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source: palm/trunk/SOURCE/pmc_server_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_server
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_server_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-statements 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	! 1779 2016-03-03 08:01:28Z raasch
47	! kind=dp replaced by wp,
48	! error messages removed or changed to PALM style, dim_order removed
49	! array management changed from linked list to sequential loop
50	!
51	! 1766 2016-02-29 08:37:15Z raasch
52	! modifications to allow for using PALM's pointer version
53	! +new routine pmc_s_set_active_data_array
54	!
55	! 1764 2016-02-28 12:45:19Z raasch
56	! cpp-statement added (nesting can only be used in parallel mode)
57	!
58	! 1762 2016-02-25 12:31:13Z hellstea
59	! Initial revision by K. Ketelsen
60	!
61	! Description:
62	! ------------
63	!
64	! Server part of Palm Model Coupler
65	!------------------------------------------------------------------------------!
66
67	#if defined( __parallel )
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, PMC_MAX_MODELL,PMC_sort, DA_NameDef, DA_Desclen, DA_Namelen, &
77	PMC_G_SetName, PeDef, ArrayDef, PMC_MAX_ARRAY
78	USE PMC_handle_communicator, ONLY: m_model_comm,m_model_rank,m_model_npes, m_to_client_comm, &
79	PMC_Server_for_Client, m_world_rank
80	USE PMC_MPI_wrapper, ONLY: PMC_Send_to_Client, PMC_Recv_from_Client, PMC_Bcast, PMC_Inter_Bcast, &
81	PMC_Alloc_mem, PMC_Time
82
83	IMPLICIT none
84	PRIVATE
85	SAVE
86
87	TYPE ClientIndexDef
88	INTEGER :: NrPoints
89	INTEGER,DIMENSION(:,:),allocatable :: index_list_2d
90	END TYPE ClientIndexDef
91
92	TYPE(ClientDef),DIMENSION(PMC_MAX_MODELL) :: Clients
93	TYPE(ClientIndexDef),DIMENSION(PMC_MAX_MODELL) :: indClients
94
95	INTEGER :: next_array_in_list = 0
96
97	PUBLIC PMC_Server_for_Client
98
99	INTERFACE PMC_ServerInit
100	MODULE procedure PMC_ServerInit
101	END INTERFACE PMC_ServerInit
102
103	INTERFACE PMC_S_Set_2D_index_list
104	MODULE procedure PMC_S_Set_2D_index_list
105	END INTERFACE PMC_S_Set_2D_index_list
106
107	INTERFACE PMC_S_clear_next_array_list
108	MODULE procedure PMC_S_clear_next_array_list
109	END INTERFACE PMC_S_clear_next_array_list
110
111	INTERFACE PMC_S_GetNextArray
112	MODULE procedure PMC_S_GetNextArray
113	END INTERFACE PMC_S_GetNextArray
114
115	INTERFACE PMC_S_Set_DataArray
116	MODULE procedure PMC_S_Set_DataArray_2d
117	MODULE procedure PMC_S_Set_DataArray_3d
118	END INTERFACE PMC_S_Set_DataArray
119
120	INTERFACE PMC_S_setInd_and_AllocMem
121	MODULE procedure PMC_S_setInd_and_AllocMem
122	END INTERFACE PMC_S_setInd_and_AllocMem
123
124	INTERFACE PMC_S_FillBuffer
125	MODULE procedure PMC_S_FillBuffer
126	END INTERFACE PMC_S_FillBuffer
127
128	INTERFACE PMC_S_GetData_from_Buffer
129	MODULE procedure PMC_S_GetData_from_Buffer
130	END INTERFACE PMC_S_GetData_from_Buffer
131
132	INTERFACE PMC_S_Set_Active_data_array
133	MODULE procedure PMC_S_Set_Active_data_array
134	END INTERFACE PMC_S_Set_Active_data_array
135
136	! PUBLIC section
137
138	PUBLIC PMC_ServerInit, PMC_S_Set_2D_index_list, PMC_S_GetNextArray, PMC_S_Set_DataArray
139	PUBLIC PMC_S_setInd_and_AllocMem, PMC_S_FillBuffer, PMC_S_GetData_from_Buffer, PMC_S_Set_Active_data_array
