1 |
jmc |
1.10 |
C $Header: /u/gcmpack/MITgcm/pkg/flt/exch_recv_get_vec.F,v 1.9 2011/12/22 19:04:45 jmc Exp $ |
2 |
jmc |
1.2 |
C $Name: $ |
3 |
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|
4 |
jmc |
1.5 |
#include "CPP_EEOPTIONS.h" |
5 |
jmc |
1.8 |
#undef EXCH_USE_SPINNING |
6 |
jmc |
1.5 |
#undef DBUG_EXCH_VEC |
7 |
jmc |
1.3 |
|
8 |
|
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C-- Contents |
9 |
jmc |
1.10 |
C-- o EXCH_RECV_GET_VEC_X_RL |
10 |
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C-- o EXCH_RECV_GET_VEC_Y_RL |
11 |
jmc |
1.3 |
|
12 |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
13 |
jmc |
1.5 |
CBOP 0 |
14 |
jmc |
1.10 |
C !ROUTINE: EXCH_RECV_GET_VEC_X_RL |
15 |
adcroft |
1.1 |
|
16 |
jmc |
1.5 |
C !INTERFACE: |
17 |
jmc |
1.10 |
SUBROUTINE EXCH_RECV_GET_VEC_X_RL( |
18 |
jmc |
1.4 |
U arrayE, arrayW, |
19 |
|
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I myd1, myThid ) |
20 |
jmc |
1.5 |
C !DESCRIPTION: |
21 |
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C *==========================================================* |
22 |
jmc |
1.10 |
C | SUBROUTINE EXCH_RECV_GET_VEC_X_RL |
23 |
jmc |
1.5 |
C | o "Receive" or "Get" X edges for RL array. |
24 |
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C *==========================================================* |
25 |
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C | Routine that invokes actual message passing receive |
26 |
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C | of data to update buffer in X direction |
27 |
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C *==========================================================* |
28 |
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29 |
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C !USES: |
30 |
adcroft |
1.1 |
IMPLICIT NONE |
31 |
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32 |
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C == Global variables == |
33 |
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#include "SIZE.h" |
34 |
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#include "EEPARAMS.h" |
35 |
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#include "EESUPPORT.h" |
36 |
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#include "EXCH.h" |
37 |
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|
38 |
jmc |
1.5 |
C !INPUT/OUTPUT PARAMETERS: |
39 |
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C arrayE :: buffer array to collect Eastern Neighbour values |
40 |
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C arrayW :: buffer array to collect Western Neighbour values |
41 |
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C myd1 :: size |
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C myThid :: my Thread Id. number |
43 |
adcroft |
1.1 |
INTEGER myd1 |
44 |
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_RL arrayE(myd1, nSx, nSy), arrayW(myd1, nSx, nSy) |
45 |
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INTEGER myThid |
46 |
jmc |
1.5 |
CEOP |
47 |
adcroft |
1.1 |
|
48 |
jmc |
1.5 |
C !LOCAL VARIABLES: |
49 |
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C bi, bj :: tile indices |
50 |
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C biW, bjW :: West tile indices |
51 |
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C biE, bjE :: East tile indices |
52 |
cnh |
1.6 |
C theProc :: Variables used in message building |
53 |
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C theTag :: Variables used in message building |
54 |
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C theType :: Variables used in message building |
55 |
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C theSize :: Variables used in message building |
56 |
jmc |
1.5 |
C westCommMode :: variables holding type of communication |
57 |
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C eastCommMode :: a particular tile face uses. |
58 |
jmc |
1.4 |
INTEGER bi, bj |
59 |
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c INTEGER biW, bjW, biE, bjE |
