| 1 |
jmc |
1.8 |
C $Header: /u/gcmpack/MITgcm/eesupp/src/exch_rx_recv_get_y.template,v 1.7 2005/11/11 03:01:26 cnh Exp $ |
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cnh |
1.2 |
C $Name: $ |
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adcroft |
1.1 |
#include "CPP_EEOPTIONS.h" |
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cnh |
1.2 |
CBOP |
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C !ROUTINE: EXCH_RX_RECV_GET_Y |
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C !INTERFACE: |
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adcroft |
1.1 |
SUBROUTINE EXCH_RX_RECV_GET_Y( array, |
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I myOLw, myOLe, myOLs, myOLn, myNz, |
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I exchWidthX, exchWidthY, |
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I theSimulationMode, theCornerMode, myThid ) |
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IMPLICIT NONE |
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cnh |
1.2 |
C !DESCRIPTION: |
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C *==========================================================* |
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C | SUBROUTINE RECV_GET_Y |
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C | o "Send" or "put" Y edges for RX array. |
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C *==========================================================* |
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C | Routine that invokes actual message passing send or |
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C | direct "put" of data to update X faces of an XY[R] array. |
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C *==========================================================* |
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C !USES: |
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adcroft |
1.1 |
C == Global variables == |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "EESUPPORT.h" |
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#include "EXCH.h" |
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cnh |
1.2 |
C !INPUT/OUTPUT PARAMETERS: |
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adcroft |
1.1 |
C == Routine arguments == |
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cnh |
1.2 |
C array :: Array with edges to exchange. |
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C myOLw :: West, East, North and South overlap region sizes. |
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adcroft |
1.1 |
C myOLe |
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C myOLn |
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C myOLs |
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cnh |
1.2 |
C exchWidthX :: Width of data region exchanged. |
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adcroft |
1.1 |
C exchWidthY |
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cnh |
1.2 |
C theSimulationMode :: Forward or reverse mode exchange ( provides |
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C support for adjoint integration of code. ) |
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C theCornerMode :: Flag indicating whether corner updates are |
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C needed. |
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C myThid :: Thread number of this instance of S/R EXCH... |
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C eBl :: Edge buffer level |
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adcroft |
1.1 |
INTEGER myOLw |
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INTEGER myOLe |
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INTEGER myOLs |
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INTEGER myOLn |
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INTEGER myNz |
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_RX array(1-myOLw:sNx+myOLe, |
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& 1-myOLs:sNy+myOLn, |
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& myNZ, nSx, nSy) |
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INTEGER exchWidthX |
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INTEGER exchWidthY |
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INTEGER theSimulationMode |
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INTEGER theCornerMode |
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INTEGER myThid |
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cnh |
1.2 |
C !LOCAL VARIABLES: |
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adcroft |
1.1 |
C == Local variables == |
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cnh |
1.2 |
C I, J, K, iMin, iMax, iB :: Loop counters and extents |
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adcroft |
1.1 |
C bi, bj |
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cnh |
1.2 |
C biS, bjS :: South tile indices |
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C biN, bjN :: North tile indices |
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C eBl :: Current exchange buffer level |
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C theProc, theTag, theType, :: Variables used in message building |
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adcroft |
1.1 |
C theSize |
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cnh |
1.2 |
C southCommMode :: Working variables holding type |
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C northCommMode of communication a particular |
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C tile face uses. |
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C spinCount :: Exchange statistics counter |
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C mpiStatus :: MPI error code |
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adcroft |
1.1 |
INTEGER I, J, K, iMin, iMax, jMin, jMax, iB, iB0 |
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INTEGER bi, bj, biS, bjS, biN, bjN |
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INTEGER eBl |
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INTEGER southCommMode |
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INTEGER northCommMode |
