE
329	TYPE(ArrayDef),POINTER :: ar
330
331	next_array_in_list = next_array_in_list+1
332
333	!-- Array Names are the same on all client PE, so take first PE to get the name
334	aPE => me%PEs(1)
335
336	if(next_array_in_list > aPE%Nr_arrays) then
337	PMC_C_GetNextArray = .false. !all arrays done
338	return
339	end if
340
341	ar => aPE%array_list(next_array_in_list)
342
343	myName = ar%name
344
345	PMC_C_GetNextArray = .true. ! Return true if legal array
346	return
347	END function PMC_C_GetNextArray
348
349	SUBROUTINE PMC_C_Set_DataArray_2d (array)
350
351	IMPLICIT none
352
353	REAL(wp), INTENT(IN) ,DIMENSION(:,:) :: array
354
355	INTEGER :: NrDims
356	INTEGER,DIMENSION (4) :: dims
357	TYPE(c_ptr) :: array_adr
358	INTEGER :: i
359	TYPE(PeDef),POINTER :: aPE
360	TYPE(ArrayDef),POINTER :: ar
361
362
363	dims = 1
364
365	NrDims = 2
366	dims(1) = size(array,1)
367	dims(2) = size(array,2)
368
369	array_adr = c_loc(array)
370
371	do i=1,me%inter_npes
372	aPE => me%PEs(i)
373	ar => aPE%array_list(next_array_in_list)
374	ar%NrDims = NrDims
375	ar%A_dim = dims
376	ar%data = array_adr
377	end do
378
379	return
380	END SUBROUTINE PMC_C_Set_DataArray_2d
381
382	SUBROUTINE PMC_C_Set_DataArray_3d (array)
383
384	IMPLICIT none
385
386	REAL(wp),INTENT(IN),DIMENSION(:,:,:) :: array
387
388	INTEGER :: NrDims
389	INTEGER,DIMENSION (4) :: dims
390	TYPE(c_ptr) :: array_adr
391	INTEGER :: i
392	TYPE(PeDef),POINTER :: aPE
393	TYPE(ArrayDef),POINTER :: ar
394
395	dims = 1
396
397	NrDims = 3
398	dims(1) = size(array,1)
399	dims(2) = size(array,2)
400	dims(3) = size(array,3)
401
402	array_adr = c_loc(array)
403
404	do i=1,me%inter_npes
405	aPE => me%PEs(i)
406	ar => aPE%array_list(next_array_in_list)
407	ar%NrDims = NrDims
408	ar%A_dim = dims
409	ar%data = array_adr
410	end do
411
412	return
413	END SUBROUTINE PMC_C_Set_DataArray_3d
414
415	SUBROUTINE PMC_C_setInd_and_AllocMem
416
417	IMPLICIT none
418
419	!-- naming convention: appending _sc -> server to client transfer
420	!-- _cs -> client to server transfer
421	!-- Recv -> server to client transfer
422	!-- Send -> client to server transfer
423
424	INTEGER :: i, istat, ierr, j
425	INTEGER,PARAMETER :: NoINdex=-1
426	INTEGER :: rcount
427	INTEGER :: arlen, myIndex, tag
428	INTEGER(idp) :: bufsize ! Size of MPI data Window
429	TYPE(PeDef),POINTER :: aPE
430	TYPE(ArrayDef),POINTER :: ar
431	INTEGER,DIMENSION(1024) :: req
432	character(len=DA_Namelen) :: myName
433	Type(c_ptr) :: base_ptr
434	REAL(kind=wp),DIMENSION(:),POINTER,save :: base_array_sc !Base array
435	REAL(kind=wp),DIMENSION(:),POINTER,save :: base_array_cs !Base array
436	INTEGER(KIND=MPI_ADDRESS_KIND) :: WinSize
437
438	myIndex = 0
439	bufsize = 8
440
441	!-- Server to client direction
442
443	!-- First stride, Compute size and set index
444
445	do i=1,me%inter_npes
446	aPE => me%PEs(i)
447	tag = 200
448
449	do j=1,aPE%Nr_arrays
450	ar => aPE%array_list(j)
451
452	! Receive Index from client
453	tag = tag+1
454	CALL MPI_Recv (myIndex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, MPI_STATUS_IGNORE, ierr)
455
456	if(ar%NrDims == 3) then
457	bufsize = max(bufsize,ar%A_dim(1)ar%A_dim(2)ar%A_dim(3)) ! determine max, because client buffer is allocated only once
458	else
459	bufsize = max(bufsize,ar%A_dim(1)*ar%A_dim(2))
460	end if
461	ar%RecvIndex = myIndex
462
463	end do
464	end do
465
466
467	!-- Create RMA (One Sided Communication) data buffer
468	!-- The buffer for MPI_Get can be PE local, i.e. it can but must not be part of the MPI RMA window