60 |
adcroft |
1.1 |
INTEGER westCommMode |
61 |
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INTEGER eastCommMode |
62 |
jmc |
1.9 |
INTEGER ioUnit |
63 |
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#ifdef EXCH_USE_SPINNING |
64 |
adcroft |
1.1 |
INTEGER spinCount |
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jmc |
1.9 |
#endif |
66 |
adcroft |
1.1 |
#ifdef ALLOW_USE_MPI |
67 |
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INTEGER theProc, theTag, theType, theSize |
68 |
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INTEGER mpiStatus(MPI_STATUS_SIZE,4), mpiRc |
69 |
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#endif |
70 |
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|
71 |
jmc |
1.2 |
C-- Under a "put" scenario we |
72 |
adcroft |
1.1 |
C-- i. set completetion signal for buffer we put into. |
73 |
jmc |
1.2 |
C-- ii. wait for completetion signal indicating data has been put in |
74 |
adcroft |
1.1 |
C-- our buffer. |
75 |
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C-- Under a messaging mode we "receive" the message. |
76 |
jmc |
1.5 |
C-- Under a "get" scenario <= not implemented, we |
77 |
adcroft |
1.1 |
C-- i. Check that the data is ready. |
78 |
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C-- ii. Read the data. |
79 |
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C-- iii. Set data read flag + memory sync. |
80 |
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jmc |
1.5 |
ioUnit = errorMessageUnit |
82 |
adcroft |
1.1 |
|
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jmc |
1.8 |
_BEGIN_MASTER(myThid) |
84 |
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DO bj=1,nSy |
86 |
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DO bi=1,nSx |
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adcroft |
1.1 |
westCommMode = _tileCommModeW(bi,bj) |
88 |
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eastCommMode = _tileCommModeE(bi,bj) |
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jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
90 |
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write(ioUnit,'(A,5I6)') 'RECV_X,0 :',myProcId,bi,bj |
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#endif |
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jmc |
1.4 |
c biE = _tileBiE(bi,bj) |
93 |
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c bjE = _tileBjE(bi,bj) |
94 |
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c biW = _tileBiW(bi,bj) |
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c bjW = _tileBjW(bi,bj) |
96 |
adcroft |
1.1 |
IF ( westCommMode .EQ. COMM_MSG ) THEN |
97 |
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#ifdef ALLOW_USE_MPI |
98 |
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IF ( usingMPI ) THEN |
99 |
jmc |
1.10 |
theProc = tilePidW(bi,bj) |
100 |
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theTag = _tileTagRecvW(bi,bj) |
101 |
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theType = _MPI_TYPE_RL |
102 |
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theSize = myd1 |
103 |
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#ifdef DBUG_EXCH_VEC |
104 |
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write(ioUnit,'(A,5I5,I8)') 'qq2xW: ',myProcId,bi,bj, |
105 |
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& theProc,theTag,theSize |
106 |
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#endif |
107 |
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CALL MPI_Recv( arrayW(1,bi,bj), theSize, theType, |
108 |
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& theProc, theTag, MPI_COMM_MODEL, |
109 |
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& mpiStatus, mpiRc ) |
110 |
adcroft |
1.1 |
c if (theProc .eq. 0 .or. theProc .eq. 2) then |
111 |
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c if (arrayW(1,bi,bj) .ne. 0.) then |
112 |
jmc |
1.5 |
c write(errormessageunit,*) 'qq2y: ',myProcId, |
113 |
adcroft |
1.1 |
