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source: palm/trunk/SOURCE/pmc_client_mod.f90 @ 1850

Last change on this file since 1850 was 1850, checked in by maronga, 8 years ago
added _mod string to several filenames to meet the naming convection for modules
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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 1997-2016 Leibniz Universitaet Hannover
18	!--------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	! Module renamed
23	!
24	!
25	! Former revisions:
26	! -----------------
27	! $Id: pmc_client_mod.f90 1850 2016-04-08 13:29:27Z maronga $
28	!
29	! 1833 2016-04-07 14:23:03Z raasch
30	! gfortran requires pointer attributes for some array declarations,
31	! long line wrapped
32	!
33	! 1808 2016-04-05 19:44:00Z raasch
34	! MPI module used by default on all machines
35	!
36	! 1797 2016-03-21 16:50:28Z raasch
37	! introduction of different datatransfer modes
38	!
39	! 1791 2016-03-11 10:41:25Z raasch
40	! Debug write-statement commented out
41	!
42	! 1786 2016-03-08 05:49:27Z raasch
43	! change in client-server data transfer: server now gets data from client
44	! instead that client put's it to the server
45	!
46	! 1783 2016-03-06 18:36:17Z raasch
47	! Bugfix: wrong data-type in MPI_WIN_CREATE replaced
48	!
49	! 1779 2016-03-03 08:01:28Z raasch
50	! kind=dp replaced by wp, dim_order removed
51	! array management changed from linked list to sequential loop
52	!
53	! 1764 2016-02-28 12:45:19Z raasch
54	! cpp-statement added (nesting can only be used in parallel mode),
55	! all kinds given in PALM style
56	!
57	! 1762 2016-02-25 12:31:13Z hellstea
58	! Initial revision by K. Ketelsen
59	!
60	! Description:
61	! ------------
62	!
63	! Client part of Palm Model Coupler
64	!------------------------------------------------------------------------------!
65
66	#if defined( __parallel )
67
68	use, intrinsic :: iso_c_binding
69
70	#if defined( __mpifh )
71	INCLUDE "mpif.h"
72	#else
73	USE MPI
74	#endif
75	USE kinds
76	USE PMC_general, ONLY: ClientDef, DA_NameDef, DA_Namelen, PMC_STATUS_OK, PMC_DA_NAME_ERR, PeDef, ArrayDef, &
77	DA_Desclen, DA_Namelen, PMC_G_SetName, PMC_MAX_ARRAY
78	USE PMC_handle_communicator, ONLY: m_model_comm,m_model_rank,m_model_npes, m_to_server_comm
79	USE PMC_MPI_wrapper, ONLY: PMC_Send_to_Server, PMC_Recv_from_Server, PMC_Time, &
80	PMC_Bcast, PMC_Inter_Bcast, PMC_Alloc_mem
81	IMPLICIT none
82	PRIVATE
83	SAVE
84
85	Type(ClientDef) :: me
86
87	INTEGER :: next_array_in_list = 0
88	INTEGER :: myIndex = 0 !Counter and unique number for Data Arrays
89
90	! INTERFACE section
91
92	INTERFACE PMC_ClientInit
93	MODULE procedure PMC_ClientInit
94	END INTERFACE PMC_ClientInit
95
96	INTERFACE PMC_Set_DataArray_Name
97	MODULE procedure PMC_Set_DataArray_Name
98	MODULE procedure PMC_Set_DataArray_Name_LastEntry
99	END INTERFACE PMC_Set_DataArray_Name
100
101	INTERFACE PMC_C_Get_2D_index_list
102	MODULE procedure PMC_C_Get_2D_index_list
103	END INTERFACE PMC_C_Get_2D_index_list
104
105	INTERFACE PMC_C_clear_next_array_list
106	MODULE procedure PMC_C_clear_next_array_list
