1 |
C $Header: /u/gcmpack/MITgcm/eesupp/src/exch_rx_recv_get_x.template,v 1.9 2008/03/18 21:34:01 utke 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 |
INTEGER myBxLoSave(MAX_NO_THREADS) |
85 |
INTEGER myBxHiSave(MAX_NO_THREADS) |
86 |
INTEGER myByLoSave(MAX_NO_THREADS) |
87 |
INTEGER myByHiSave(MAX_NO_THREADS) |
88 |
LOGICAL doingSingleThreadedComms |
89 |
|
90 |
doingSingleThreadedComms = .FALSE. |
91 |
#ifdef ALLOW_USE_MPI |
92 |
#ifndef ALWAYS_USE_MPI |
93 |
IF ( usingMPI ) THEN |
94 |
#endif |
95 |
C Set default behavior to have MPI comms done by a single thread. |
96 |
C Most MPI implementations don't support concurrent comms from |
97 |
C several threads. |
98 |
IF ( nThreads .GT. 1 ) THEN |
99 |
_BARRIER |
100 |
_BEGIN_MASTER( myThid ) |
101 |
DO I=1,nThreads |
102 |
myBxLoSave(I) = myBxLo(I) |
103 |
myBxHiSave(I) = myBxHi(I) |
104 |
myByLoSave(I) = myByLo(I) |
105 |
myByHiSave(I) = myByHi(I) |
106 |
ENDDO |
107 |
C Comment out loop below and myB[xy][Lo|Hi](1) settings below |
108 |
C if you want to get multi-threaded MPI comms. |
109 |
DO I=1,nThreads |
110 |
myBxLo(I) = 0 |
111 |
myBxHi(I) = -1 |
112 |
myByLo(I) = 0 |
113 |
myByHi(I) = -1 |
114 |
ENDDO |
115 |
myBxLo(1) = 1 |
116 |
myBxHi(1) = nSx |
117 |
myByLo(1) = 1 |
118 |
myByHi(1) = nSy |
119 |
doingSingleThreadedComms = .TRUE. |
120 |
_END_MASTER( myThid ) |
121 |
_BARRIER |
122 |
ENDIF |
123 |
#ifndef ALWAYS_USE_MPI |
124 |
ENDIF |
125 |
#endif |
126 |
#endif |
127 |
|
128 |
C-- Under a "put" scenario we |
129 |
C-- i. set completetion signal for buffer we put into. |
130 |
C-- ii. wait for completetion signal indicating data has been put in |
131 |
C-- our buffer. |
132 |
C-- Under a messaging mode we "receive" the message. |
133 |
C-- Under a "get" scenario we |
134 |
C-- i. Check that the data is ready. |
135 |
C-- ii. Read the data. |
136 |
C-- iii. Set data read flag + memory sync. |
137 |
|
138 |
|
139 |
DO bj=myByLo(myThid),myByHi(myThid) |
140 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
141 |
ebL = exchangeBufLevel(1,bi,bj) |
142 |
westCommMode = _tileCommModeW(bi,bj) |
143 |
eastCommMode = _tileCommModeE(bi,bj) |
144 |
biE = _tileBiE(bi,bj) |
145 |
bjE = _tileBjE(bi,bj) |
146 |
biW = _tileBiW(bi,bj) |
147 |
bjW = _tileBjW(bi,bj) |
148 |
IF ( westCommMode .EQ. COMM_MSG ) THEN |
149 |
#ifdef ALLOW_USE_MPI |
150 |
#ifndef ALWAYS_USE_MPI |
151 |
IF ( usingMPI ) THEN |
152 |
#endif |
153 |
theProc = tilePidW(bi,bj) |
154 |
theTag = _tileTagRecvW(bi,bj) |
155 |
theType = _MPI_TYPE_RX |
156 |
theSize = sNy*exchWidthX*myNz |
157 |
# ifndef ALLOW_AUTODIFF_OPENAD |
158 |
