| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/flt/exch_send_put_vec.F,v 1.4 2009/01/04 00:58:23 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "FLT_OPTIONS.h" |
| 5 |
|
| 6 |
C-- Contents |
| 7 |
C-- o EXCH_RL_SEND_PUT_VEC_X |
| 8 |
C-- o EXCH_RL_SEND_PUT_VEC_Y |
| 9 |
|
| 10 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 11 |
|
| 12 |
SUBROUTINE EXCH_RL_SEND_PUT_VEC_X( |
| 13 |
I arrayE, arrayW, |
| 14 |
O bufRecE, bufRecW, |
| 15 |
I myd1, myThid ) |
| 16 |
C /==========================================================\ |
| 17 |
C | SUBROUTINE EXCH_RL_SEND_PUT_X | |
| 18 |
C | o "Send" or "put" X edges for RL 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 |
IMPLICIT NONE |
| 24 |
|
| 25 |
C == Global variables == |
| 26 |
#include "SIZE.h" |
| 27 |
#include "EEPARAMS.h" |
| 28 |
#include "EESUPPORT.h" |
| 29 |
#include "FLT.h" |
| 30 |
#include "EXCH.h" |
| 31 |
C == Routine arguments == |
| 32 |
C arrayE - Array to be exchanged. |
| 33 |
C arrayW |
| 34 |
C myd1 - sizes. |
| 35 |
C myThid - Thread number of this instance of S/R EXCH... |
| 36 |
INTEGER myd1 |
| 37 |
_RL arrayE(myd1,nSx,nSy), arrayW(myd1,nSx,nSy) |
| 38 |
_RL bufRecE(myd1,nSx,nSy), bufRecW(myd1,nSx,nSy) |
| 39 |
INTEGER myThid |
| 40 |
CEndOfInterface |
| 41 |
|
| 42 |
#ifdef ALLOW_FLT |
| 43 |
C == Local variables == |
| 44 |
C I, J - Loop counters and extents |
| 45 |
C bi, bj |
| 46 |
C biW, bjW - West tile indices |
| 47 |
C biE, bjE - East tile indices |
| 48 |
C theProc, theTag, theType, - Variables used in message building |
| 49 |
C theSize |
| 50 |
C westCommMode - Working variables holding type |
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C eastCommMode of communication a particular |
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C tile face uses. |
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INTEGER I |
| 54 |
INTEGER bi, bj, biW, bjW, biE, bjE |
| 55 |
INTEGER westCommMode |
| 56 |
INTEGER eastCommMode |
| 57 |
|
| 58 |
#ifdef ALLOW_USE_MPI |
| 59 |
INTEGER theProc, theTag, theType, theSize, mpiRc |
| 60 |
#endif |
| 61 |
C-- Write data to exchange buffer |
| 62 |
C Various actions are possible depending on the communication mode |
| 63 |
C as follows: |
| 64 |
C Mode Action |
| 65 |
C -------- --------------------------- |
| 66 |
C COMM_NONE Do nothing |
| 67 |
C |
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C COMM_MSG Message passing communication ( e.g. MPI ) |
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C Fill west send buffer from this tile. |
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C Send data with tag identifying tile and direction. |
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C Fill east send buffer from this tile. |
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C Send data with tag identifying tile and direction. |
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C |
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C COMM_PUT "Put" communication ( UMP_, shmemput, etc... ) |
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C Fill east receive buffer of west-neighbor tile |
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C Fill west receive buffer of east-neighbor tile |
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C Sync. memory |
| 78 |
C Write data-ready Ack for east edge of west-neighbor |
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C tile |
| 80 |
C Write data-ready Ack for west edge of east-neighbor |
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C tile |
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C Sync. memory |
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C |
| 84 |
DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
| 86 |
|
| 87 |
westCommMode = _tileCommModeW(bi,bj) |
| 88 |
eastCommMode = _tileCommModeE(bi,bj) |
| 89 |
biE = _tileBiE(bi,bj) |
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bjE = _tileBjE(bi,bj) |
