1 |
C $Header: /u/gcmpack/models/MITgcmUV/eesupp/src/exch_rx_recv_get_x.template,v 1.1 2001/05/29 14:06:38 adcroft Exp $ |
2 |
C $Name: $ |
3 |
#include "CPP_EEOPTIONS.h" |
4 |
|
5 |
CBOP |
6 |
C !ROUTINE: EXCH_RX_RECV_GET_X |
7 |
|
8 |
C !INTERFACE: |
9 |
SUBROUTINE EXCH_RX_RECV_GET_X( array, |
10 |
I myOLw, myOLe, myOLs, myOLn, myNz, |
11 |
I exchWidthX, exchWidthY, |
12 |
I theSimulationMode, theCornerMode, myThid ) |
13 |
IMPLICIT NONE |
14 |
|
15 |
C !DESCRIPTION: |
16 |
C *==========================================================* |
17 |
C | SUBROUTINE RECV_RX_GET_X |
18 |
C | o "Send" or "put" X edges for RX array. |
19 |
C *==========================================================* |
20 |
C | Routine that invokes actual message passing send or |
21 |
C | direct "put" of data to update X faces of an XY[R] array. |
22 |
C *==========================================================* |
23 |
|
24 |
C !USES: |
25 |
C == Global variables == |
26 |
#include "SIZE.h" |
27 |
#include "EEPARAMS.h" |
28 |
#include "EESUPPORT.h" |
29 |
#include "EXCH.h" |
30 |
|
31 |
C !INPUT/OUTPUT PARAMETERS: |
32 |
C == Routine arguments == |
33 |
C array :: Array with edges to exchange. |
34 |
C myOLw :: West, East, North and South overlap region sizes. |
35 |
C myOLe |
36 |
C myOLn |
37 |
C myOLs |
38 |
C exchWidthX :: Width of data region exchanged. |
39 |
C exchWidthY |
40 |
C theSimulationMode :: Forward or reverse mode exchange ( provides |
41 |
C support for adjoint integration of code. ) |
42 |
C theCornerMode :: Flag indicating whether corner updates are |
43 |
C needed. |
44 |
C myThid :: Thread number of this instance of S/R EXCH... |
45 |
C eBl :: Edge buffer level |
46 |
INTEGER myOLw |
47 |
INTEGER myOLe |
48 |
INTEGER myOLs |
49 |
INTEGER myOLn |
50 |
INTEGER myNz |
51 |
_RX array(1-myOLw:sNx+myOLe, |
52 |
& 1-myOLs:sNy+myOLn, |
53 |
& myNZ, nSx, nSy) |
54 |
INTEGER exchWidthX |
55 |
INTEGER exchWidthY |
56 |
INTEGER theSimulationMode |
57 |
INTEGER theCornerMode |
58 |
INTEGER myThid |
59 |
|
60 |
C !LOCAL VARIABLES: |
61 |
C == Local variables == |
62 |
C I, J, K, iMin, iMax, iB :: Loop counters and extents |
63 |
C bi, bj |
64 |
C biW, bjW :: West tile indices |
65 |
C biE, bjE :: East tile indices |
66 |
C eBl :: Current exchange buffer level |
67 |
C theProc, theTag, theType, :: Variables used in message building |
68 |
C theSize |
69 |
C westCommMode :: Working variables holding type |
70 |
C eastCommMode of communication a particular |
71 |
C tile face uses. |
72 |