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INTEGER spinCount |
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#ifdef ALLOW_USE_MPI |
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INTEGER theProc, theTag, theType, theSize |
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INTEGER mpiStatus(MPI_STATUS_SIZE,4), mpiRc |
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#endif |
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cnh |
1.2 |
CEOP |
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adcroft |
1.1 |
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cnh |
1.5 |
INTEGER myBxLoSave(MAX_NO_THREADS) |
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INTEGER myBxHiSave(MAX_NO_THREADS) |
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INTEGER myByLoSave(MAX_NO_THREADS) |
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INTEGER myByHiSave(MAX_NO_THREADS) |
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cnh |
1.6 |
LOGICAL doingSingleThreadedComms |
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cnh |
1.5 |
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cnh |
1.6 |
doingSingleThreadedComms = .FALSE. |
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#ifdef ALLOW_USE_MPI |
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#ifndef ALWAYS_USE_MPI |
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IF ( usingMPI ) THEN |
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#endif |
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C Set default behavior to have MPI comms done by a single thread. |
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C Most MPI implementations don't support concurrent comms from |
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C several threads. |
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IF ( nThreads .GT. 1 ) THEN |
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_BARRIER |
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_BEGIN_MASTER( myThid ) |
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DO I=1,nThreads |
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myBxLoSave(I) = myBxLo(I) |
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myBxHiSave(I) = myBxHi(I) |
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myByLoSave(I) = myByLo(I) |
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myByHiSave(I) = myByHi(I) |
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ENDDO |
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C Comment out loop below and myB[xy][Lo|Hi](1) settings below |
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C if you want to get multi-threaded MPI comms. |
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DO I=1,nThreads |
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myBxLo(I) = 0 |
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myBxHi(I) = -1 |
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myByLo(I) = 0 |
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myByHi(I) = -1 |
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ENDDO |
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myBxLo(1) = 1 |
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myBxHi(1) = nSx |
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myByLo(1) = 1 |
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myByHi(1) = nSy |
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doingSingleThreadedComms = .TRUE. |
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_END_MASTER( myThid ) |
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_BARRIER |
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ENDIF |
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#ifndef ALWAYS_USE_MPI |
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cnh |
1.5 |
ENDIF |
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cnh |
1.6 |
#endif |
| 128 |
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#endif |
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adcroft |
1.1 |
C-- Under a "put" scenario we |
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C-- i. set completetion signal for buffer we put into. |
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C-- ii. wait for completetion signal indicating data has been put in |
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C-- our buffer. |
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C-- Under a messaging mode we "receive" the message. |
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C-- Under a "get" scenario we |
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C-- i. Check that the data is ready. |
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C-- ii. Read the data. |
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C-- iii. Set data read flag + memory sync. |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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ebL = exchangeBufLevel(1,bi,bj) |
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southCommMode = _tileCommModeS(bi,bj) |
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northCommMode = _tileCommModeN(bi,bj) |
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biN = _tileBiN(bi,bj) |
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bjN = _tileBjN(bi,bj) |
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biS = _tileBiS(bi,bj) |
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bjS = _tileBjS(bi,bj) |
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IF ( southCommMode .EQ. COMM_MSG ) THEN |
| 150 |
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#ifdef ALLOW_USE_MPI |
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#ifndef ALWAYS_USE_MPI |
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IF ( usingMPI ) THEN |
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#endif |
| 154 |
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theProc = tilePidS(bi,bj) |
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theTag = _tileTagRecvS(bi,bj) |
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dimitri |
1.3 |
theType = _MPI_TYPE_RX |
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adcroft |
1.1 |
theSize = sNx*exchWidthY*myNz |
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IF ( theCornerMode .EQ. EXCH_UPDATE_CORNERS ) |