140	PUBLIC PMC_S_clear_next_array_list
141
142	CONTAINS
143
144	SUBROUTINE PMC_ServerInit
145	IMPLICIT none
146	INTEGER :: i
147	INTEGER :: j
148	INTEGER :: ClientId
149	INTEGER :: istat
150
151	do i=1,size(PMC_Server_for_Client)-1
152	! if(m_model_comm == 0) write(0,*) 'PMC_Server: Initialize client Id',PMC_Server_for_Client(i)
153
154	ClientId = PMC_Server_for_Client(i)
155
156	Clients(ClientId)%model_comm = m_model_comm
157	Clients(ClientId)%inter_comm = m_to_client_comm(ClientId)
158
159	! Get rank and size
160	CALL MPI_Comm_rank (Clients(ClientId)%model_comm, Clients(ClientId)%model_rank, istat);
161	CALL MPI_Comm_size (Clients(ClientId)%model_comm, Clients(ClientId)%model_npes, istat);
162	CALL MPI_Comm_remote_size (Clients(ClientId)%inter_comm, Clients(ClientId)%inter_npes, istat);
163
164	! Intra communicater is used for MPI_Get
165	CALL MPI_Intercomm_merge (Clients(ClientId)%inter_comm, .false., Clients(ClientId)%intra_comm, istat);
166	CALL MPI_Comm_rank (Clients(ClientId)%intra_comm, Clients(ClientId)%intra_rank, istat);
167
168	! write(9,*) 'ClientId ',i,ClientId,m_world_rank, Clients(ClientId)%inter_npes
169
170	ALLOCATE (Clients(ClientId)%PEs(Clients(ClientId)%inter_npes))
171	!
172	!-- Allocate for all client PEs an array of TYPE ArrayDef to store information of transfer array
173	do j=1,Clients(ClientId)%inter_npes
174	Allocate(Clients(ClientId)%PEs(j)%array_list(PMC_MAX_ARRAY))
175	end do
176
177	CALL Get_DA_names_from_client (ClientId)
178	end do
179
180	return
181	END SUBROUTINE PMC_ServerInit
182
183	SUBROUTINE PMC_S_Set_2D_index_list (ClientId, index_list)
184	IMPLICIT none
185	INTEGER,INTENT(IN) :: ClientId
186	INTEGER,DIMENSION(:,:),INTENT(INOUT) :: index_list !Index list will be modified in sort, therefore INOUT
187
188	!-- Local variables
189	INTEGER :: ip,is,ie,ian,ic,n
190	INTEGER :: istat
191
192	if(m_model_rank == 0) then
193	CALL PMC_sort (index_list, 6) ! Sort to ascending Server PE
194	is = 1
195
196	do ip=0,m_model_npes-1
197
198	! Split into Server PEs
199	ie = is-1 !there may be no entry for this PE
200	if(is <= size(index_list,2) .and. ie >= 0) then
201	do while ( index_list(6,ie+1) == ip)
202	ie = ie+1
203	if( ie == size(index_list,2)) EXIT
204	end do
205
206	ian = ie-is+1
207	else
208	is = -1
209	ie = -2
210	ian = 0
211	end if
212
213	! Send data to other server PEs
214
215	if(ip == 0) then
216	indClients(ClientId)%NrPoints = ian
217	if(ian > 0) then
218	ALLOCATE (indClients(ClientId)%index_list_2d(6,ian))
219	indClients(ClientId)%index_list_2d(:,1:ian) = index_list(:,is:ie)
220	end if
221	else
222	CALL MPI_Send (ian, 1, MPI_INTEGER, ip, 1000, m_model_comm, istat)
223	if(ian > 0) then
224	CALL MPI_Send (index_list(1,is), 6*ian, MPI_INTEGER, ip, 1001, &
225	m_model_comm, istat)
226	end if
227	end if
228	is = ie+1
229	end do
230	else
231	CALL MPI_Recv (indClients(ClientId)%NrPoints, 1, MPI_INTEGER, 0, 1000, m_model_comm, &
232	MPI_STATUS_IGNORE, istat)
233	ian = indClients(ClientId)%NrPoints
234	if(ian > 0) then
235	ALLOCATE(indClients(ClientId)%index_list_2d(6,ian))
236	CALL MPI_RECV (indClients(ClientId)%index_list_2d, 6*ian, MPI_INTEGER, 0, 1001, &
237	m_model_comm, MPI_STATUS_IGNORE, istat)
238	end if