| 91 |
biW = _tileBiW(bi,bj) |
| 92 |
bjW = _tileBjW(bi,bj) |
| 93 |
|
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C o Send or Put west edge |
| 95 |
IF ( westCommMode .EQ. COMM_MSG ) THEN |
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C Send the data |
| 97 |
#ifdef ALLOW_USE_MPI |
| 98 |
#ifndef ALWAYS_USE_MPI |
| 99 |
IF ( usingMPI ) THEN |
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#endif |
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theProc = tilePidW(bi,bj) |
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theTag = _tileTagSendW(bi,bj) |
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theSize = myd1 |
| 104 |
theType = MPI_DOUBLE_PRECISION |
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c exchVReqsX(1,bi,bj) = exchVReqsX(1,bi,bj)+1 |
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exchNReqsX(1,bi,bj) = exchNReqsX(1,bi,bj)+1 |
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CALL MPI_Isend(arrayW(1,bi,bj), theSize, theType, |
| 108 |
& theProc, theTag, MPI_COMM_MODEL, |
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& exchReqIdX(exchNReqsX(1,bi,bj),1,bi,bj), mpiRc) |
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c & exchReqVIdX(exchVReqsX(1,bi,bj),1,bi,bj), mpiRc) |
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#ifndef ALWAYS_USE_MPI |
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ENDIF |
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#endif |
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#endif /* ALLOW_USE_MPI */ |
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eastRecvAck(1,biW,bjW) = 1. |
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ELSEIF ( westCommMode .EQ. COMM_PUT ) THEN |
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c write(0,*) 'SEND_PUT_VEC_X: copy E:',biW,bjW,' <- W:',bi,bj |
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DO I=1,myd1 |
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bufRecE(I,biW,bjW) = arrayW(I,bi,bj) |
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ENDDO |
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ELSEIF ( westCommMode .NE. COMM_NONE ) THEN |
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STOP ' S/R EXCH: Invalid commW mode.' |
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ENDIF |
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|
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C o Send or Put east edge |
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IF ( eastCommMode .EQ. COMM_MSG ) THEN |
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C Send the data |
| 128 |
#ifdef ALLOW_USE_MPI |
| 129 |
#ifndef ALWAYS_USE_MPI |
| 130 |
IF ( usingMPI ) THEN |
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#endif |
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theProc = tilePidE(bi,bj) |
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theTag = _tileTagSendE(bi,bj) |
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theSize = myd1 |
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theType = MPI_DOUBLE_PRECISION |
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c exchVReqsX(1,bi,bj) = exchVReqsX(1,bi,bj)+1 |
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exchNReqsX(1,bi,bj) = exchNReqsX(1,bi,bj)+1 |
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c if (theProc .eq. 2 .or. theProc .eq. 4) then |
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c if (arrayE(1,bi,bj) .ne. 0.) then |
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c write(errormessageunit,*) 'qq1y: ',myprocid, |
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c & theProc,theTag,theSize,(arrayE(i,bi,bj),i=1,32) |
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c endif |
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c endif |
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CALL MPI_Isend(arrayE(1,bi,bj), theSize, theType, |