INTEGER I, J, K, iMin, iMax, iB, iB0 |
73 |
INTEGER bi, bj, biW, bjW, biE, bjE |
74 |
INTEGER eBl |
75 |
INTEGER westCommMode |
76 |
INTEGER eastCommMode |
77 |
INTEGER spinCount |
78 |
#ifdef ALLOW_USE_MPI |
79 |
INTEGER theProc, theTag, theType, theSize |
80 |
INTEGER mpiStatus(MPI_STATUS_SIZE,4), mpiRc |
81 |
#endif |
82 |
CEOP |
83 |
|
84 |
|
85 |
C-- Under a "put" scenario we |
86 |
C-- i. set completetion signal for buffer we put into. |
87 |
C-- ii. wait for completetion signal indicating data has been put in |
88 |
C-- our buffer. |
89 |
C-- Under a messaging mode we "receive" the message. |
90 |
C-- Under a "get" scenario we |
91 |
C-- i. Check that the data is ready. |
92 |
C-- ii. Read the data. |
93 |
C-- iii. Set data read flag + memory sync. |
94 |
|
95 |
|
96 |
DO bj=myByLo(myThid),myByHi(myThid) |
97 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
98 |
ebL = exchangeBufLevel(1,bi,bj) |
99 |
westCommMode = _tileCommModeW(bi,bj) |
100 |
eastCommMode = _tileCommModeE(bi,bj) |
101 |
biE = _tileBiE(bi,bj) |
102 |
bjE = _tileBjE(bi,bj) |
103 |
biW = _tileBiW(bi,bj) |
104 |
bjW = _tileBjW(bi,bj) |
105 |
IF ( westCommMode .EQ. COMM_MSG ) THEN |
106 |
#ifdef ALLOW_USE_MPI |
107 |
#ifndef ALWAYS_USE_MPI |
108 |
IF ( usingMPI ) THEN |
109 |
#endif |
110 |
theProc = tilePidW(bi,bj) |
111 |
theTag = _tileTagRecvW(bi,bj) |
112 |
theType = MPI_DOUBLE_PRECISION |
113 |
theSize = sNy*exchWidthX*myNz |
114 |
CALL MPI_Recv( westRecvBuf_RX(1,eBl,bi,bj), theSize, theType, |
115 |
& theProc, theTag, MPI_COMM_MODEL, |
116 |
& mpiStatus, mpiRc ) |
117 |
#ifndef ALWAYS_USE_MPI |
118 |
ENDIF |
119 |
#endif |
120 |
#endif /* ALLOW_USE_MPI */ |
121 |
ENDIF |
122 |
IF ( eastCommMode .EQ. COMM_MSG ) THEN |
123 |
#ifdef ALLOW_USE_MPI |
124 |
#ifndef ALWAYS_USE_MPI |
125 |
IF ( usingMPI ) THEN |
126 |
#endif |
127 |
theProc = tilePidE(bi,bj) |
128 |
theTag = _tileTagRecvE(bi,bj) |
129 |
theType = MPI_DOUBLE_PRECISION |
130 |
theSize = sNy*exchWidthX*myNz |
131 |
CALL MPI_Recv( eastRecvBuf_RX(1,eBl,bi,bj), theSize, theType, |
132 |
& theProc, theTag, MPI_COMM_MODEL, |
133 |
& mpiStatus, mpiRc ) |
134 |
#ifndef ALWAYS_USE_MPI |
135 |
ENDIF |
136 |
#endif |
137 |
#endif /* ALLOW_USE_MPI */ |
138 |
ENDIF |
139 |
ENDDO |
140 |
ENDDO |
141 |
|
142 |
C-- Wait for buffers I am going read to be ready. |
143 |
IF ( exchUsesBarrier ) THEN |
144 |
C o On some machines ( T90 ) use system barrier rather than spinning. |
145 |
CALL BARRIER( myThid ) |
146 |
ELSE |
147 |
C o Spin waiting for completetion flag. This avoids a global-lock |