107	END INTERFACE PMC_C_clear_next_array_list
108
109	INTERFACE PMC_C_GetNextArray
110	MODULE procedure PMC_C_GetNextArray
111	END INTERFACE PMC_C_GetNextArray
112
113	INTERFACE PMC_C_Set_DataArray
114	MODULE procedure PMC_C_Set_DataArray_2d
115	MODULE procedure PMC_C_Set_DataArray_3d
116	END INTERFACE PMC_C_Set_DataArray
117
118	INTERFACE PMC_C_setInd_and_AllocMem
119	MODULE procedure PMC_C_setInd_and_AllocMem
120	END INTERFACE PMC_C_setInd_and_AllocMem
121
122	INTERFACE PMC_C_GetBuffer
123	MODULE procedure PMC_C_GetBuffer
124	END INTERFACE PMC_C_GetBuffer
125
126	INTERFACE PMC_C_PutBuffer
127	MODULE procedure PMC_C_PutBuffer
128	END INTERFACE PMC_C_PutBuffer
129
130	! Public section
131
132	PUBLIC PMC_ClientInit , PMC_Set_DataArray_Name, PMC_C_Get_2D_index_list
133	PUBLIC PMC_C_GetNextArray, PMC_C_Set_DataArray, PMC_C_clear_next_array_list
134	PUBLIC PMC_C_setInd_and_AllocMem , PMC_C_GetBuffer, PMC_C_PutBuffer
135
136	CONTAINS
137
138	SUBROUTINE PMC_ClientInit
139	IMPLICIT none
140
141	INTEGER :: i
142	INTEGER :: istat
143
144
145	! Tailor MPI environment
146
147	me%model_comm = m_model_comm
148	me%inter_comm = m_to_server_comm
149
150	! Get rank and size
151	CALL MPI_Comm_rank (me%model_comm, me%model_rank, istat);
152	CALL MPI_Comm_size (me%model_comm, me%model_npes, istat);
153	CALL MPI_Comm_remote_size (me%inter_comm, me%inter_npes, istat);
154
155	! intra communicater is used for MPI_Get
156	CALL MPI_Intercomm_merge (me%inter_comm, .true., me%intra_comm, istat);
157	CALL MPI_Comm_rank (me%intra_comm, me%intra_rank, istat);
158	ALLOCATE (me%PEs(me%inter_npes))
159
160	!
161	!-- Allocate for all Server PEs an array of TYPE ArrayDef to store information of transfer array
162	do i=1,me%inter_npes
163	ALLOCATE(me%PEs(i)%array_list(PMC_MAX_ARRAY))
164	end do
165
166	! if(me%model_rank == 0) write(0,'(a,5i6)') 'PMC_ClientInit ',me%model_rank,me%model_npes,me%inter_npes,me%intra_rank
167
168	return
169	END SUBROUTINE PMC_ClientInit
170
171	SUBROUTINE PMC_Set_DataArray_Name (ServerArrayDesc, ServerArrayName, ClientArrayDesc, ClientArrayName, istat)
172	IMPLICIT none
173	character(len=*),INTENT(IN) :: ServerArrayName
174	character(len=*),INTENT(IN) :: ServerArrayDesc
175	character(len=*),INTENT(IN) :: ClientArrayName
176	character(len=*),INTENT(IN) :: ClientArrayDesc
177	INTEGER,INTENT(OUT) :: istat
178
179	!-- local variables
180	type(DA_NameDef) :: myName
181	INTEGER :: myPe
182	INTEGER :: my_AddiArray=0
183
184	istat = PMC_STATUS_OK
185	if(len(trim(ServerArrayName)) > DA_Namelen .or. &
186	len(trim(ClientArrayName)) > DA_Namelen) then !Name too long
187	istat = PMC_DA_NAME_ERR
188	end if
189
190	if(m_model_rank == 0) then
191	myIndex = myIndex+1
192	myName%couple_index = myIndex
193	myName%ServerDesc = trim(ServerArrayDesc)
194	myName%NameOnServer = trim(ServerArrayName)
195	myName%ClientDesc = trim(ClientArrayDesc)
196	myName%NameOnClient = trim(ClientArrayName)
197	end if
198
199	! Broadcat to all Client PEs
200
201	CALL PMC_Bcast ( myName%couple_index, 0, comm=m_model_comm)
202	CALL PMC_Bcast ( myName%ServerDesc, 0, comm=m_model_comm)