239	end if
240
241	CALL Set_PE_index_list (ClientId,Clients(ClientId),indClients(ClientId)%index_list_2d,indClients(ClientId)%NrPoints)
242
243	return
244	END SUBROUTINE PMC_S_Set_2D_index_list
245
246	SUBROUTINE PMC_S_clear_next_array_list
247	IMPLICIT none
248
249	next_array_in_list = 0
250
251	return
252	END SUBROUTINE PMC_S_clear_next_array_list
253
254	! List handling is still required to get minimal interaction with pmc_interface
255	logical function PMC_S_GetNextArray (ClientId, myName)
256	INTEGER(iwp),INTENT(IN) :: ClientId
257	CHARACTER(len=*),INTENT(OUT) :: myName
258
259	!-- local variables
260	TYPE(PeDef),POINTER :: aPE
261	TYPE(ArrayDef),POINTER :: ar
262
263	next_array_in_list = next_array_in_list+1
264
265	!-- Array Names are the same on all client PE, so take first PE to get the name
266	aPE => Clients(ClientId)%PEs(1)
267
268	if(next_array_in_list > aPE%Nr_arrays) then
269	PMC_S_GetNextArray = .false. ! all arrays done
270	return
271	end if
272
273	ar => aPE%array_list(next_array_in_list)
274	myName = ar%name
275
276	PMC_S_GetNextArray = .true. ! Return true if legal array
277	return
278	END function PMC_S_GetNextArray
279
280	SUBROUTINE PMC_S_Set_DataArray_2d (ClientId, array, array_2 )
281
282	IMPLICIT none
283
284	INTEGER,INTENT(IN) :: ClientId
285
286	REAL(wp), INTENT(IN), DIMENSION(:,:), POINTER :: array
287	REAL(wp), INTENT(IN), DIMENSION(:,:), POINTER, OPTIONAL :: array_2
288
289	INTEGER :: NrDims
290	INTEGER,DIMENSION (4) :: dims
291	TYPE(c_ptr) :: array_adr
292	TYPE(c_ptr) :: second_adr
293
294	dims = 1
295
296	NrDims = 2
297	dims(1) = size(array,1)
298	dims(2) = size(array,2)
299	array_adr = c_loc(array)
300
301	IF ( PRESENT( array_2 ) ) THEN
302	second_adr = c_loc(array_2)
303	CALL PMC_S_SetArray (ClientId, NrDims, dims, array_adr, second_adr = second_adr)
304	ELSE
305	CALL PMC_S_SetArray (ClientId, NrDims, dims, array_adr)
306	ENDIF
307
308	return
309	END SUBROUTINE PMC_S_Set_DataArray_2d
310
311	SUBROUTINE PMC_S_Set_DataArray_3d (ClientId, array, nz_cl, nz, array_2 )
312
313	IMPLICIT none
314
315	INTEGER,INTENT(IN) :: ClientId
316
317	REAL(wp), INTENT(IN), DIMENSION(:,:,:), POINTER :: array
318	REAL(wp), INTENT(IN), DIMENSION(:,:,:), POINTER, OPTIONAL :: array_2
319	INTEGER,INTENT(IN) :: nz_cl
320	INTEGER,INTENT(IN) :: nz
321
322	INTEGER :: NrDims
323	INTEGER,DIMENSION (4) :: dims
324	TYPE(c_ptr) :: array_adr
325	TYPE(c_ptr) :: second_adr
326
327	dims = 1
328
329	dims = 0
330	NrDims = 3
331	dims(1) = size(array,1)
332	dims(2) = size(array,2)
333	dims(3) = size(array,3)
334	dims(4) = nz_cl+dims(1)-nz ! works for first dimension 1:nz and 0:nz+1
335
336	array_adr = c_loc(array)
337
338	!
339	!-- In PALM's pointer version, two indices have to be stored internally.
340	!-- The active address of the data array is set in swap_timelevel
341	IF ( PRESENT( array_2 ) ) THEN
342	second_adr = c_loc(array_2)
343	CALL PMC_S_SetArray (ClientId, NrDims, dims, array_adr, second_adr = second_adr)
344	ELSE
345	CALL PMC_S_SetArray (ClientId, NrDims, dims, array_adr)
346	ENDIF
347
348	return
349	END SUBROUTINE PMC_S_Set_DataArray_3d
350
351	SUBROUTINE PMC_S_setInd_and_AllocMem (ClientId)
352
353	USE control_parameters, &
354	ONLY: message_string
355
356	IMPLICIT none
357
358	!
