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source: palm/trunk/SOURCE/pmc_client.f90 @ 1801

Last change on this file since 1801 was 1798, checked in by raasch, 9 years ago
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[1762]	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	!
[1798]	23	!
[1762]	24	! Former revisions:
	25	! -----------------
	26	! $Id: pmc_client.f90 1798 2016-03-21 16:59:17Z raasch $
	27	!
[1798]	28	! 1797 2016-03-21 16:50:28Z raasch
	29	! introduction of different datatransfer modes
	30	!
[1792]	31	! 1791 2016-03-11 10:41:25Z raasch
	32	! Debug write-statement commented out
	33	!
[1787]	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	!
[1784]	38	! 1783 2016-03-06 18:36:17Z raasch
	39	! Bugfix: wrong data-type in MPI_WIN_CREATE replaced
	40	!
[1780]	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	!
[1765]	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	!
[1763]	49	! 1762 2016-02-25 12:31:13Z hellstea
	50	! Initial revision by K. Ketelsen
[1762]	51	!
	52	! Description:
	53	! ------------
	54	!
	55	! Client part of Palm Model Coupler
	56	!------------------------------------------------------------------------------!
	57
[1764]	58	#if defined( __parallel )
[1762]	59
	60	use, intrinsic :: iso_c_binding
	61
[1764]	62	#if defined( __lc )
	63	USE MPI
	64	#else
	65	INCLUDE "mpif.h"
	66	#endif
	67	USE kinds
[1762]	68	USE PMC_general, ONLY: ClientDef, DA_NameDef, DA_Namelen, PMC_STATUS_OK, PMC_DA_NAME_ERR, PeDef, ArrayDef, &
[1779]	69	DA_Desclen, DA_Namelen, PMC_G_SetName, PMC_MAX_ARRAY
[1762]	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
[1779]	79	INTEGER :: next_array_in_list = 0
	80	INTEGER :: myIndex = 0 !Counter and unique number for Data Arrays
[1762]	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
[1779]	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
[1762]	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
[1779]	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
[1762]	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
[1779]	152	!
	153	!-- Allocate for all Server PEs an array of TYPE ArrayDef to store information of transfer array
[1762]	154	do i=1,me%inter_npes
[1779]	155	ALLOCATE(me%PEs(i)%array_list(PMC_MAX_ARRAY))
[1762]	156	end do
	157
[1791]	158	! if(me%model_rank == 0) write(0,'(a,5i6)') 'PMC_ClientInit ',me%model_rank,me%model_npes,me%inter_npes,me%intra_rank
[1762]	159
	160	return
	161	END SUBROUTINE PMC_ClientInit
	162
[1779]	163	SUBROUTINE PMC_Set_DataArray_Name (ServerArrayDesc, ServerArrayName, ClientArrayDesc, ClientArrayName, istat)
[1762]	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
[1779]	247	TYPE(PeDef),POINTER :: aPE !: Pointer to PeDef structure
[1762]	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))
[1783]	278	WinSize = 1
[1762]	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
[1783]	283	CALL MPI_Win_create (dummy, WinSize, iwp, MPI_INFO_NULL, me%intra_comm, indWin2, ierr);
[1762]	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
[1779]	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
[1762]	324	LOGICAL function PMC_C_GetNextArray (myName)
	325	character(len=*),INTENT(OUT) :: myName
	326
	327	!-- local variables
[1779]	328	TYPE(PeDef),POINTER :: aPE
	329	TYPE(ArrayDef),POINTER :: ar
[1762]	330
[1779]	331	next_array_in_list = next_array_in_list+1
[1762]	332
[1779]	333	!-- Array Names are the same on all client PE, so take first PE to get the name
	334	aPE => me%PEs(1)
[1762]	335
[1779]	336	if(next_array_in_list > aPE%Nr_arrays) then
	337	PMC_C_GetNextArray = .false. !all arrays done
	338	return
	339	end if
[1762]	340
[1779]	341	ar => aPE%array_list(next_array_in_list)
[1762]	342
[1779]	343	myName = ar%name
	344
	345	PMC_C_GetNextArray = .true. ! Return true if legal array
	346	return
[1762]	347	END function PMC_C_GetNextArray
	348
	349	SUBROUTINE PMC_C_Set_DataArray_2d (array)
[1779]	350
[1762]	351	IMPLICIT none
	352
[1779]	353	REAL(wp), INTENT(IN) ,DIMENSION(:,:) :: array
[1762]	354
[1779]	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
[1762]	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)
[1786]	373	ar => aPE%array_list(next_array_in_list)
[1762]	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)
[1779]	383
[1762]	384	IMPLICIT none