203	CALL PMC_Bcast ( myName%NameOnServer, 0, comm=m_model_comm)
204	CALL PMC_Bcast ( myName%ClientDesc, 0, comm=m_model_comm)
205	CALL PMC_Bcast ( myName%NameOnClient, 0, comm=m_model_comm)
206
207	! Broadcat to all Server PEs
208
209	if(m_model_rank == 0) then
210	myPE = MPI_ROOT
211	else
212	myPE = MPI_PROC_NULL
213	endif
214	CALL PMC_Bcast ( myName%couple_index, myPE, comm=m_to_server_comm)
215	CALL PMC_Bcast ( myName%ServerDesc, myPE, comm=m_to_server_comm)
216	CALL PMC_Bcast ( myName%NameOnServer, myPE, comm=m_to_server_comm)
217	CALL PMC_Bcast ( myName%ClientDesc, myPE, comm=m_to_server_comm)
218	CALL PMC_Bcast ( myName%NameOnClient, myPE, comm=m_to_server_comm)
219
220	CALL PMC_G_SetName (me, myName%couple_index, myName%NameOnClient)
221
222	return
223	END SUBROUTINE PMC_Set_DataArray_Name
224
225	SUBROUTINE PMC_Set_DataArray_Name_LastEntry (LastEntry)
226	IMPLICIT none
227	LOGICAL,INTENT(IN),optional :: LastEntry
228
229	!-- local variables
230	type(DA_NameDef) :: myName
231	INTEGER :: myPe
232
233	myName%couple_index = -1
234
235	if(m_model_rank == 0) then
236	myPE = MPI_ROOT
237	else
238	myPE = MPI_PROC_NULL
239	endif
240	CALL PMC_Bcast ( myName%couple_index, myPE, comm=m_to_server_comm)
241
242	return
243	END SUBROUTINE PMC_Set_DataArray_Name_LastEntry
244
245	SUBROUTINE PMC_C_Get_2D_index_list
246	IMPLICIT none
247
248	INTEGER :: i,j,i2,nr,ierr
249	INTEGER :: dummy
250	INTEGER :: indWin !: MPI window object
251	INTEGER :: indWin2 !: MPI window object
252	INTEGER(KIND=MPI_ADDRESS_KIND) :: win_size !: Size of MPI window 1 (in bytes)
253	INTEGER(KIND=MPI_ADDRESS_KIND) :: disp !: Displacement Unit (Integer = 4, floating poit = 8
254	INTEGER,DIMENSION(me%inter_npes*2) :: NrEle !: Number of Elements of a horizontal slice
255	TYPE(PeDef),POINTER :: aPE !: Pointer to PeDef structure
256	INTEGER(KIND=MPI_ADDRESS_KIND) :: WinSize !: Size of MPI window 2 (in bytes)
257	INTEGER,DIMENSION(:),POINTER :: myInd
258
259	! CALL PMC_C_CGet_Rem_index_list
260
261	win_size = c_sizeof(dummy)
262	CALL MPI_Win_create (dummy, win_size, iwp, MPI_INFO_NULL, me%intra_comm, indWin, ierr);
263	CALL MPI_Win_fence (0, indWin, ierr) ! Open Window on Server side
264	CALL MPI_Win_fence (0, indWin, ierr) ! Close Window on Server Side and opem on Client side
265
266	do i=1,me%inter_npes
267	disp = me%model_rank*2
268	CALL MPI_Get (NrEle((i-1)*2+1),2,MPI_INTEGER,i-1,disp,2,MPI_INTEGER,indWin, ierr)
269	end do
270	CALL MPI_Win_fence (0, indWin, ierr) ! MPI_get is Non-blocking -> data in NrEle is not available until MPI_fence CALL
271
272	WinSize = 0
273	do i=1,me%inter_npes !Allocate memory for index array
274	aPE => me%PEs(i)
275	i2 = (i-1)*2+1
276	nr = NrEle(i2+1)
277	if(nr > 0) then
278	ALLOCATE(aPE%locInd(nr))
279	else
280	NULLIFY (aPE%locInd)
281	endif
282	WinSize = max(nr,WinSize) !Maximum window size
283	end do
284
285	ALLOCATE(myInd(2*WinSize))
286	WinSize = 1
287
288	! local Buffer used in MPI_Get can but must not be inside the MPI Window
289	! Here, we use a dummy for MPI Window because the server PEs do not access the RMA window via MPI_get or MPI_Put