CALL MPI_Recv( westRecvBuf_RX(1,eBl,bi,bj), theSize, theType, |
159 |
& theProc, theTag, MPI_COMM_MODEL, |
160 |
& mpiStatus, mpiRc ) |
161 |
# else |
162 |
CALL ampi_recv_RX( |
163 |
& westRecvBuf_RX(1,eBl,bi,bj) , |
164 |
& theSize , |
165 |
& theType , |
166 |
& theProc , |
167 |
& theTag , |
168 |
& MPI_COMM_MODEL , |
169 |
& exchReqIdX(exchNReqsX(1,bi,bj)+1,1,bi,bj), |
170 |
& exchNReqsX(1,bi,bj), |
171 |
& mpiStatus , |
172 |
& mpiRc ) |
173 |
# endif /* ALLOW_AUTODIFF_OPENAD */ |
174 |
#ifndef ALWAYS_USE_MPI |
175 |
ENDIF |
176 |
#endif |
177 |
#endif /* ALLOW_USE_MPI */ |
178 |
ENDIF |
179 |
IF ( eastCommMode .EQ. COMM_MSG ) THEN |
180 |
#ifdef ALLOW_USE_MPI |
181 |
#ifndef ALWAYS_USE_MPI |
182 |
IF ( usingMPI ) THEN |
183 |
#endif |
184 |
theProc = tilePidE(bi,bj) |
185 |
theTag = _tileTagRecvE(bi,bj) |
186 |
theType = _MPI_TYPE_RX |
187 |
theSize = sNy*exchWidthX*myNz |
188 |
# ifndef ALLOW_AUTODIFF_OPENAD |
189 |
CALL MPI_Recv( eastRecvBuf_RX(1,eBl,bi,bj), theSize, theType, |
190 |
& theProc, theTag, MPI_COMM_MODEL, |
191 |
& mpiStatus, mpiRc ) |
192 |
# else |
193 |
CALL ampi_recv_RX( |
194 |
& eastRecvBuf_RX(1,eBl,bi,bj) , |
195 |
& theSize , |
196 |
& theType , |
197 |
& theProc , |
198 |
& theTag , |
199 |
& MPI_COMM_MODEL , |
200 |
& exchReqIdX(exchNReqsX(1,bi,bj)+1,1,bi,bj), |
201 |
& exchNReqsX(1,bi,bj), |
202 |
& mpiStatus , |
203 |
& mpiRc ) |
204 |
# endif /* ALLOW_AUTODIFF_OPENAD */ |
205 |
#ifndef ALWAYS_USE_MPI |
206 |
ENDIF |
207 |
#endif |
208 |
#endif /* ALLOW_USE_MPI */ |
209 |
ENDIF |
210 |
ENDDO |
211 |
ENDDO |
212 |
|
213 |
C-- Wait for buffers I am going read to be ready. |
214 |
IF ( exchUsesBarrier ) THEN |
215 |
C o On some machines ( T90 ) use system barrier rather than spinning. |
216 |
CALL BARRIER( myThid ) |
217 |
ELSE |
218 |
C o Spin waiting for completetion flag. This avoids a global-lock |
219 |
C i.e. we only lock waiting for data that we need. |
220 |
DO bj=myByLo(myThid),myByHi(myThid) |
221 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
222 |
spinCount = 0 |
223 |
ebL = exchangeBufLevel(1,bi,bj) |
224 |
westCommMode = _tileCommModeW(bi,bj) |
225 |
eastCommMode = _tileCommModeE(bi,bj) |
226 |
# ifndef ALLOW_AUTODIFF_OPENAD |
227 |
10 CONTINUE |
228 |
CALL FOOL_THE_COMPILER( spinCount ) |
229 |
spinCount = spinCount+1 |
230 |
C IF ( myThid .EQ. 1 .AND. spinCount .GT. _EXCH_SPIN_LIMIT ) THEN |
231 |
C WRITE(*,*) ' eBl = ', ebl |
232 |
C STOP ' S/R EXCH_RECV_GET_X: spinCount .GT. _EXCH_SPIN_LIMIT' |
233 |
C ENDIF |
234 |
IF ( westRecvAck(eBl,bi,bj) .EQ. 0 ) GOTO 10 |
235 |
IF ( eastRecvAck(eBl,bi,bj) .EQ. 0 ) GOTO 10 |
236 |