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& theProc, theTag, MPI_COMM_MODEL, |
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& exchReqIdX(exchNReqsX(1,bi,bj),1,bi,bj), mpiRc) |
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c & exchReqVIdX(exchVReqsX(1,bi,bj),1,bi,bj), mpiRc) |
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#ifndef ALWAYS_USE_MPI |
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ENDIF |
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#endif |
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#endif /* ALLOW_USE_MPI */ |
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westRecvAck(1,biE,bjE) = 1. |
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ELSEIF ( eastCommMode .EQ. COMM_PUT ) THEN |
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c write(0,*) 'SEND_PUT_VEC_X: copy W:',biE,bjE,' <- E:',bi,bj |
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DO I=1,myd1 |
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bufRecW(I,biE,bjE) = arrayE(I,bi,bj) |
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ENDDO |
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ELSEIF ( eastCommMode .NE. COMM_NONE ) THEN |
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STOP ' S/R EXCH: Invalid commE mode.' |
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ENDIF |
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|
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ENDDO |
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ENDDO |
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|
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C-- Signal completetion ( making sure system-wide memory state is |
| 166 |
C-- consistent ). |
| 167 |
|
| 168 |
C ** NOTE ** We are relying on being able to produce strong-ordered |
| 169 |
C memory semantics here. In other words we assume that there is a |
| 170 |
C mechanism which can ensure that by the time the Ack is seen the |
| 171 |
C overlap region data that will be exchanged is up to date. |
| 172 |
IF ( exchNeedsMemSync ) CALL MEMSYNC |
| 173 |
|
| 174 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 175 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
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biE = _tileBiE(bi,bj) |
| 177 |
bjE = _tileBjE(bi,bj) |
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biW = _tileBiW(bi,bj) |
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bjW = _tileBjW(bi,bj) |
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westCommMode = _tileCommModeW(bi,bj) |
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eastCommMode = _tileCommModeE(bi,bj) |
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IF ( westCommMode .EQ. COMM_PUT ) eastRecvAck(1,biW,bjW) = 1. |
| 183 |
IF ( eastCommMode .EQ. COMM_PUT ) westRecvAck(1,biE,bjE) = 1. |
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IF ( westCommMode .EQ. COMM_GET ) eastRecvAck(1,biW,bjW) = 1. |
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IF ( eastCommMode .EQ. COMM_GET ) westRecvAck(1,biE,bjE) = 1. |
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ENDDO |
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ENDDO |
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|
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C-- Make sure "ack" setting is seen system-wide. |
| 190 |
C Here strong-ordering is not an issue but we want to make |
| 191 |
C sure that processes that might spin on the above Ack settings |
| 192 |
C will see the setting. |
| 193 |
C ** NOTE ** On some machines we wont spin on the Ack setting |
| 194 |
C ( particularly the T90 ), instead we will use s system barrier. |
| 195 |
C On the T90 the system barrier is very fast and switches out the |
| 196 |
C thread while it waits. On most machines the system barrier |
| 197 |
C is much too slow and if we own the machine and have one thread |
| 198 |
C per process preemption is not a problem. |