469
470	CALL PMC_Alloc_mem (base_array_sc, bufsize, base_ptr)
471	me%TotalBufferSize = bufsize*wp ! Total buffer size in Byte
472
473	!-- Second stride, Set Buffer pointer
474
475	do i=1,me%inter_npes
476	aPE => me%PEs(i)
477
478	do j=1,aPE%Nr_arrays
479	ar => aPE%array_list(j)
480	ar%RecvBuf = base_ptr
481	end do
482	end do
483
484	!-- Client to server direction
485
486	myIndex = 1
487	rCount = 0
488	bufsize = 8
489
490	do i=1,me%inter_npes
491	aPE => me%PEs(i)
492	tag = 300
493	do j=1,aPE%Nr_arrays
494	ar => aPE%array_list(j)
495	if(ar%NrDims == 2) then
496	arlen = aPE%NrEle ! 2D
497	else if(ar%NrDims == 3) then
498	arlen = aPE%NrEle*ar%A_dim(1) ! 3D
499	end if
500
501	tag = tag+1
502	rCount = rCount+1
503	if(aPE%NrEle > 0) then
504	CALL MPI_Isend (myIndex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, req(rCount),ierr)
505	ar%SendIndex = myIndex
506	else
507	CALL MPI_Isend (NoIndex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, req(rCount),ierr)
508	ar%SendIndex = NoIndex
509	end if
510
511	if(rCount == 1024) then ! Maximum of 1024 outstanding requests
512	CALL MPI_Waitall (rCount, req, MPI_STATUSES_IGNORE, ierr)
513	rCount = 0;
514	end if
515
516	if(aPE%NrEle > 0) then
517	ar%SendSize = arlen
518	myIndex = myIndex+arlen
519	bufsize = bufsize+arlen
520	end if
521	end do
522	if(rCount > 0) then ! Wait for all send completed
523	CALL MPI_Waitall (rCount, req, MPI_STATUSES_IGNORE, ierr)
524	end if
525	end do
526
527	!-- Create RMA (One Sided Communication) window for data buffer client to server transfer
528	!-- The buffer of MPI_Get (counter part of transfer) can be PE-local, i.e. it can but must not be part of the MPI RMA window
529	!-- Only one RMA window is required to prepare the data for server -> client transfer on the server side and
530	!-- for client -> server transfer on the client side
531
532	CALL PMC_Alloc_mem (base_array_cs, bufsize)
533	me%TotalBufferSize = bufsize*wp !Total buffer size in Byte
534
535	WinSize = me%TotalBufferSize
536	CALL MPI_Win_create (base_array_cs, WinSize, wp, MPI_INFO_NULL, me%intra_comm, me%win_server_client, ierr);
537	CALL MPI_Win_fence (0, me%win_server_client, ierr); ! Open Window to set data
538	CALL MPI_Barrier(me%intra_comm, ierr)
539
540	!-- Second stride, Set Buffer pointer
541
542	do i=1,me%inter_npes
543	aPE => me%PEs(i)
544
545	do j=1,aPE%Nr_arrays
546	ar => aPE%array_list(j)
547	if(aPE%NrEle > 0) then
548	ar%SendBuf = c_loc(base_array_cs(ar%SendIndex))
549	if(ar%SendIndex+ar%SendSize > bufsize) then
550	write(0,'(a,i4,4i7,1x,a)') 'Client Buffer too small ',i,ar%SendIndex,ar%SendSize,ar%SendIndex+ar%SendSize,bufsize,trim(ar%name)
551	CALL MPI_Abort (MPI_COMM_WORLD, istat, ierr)
552	end if
553	end if
554	end do
555	end do
556
557	return
558	END SUBROUTINE PMC_C_setInd_and_AllocMem
559
560	SUBROUTINE PMC_C_GetBuffer (WaitTime)
561
562	IMPLICIT none
563
564	REAL(wp), INTENT(OUT), optional :: WaitTime
565
566	!-- local variables
567	INTEGER :: ip, ij, ierr, j
568	INTEGER :: nr ! Number of Elements to getb from server
569	INTEGER :: myIndex
570	REAL(wp) :: t1,t2
571	TYPE(PeDef),POINTER :: aPE
572	TYPE(ArrayDef),POINTER :: ar
573	INTEGER,DIMENSION(1) :: buf_shape
574	REAL(wp),POINTER,DIMENSION(:) :: buf
575	REAL(wp),POINTER,DIMENSION(:,:) :: data_2d
576	REAL(wp),POINTER,DIMENSION(:,:,:) :: data_3d
577	character(len=DA_Namelen) :: myName
578	INTEGER(kind=MPI_ADDRESS_KIND) :: target_disp
579
580	!