# else |
237 |
do while ((westRecvAck(eBl,bi,bj) .EQ. 0. |
238 |
& .or. |
239 |
& eastRecvAck(eBl,bi,bj) .EQ. 0. )) |
240 |
CALL FOOL_THE_COMPILER( spinCount ) |
241 |
spinCount = spinCount+1 |
242 |
end do |
243 |
# endif /* ALLOW_AUTODIFF_OPENAD */ |
244 |
C Clear outstanding requests |
245 |
westRecvAck(eBl,bi,bj) = 0 |
246 |
eastRecvAck(eBl,bi,bj) = 0 |
247 |
|
248 |
IF ( exchNReqsX(1,bi,bj) .GT. 0 ) THEN |
249 |
#ifdef ALLOW_USE_MPI |
250 |
#ifndef ALWAYS_USE_MPI |
251 |
IF ( usingMPI ) THEN |
252 |
#endif |
253 |
# ifndef ALLOW_AUTODIFF_OPENAD |
254 |
CALL MPI_Waitall( exchNReqsX(1,bi,bj), exchReqIdX(1,1,bi,bj), |
255 |
& mpiStatus, mpiRC ) |
256 |
# else |
257 |
CALL ampi_waitall( |
258 |
& exchNReqsX(1,bi,bj), |
259 |
& exchReqIdX(1,1,bi,bj), |
260 |
& mpiStatus, |
261 |
& mpiRC ) |
262 |
# endif /* ALLOW_AUTODIFF_OPENAD */ |
263 |
#ifndef ALWAYS_USE_MPI |
264 |
ENDIF |
265 |
#endif |
266 |
#endif /* ALLOW_USE_MPI */ |
267 |
ENDIF |
268 |
C Clear outstanding requests counter |
269 |
exchNReqsX(1,bi,bj) = 0 |
270 |
C Update statistics |
271 |
IF ( exchCollectStatistics ) THEN |
272 |
exchRecvXExchCount(1,bi,bj) = exchRecvXExchCount(1,bi,bj)+1 |
273 |
exchRecvXSpinCount(1,bi,bj) = |
274 |
& exchRecvXSpinCount(1,bi,bj)+spinCount |
275 |
exchRecvXSpinMax(1,bi,bj) = |
276 |
& MAX(exchRecvXSpinMax(1,bi,bj),spinCount) |
277 |
exchRecvXSpinMin(1,bi,bj) = |
278 |
& MIN(exchRecvXSpinMin(1,bi,bj),spinCount) |
279 |
ENDIF |
280 |
ENDDO |
281 |
ENDDO |
282 |
ENDIF |
283 |
|
284 |
C-- Read from the buffers |
285 |
DO bj=myByLo(myThid),myByHi(myThid) |
286 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
287 |
|
288 |
ebL = exchangeBufLevel(1,bi,bj) |
289 |
biE = _tileBiE(bi,bj) |
290 |
bjE = _tileBjE(bi,bj) |
291 |
biW = _tileBiW(bi,bj) |
292 |
bjW = _tileBjW(bi,bj) |
293 |
westCommMode = _tileCommModeW(bi,bj) |
294 |
eastCommMode = _tileCommModeE(bi,bj) |
295 |
IF ( _theSimulationMode .EQ. FORWARD_SIMULATION ) THEN |
296 |
iMin = sNx+1 |
297 |
iMax = sNx+exchWidthX |
298 |
iB0 = 0 |
299 |
IF ( eastCommMode .EQ. COMM_PUT |
300 |
& .OR. eastCommMode .EQ. COMM_MSG ) THEN |
301 |
iB = 0 |
302 |
DO K=1,myNz |
303 |
DO J=1,sNy |
304 |
DO I=iMin,iMax |
305 |
iB = iB + 1 |
306 |
array(I,J,K,bi,bj) = eastRecvBuf_RX(iB,eBl,bi,bj) |
307 |
ENDDO |
308 |
ENDDO |
309 |
ENDDO |
310 |
ELSEIF ( eastCommMode .EQ. COMM_GET ) THEN |
311 |
DO K=1,myNz |
312 |
DO J=1,sNy |
313 |
iB = iB0 |
314 |
DO I=iMin,iMax |
315 |
iB = iB+1 |
316 |
array(I,J,K,bi,bj) = array(iB,J,K,biE,bjE) |
317 |
ENDDO |
318 |
ENDDO |
319 |
ENDDO |
320 |
ENDIF |
321 |
ELSEIF ( _theSimulationMode .EQ. REVERSE_SIMULATION ) THEN |