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& theSize = (sNx+2*exchWidthX)*exchWidthY*myNz |
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CALL MPI_Recv( southRecvBuf_RX(1,eBl,bi,bj), theSize, theType, |
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& theProc, theTag, MPI_COMM_MODEL, |
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& mpiStatus, mpiRc ) |
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#ifndef ALWAYS_USE_MPI |
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ENDIF |
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#endif |
| 166 |
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#endif /* ALLOW_USE_MPI */ |
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ENDIF |
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IF ( northCommMode .EQ. COMM_MSG ) THEN |
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#ifdef ALLOW_USE_MPI |
| 170 |
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#ifndef ALWAYS_USE_MPI |
| 171 |
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IF ( usingMPI ) THEN |
| 172 |
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#endif |
| 173 |
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theProc = tilePidN(bi,bj) |
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theTag = _tileTagRecvN(bi,bj) |
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dimitri |
1.3 |
theType = _MPI_TYPE_RX |
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adcroft |
1.1 |
theSize = sNx*exchWidthY*myNz |
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IF ( theCornerMode .EQ. EXCH_UPDATE_CORNERS ) |
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& theSize = (sNx+2*exchWidthX)*exchWidthY*myNz |
| 179 |
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CALL MPI_Recv( northRecvBuf_RX(1,eBl,bi,bj), theSize, theType, |
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& theProc, theTag, MPI_COMM_MODEL, |
| 181 |
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& mpiStatus, mpiRc ) |
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#ifndef ALWAYS_USE_MPI |
| 183 |
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ENDIF |
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#endif |
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#endif /* ALLOW_USE_MPI */ |
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ENDIF |
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ENDDO |
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ENDDO |
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C-- Wait for buffers I am going read to be ready. |
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IF ( exchUsesBarrier ) THEN |
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C o On some machines ( T90 ) use system barrier rather than spinning. |
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CALL BARRIER( myThid ) |
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ELSE |
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C o Spin waiting for completetion flag. This avoids a global-lock |
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C i.e. we only lock waiting for data that we need. |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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ebL = exchangeBufLevel(1,bi,bj) |
| 200 |
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southCommMode = _tileCommModeS(bi,bj) |
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northCommMode = _tileCommModeN(bi,bj) |
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spinCount = 0 |
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10 CONTINUE |
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jmc |
1.4 |
CALL FOOL_THE_COMPILER( spinCount ) |
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adcroft |
1.1 |
spinCount = spinCount+1 |
| 206 |
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C IF ( myThid .EQ. 1 .AND. spinCount .GT. _EXCH_SPIN_LIMIT ) THEN |
| 207 |
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C STOP ' S/R EXCH_RECV_GET_Y: spinCount .GT. _EXCH_SPIN_LIMIT' |
| 208 |
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C ENDIF |
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jmc |
1.8 |
IF ( southRecvAck(eBl,bi,bj) .EQ. 0 ) GOTO 10 |
| 210 |
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IF ( northRecvAck(eBl,bi,bj) .EQ. 0 ) GOTO 10 |
| 211 |
adcroft |
1.1 |
C Clear requests |
| 212 |
jmc |
1.8 |
southRecvAck(eBl,bi,bj) = 0 |
| 213 |
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northRecvAck(eBl,bi,bj) = 0 |
| 214 |
adcroft |
1.1 |
C Update statistics |
| 215 |
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IF ( exchCollectStatistics ) THEN |
| 216 |
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exchRecvYExchCount(1,bi,bj) = exchRecvYExchCount(1,bi,bj)+1 |
| 217 |
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exchRecvYSpinCount(1,bi,bj) = |
| 218 |
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& exchRecvYSpinCount(1,bi,bj)+spinCount |
| 219 |
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exchRecvYSpinMax(1,bi,bj) = |
| 220 |
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& MAX(exchRecvYSpinMax(1,bi,bj),spinCount) |
| 221 |
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exchRecvYSpinMin(1,bi,bj) = |
| 222 |
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& MIN(exchRecvYSpinMin(1,bi,bj),spinCount) |
| 223 |
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ENDIF |
| 224 |
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| 225 |
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| 226 |
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IF ( exchNReqsY(1,bi,bj) .GT. 0 ) THEN |
| 227 |
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#ifdef ALLOW_USE_MPI |
| 228 |
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#ifndef ALWAYS_USE_MPI |
| 229 |
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IF ( usingMPI ) THEN |
| 230 |
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#endif |
| 231 |
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CALL MPI_Waitall( exchNReqsY(1,bi,bj), exchReqIdY(1,1,bi,bj), |
| 232 |
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& mpiStatus, mpiRC ) |