148 |
C i.e. we only lock waiting for data that we need. |
149 |
DO bj=myByLo(myThid),myByHi(myThid) |
150 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
151 |
spinCount = 0 |
152 |
ebL = exchangeBufLevel(1,bi,bj) |
153 |
westCommMode = _tileCommModeW(bi,bj) |
154 |
eastCommMode = _tileCommModeE(bi,bj) |
155 |
10 CONTINUE |
156 |
CALL FOOL_THE_COMPILER |
157 |
spinCount = spinCount+1 |
158 |
C IF ( myThid .EQ. 1 .AND. spinCount .GT. _EXCH_SPIN_LIMIT ) THEN |
159 |
C WRITE(*,*) ' eBl = ', ebl |
160 |
C STOP ' S/R EXCH_RECV_GET_X: spinCount .GT. _EXCH_SPIN_LIMIT' |
161 |
C ENDIF |
162 |
IF ( westRecvAck(eBl,bi,bj) .EQ. 0. ) GOTO 10 |
163 |
IF ( eastRecvAck(eBl,bi,bj) .EQ. 0. ) GOTO 10 |
164 |
C Clear outstanding requests |
165 |
westRecvAck(eBl,bi,bj) = 0. |
166 |
eastRecvAck(eBl,bi,bj) = 0. |
167 |
|
168 |
IF ( exchNReqsX(1,bi,bj) .GT. 0 ) THEN |
169 |
#ifdef ALLOW_USE_MPI |
170 |
#ifndef ALWAYS_USE_MPI |
171 |
IF ( usingMPI ) THEN |
172 |
#endif |
173 |
CALL MPI_Waitall( exchNReqsX(1,bi,bj), exchReqIdX(1,1,bi,bj), |
174 |
& mpiStatus, mpiRC ) |
175 |
#ifndef ALWAYS_USE_MPI |
176 |
ENDIF |
177 |
#endif |
178 |
#endif /* ALLOW_USE_MPI */ |
179 |
ENDIF |
180 |
C Clear outstanding requests counter |
181 |
exchNReqsX(1,bi,bj) = 0 |
182 |
C Update statistics |
183 |
IF ( exchCollectStatistics ) THEN |
184 |
exchRecvXExchCount(1,bi,bj) = exchRecvXExchCount(1,bi,bj)+1 |
185 |
exchRecvXSpinCount(1,bi,bj) = |
186 |
& exchRecvXSpinCount(1,bi,bj)+spinCount |
187 |
exchRecvXSpinMax(1,bi,bj) = |
188 |
& MAX(exchRecvXSpinMax(1,bi,bj),spinCount) |
189 |
exchRecvXSpinMin(1,bi,bj) = |
190 |
& MIN(exchRecvXSpinMin(1,bi,bj),spinCount) |
191 |
ENDIF |
192 |
ENDDO |
193 |
ENDDO |
194 |
ENDIF |
195 |
|
196 |
C-- Read from the buffers |
197 |
DO bj=myByLo(myThid),myByHi(myThid) |
198 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
199 |
|
200 |
ebL = exchangeBufLevel(1,bi,bj) |
201 |
biE = _tileBiE(bi,bj) |
202 |
bjE = _tileBjE(bi,bj) |
203 |
biW = _tileBiW(bi,bj) |
204 |
bjW = _tileBjW(bi,bj) |
205 |
westCommMode = _tileCommModeW(bi,bj) |
206 |
eastCommMode = _tileCommModeE(bi,bj) |
207 |
IF ( _theSimulationMode .EQ. FORWARD_SIMULATION ) THEN |
208 |
iMin = sNx+1 |
209 |
iMax = sNx+exchWidthX |
210 |
iB0 = 0 |
211 |
IF ( eastCommMode .EQ. COMM_PUT |
212 |
& .OR. eastCommMode .EQ. COMM_MSG ) THEN |
213 |
iB = 0 |
214 |
DO K=1,myNz |
215 |
DO J=1,sNy |
216 |
DO I=iMin,iMax |
217 |
iB = iB + 1 |
218 |
array(I,J,K,bi,bj) = eastRecvBuf_RX(iB,eBl,bi,bj) |
219 |
ENDDO |
220 |