290
291	CALL MPI_Win_create (dummy, WinSize, iwp, MPI_INFO_NULL, me%intra_comm, indWin2, ierr);
292
293	CALL MPI_Win_fence (0, indWin2, ierr) ! MPI_get is Non-blocking -> data in NrEle is not available until MPI_fence CALL
294	CALL MPI_Win_fence (0, indWin2, ierr) ! MPI_get is Non-blocking -> data in NrEle is not available until MPI_fence CALL
295
296	do i=1,me%inter_npes
297	aPE => me%PEs(i)
298	nr = NrEle(i*2)
299	if(nr > 0 ) then
300	disp = NrEle(2*(i-1)+1)
301	CALL MPI_Win_lock (MPI_LOCK_SHARED , i-1, 0, indWin2, ierr)
302	CALL MPI_Get (myInd,2nr,MPI_INTEGER,i-1,disp,2nr,MPI_INTEGER,indWin2, ierr)
303	CALL MPI_Win_unlock (i-1, indWin2, ierr)
304	do j=1,nr
305	aPE%locInd(j)%i = myInd(2*j-1)
306	aPE%locInd(j)%j = myInd(2*j)
307	end do
308	aPE%NrEle = nr
309	else
310	aPE%NrEle = -1
311	end if
312	end do
313
314	CALL MPI_Barrier(me%intra_comm, ierr) ! Dont know why, but this barrier is necessary before we can free the windows
315
316	CALL MPI_Win_free(indWin, ierr);
317	CALL MPI_Win_free(indWin2, ierr);
318	DEALLOCATE (myInd)
319
320	return
321	END SUBROUTINE PMC_C_Get_2D_index_list
322
323	SUBROUTINE PMC_C_clear_next_array_list
324	IMPLICIT none
325
326	next_array_in_list = 0
327
328	return
329	END SUBROUTINE PMC_C_clear_next_array_list
330
331	! List handling is still required to get minimal interaction with pmc_interface
332	LOGICAL function PMC_C_GetNextArray (myName)
333	character(len=*),INTENT(OUT) :: myName
334
335	!-- local variables
336	TYPE(PeDef),POINTER :: aPE
337	TYPE(ArrayDef),POINTER :: ar
338
339	next_array_in_list = next_array_in_list+1
340
341	!-- Array Names are the same on all client PE, so take first PE to get the name
342	aPE => me%PEs(1)
343
344	if(next_array_in_list > aPE%Nr_arrays) then
345	PMC_C_GetNextArray = .false. !all arrays done
346	return
347	end if
348
349	ar => aPE%array_list(next_array_in_list)
350
351	myName = ar%name
352
353	PMC_C_GetNextArray = .true. ! Return true if legal array
354	return
355	END function PMC_C_GetNextArray
356
357	SUBROUTINE PMC_C_Set_DataArray_2d (array)
358
359	IMPLICIT none
360
361	REAL(wp), INTENT(IN) ,DIMENSION(:,:), POINTER :: array
362
363	INTEGER :: NrDims
364	INTEGER,DIMENSION (4) :: dims
365	TYPE(c_ptr) :: array_adr
366	INTEGER :: i
367	TYPE(PeDef),POINTER :: aPE
368	TYPE(ArrayDef),POINTER :: ar
369
370
371	dims = 1
372
373	NrDims = 2
374	dims(1) = size(array,1)
375	dims(2) = size(array,2)
376
377	array_adr = c_loc(array)
378
379	do i=1,me%inter_npes
380	aPE => me%PEs(i)
381	ar => aPE%array_list(next_array_in_list)
382	ar%NrDims = NrDims
383	ar%A_dim = dims
384	ar%data = array_adr
385	end do
386
387	return
388	END SUBROUTINE PMC_C_Set_DataArray_2d
389
390	SUBROUTINE PMC_C_Set_DataArray_3d (array)
391
392	IMPLICIT none
393
394	REAL(wp),INTENT(IN),DIMENSION(:,:,:), POINTER :: array
395
396	INTEGER :: NrDims
397	INTEGER,DIMENSION (4) :: dims
398	TYPE(c_ptr) :: array_adr
399	INTEGER :: i
400	TYPE(PeDef),POINTER :: aPE
401	TYPE(ArrayDef),POINTER :: ar
402
403	dims = 1
404
405	NrDims = 3
406	dims(1) = size(array,1)
407	dims(2) = size(array,2)