359	!-- Naming convention for appendices: _sc -> server to client transfer
360	!-- _cs -> client to server transfer
361	!-- Send -> Server to client transfer
362	!-- Recv -> client to server transfer
363	INTEGER,INTENT(IN) :: ClientId
364
365	INTEGER :: i, istat, ierr, j
366	INTEGER :: arlen, myIndex, tag
367	INTEGER :: rCount ! count MPI requests
368	INTEGER(idp) :: bufsize ! Size of MPI data Window
369	TYPE(PeDef),POINTER :: aPE
370	TYPE(ArrayDef),POINTER :: ar
371	CHARACTER(len=DA_Namelen) :: myName
372	INTEGER,DIMENSION(1024) :: req
373	Type(c_ptr) :: base_ptr
374	REAL(wp),DIMENSION(:),POINTER,SAVE :: base_array_sc !Base array for server to client transfer
375	REAL(wp),DIMENSION(:),POINTER,SAVE :: base_array_cs !Base array for client to server transfer
376	INTEGER(KIND=MPI_ADDRESS_KIND) :: WinSize
377
378	!
379	!-- Server to client direction
380	myIndex = 1
381	rCount = 0
382	bufsize = 8
383
384	!
385	!-- First stride: Compute size and set index
386	do i=1,Clients(ClientId)%inter_npes
387	aPE => Clients(ClientId)%PEs(i)
388	tag = 200
389	do j=1,aPE%Nr_arrays
390	ar => aPE%array_list(j)
391	if(ar%NrDims == 2) then
392	arlen = aPE%NrEle ! 2D
393	else if(ar%NrDims == 3) then
394	arlen = aPE%NrEle * ar%A_dim(4); ! 3D
395	else
396	arlen = -1
397	end if
398	ar%SendIndex = myIndex
399
400	tag = tag+1
401	rCount = rCount+1
402	CALL MPI_Isend (myIndex, 1, MPI_INTEGER, i-1, tag, Clients(ClientId)%inter_comm, req(rCount),ierr)
403
404	if(rCount == 1024) then ! Maximum of 1024 outstanding requests
405	CALL MPI_Waitall (rCount, req, MPI_STATUSES_IGNORE, ierr)
406	rCount = 0;
407	end if
408
409	myIndex = myIndex+arlen
410	bufsize = bufsize+arlen
411	ar%SendSize = arlen
412
413	end do
414	if(rCount > 0) then ! Wait for all send completed
415	CALL MPI_Waitall (rCount, req, MPI_STATUSES_IGNORE, ierr)
416	end if
417	end do
418
419	!
420	!-- Create RMA (One Sided Communication) window for data buffer server to
421	!-- client transfer.
422	!-- The buffer of MPI_Get (counter part of transfer) can be PE-local, i.e.
423	!-- it can but must not be part of the MPI RMA window.
424	!-- Only one RMA window is required to prepare the data
425	!-- for server -> client transfer on the server side and
426	!-- for client -> server transfer on the client side
427	CALL PMC_Alloc_mem (base_array_sc, bufsize)
428	Clients(ClientId)%TotalBufferSize = bufsize*wp !Total buffer size in Byte
429
430	WinSize = bufsize*wp
431	CALL MPI_Win_create (base_array_sc, WinSize, wp, MPI_INFO_NULL, &
432	Clients(ClientId)%intra_comm, Clients(ClientId)%win_server_client, ierr)
433	CALL MPI_Win_fence (0, Clients(ClientId)%win_server_client, ierr); ! Open Window to set data
434	!