c & theProc,theTag,theSize,(arrayW(i,bi,bj),i=1,32) |
114 |
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c else |
115 |
jmc |
1.5 |
c write(errormessageunit,*) 'qq2n: ',myProcId, |
116 |
adcroft |
1.1 |
c & theProc,theTag,theSize,(arrayW(i,bi,bj),i=1,32) |
117 |
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c endif |
118 |
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c endif |
119 |
jmc |
1.5 |
ENDIF |
120 |
adcroft |
1.1 |
#endif /* ALLOW_USE_MPI */ |
121 |
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ENDIF |
122 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
123 |
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write(ioUnit,'(A,5I6)') 'RECV_X,1 :',myProcId,bi,bj |
124 |
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#endif |
125 |
jmc |
1.10 |
|
126 |
adcroft |
1.1 |
IF ( eastCommMode .EQ. COMM_MSG ) THEN |
127 |
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#ifdef ALLOW_USE_MPI |
128 |
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IF ( usingMPI ) THEN |
129 |
jmc |
1.10 |
theProc = tilePidE(bi,bj) |
130 |
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theTag = _tileTagRecvE(bi,bj) |
131 |
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theType = _MPI_TYPE_RL |
132 |
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theSize = myd1 |
133 |
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#ifdef DBUG_EXCH_VEC |
134 |
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write(ioUnit,'(A,5I5,I8)') 'qq2xE: ',myProcId,bi,bj, |
135 |
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& theProc,theTag,theSize |
136 |
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#endif |
137 |
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CALL MPI_Recv( arrayE(1,bi,bj), theSize, theType, |
138 |
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& theProc, theTag, MPI_COMM_MODEL, |
139 |
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& mpiStatus, mpiRc ) |
140 |
jmc |
1.5 |
ENDIF |
141 |
adcroft |
1.1 |
#endif /* ALLOW_USE_MPI */ |
142 |
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ENDIF |
143 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
144 |
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write(ioUnit,'(A,5I6)') 'RECV_X,2 :',myProcId,bi,bj |
145 |
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#endif |
146 |
adcroft |
1.1 |
ENDDO |
147 |
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ENDDO |
148 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
149 |
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write(ioUnit,'(A,5I6,I12)') 'RECV_X:',myProcId |
150 |
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#endif |
151 |
adcroft |
1.1 |
|
152 |
jmc |
1.8 |
IF ( .NOT.exchUsesBarrier ) THEN |
153 |
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DO bj=1,nSy |
154 |
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DO bi=1,nSx |
155 |
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IF ( exchNReqsX(1,bi,bj) .GT. 0 ) THEN |
156 |
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#ifdef ALLOW_USE_MPI |
157 |
jmc |
1.10 |
IF ( usingMPI ) |
158 |
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& CALL MPI_Waitall( exchNReqsX(1,bi,bj), exchReqIdX(1,1,bi,bj), |
159 |
jmc |
1.8 |
& mpiStatus, mpiRC ) |
160 |
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#endif /* ALLOW_USE_MPI */ |
161 |
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ENDIF |
162 |
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C Clear outstanding requests counter |
163 |
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exchNReqsX(1,bi,bj) = 0 |
164 |
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ENDDO |
165 |
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ENDDO |
166 |
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ENDIF |
167 |
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168 |
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_END_MASTER(myThid) |
169 |
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170 |