408	dims(3) = size(array,3)
409
410	array_adr = c_loc(array)
411
412	do i=1,me%inter_npes
413	aPE => me%PEs(i)
414	ar => aPE%array_list(next_array_in_list)
415	ar%NrDims = NrDims
416	ar%A_dim = dims
417	ar%data = array_adr
418	end do
419
420	return
421	END SUBROUTINE PMC_C_Set_DataArray_3d
422
423	SUBROUTINE PMC_C_setInd_and_AllocMem
424
425	IMPLICIT none
426
427	!-- naming convention: appending _sc -> server to client transfer
428	!-- _cs -> client to server transfer
429	!-- Recv -> server to client transfer
430	!-- Send -> client to server transfer
431
432	INTEGER :: i, istat, ierr, j
433	INTEGER,PARAMETER :: NoINdex=-1
434	INTEGER :: rcount
435	INTEGER :: arlen, myIndex, tag
436	INTEGER(idp) :: bufsize ! Size of MPI data Window
437	TYPE(PeDef),POINTER :: aPE
438	TYPE(ArrayDef),POINTER :: ar
439	INTEGER,DIMENSION(1024) :: req
440	character(len=DA_Namelen) :: myName
441	Type(c_ptr) :: base_ptr
442	REAL(kind=wp),DIMENSION(:),POINTER,save :: base_array_sc !Base array
443	REAL(kind=wp),DIMENSION(:),POINTER,save :: base_array_cs !Base array
444	INTEGER(KIND=MPI_ADDRESS_KIND) :: WinSize
445
446	myIndex = 0
447	bufsize = 8
448
449	!-- Server to client direction
450
451	!-- First stride, Compute size and set index
452
453	do i=1,me%inter_npes
454	aPE => me%PEs(i)
455	tag = 200
456
457	do j=1,aPE%Nr_arrays
458	ar => aPE%array_list(j)
459
460	! Receive Index from client
461	tag = tag+1
462	CALL MPI_Recv (myIndex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, MPI_STATUS_IGNORE, ierr)
463
464	if(ar%NrDims == 3) then
465	bufsize = max(bufsize,ar%A_dim(1)ar%A_dim(2)ar%A_dim(3)) ! determine max, because client buffer is allocated only once
466	else
467	bufsize = max(bufsize,ar%A_dim(1)*ar%A_dim(2))
468	end if
469	ar%RecvIndex = myIndex
470
471	end do
472	end do
473
474
475	!-- Create RMA (One Sided Communication) data buffer
476	!-- The buffer for MPI_Get can be PE local, i.e. it can but must not be part of the MPI RMA window
477
478	CALL PMC_Alloc_mem (base_array_sc, bufsize, base_ptr)
479	me%TotalBufferSize = bufsize*wp ! Total buffer size in Byte
480
481	!-- Second stride, Set Buffer pointer
482
483	do i=1,me%inter_npes
484	aPE => me%PEs(i)
485
486	do j=1,aPE%Nr_arrays
487	ar => aPE%array_list(j)
488	ar%RecvBuf = base_ptr
489	end do
490	end do
491
492	!-- Client to server direction
493
494	myIndex = 1
495	rCount = 0
496	bufsize = 8
497
498	do i=1,me%inter_npes
499	aPE => me%PEs(i)
500	tag = 300
501	do j=1,aPE%Nr_arrays
502	ar => aPE%array_list(j)
503	if(ar%NrDims == 2) then
504	arlen = aPE%NrEle ! 2D
505	else if(ar%NrDims == 3) then
506	arlen = aPE%NrEle*ar%A_dim(1) ! 3D
507	end if
508
509	tag = tag+1
510	rCount = rCount+1
511	if(aPE%NrEle > 0) then
512	CALL MPI_Isend (myIndex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, req(rCount),ierr)
513	ar%SendIndex = myIndex
514	else
515	CALL MPI_Isend (NoIndex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, req(rCount),ierr)
516	ar%SendIndex = NoIndex
517	end if
518
519	if(rCount == 1024) then ! Maximum of 1024 outstanding requests