ENDDO |
221 |
ENDDO |
222 |
ELSEIF ( eastCommMode .EQ. COMM_GET ) THEN |
223 |
DO K=1,myNz |
224 |
DO J=1,sNy |
225 |
iB = iB0 |
226 |
DO I=iMin,iMax |
227 |
iB = iB+1 |
228 |
array(I,J,K,bi,bj) = array(iB,J,K,biE,bjE) |
229 |
ENDDO |
230 |
ENDDO |
231 |
ENDDO |
232 |
ENDIF |
233 |
ELSEIF ( _theSimulationMode .EQ. REVERSE_SIMULATION ) THEN |
234 |
iMin = sNx-exchWidthX+1 |
235 |
iMax = sNx |
236 |
iB0 = 1-exchWidthX-1 |
237 |
IF ( eastCommMode .EQ. COMM_PUT |
238 |
& .OR. eastCommMode .EQ. COMM_MSG ) THEN |
239 |
iB = 0 |
240 |
DO K=1,myNz |
241 |
DO J=1,sNy |
242 |
DO I=iMin,iMax |
243 |
iB = iB + 1 |
244 |
array(I,J,K,bi,bj) = |
245 |
& array(I,J,K,bi,bj)+eastRecvBuf_RX(iB,eBl,bi,bj) |
246 |
ENDDO |
247 |
ENDDO |
248 |
ENDDO |
249 |
ELSEIF ( eastCommMode .EQ. COMM_GET ) THEN |
250 |
DO K=1,myNz |
251 |
DO J=1,sNy |
252 |
iB = iB0 |
253 |
DO I=iMin,iMax |
254 |
iB = iB+1 |
255 |
array(I,J,K,bi,bj) = |
256 |
& array(I,J,K,bi,bj)+array(iB,J,K,biE,bjE) |
257 |
ENDDO |
258 |
ENDDO |
259 |
ENDDO |
260 |
ENDIF |
261 |
ENDIF |
262 |
IF ( _theSimulationMode .EQ. FORWARD_SIMULATION ) THEN |
263 |
iMin = 1-exchWidthX |
264 |
iMax = 0 |
265 |
iB0 = sNx-exchWidthX |
266 |
IF ( westCommMode .EQ. COMM_PUT |
267 |
& .OR. westCommMode .EQ. COMM_MSG ) THEN |
268 |
iB = 0 |
269 |
DO K=1,myNz |
270 |
DO J=1,sNy |
271 |
DO I=iMin,iMax |
272 |
iB = iB + 1 |
273 |
array(I,J,K,bi,bj) = westRecvBuf_RX(iB,eBl,bi,bj) |
274 |
ENDDO |
275 |
ENDDO |
276 |
ENDDO |
277 |
ELSEIF ( westCommMode .EQ. COMM_GET ) THEN |
278 |
DO K=1,myNz |
279 |
DO J=1,sNy |
280 |
iB = iB0 |
281 |
DO I=iMin,iMax |
282 |
iB = iB+1 |
283 |
array(I,J,K,bi,bj) = array(iB,J,K,biW,bjW) |
284 |
ENDDO |
285 |
ENDDO |
286 |
ENDDO |
287 |
ENDIF |
288 |
ELSEIF ( _theSimulationMode .EQ. REVERSE_SIMULATION ) THEN |
289 |
iMin = 1 |
290 |
iMax = 1+exchWidthX-1 |
291 |
iB0 = sNx |
292 |
IF ( westCommMode .EQ. COMM_PUT |
293 |
& .OR. westCommMode .EQ. COMM_MSG ) THEN |
294 |
iB = 0 |
295 |
DO K=1,myNz |
296 |
DO J=1,sNy |
297 |
DO I=iMin,iMax |
298 |
iB = iB + 1 |
299 |
array(I,J,K,bi,bj) = |
300 |
& array(I,J,K,bi,bj)+westRecvBuf_RX(iB,eBl,bi,bj) |
301 |
ENDDO |
302 |
ENDDO |
303 |
ENDDO |
304 |
ELSEIF ( westCommMode .EQ. COMM_GET ) THEN |
305 |
DO K=1,myNz |
306 |
DO J=1,sNy |
307 |
iB = iB0 |
308 |
DO I=iMin,iMax |
309 |
iB = iB+1 |
310 |
array(I,J,K,bi,bj) = |
311 |
& array(I,J,K,bi,bj)+array(iB,J,K,biW,bjW) |
312 |
ENDDO |
313 |
ENDDO |
314 |
ENDDO |
315 |
ENDIF |
316 |
ENDIF |
317 |
|
318 |
ENDDO |
319 |
ENDDO |
320 |
|
321 |
RETURN |
322 |
END |