435	!-- Second stride: Set Buffer pointer
436	do i=1,Clients(ClientId)%inter_npes
437	aPE => Clients(ClientId)%PEs(i)
438	do j=1,aPE%Nr_arrays
439	ar => aPE%array_list(j)
440	ar%SendBuf = c_loc(base_array_sc(ar%SendIndex))
441	if(ar%SendIndex+ar%SendSize > bufsize) then
442	write(0,'(a,i4,4i7,1x,a)') 'Server Buffer too small ',i, &
443	ar%SendIndex,ar%SendSize,ar%SendIndex+ar%SendSize,bufsize,trim(ar%name)
444	CALL MPI_Abort (MPI_COMM_WORLD, istat, ierr)
445	end if
446	end do
447	end do
448
449	!-- Client to server direction
450
451	bufsize = 8
452
453	!-- First stride, Compute size and set index
454
455	do i=1,Clients(ClientId)%inter_npes
456	aPE => Clients(ClientId)%PEs(i)
457	tag = 300
458
459	do j=1,aPE%Nr_arrays
460	ar => aPE%array_list(j)
461
462	! Receive Index from client
463	tag = tag+1
464	CALL MPI_Recv (myIndex, 1, MPI_INTEGER, i-1, tag, Clients(ClientId)%inter_comm, MPI_STATUS_IGNORE, ierr)
465
466	if(ar%NrDims == 3) then
467	bufsize = max(bufsize,aPE%NrEle * ar%A_dim(4)) ! 3D
468	else
469	bufsize = max(bufsize,aPE%NrEle) ! 2D
470	end if
471	ar%RecvIndex = myIndex
472	end do
473
474	end do
475
476	!-- Create RMA (One Sided Communication) data buffer
477	!-- The buffer for MPI_Get can be PE local, i.e. it can but must not be part of the MPI RMA window
478
479	CALL PMC_Alloc_mem (base_array_cs, bufsize, base_ptr)
480	Clients(ClientId)%TotalBufferSize = bufsize*wp !Total buffer size in Byte
481
482	CALL MPI_Barrier(Clients(ClientId)%intra_comm, ierr)
483
484	!-- Second stride, Set Buffer pointer
485
486	do i=1,Clients(ClientId)%inter_npes
487	aPE => Clients(ClientId)%PEs(i)
488
489	do j=1,aPE%Nr_arrays
490	ar => aPE%array_list(j)
491	ar%RecvBuf = base_ptr
492	end do
493	end do
494
495	return
496	END SUBROUTINE PMC_S_setInd_and_AllocMem
497
498	SUBROUTINE PMC_S_FillBuffer (ClientId, WaitTime)
499	IMPLICIT none
500	INTEGER,INTENT(IN) :: ClientId
501	REAL(wp), INTENT(OUT), OPTIONAL :: WaitTime
502
503	INTEGER :: ip,ij,istat,ierr,j
504	INTEGER :: myIndex
505	REAL(wp) :: t1,t2
506	TYPE(PeDef),POINTER :: aPE
507	TYPE(ArrayDef),POINTER :: ar
508	CHARACTER(len=DA_Namelen) :: myName
509	INTEGER,DIMENSION(1) :: buf_shape
510	REAL(wp), POINTER, DIMENSION(:) :: buf
511	REAL(wp), POINTER, DIMENSION(:,:) :: data_2d
512	REAL(wp), POINTER, DIMENSION(:,:,:) :: data_3d
513
514	!-- Synchronization of the model is done in pmci_client_synchronize and pmci_server_synchronize
515	!-- Therefor the RMA window cann be filled without sychronization at this point and the barrier
516	!-- is not necessary
517	!-- Please note that WaitTime has to be set in PMC_S_FillBuffer AND PMC_C_GetBuffer
518
519	if(present(WaitTime)) then
520	t1 = PMC_Time()
521	CALL MPI_Barrier(Clients(ClientId)%intra_comm, ierr)
522	t2 = PMC_Time()
523	WaitTime = t2-t1
524	end if
525
526	do ip=1,Clients(ClientId)%inter_npes
527	aPE => Clients(ClientId)%PEs(ip)
528	do j=1,aPE%Nr_arrays
529	ar => aPE%array_list(j)
530	myIndex=1
531	if(ar%NrDims == 2) then
532	buf_shape(1) = aPE%NrEle
533	CALL c_f_pointer(ar%SendBuf, buf, buf_shape)