520	CALL MPI_Waitall (rCount, req, MPI_STATUSES_IGNORE, ierr)
521	rCount = 0;
522	end if
523
524	if(aPE%NrEle > 0) then
525	ar%SendSize = arlen
526	myIndex = myIndex+arlen
527	bufsize = bufsize+arlen
528	end if
529	end do
530	if(rCount > 0) then ! Wait for all send completed
531	CALL MPI_Waitall (rCount, req, MPI_STATUSES_IGNORE, ierr)
532	end if
533	end do
534
535	!-- Create RMA (One Sided Communication) window for data buffer client to server transfer
536	!-- 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
537	!-- Only one RMA window is required to prepare the data for server -> client transfer on the server side and
538	!-- for client -> server transfer on the client side
539
540	CALL PMC_Alloc_mem (base_array_cs, bufsize)
541	me%TotalBufferSize = bufsize*wp !Total buffer size in Byte
542
543	WinSize = me%TotalBufferSize
544	CALL MPI_Win_create (base_array_cs, WinSize, wp, MPI_INFO_NULL, me%intra_comm, me%win_server_client, ierr);
545	CALL MPI_Win_fence (0, me%win_server_client, ierr); ! Open Window to set data
546	CALL MPI_Barrier(me%intra_comm, ierr)
547
548	!-- Second stride, Set Buffer pointer
549
550	do i=1,me%inter_npes
551	aPE => me%PEs(i)
552
553	do j=1,aPE%Nr_arrays
554	ar => aPE%array_list(j)
555	if(aPE%NrEle > 0) then
556	ar%SendBuf = c_loc(base_array_cs(ar%SendIndex))
557	if(ar%SendIndex+ar%SendSize > bufsize) then
558	write(0,'(a,i4,4i7,1x,a)') 'Client Buffer too small ',i, &
559	ar%SendIndex,ar%SendSize,ar%SendIndex+ar%SendSize,bufsize,trim(ar%name)
560	CALL MPI_Abort (MPI_COMM_WORLD, istat, ierr)
561	end if
562	end if
563	end do
564	end do
565
566	return
567	END SUBROUTINE PMC_C_setInd_and_AllocMem
568
569	SUBROUTINE PMC_C_GetBuffer (WaitTime)
570
571	IMPLICIT none
572
573	REAL(wp), INTENT(OUT), optional :: WaitTime
574
575	!-- local variables
576	INTEGER :: ip, ij, ierr, j
577	INTEGER :: nr ! Number of Elements to getb from server
578	INTEGER :: myIndex
579	REAL(wp) :: t1,t2
580	TYPE(PeDef),POINTER :: aPE
581	TYPE(ArrayDef),POINTER :: ar
582	INTEGER,DIMENSION(1) :: buf_shape
583	REAL(wp),POINTER,DIMENSION(:) :: buf
584	REAL(wp),POINTER,DIMENSION(:,:) :: data_2d
585	REAL(wp),POINTER,DIMENSION(:,:,:) :: data_3d
586	character(len=DA_Namelen) :: myName
587	INTEGER(kind=MPI_ADDRESS_KIND) :: target_disp
588
589	!
590	!-- Synchronization of the model is done in pmci_client_synchronize and pmci_server_synchronize
591	!-- Therefor the RMA window can be filled without sychronization at this point and a barrier
592	!-- is not necessary
593	!-- Please note that WaitTime has to be set in PMC_S_FillBuffer AND PMC_C_GetBuffer
594	if(present(WaitTime)) then
595	t1 = PMC_Time()
596	CALL MPI_Barrier(me%intra_comm, ierr)
597	t2 = PMC_Time()
598	WaitTime = t2-t1
599	end if
600
601	CALL MPI_Barrier(me%intra_comm, ierr) ! Wait for buffer is filled
602
603	do ip=1,me%inter_npes
604	aPE => me%PEs(ip)
605
606	do j=1,aPE%Nr_arrays
607	ar => aPE%array_list(j)
608	if(ar%NrDims == 2) then
609	nr = aPE%NrEle
610	else if(ar%NrDims == 3) then
611	nr = aPE%NrEle*ar%A_dim(1)
612	end if
613
614	buf_shape(1) = nr
615	CALL c_f_pointer(ar%RecvBuf, buf, buf_shape)
616	!