	385
[1779]	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
[1762]	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)
[1797]	406	ar => aPE%array_list(next_array_in_list)
[1762]	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
[1764]	416
[1762]	417	IMPLICIT none
	418
[1786]	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
[1762]	427	INTEGER :: arlen, myIndex, tag
[1764]	428	INTEGER(idp) :: bufsize ! Size of MPI data Window
[1762]	429	TYPE(PeDef),POINTER :: aPE
	430	TYPE(ArrayDef),POINTER :: ar
[1786]	431	INTEGER,DIMENSION(1024) :: req
[1762]	432	character(len=DA_Namelen) :: myName
	433	Type(c_ptr) :: base_ptr
[1786]	434	REAL(kind=wp),DIMENSION(:),POINTER,save :: base_array_sc !Base array
	435	REAL(kind=wp),DIMENSION(:),POINTER,save :: base_array_cs !Base array
[1762]	436	INTEGER(KIND=MPI_ADDRESS_KIND) :: WinSize
	437
	438	myIndex = 0
	439	bufsize = 8
	440
[1786]	441	!-- Server to client direction
[1762]	442
[1786]	443	!-- First stride, Compute size and set index
	444
[1762]	445	do i=1,me%inter_npes
	446	aPE => me%PEs(i)
	447	tag = 200
	448
[1779]	449	do j=1,aPE%Nr_arrays
	450	ar => aPE%array_list(j)
[1762]	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
[1786]	456	if(ar%NrDims == 3) then
[1762]	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
[1786]	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
[1762]	521	end do
[1786]	522	if(rCount > 0) then ! Wait for all send completed
	523	CALL MPI_Waitall (rCount, req, MPI_STATUSES_IGNORE, ierr)
	524	end if
[1762]	525	end do
	526
[1786]	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
[1762]	531
[1786]	532	CALL PMC_Alloc_mem (base_array_cs, bufsize)
[1762]	533	me%TotalBufferSize = bufsize*wp !Total buffer size in Byte
	534
	535	WinSize = me%TotalBufferSize
[1786]	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
[1762]	538	CALL MPI_Barrier(me%intra_comm, ierr)
	539
[1786]	540	!-- Second stride, Set Buffer pointer
	541
[1762]	542	do i=1,me%inter_npes
	543	aPE => me%PEs(i)
	544
[1779]	545	do j=1,aPE%Nr_arrays
	546	ar => aPE%array_list(j)
[1786]	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
[1762]	554	end do
	555	end do
	556
	557	return
	558	END SUBROUTINE PMC_C_setInd_and_AllocMem
	559
	560	SUBROUTINE PMC_C_GetBuffer (WaitTime)
[1779]	561
[1762]	562	IMPLICIT none
	563
[1779]	564	REAL(wp), INTENT(OUT), optional :: WaitTime
	565
[1762]	566	!-- local variables
[1779]	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
[1762]	579
[1797]	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
[1762]	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
[1779]	597	do j=1,aPE%Nr_arrays
	598	ar => aPE%array_list(j)
	599	if(ar%NrDims == 2) then
[1762]	600	nr = aPE%NrEle
[1779]	601	else if(ar%NrDims == 3) then
[1762]	602	nr = aPE%NrEle*ar%A_dim(1)
	603	end if
	604
	605	buf_shape(1) = nr
[1786]	606	CALL c_f_pointer(ar%RecvBuf, buf, buf_shape)
[1779]	607	!
	608	!-- MPI passive target RMA
[1762]	609	if(nr > 0) then
[1786]	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)
[1762]	614	end if
	615
	616	myIndex = 1
[1779]	617	if(ar%NrDims == 2) then
[1762]	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
[1779]	624	else if(ar%NrDims == 3) then
[1762]	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)
[1779]	638
[1762]	639	IMPLICIT none
	640
[1779]	641	REAL(wp), INTENT(OUT), optional :: WaitTime
	642
[1762]	643	!-- local variables
[1779]	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
[1762]	656
[1786]	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
[1762]	661
	662	do ip=1,me%inter_npes
	663	aPE => me%PEs(ip)
	664
[1779]	665	do j=1,aPE%Nr_arrays
	666	ar => aPE%array_list(j)
[1786]	667	myIndex=1
[1779]	668	if(ar%NrDims == 2) then
[1786]	669	buf_shape(1) = aPE%NrEle
	670	CALL c_f_pointer(ar%SendBuf, buf, buf_shape)
[1762]	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
[1779]	676	else if(ar%NrDims == 3) then
[1786]	677	buf_shape(1) = aPE%NrEle*ar%A_dim(1)
	678	CALL c_f_pointer(ar%SendBuf, buf, buf_shape)
[1762]	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
[1786]	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
[1762]	691
	692	return
	693	END SUBROUTINE PMC_C_PutBuffer
	694
[1764]	695	#endif
[1762]	696	END MODULE pmc_client

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