534	CALL c_f_pointer(ar%data, data_2d, ar%A_dim(1:2))
535	do ij=1,aPE%NrEle
536	buf(myIndex) = data_2d(aPE%locInd(ij)%j,aPE%locInd(ij)%i)
537	myIndex = myIndex+1
538	end do
539	else if(ar%NrDims == 3) then
540	buf_shape(1) = aPE%NrEle*ar%A_dim(4)
541	CALL c_f_pointer(ar%SendBuf, buf, buf_shape)
542	CALL c_f_pointer(ar%data, data_3d, ar%A_dim(1:3))
543	do ij=1,aPE%NrEle
544	buf(myIndex:myIndex+ar%A_dim(4)-1) = data_3d(1:ar%A_dim(4),aPE%locInd(ij)%j,aPE%locInd(ij)%i)
545	myIndex = myIndex+ar%A_dim(4)
546	end do
547	end if
548	end do
549	end do
550
551	CALL MPI_Barrier(Clients(ClientId)%intra_comm, ierr) ! buffer is filled
552
553	return
554	END SUBROUTINE PMC_S_FillBuffer
555
556	SUBROUTINE PMC_S_GetData_from_Buffer (ClientId, WaitTime)
557
558	IMPLICIT none
559
560	INTEGER,INTENT(IN) :: ClientId
561	REAL(wp), INTENT(OUT), OPTIONAL :: WaitTime
562
563	!-- local variables
564	INTEGER :: ip,ij,istat,ierr,j
565	INTEGER :: myIndex
566	INTEGER :: nr
567	REAL(wp) :: t1,t2
568	TYPE(PeDef),POINTER :: aPE
569	TYPE(ArrayDef),POINTER :: ar
570	CHARACTER(len=DA_Namelen) :: myName
571	INTEGER,DIMENSION(1) :: buf_shape
572	REAL(wp), POINTER, DIMENSION(:) :: buf
573	REAL(wp), POINTER, DIMENSION(:,:) :: data_2d
574	REAL(wp), POINTER, DIMENSION(:,:,:) :: data_3d
575	INTEGER :: target_pe
576	INTEGER(kind=MPI_ADDRESS_KIND) :: target_disp
577
578	t1 = PMC_Time()
579	CALL MPI_Barrier(Clients(ClientId)%intra_comm, ierr) ! Wait for client to fill buffer
580	t2 = PMC_Time()-t1
581	if(present(WaitTime)) WaitTime = t2
582
583	! CALL MPI_Win_fence (0, Clients(ClientId)%win_server_client, ierr) ! Fence might do it, test later
584	CALL MPI_Barrier(Clients(ClientId)%intra_comm, ierr) ! Wait for buffer is filled
585
586	do ip=1,Clients(ClientId)%inter_npes
587	aPE => Clients(ClientId)%PEs(ip)
588	do j=1,aPE%Nr_arrays
589	ar => aPE%array_list(j)
590
591	if(ar%RecvIndex < 0) CYCLE
592
593	if(ar%NrDims == 2) then
594	nr = aPE%NrEle
595	else if(ar%NrDims == 3) then
596	nr = aPE%NrEle*ar%A_dim(4)
597	end if
598
599	buf_shape(1) = nr
600	CALL c_f_pointer(ar%RecvBuf, buf, buf_shape)
601	!
602	!-- MPI passive target RMA
603
604	if(nr > 0) then
605	target_disp = ar%RecvIndex-1
606	target_pe = ip-1+m_model_npes ! client PEs are located behind server PEs
607	CALL MPI_Win_lock (MPI_LOCK_SHARED , target_pe, 0, Clients(ClientId)%win_server_client, ierr)
608	CALL MPI_Get (buf, nr, MPI_REAL, target_pe, target_disp, nr, MPI_REAL, Clients(ClientId)%win_server_client, ierr)
609	CALL MPI_Win_unlock (target_pe, Clients(ClientId)%win_server_client, ierr)
610	end if
611
612	myIndex=1
613	if(ar%NrDims == 2) then
614	CALL c_f_pointer(ar%data, data_2d, ar%A_dim(1:2))
615	do ij=1,aPE%NrEle
616	data_2d(aPE%locInd(ij)%j,aPE%locInd(ij)%i) = buf(myIndex)
617	myIndex = myIndex+1
618	end do
619	else if(ar%NrDims == 3) then
620	CALL c_f_pointer(ar%data, data_3d, ar%A_dim(1:3))
621	do ij=1,aPE%NrEle
622	data_3d(1:ar%A_dim(4),aPE%locInd(ij)%j,aPE%locInd(ij)%i) = buf(myIndex:myIndex+ar%A_dim(4)-1)
623	myIndex = myIndex+ar%A_dim(4)