| 199 |
IF ( exchNeedsMemSync ) CALL MEMSYNC |
| 200 |
|
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#endif /* ALLOW_FLT */ |
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RETURN |
| 203 |
END |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 206 |
|
| 207 |
SUBROUTINE EXCH_RL_SEND_PUT_VEC_Y( |
| 208 |
I arrayN, arrayS, |
| 209 |
O bufRecN, bufRecS, |
| 210 |
I myd1, myThid ) |
| 211 |
C /==========================================================\ |
| 212 |
C | SUBROUTINE EXCH_RL_SEND_PUT_Y | |
| 213 |
C | o "Send" or "put" Y edges for RL array. | |
| 214 |
C |==========================================================| |
| 215 |
C | Routine that invokes actual message passing send or | |
| 216 |
C | direct "put" of data to update X faces of an XY[R] array.| |
| 217 |
C \==========================================================/ |
| 218 |
IMPLICIT NONE |
| 219 |
|
| 220 |
C == Global variables == |
| 221 |
#include "SIZE.h" |
| 222 |
#include "EEPARAMS.h" |
| 223 |
#include "EESUPPORT.h" |
| 224 |
#include "FLT.h" |
| 225 |
#include "EXCH.h" |
| 226 |
C == Routine arguments == |
| 227 |
C arrayN - Array to be exchanged. |
| 228 |
C arrayS |
| 229 |
C myd1 - sizes. |
| 230 |
C myThid - Thread number of this instance of S/R EXCH... |
| 231 |
INTEGER myd1 |
| 232 |
_RL arrayN(myd1,nSx,nSy), arrayS(myd1,nSx,nSy) |
| 233 |
_RL bufRecN(myd1,nSx,nSy), bufRecS(myd1,nSx,nSy) |
| 234 |
INTEGER myThid |
| 235 |
CEndOfInterface |
| 236 |
|
| 237 |
#ifdef ALLOW_FLT |
| 238 |
C == Local variables == |
| 239 |
C I, J - Loop counters and extents |
| 240 |
C bi, bj |
| 241 |
C biN, bjN - North tile indices |
| 242 |
C biS, bjS - South tile indices |
| 243 |
C theProc, theTag, theType, - Variables used in message building |
| 244 |
C theSize |
| 245 |
C westCommMode - Working variables holding type |
| 246 |
C eastCommMode of communication a particular |
| 247 |
C tile face uses. |
| 248 |
INTEGER I |
| 249 |
INTEGER bi, bj, biS, bjS, biN, bjN |
| 250 |
INTEGER southCommMode |
| 251 |
INTEGER northCommMode |
| 252 |
|
| 253 |
#ifdef ALLOW_USE_MPI |
| 254 |
INTEGER theProc, theTag, theType, theSize, mpiRc |
| 255 |
#endif |
| 256 |
C-- Write data to exchange buffer |
| 257 |
C Various actions are possible depending on the communication mode |
| 258 |
C as follows: |
| 259 |
C Mode Action |
| 260 |
C -------- --------------------------- |
| 261 |
C COMM_NONE Do nothing |
| 262 |
C |
| 263 |
C COMM_MSG Message passing communication ( e.g. MPI ) |
| 264 |
C Fill west send buffer from this tile. |
| 265 |
C Send data with tag identifying tile and direction. |
| 266 |
C Fill east send buffer from this tile. |
| 267 |
C Send data with tag identifying tile and direction. |
| 268 |
C |
| 269 |
C COMM_PUT "Put" communication ( UMP_, shmemput, etc... ) |
| 270 |
C Fill east receive buffer of south-neighbor tile |
| 271 |
C Fill west receive buffer of north-neighbor tile |
| 272 |
C Sync. memory |
| 273 |
C Write data-ready Ack for east edge of south-neighbor |
| 274 |
C tile |
| 275 |
C Write data-ready Ack for west edge of north-neighbor |
| 276 |
C tile |
| 277 |
C Sync. memory |
| 278 |
C |
| 279 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 280 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 281 |
|
| 282 |
southCommMode = _tileCommModeS(bi,bj) |
| 283 |
northCommMode = _tileCommModeN(bi,bj) |
| 284 |
biN = _tileBiN(bi,bj) |
| 285 |
bjN = _tileBjN(bi,bj) |
| 286 |
biS = _tileBiS(bi,bj) |
| 287 |
bjS = _tileBjS(bi,bj) |
| 288 |
|
| 289 |
C o Send or Put south edge |
| 290 |
IF ( southCommMode .EQ. COMM_MSG ) THEN |
| 291 |
C Send the data |
| 292 |
#ifdef ALLOW_USE_MPI |
| 293 |
#ifndef ALWAYS_USE_MPI |
| 294 |
IF ( usingMPI ) THEN |
| 295 |
#endif |
| 296 |
theProc = tilePidS(bi,bj) |
| 297 |
theTag = _tileTagSendS(bi,bj) |
| 298 |
theSize = myd1 |
| 299 |
theType = MPI_DOUBLE_PRECISION |
| 300 |
c exchVReqsY(1,bi,bj) = exchVReqsY(1,bi,bj)+1 |
| 301 |