617	!-- MPI passive target RMA
618	if(nr > 0) then
619	target_disp = (ar%RecvIndex-1)
620	CALL MPI_Win_lock (MPI_LOCK_SHARED , ip-1, 0, me%win_server_client, ierr)
621	CALL MPI_Get (buf, nr, MPI_REAL, ip-1, target_disp, nr, MPI_REAL, me%win_server_client, ierr)
622	CALL MPI_Win_unlock (ip-1, me%win_server_client, ierr)
623	end if
624
625	myIndex = 1
626	if(ar%NrDims == 2) then
627
628	CALL c_f_pointer(ar%data, data_2d, ar%A_dim(1:2))
629	do ij=1,aPE%NrEle
630	data_2d(aPE%locInd(ij)%j,aPE%locInd(ij)%i) = buf(myIndex)
631	myIndex = myIndex+1
632	end do
633	else if(ar%NrDims == 3) then
634	CALL c_f_pointer(ar%data, data_3d, ar%A_dim(1:3))
635	do ij=1,aPE%NrEle
636	data_3d(:,aPE%locInd(ij)%j,aPE%locInd(ij)%i) = buf(myIndex:myIndex+ar%A_dim(1)-1)
637	myIndex = myIndex+ar%A_dim(1)
638	end do
639	end if
640
641	end do
642	end do
643	return
644	END SUBROUTINE PMC_C_GetBuffer
645
646	SUBROUTINE PMC_C_PutBuffer (WaitTime)
647
648	IMPLICIT none
649
650	REAL(wp), INTENT(OUT), optional :: WaitTime
651
652	!-- local variables
653	INTEGER :: ip, ij, ierr, j
654	INTEGER :: nr ! Number of Elements to getb from server
655	INTEGER :: myIndex
656	REAL(wp) :: t1,t2
657	TYPE(PeDef),POINTER :: aPE
658	TYPE(ArrayDef),POINTER :: ar
659	INTEGER,DIMENSION(1) :: buf_shape
660	REAL(wp),POINTER,DIMENSION(:) :: buf
661	REAL(wp),POINTER,DIMENSION(:,:) :: data_2d
662	REAL(wp),POINTER,DIMENSION(:,:,:) :: data_3d
663	character(len=DA_Namelen) :: myName
664	INTEGER(kind=MPI_ADDRESS_KIND) :: target_disp
665
666	t1 = PMC_Time()
667	CALL MPI_Barrier(me%intra_comm, ierr) ! Wait for empty buffer
668	t2 = PMC_Time()
669	if(present(WaitTime)) WaitTime = t2-t1
670
671	do ip=1,me%inter_npes
672	aPE => me%PEs(ip)
673
674	do j=1,aPE%Nr_arrays
675	ar => aPE%array_list(j)
676	myIndex=1
677	if(ar%NrDims == 2) then
678	buf_shape(1) = aPE%NrEle
679	CALL c_f_pointer(ar%SendBuf, buf, buf_shape)
680	CALL c_f_pointer(ar%data, data_2d, ar%A_dim(1:2))
681	do ij=1,aPE%NrEle
682	buf(myIndex) = data_2d(aPE%locInd(ij)%j,aPE%locInd(ij)%i)
683	myIndex = myIndex+1
684	end do
685	else if(ar%NrDims == 3) then
686	buf_shape(1) = aPE%NrEle*ar%A_dim(1)
687	CALL c_f_pointer(ar%SendBuf, buf, buf_shape)
688	CALL c_f_pointer(ar%data, data_3d, ar%A_dim(1:3))
689	do ij=1,aPE%NrEle
690	buf(myIndex:myIndex+ar%A_dim(1)-1) = data_3d(:,aPE%locInd(ij)%j,aPE%locInd(ij)%i)
691	myIndex = myIndex+ar%A_dim(1)
692	end do
693	end if
694	end do
695	end do
696
697
698	! CALL MPI_Win_fence (0, me%win_server_client, ierr) ! Fence might do it, test later
699	CALL MPI_Barrier(me%intra_comm, ierr) ! buffer is filled
700
701	return
702	END SUBROUTINE PMC_C_PutBuffer
703
704	#endif
705	END MODULE pmc_client

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