624	end do
625	end if
626	end do
627	end do
628
629	END SUBROUTINE PMC_S_GetData_from_Buffer
630
631	! Private SUBROUTINEs
632
633	SUBROUTINE Get_DA_names_from_client (ClientId)
634	IMPLICIT none
635	INTEGER,INTENT(IN) :: ClientId
636	!-- local variables
637	type(DA_NameDef) :: myName
638
639	! Get Data Array Description and Name from Client
640
641	do
642	CALL PMC_Bcast ( myName%couple_index, 0, comm=m_to_client_comm(ClientId))
643	if(myName%couple_index == -1) EXIT
644	CALL PMC_Bcast ( myName%ServerDesc, 0, comm=m_to_client_comm(ClientId))
645	CALL PMC_Bcast ( myName%NameOnServer, 0, comm=m_to_client_comm(ClientId))
646	CALL PMC_Bcast ( myName%ClientDesc, 0, comm=m_to_client_comm(ClientId))
647	CALL PMC_Bcast ( myName%NameOnClient, 0, comm=m_to_client_comm(ClientId))
648
649	CALL PMC_G_SetName (clients(ClientID), myName%couple_index, myName%NameOnServer )
650	end do
651
652	return
653	END SUBROUTINE Get_DA_names_from_client
654
655	SUBROUTINE PMC_S_SetArray (ClientId, NrDims, dims, array_adr, second_adr)
656	IMPLICIT none
657
658	INTEGER,INTENT(IN) :: ClientId
659	INTEGER,INTENT(IN) :: NrDims
660	INTEGER,INTENT(IN),DIMENSION(:) :: dims
661	TYPE(c_ptr),INTENT(IN) :: array_adr
662	TYPE(c_ptr),INTENT(IN),OPTIONAL :: second_adr
663
664	INTEGER :: i
665	TYPE(PeDef),POINTER :: aPE
666	TYPE(ArrayDef),POINTER :: ar
667	CHARACTER(len=DA_Namelen) :: myName
668
669	! Set Array for Client interPE 0
670
671	do i=1,Clients(ClientId)%inter_npes
672	aPE => Clients(ClientId)%PEs(i)
673	ar => aPE%array_list(next_array_in_list)
674	ar%NrDims = NrDims
675	ar%A_dim = dims
676	ar%data = array_adr
677	if(present(second_adr)) then
678	ar%po_data(1) = array_adr
679	ar%po_data(2) = second_adr
680	else
681	ar%po_data(1) = C_NULL_PTR
682	ar%po_data(2) = C_NULL_PTR
683	end if
684	end do
685
686	return
687	END SUBROUTINE PMC_S_SetArray
688
689
690	SUBROUTINE PMC_S_Set_Active_data_array (ClientId,iactive)
691	IMPLICIT none
692
693	INTEGER,INTENT(IN) :: ClientId
694	INTEGER,INTENT(IN) :: iactive
695
696	!-- local variables
697	INTEGER :: i, ip, j
698	TYPE(PeDef),POINTER :: aPE
699	TYPE(ArrayDef),POINTER :: ar
700	CHARACTER(len=DA_Namelen) :: myName
701
702	do ip=1,Clients(ClientId)%inter_npes
703	aPE => Clients(ClientId)%PEs(ip)
704	do j=1,aPE%Nr_arrays
705	ar => aPE%array_list(j)
706	if(iactive == 1 .OR. iactive == 2) then
707	ar%data = ar%po_data(iactive)
708	end if
709	end do
710	end do
711
712	return
713	END SUBROUTINE PMC_S_Set_Active_data_array
714
715
716	SUBROUTINE Set_PE_index_list (ClientId, myClient,index_list,NrP)
717	IMPLICIT none
718
719	INTEGER,INTENT(IN) :: ClientId
720	TYPE(ClientDef),INTENT(INOUT) :: myClient
721	INTEGER,INTENT(IN),DIMENSION(:,:) :: index_list
722	INTEGER,INTENT(IN) :: NrP
723
724	!-- local variables
725	INTEGER :: i,j,ind,ierr,i2
726	TYPE(PeDef),POINTER :: aPE
727	INTEGER :: RemPE
728	INTEGER,DIMENSION(myClient%inter_npes) :: RemInd
729	INTEGER,DIMENSION(:),POINTER :: RemIndw
730	INTEGER,DIMENSION(:),POINTER :: RLdef
731	INTEGER(KIND=MPI_ADDRESS_KIND) :: WinSize