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C-- need to sync threads after master has received data ; |
171 |
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C (done after mpi waitall in case waitall is really needed) |
172 |
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_BARRIER |
173 |
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174 |
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C-- Threads wait for buffers I am going to read to be ready. |
175 |
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C note: added BARRIER in exch_send_put S/R and here above (message |
176 |
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C mode) so that we no longer needs this (undef EXCH_USE_SPINNING) |
177 |
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#ifdef EXCH_USE_SPINNING |
178 |
adcroft |
1.1 |
IF ( exchUsesBarrier ) THEN |
179 |
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C o On some machines ( T90 ) use system barrier rather than spinning. |
180 |
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CALL BARRIER( myThid ) |
181 |
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ELSE |
182 |
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C o Spin waiting for completetion flag. This avoids a global-lock |
183 |
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C i.e. we only lock waiting for data that we need. |
184 |
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DO bj=myByLo(myThid),myByHi(myThid) |
185 |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
186 |
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spinCount = 0 |
187 |
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westCommMode = _tileCommModeW(bi,bj) |
188 |
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eastCommMode = _tileCommModeE(bi,bj) |
189 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
190 |
|
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write(ioUnit,'(A,5I6,I12)') 'spin:', myProcId,bi,bj, |
191 |
|
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& westRecvAck(1,bi,bj), eastRecvAck(1,bi,bj), spinCount |
192 |
|
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#endif |
193 |
adcroft |
1.1 |
10 CONTINUE |
194 |
jmc |
1.7 |
CALL FOOL_THE_COMPILER( spinCount ) |
195 |
adcroft |
1.1 |
spinCount = spinCount+1 |
196 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
197 |
|
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write(ioUnit,'(A,5I6,I12)') 'spin:', myProcId,bi,bj, |
198 |
|
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& westRecvAck(1,bi,bj), eastRecvAck(1,bi,bj), spinCount |
199 |
|
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IF ( myThid.EQ.1 .AND. spinCount.GT. _EXCH_SPIN_LIMIT ) THEN |
200 |
|
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STOP ' S/R EXCH_RECV_GET_X: spinCount > _EXCH_SPIN_LIMIT' |
201 |
|
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ENDIF |
202 |
|
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#endif |
203 |
|
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IF ( westRecvAck(1,bi,bj) .EQ. 0 ) GOTO 10 |
204 |
|
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IF ( eastRecvAck(1,bi,bj) .EQ. 0 ) GOTO 10 |
205 |
adcroft |
1.1 |
C Clear outstanding requests |
206 |
jmc |
1.5 |
westRecvAck(1,bi,bj) = 0 |
207 |
|
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eastRecvAck(1,bi,bj) = 0 |
208 |
adcroft |
1.1 |
ENDDO |
209 |
|
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ENDDO |
210 |
|
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ENDIF |
211 |
jmc |
1.8 |
#endif /* EXCH_USE_SPINNING */ |
212 |
adcroft |
1.1 |
|
213 |
|
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RETURN |
214 |
|
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END |
215 |
|
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|
216 |
jmc |
1.3 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
217 |
jmc |
1.5 |
CBOP 0 |
218 |
jmc |
1.10 |
C !ROUTINE: EXCH_RECV_GET_VEC_Y_RL |
219 |
adcroft |
1.1 |
|
220 |
jmc |
1.5 |
C !INTERFACE: |
221 |
jmc |
1.10 |
SUBROUTINE EXCH_RECV_GET_VEC_Y_RL( |