322 |
iMin = sNx-exchWidthX+1 |
323 |
iMax = sNx |
324 |
iB0 = 1-exchWidthX-1 |
325 |
IF ( eastCommMode .EQ. COMM_PUT |
326 |
& .OR. eastCommMode .EQ. COMM_MSG ) THEN |
327 |
iB = 0 |
328 |
DO K=1,myNz |
329 |
DO J=1,sNy |
330 |
DO I=iMin,iMax |
331 |
iB = iB + 1 |
332 |
array(I,J,K,bi,bj) = |
333 |
& array(I,J,K,bi,bj)+eastRecvBuf_RX(iB,eBl,bi,bj) |
334 |
ENDDO |
335 |
ENDDO |
336 |
ENDDO |
337 |
ELSEIF ( eastCommMode .EQ. COMM_GET ) THEN |
338 |
DO K=1,myNz |
339 |
DO J=1,sNy |
340 |
iB = iB0 |
341 |
DO I=iMin,iMax |
342 |
iB = iB+1 |
343 |
array(I,J,K,bi,bj) = |
344 |
& array(I,J,K,bi,bj)+array(iB,J,K,biE,bjE) |
345 |
ENDDO |
346 |
ENDDO |
347 |
ENDDO |
348 |
ENDIF |
349 |
ENDIF |
350 |
IF ( _theSimulationMode .EQ. FORWARD_SIMULATION ) THEN |
351 |
iMin = 1-exchWidthX |
352 |
iMax = 0 |
353 |
iB0 = sNx-exchWidthX |
354 |
IF ( westCommMode .EQ. COMM_PUT |
355 |
& .OR. westCommMode .EQ. COMM_MSG ) THEN |
356 |
iB = 0 |
357 |
DO K=1,myNz |
358 |
DO J=1,sNy |
359 |
DO I=iMin,iMax |
360 |
iB = iB + 1 |
361 |
array(I,J,K,bi,bj) = westRecvBuf_RX(iB,eBl,bi,bj) |
362 |
ENDDO |
363 |
ENDDO |
364 |
ENDDO |
365 |
ELSEIF ( westCommMode .EQ. COMM_GET ) THEN |
366 |
DO K=1,myNz |
367 |
DO J=1,sNy |
368 |
iB = iB0 |
369 |
DO I=iMin,iMax |
370 |
iB = iB+1 |
371 |
array(I,J,K,bi,bj) = array(iB,J,K,biW,bjW) |
372 |
ENDDO |
373 |
ENDDO |
374 |
ENDDO |
375 |
ENDIF |
376 |
ELSEIF ( _theSimulationMode .EQ. REVERSE_SIMULATION ) THEN |
377 |
iMin = 1 |
378 |
iMax = 1+exchWidthX-1 |
379 |
iB0 = sNx |
380 |
IF ( westCommMode .EQ. COMM_PUT |
381 |
& .OR. westCommMode .EQ. COMM_MSG ) THEN |
382 |
iB = 0 |
383 |
DO K=1,myNz |
384 |
DO J=1,sNy |
385 |
DO I=iMin,iMax |
386 |
iB = iB + 1 |
387 |
array(I,J,K,bi,bj) = |
388 |
& array(I,J,K,bi,bj)+westRecvBuf_RX(iB,eBl,bi,bj) |
389 |
ENDDO |
390 |
ENDDO |
391 |
ENDDO |
392 |
ELSEIF ( westCommMode .EQ. COMM_GET ) THEN |
393 |
DO K=1,myNz |
394 |
DO J=1,sNy |
395 |
iB = iB0 |
396 |
DO I=iMin,iMax |
397 |
iB = iB+1 |
398 |
array(I,J,K,bi,bj) = |
399 |
& array(I,J,K,bi,bj)+array(iB,J,K,biW,bjW) |
400 |
ENDDO |
401 |
ENDDO |
402 |
ENDDO |
403 |
ENDIF |
404 |
ENDIF |
405 |
|
406 |
ENDDO |
407 |
ENDDO |
408 |
|
409 |
_BARRIER |
410 |
IF ( doingSingleThreadedComms ) THEN |
411 |
C Restore saved settings that were stored to allow |
412 |
C single thred comms. |
413 |
_BEGIN_MASTER(myThid) |
414 |
DO I=1,nThreads |
415 |
myBxLo(I) = myBxLoSave(I) |
416 |
myBxHi(I) = myBxHiSave(I) |
417 |
myByLo(I) = myByLoSave(I) |
418 |
myByHi(I) = myByHiSave(I) |
419 |
ENDDO |
420 |
_END_MASTER(myThid) |
421 |
ENDIF |
422 |
_BARRIER |
423 |
|
424 |
RETURN |
425 |
END |