581	!-- Synchronization of the model is done in pmci_client_synchronize and pmci_server_synchronize
582	!-- Therefor the RMA window can be filled without sychronization at this point and a barrier
583	!-- is not necessary
584	!-- Please note that WaitTime has to be set in PMC_S_FillBuffer AND PMC_C_GetBuffer
585	if(present(WaitTime)) then
586	t1 = PMC_Time()
587	CALL MPI_Barrier(me%intra_comm, ierr)
588	t2 = PMC_Time()
589	WaitTime = t2-t1
590	end if
591
592	CALL MPI_Barrier(me%intra_comm, ierr) ! Wait for buffer is filled
593
594	do ip=1,me%inter_npes
595	aPE => me%PEs(ip)
596
597	do j=1,aPE%Nr_arrays
598	ar => aPE%array_list(j)
599	if(ar%NrDims == 2) then
600	nr = aPE%NrEle
601	else if(ar%NrDims == 3) then
602	nr = aPE%NrEle*ar%A_dim(1)
603	end if
604
605	buf_shape(1) = nr
606	CALL c_f_pointer(ar%RecvBuf, buf, buf_shape)
607	!
608	!-- MPI passive target RMA
609	if(nr > 0) then
610	target_disp = (ar%RecvIndex-1)
611	CALL MPI_Win_lock (MPI_LOCK_SHARED , ip-1, 0, me%win_server_client, ierr)
612	CALL MPI_Get (buf, nr, MPI_REAL, ip-1, target_disp, nr, MPI_REAL, me%win_server_client, ierr)
613	CALL MPI_Win_unlock (ip-1, me%win_server_client, ierr)
614	end if
615
616	myIndex = 1
617	if(ar%NrDims == 2) then
618
619	CALL c_f_pointer(ar%data, data_2d, ar%A_dim(1:2))
620	do ij=1,aPE%NrEle
621	data_2d(aPE%locInd(ij)%j,aPE%locInd(ij)%i) = buf(myIndex)
622	myIndex = myIndex+1
623	end do
624	else if(ar%NrDims == 3) then
625	CALL c_f_pointer(ar%data, data_3d, ar%A_dim(1:3))
626	do ij=1,aPE%NrEle
627	data_3d(:,aPE%locInd(ij)%j,aPE%locInd(ij)%i) = buf(myIndex:myIndex+ar%A_dim(1)-1)
628	myIndex = myIndex+ar%A_dim(1)
629	end do
630	end if
631
632	end do
633	end do
634	return
635	END SUBROUTINE PMC_C_GetBuffer
636
637	SUBROUTINE PMC_C_PutBuffer (WaitTime)
638
639	IMPLICIT none
640
641	REAL(wp), INTENT(OUT), optional :: WaitTime
642
643	!-- local variables
644	INTEGER :: ip, ij, ierr, j
645	INTEGER :: nr ! Number of Elements to getb from server
646	INTEGER :: myIndex
647	REAL(wp) :: t1,t2
648	TYPE(PeDef),POINTER :: aPE
649	TYPE(ArrayDef),POINTER :: ar
650	INTEGER,DIMENSION(1) :: buf_shape
651	REAL(wp),POINTER,DIMENSION(:) :: buf
652	REAL(wp),POINTER,DIMENSION(:,:) :: data_2d
653	REAL(wp),POINTER,DIMENSION(:,:,:) :: data_3d
654	character(len=DA_Namelen) :: myName
655	INTEGER(kind=MPI_ADDRESS_KIND) :: target_disp
656
657	t1 = PMC_Time()
658	CALL MPI_Barrier(me%intra_comm, ierr) ! Wait for empty buffer
659	t2 = PMC_Time()
660	if(present(WaitTime)) WaitTime = t2-t1
661
662	do ip=1,me%inter_npes
663	aPE => me%PEs(ip)
664
665	do j=1,aPE%Nr_arrays
666	ar => aPE%array_list(j)
667	myIndex=1
668	if(ar%NrDims == 2) then
669	buf_shape(1) = aPE%NrEle
670	CALL c_f_pointer(ar%SendBuf, buf, buf_shape)
671	CALL c_f_pointer(ar%data, data_2d, ar%A_dim(1:2))
672	do ij=1,aPE%NrEle
673	buf(myIndex) = data_2d(aPE%locInd(ij)%j,aPE%locInd(ij)%i)
674	myIndex = myIndex+1
675	end do
676	else if(ar%NrDims == 3) then
677	buf_shape(1) = aPE%NrEle*ar%A_dim(1)
678	CALL c_f_pointer(ar%SendBuf, buf, buf_shape)
679	CALL c_f_pointer(ar%data, data_3d, ar%A_dim(1:3))
680	do ij=1,aPE%NrEle
681	buf(myIndex:myIndex+ar%A_dim(1)-1) = data_3d(:,aPE%locInd(ij)%j,aPE%locInd(ij)%i)
682	myIndex = myIndex+ar%A_dim(1)
683	end do
684	end if
685	end do
686	end do
687
688
689	! CALL MPI_Win_fence (0, me%win_server_client, ierr) ! Fence might do it, test later
690	CALL MPI_Barrier(me%intra_comm, ierr) ! buffer is filled
691
692	return
693	END SUBROUTINE PMC_C_PutBuffer
694
695	#endif
696	END MODULE pmc_client

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