222 |
jmc |
1.4 |
U arrayN, arrayS, |
223 |
|
|
I myd1, myThid ) |
224 |
jmc |
1.5 |
C !DESCRIPTION: |
225 |
|
|
C *==========================================================* |
226 |
jmc |
1.10 |
C | SUBROUTINE EXCH_RECV_GET_VEC_Y_RL |
227 |
jmc |
1.5 |
C | o "Receive" or "Get" Y edges for RL array. |
228 |
|
|
C *==========================================================* |
229 |
|
|
C | Routine that invokes actual message passing receive |
230 |
|
|
C | of data to update buffer in Y direction |
231 |
|
|
C *==========================================================* |
232 |
|
|
|
233 |
|
|
C !USES: |
234 |
adcroft |
1.1 |
IMPLICIT NONE |
235 |
|
|
|
236 |
|
|
C == Global variables == |
237 |
|
|
#include "SIZE.h" |
238 |
|
|
#include "EEPARAMS.h" |
239 |
|
|
#include "EESUPPORT.h" |
240 |
|
|
#include "EXCH.h" |
241 |
|
|
|
242 |
jmc |
1.5 |
C !INPUT/OUTPUT PARAMETERS: |
243 |
|
|
C arrayN :: buffer array to collect Northern Neighbour values |
244 |
|
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C arrayS :: buffer array to collect Southern Neighbour values |
245 |
|
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C myd1 :: size |
246 |
|
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C myThid :: my Thread Id. number |
247 |
adcroft |
1.1 |
INTEGER myd1 |
248 |
|
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_RL arrayN(myd1, nSx, nSy), arrayS(myd1, nSx, nSy) |
249 |
|
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INTEGER myThid |
250 |
jmc |
1.5 |
CEOP |
251 |
adcroft |
1.1 |
|
252 |
jmc |
1.5 |
C !LOCAL VARIABLES: |
253 |
|
|
C bi, bj :: tile indices |
254 |
|
|
C biS, bjS :: South tile indices |
255 |
|
|
C biN, bjN :: North tile indices |
256 |
cnh |
1.6 |
C theProc :: Variables used in message building |
257 |
|
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C theTag :: Variables used in message building |
258 |
|
|
C theType :: Variables used in message building |
259 |
|
|
C theSize :: Variables used in message building |
260 |
jmc |
1.5 |
C southCommMode :: variables holding type of communication |
261 |
|
|
C northCommMode :: a particular tile face uses. |
262 |
jmc |
1.4 |
INTEGER bi, bj |
263 |
|
|
c INTEGER biS, bjS, biN, bjN |
264 |
adcroft |
1.1 |
INTEGER southCommMode |
265 |
|
|
INTEGER northCommMode |
266 |
jmc |
1.9 |
INTEGER ioUnit |
267 |
|
|
#ifdef EXCH_USE_SPINNING |
268 |
adcroft |
1.1 |
INTEGER spinCount |
269 |
jmc |
1.9 |
#endif |
270 |
adcroft |
1.1 |
#ifdef ALLOW_USE_MPI |
271 |
|
|
INTEGER theProc, theTag, theType, theSize |
272 |
|
|
INTEGER mpiStatus(MPI_STATUS_SIZE,4), mpiRc |
273 |
|
|
#endif |
274 |
|
|
|
275 |
jmc |
1.2 |
C-- Under a "put" scenario we |
276 |
adcroft |
1.1 |
C-- i. set completetion signal for buffer we put into. |
277 |
jmc |
1.2 |
C-- ii. wait for completetion signal indicating data has been put in |
278 |
adcroft |
1.1 |
C-- our buffer. |
279 |
|
|
C-- Under a messaging mode we "receive" the message. |
280 |
jmc |
1.5 |
C-- Under a "get" scenario <= not implemented, we |
281 |
adcroft |
1.1 |
C-- i. Check that the data is ready. |
282 |
|
|
C-- ii. Read the data. |
283 |
|
|
C-- iii. Set data read flag + memory sync. |
284 |
|
|
|
285 |
jmc |
1.5 |
ioUnit = errorMessageUnit |
286 |
adcroft |
1.1 |
|
287 |
jmc |
1.8 |
_BEGIN_MASTER(myThid) |
288 |
|
|
|
289 |
|
|
DO bj=1,nSy |
290 |
|
|
DO bi=1,nSx |
291 |
adcroft |
1.1 |
southCommMode = _tileCommModeS(bi,bj) |
292 |
|
|
northCommMode = _tileCommModeN(bi,bj) |
293 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
294 |
|
|
write(ioUnit,'(A,5I6)') 'RECV_Y,0 :',myProcId,bi,bj |
295 |
|
|
#endif |
296 |
jmc |
1.4 |
c biN = _tileBiN(bi,bj) |
297 |
|
|
c bjN = _tileBjN(bi,bj) |
298 |
|
|
c biS = _tileBiS(bi,bj) |
299 |
|
|
c bjS = _tileBjS(bi,bj) |
300 |
adcroft |
1.1 |
IF ( southCommMode .EQ. COMM_MSG ) THEN |
301 |
|
|
#ifdef ALLOW_USE_MPI |
302 |
|
|
IF ( usingMPI ) THEN |
303 |
jmc |
1.10 |
theProc = tilePidS(bi,bj) |
304 |
|
|
theTag = _tileTagRecvS(bi,bj) |
305 |
|
|
theType = _MPI_TYPE_RL |
306 |
|
|
theSize = myd1 |
307 |
|
|