exchNReqsY(1,bi,bj) = exchNReqsY(1,bi,bj)+1 |
| 302 |
CALL MPI_Isend(arrayS(1,bi,bj), theSize, theType, |
| 303 |
& theProc, theTag, MPI_COMM_MODEL, |
| 304 |
& exchReqIdY(exchNReqsY(1,bi,bj),1,bi,bj), mpiRc) |
| 305 |
c & exchReqVIdY(exchVReqsY(1,bi,bj),1,bi,bj), mpiRc) |
| 306 |
#ifndef ALWAYS_USE_MPI |
| 307 |
ENDIF |
| 308 |
#endif |
| 309 |
#endif /* ALLOW_USE_MPI */ |
| 310 |
northRecvAck(1,biS,bjS) = 1. |
| 311 |
ELSEIF ( southCommMode .EQ. COMM_PUT ) THEN |
| 312 |
c write(0,*) 'SEND_PUT_VEC_Y: copy N:',biS,bjS,' <- S:',bi,bj |
| 313 |
DO I=1,myd1 |
| 314 |
bufRecN(I,biS,bjS) = arrayS(I,bi,bj) |
| 315 |
ENDDO |
| 316 |
ELSEIF ( southCommMode .NE. COMM_NONE ) THEN |
| 317 |
STOP ' S/R EXCH: Invalid commS mode.' |
| 318 |
ENDIF |
| 319 |
|
| 320 |
C o Send or Put north edge |
| 321 |
IF ( northCommMode .EQ. COMM_MSG ) THEN |
| 322 |
C Send the data |
| 323 |
#ifdef ALLOW_USE_MPI |
| 324 |
#ifndef ALWAYS_USE_MPI |
| 325 |
IF ( usingMPI ) THEN |
| 326 |
#endif |
| 327 |
theProc = tilePidN(bi,bj) |
| 328 |
theTag = _tileTagSendN(bi,bj) |
| 329 |
theSize = myd1 |
| 330 |
theType = MPI_DOUBLE_PRECISION |
| 331 |
c exchVReqsY(1,bi,bj) = exchVReqsY(1,bi,bj)+1 |
| 332 |
exchNReqsY(1,bi,bj) = exchNReqsY(1,bi,bj)+1 |
| 333 |
CALL MPI_Isend(arrayN(1,bi,bj), theSize, theType, |
| 334 |
& theProc, theTag, MPI_COMM_MODEL, |
| 335 |
& exchReqIdY(exchNReqsY(1,bi,bj),1,bi,bj), mpiRc) |
| 336 |
c & exchReqVIdY(exchVReqsY(1,bi,bj),1,bi,bj), mpiRc) |
| 337 |
#ifndef ALWAYS_USE_MPI |
| 338 |
ENDIF |
| 339 |
#endif |
| 340 |
#endif /* ALLOW_USE_MPI */ |
| 341 |
southRecvAck(1,biN,bjN) = 1. |
| 342 |
ELSEIF ( northCommMode .EQ. COMM_PUT ) THEN |
| 343 |
c write(0,*) 'SEND_PUT_VEC_Y: copy S:',biN,bjN,' <- N:',bi,bj |
| 344 |
DO I=1,myd1 |
| 345 |
bufRecS(I,biN,bjN) = arrayN(I,bi,bj) |
| 346 |
ENDDO |
| 347 |
ELSEIF ( northCommMode .NE. COMM_NONE ) THEN |
| 348 |
STOP ' S/R EXCH: Invalid commN mode.' |
| 349 |
ENDIF |
| 350 |
|
| 351 |
ENDDO |
| 352 |
ENDDO |
| 353 |
|
| 354 |
C-- Signal completetion ( making sure system-wide memory state is |
| 355 |
C-- consistent ). |
| 356 |
|
| 357 |
C ** NOTE ** We are relying on being able to produce strong-ordered |
| 358 |
C memory semantics here. In other words we assume that there is a |
| 359 |
C mechanism which can ensure that by the time the Ack is seen the |
| 360 |
C overlap region data that will be exchanged is up to date. |
| 361 |
IF ( exchNeedsMemSync ) CALL MEMSYNC |
| 362 |
|
| 363 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 364 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 365 |
biN = _tileBiN(bi,bj) |
| 366 |
bjN = _tileBjN(bi,bj) |
| 367 |
biS = _tileBiS(bi,bj) |
| 368 |
bjS = _tileBjS(bi,bj) |
| 369 |
southCommMode = _tileCommModeE(bi,bj) |
| 370 |
northCommMode = _tileCommModeN(bi,bj) |
| 371 |
IF ( southCommMode .EQ. COMM_PUT ) northRecvAck(1,biS,bjS) = 1. |
| 372 |
IF ( northCommMode .EQ. COMM_PUT ) southRecvAck(1,biN,bjN) = 1. |
| 373 |
IF ( southCommMode .EQ. COMM_GET ) northRecvAck(1,biS,bjS) = 1. |
| 374 |
IF ( northCommMode .EQ. COMM_GET ) southRecvAck(1,biN,bjN) = 1. |
| 375 |
ENDDO |
| 376 |
ENDDO |
| 377 |
|
| 378 |
C-- Make sure "ack" setting is seen system-wide. |
| 379 |
C Here strong-ordering is not an issue but we want to make |
| 380 |
C sure that processes that might spin on the above Ack settings |
| 381 |
C will see the setting. |
| 382 |
C ** NOTE ** On some machines we wont spin on the Ack setting |
| 383 |
C ( particularly the T90 ), instead we will use s system barrier. |
| 384 |
C On the T90 the system barrier is very fast and switches out the |
| 385 |
C thread while it waits. On most machines the system barrier |
| 386 |
C is much too slow and if we own the machine and have one thread |
| 387 |
C per process preemption is not a problem. |
| 388 |
IF ( exchNeedsMemSync ) CALL MEMSYNC |
| 389 |
|
| 390 |
#endif /* ALLOW_FLT */ |
| 391 |
RETURN |
| 392 |
END |
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