732	INTEGER :: indWin,indWin2
733
734	! First, count entries for every remote client PE
735
736	do i=1,myClient%inter_npes
737	aPE => myClient%PEs(i)
738	aPE%NrEle = 0
739	end do
740
741	do j=1,NrP ! loop over number of cells coarse grid
742	RemPE = index_list(5,j)+1 ! Pe number remote PE
743	aPE => myClient%PEs(RemPE)
744	aPE% NrEle = aPE% NrEle+1 ! Increment Number of elements for this client Pe
745	end do
746
747	do i=1,myClient%inter_npes
748	aPE => myClient%PEs(i)
749	ALLOCATE(aPE%locInd(aPE%NrEle))
750	end do
751
752	RemInd = 0
753
754	! Second, Create lists
755
756	do j=1,NrP ! loop over number of cells coarse grid
757	RemPE = index_list(5,j)+1 ! Pe number remote PE
758	aPE => myClient%PEs(RemPE)
759	RemInd(RemPE) = RemInd(RemPE)+1
760	ind = RemInd(RemPE)
761	aPE%locInd(ind)%i = index_list(1,j)
762	aPE%locInd(ind)%j = index_list(2,j)
763	end do
764
765	! Prepare Number of Elements for Client PEs
766	CALL PMC_Alloc_mem (RLdef, myClient%inter_npes*2)
767	WinSize = myClient%inter_npesc_sizeof(i)2 ! Number of Client PEs * size of INTEGER (i just arbitrary INTEGER)
768
769	CALL MPI_Win_create (RLdef, WinSize, iwp, MPI_INFO_NULL, myClient%intra_comm, indWin, ierr);
770	CALL MPI_Win_fence (0, indWin, ierr); ! Open Window to set data
771
772	RLdef(1) = 0 ! Index on Remote PE 0
773	RLdef(2) = RemInd(1) ! Number of Elements on Rem PE 0
774
775	do i=2,myClient%inter_npes ! Reserve Buffer for index array
776	i2 = (i-1)*2+1
777	RLdef(i2) = RLdef(i2-2) + RLdef(i2-1)*2 ! Index on Remote PE
778	RLdef(i2+1) = RemInd(i) ! Number of Elements on Remote PE
779	end do
780
781	CALL MPI_Win_fence (0, indWin, ierr); ! Close Window to allow client to access data
782	CALL MPI_Win_fence (0, indWin, ierr); ! Client has retrieved data
783
784	i2 = 2*myClient%inter_npes-1
785	WinSize = (RLdef(i2)+RLdef(i2+1))*2
786	WinSize = max(WinSize,1) ! Make sure, MPI_Alloc_mem works
787
788	CALL PMC_Alloc_mem (RemIndw, int(WinSize))
789
790	CALL MPI_Barrier (m_model_comm, ierr)
791	CALL MPI_Win_create (RemIndw, WinSize*c_sizeof(i), iwp, MPI_INFO_NULL, myClient%intra_comm, indWin2, ierr);
792
793	CALL MPI_Win_fence (0, indWin2, ierr); ! Open Window to set data
794	do j=1,NrP ! this loop creates the 2D index list
795	RemPE = index_list(5,j)+1 ! Pe number remote PE
796	aPE => myClient%PEs(RemPE)
797	i2 = RemPE*2-1
798	ind = RLdef(i2)+1
799	RemIndw(ind) = index_list(3,j)
800	RemIndw(ind+1) = index_list(4,j)
801	RLdef(i2) = RLdef(i2)+2
802	end do
803	CALL MPI_Win_fence (0, indWin2, ierr); !all data set
804
805	CALL MPI_Barrier(myClient%intra_comm, ierr) ! Dont know why, but this barrier is necessary before we can free the windows
806
807	CALL MPI_Win_free(indWin, ierr)
808	CALL MPI_Win_free(indWin2, ierr)
809
810	! Sollte funktionieren, Problem mit MPI implementation
811	! https://www.lrz.de/services/software/parallel/mpi/onesided
812	! CALL MPI_Free_mem (RemIndw, ierr)
813
814	return
815	END SUBROUTINE Set_PE_index_list
816
817	#endif
818	END MODULE pmc_server

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