CALL MPI_Recv( arrayS(1,bi,bj), theSize, theType, |
308 |
|
|
& theProc, theTag, MPI_COMM_MODEL, |
309 |
|
|
& mpiStatus, mpiRc ) |
310 |
jmc |
1.5 |
ENDIF |
311 |
adcroft |
1.1 |
#endif /* ALLOW_USE_MPI */ |
312 |
|
|
ENDIF |
313 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
314 |
|
|
write(ioUnit,'(A,5I6)') 'RECV_Y,1 :',myProcId,bi,bj |
315 |
|
|
#endif |
316 |
jmc |
1.10 |
|
317 |
adcroft |
1.1 |
IF ( northCommMode .EQ. COMM_MSG ) THEN |
318 |
|
|
#ifdef ALLOW_USE_MPI |
319 |
|
|
IF ( usingMPI ) THEN |
320 |
jmc |
1.10 |
theProc = tilePidN(bi,bj) |
321 |
|
|
theTag = _tileTagRecvN(bi,bj) |
322 |
|
|
theType = _MPI_TYPE_RL |
323 |
|
|
theSize = myd1 |
324 |
|
|
CALL MPI_Recv( arrayN(1,bi,bj), theSize, theType, |
325 |
|
|
& theProc, theTag, MPI_COMM_MODEL, |
326 |
|
|
& mpiStatus, mpiRc ) |
327 |
jmc |
1.5 |
ENDIF |
328 |
adcroft |
1.1 |
#endif /* ALLOW_USE_MPI */ |
329 |
|
|
ENDIF |
330 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
331 |
|
|
write(ioUnit,'(A,5I6)') 'RECV_Y,2 :',myProcId,bi,bj |
332 |
|
|
#endif |
333 |
adcroft |
1.1 |
ENDDO |
334 |
|
|
ENDDO |
335 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
336 |
|
|
write(ioUnit,'(A,5I6,I12)') 'RECV_Y:',myProcId |
337 |
|
|
#endif |
338 |
adcroft |
1.1 |
|
339 |
jmc |
1.8 |
C-- Processes wait for buffers I am going to read to be ready. |
340 |
|
|
IF ( .NOT.exchUsesBarrier ) THEN |
341 |
|
|
DO bj=1,nSy |
342 |
|
|
DO bi=1,nSx |
343 |
|
|
IF ( exchNReqsY(1,bi,bj) .GT. 0 ) THEN |
344 |
|
|
#ifdef ALLOW_USE_MPI |
345 |
jmc |
1.10 |
IF ( usingMPI ) |
346 |
|
|
& CALL MPI_Waitall( exchNReqsY(1,bi,bj), exchReqIdY(1,1,bi,bj), |
347 |
jmc |
1.8 |
& mpiStatus, mpiRC ) |
348 |
|
|
#endif /* ALLOW_USE_MPI */ |
349 |
|
|
ENDIF |
350 |
|
|
C Clear outstanding requests counter |
351 |
|
|
exchNReqsY(1,bi,bj) = 0 |
352 |
|
|
ENDDO |
353 |
|
|
ENDDO |
354 |
|
|
ENDIF |
355 |
|
|
|
356 |
|
|
_END_MASTER(myThid) |
357 |
|
|
|
358 |
|
|
C-- need to sync threads after master has received data ; |
359 |
|
|
C (done after mpi waitall in case waitall is really needed) |
360 |
|
|
_BARRIER |
361 |
|
|
|
362 |
|
|
C-- Threads wait for buffers I am going to read to be ready. |
363 |
|
|
C note: added BARRIER in exch_send_put S/R and here above (message |
364 |
|
|
C mode) so that we no longer needs this (undef EXCH_USE_SPINNING) |
365 |
|
|
#ifdef EXCH_USE_SPINNING |
366 |
adcroft |
1.1 |
IF ( exchUsesBarrier ) THEN |
367 |
|
|
C o On some machines ( T90 ) use system barrier rather than spinning. |
368 |
|
|
CALL BARRIER( myThid ) |
369 |
|
|
ELSE |
370 |
|
|
C o Spin waiting for completetion flag. This avoids a global-lock |
371 |
|
|
C i.e. we only lock waiting for data that we need. |
372 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
373 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
374 |
|
|
spinCount = 0 |
375 |
|
|
southCommMode = _tileCommModeS(bi,bj) |
376 |
|
|
northCommMode = _tileCommModeN(bi,bj) |
377 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
378 |
|
|
write(ioUnit,'(A,5I6,I12)') 'spin:', myProcId,bi,bj, |
379 |
|
|
& southRecvAck(1,bi,bj), northRecvAck(1,bi,bj), spinCount |
380 |
|
|
#endif |
381 |
adcroft |
1.1 |
10 CONTINUE |
382 |
jmc |
1.7 |
CALL FOOL_THE_COMPILER( spinCount ) |
383 |
adcroft |
1.1 |
spinCount = spinCount+1 |
384 |
jmc |
1.5 |
#ifdef DBUG_EXCH_VEC |
385 |
|
|
write(ioUnit,'(A,5I6,I12)') 'spin:', myProcId,bi,bj, |
386 |
|
|
& southRecvAck(1,bi,bj), northRecvAck(1,bi,bj), spinCount |
387 |
|
|
IF ( myThid.EQ.1 .AND. spinCount.GT. _EXCH_SPIN_LIMIT ) THEN |
388 |
|
|
STOP ' S/R EXCH_RECV_GET_X: spinCount > _EXCH_SPIN_LIMIT' |
389 |
|
|
ENDIF |
390 |
|
|
#endif |
391 |
|
|
IF ( southRecvAck(1,bi,bj) .EQ. 0 ) GOTO 10 |
392 |
|
|
IF ( northRecvAck(1,bi,bj) .EQ. 0 ) GOTO 10 |
393 |
adcroft |
1.1 |
C Clear outstanding requests |
394 |
jmc |
1.5 |
southRecvAck(1,bi,bj) = 0 |
395 |
|
|
northRecvAck(1,bi,bj) = 0 |
396 |
adcroft |
1.1 |
ENDDO |
397 |
|
|
ENDDO |
398 |
|
|
ENDIF |
399 |
jmc |
1.8 |
#endif /* EXCH_USE_SPINNING */ |
400 |
adcroft |
1.1 |
|
401 |
|
|
RETURN |
402 |
|
|
END |