| 233 |
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#ifndef ALWAYS_USE_MPI |
| 234 |
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ENDIF |
| 235 |
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#endif |
| 236 |
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#endif /* ALLOW_USE_MPI */ |
| 237 |
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ENDIF |
| 238 |
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C Clear outstanding requests counter |
| 239 |
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exchNReqsY(1,bi,bj) = 0 |
| 240 |
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ENDDO |
| 241 |
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ENDDO |
| 242 |
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ENDIF |
| 243 |
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| 244 |
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C-- Read from the buffers |
| 245 |
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DO bj=myByLo(myThid),myByHi(myThid) |
| 246 |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
| 247 |
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| 248 |
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ebL = exchangeBufLevel(1,bi,bj) |
| 249 |
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biN = _tileBiN(bi,bj) |
| 250 |
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bjN = _tileBjN(bi,bj) |
| 251 |
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biS = _tileBiS(bi,bj) |
| 252 |
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bjS = _tileBjS(bi,bj) |
| 253 |
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southCommMode = _tileCommModeS(bi,bj) |
| 254 |
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northCommMode = _tileCommModeN(bi,bj) |
| 255 |
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IF ( theCornerMode .EQ. EXCH_UPDATE_CORNERS ) THEN |
| 256 |
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iMin = 1-exchWidthX |
| 257 |
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iMax = sNx+exchWidthX |
| 258 |
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ELSE |
| 259 |
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iMin = 1 |
| 260 |
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iMax = sNx |
| 261 |
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ENDIF |
| 262 |
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IF ( _theSimulationMode .EQ. FORWARD_SIMULATION ) THEN |
| 263 |
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jMin = sNy+1 |
| 264 |
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jMax = sNy+exchWidthY |
| 265 |
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iB0 = 0 |
| 266 |
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IF ( northCommMode .EQ. COMM_PUT |
| 267 |
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& .OR. northCommMode .EQ. COMM_MSG ) THEN |
| 268 |
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iB = 0 |
| 269 |
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DO K=1,myNz |
| 270 |
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DO J=jMin,jMax |
| 271 |
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DO I=iMin,iMax |
| 272 |
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iB = iB + 1 |
| 273 |
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array(I,J,K,bi,bj) = northRecvBuf_RX(iB,eBl,bi,bj) |
| 274 |
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ENDDO |
| 275 |
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ENDDO |
| 276 |
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ENDDO |
| 277 |
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ELSEIF ( northCommMode .EQ. COMM_GET ) THEN |
| 278 |
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DO K=1,myNz |
| 279 |
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iB = iB0 |
| 280 |
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DO J=jMin,jMax |
| 281 |
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iB = iB+1 |
| 282 |
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DO I=iMin,iMax |
| 283 |
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array(I,J,K,bi,bj) = array(I,iB,K,biN,bjN) |
| 284 |
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ENDDO |
| 285 |
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ENDDO |
| 286 |
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ENDDO |
| 287 |
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ENDIF |
| 288 |
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ELSEIF ( _theSimulationMode .EQ. REVERSE_SIMULATION ) THEN |
| 289 |
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jMin = sNy-exchWidthY+1 |
| 290 |
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jMax = sNy |
| 291 |
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iB0 = 1-exchWidthY-1 |
| 292 |
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IF ( northCommMode .EQ. COMM_PUT |
| 293 |
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& .OR. northCommMode .EQ. COMM_MSG ) THEN |
| 294 |
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iB = 0 |
| 295 |
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DO K=1,myNz |
| 296 |
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DO J=jMin,jMax |
| 297 |
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DO I=iMin,iMax |
| 298 |
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iB = iB + 1 |
| 299 |
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array(I,J,K,bi,bj) = |
| 300 |
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& array(I,J,K,bi,bj)+northRecvBuf_RX(iB,eBl,bi,bj) |
| 301 |
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ENDDO |
| 302 |
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ENDDO |
| 303 |
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ENDDO |
| 304 |
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ELSEIF ( northCommMode .EQ. COMM_GET ) THEN |
| 305 |
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DO K=1,myNz |
| 306 |
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iB = iB0 |
| 307 |
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DO J=jMin,jMax |
| 308 |
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iB = iB+1 |
| 309 |
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DO I=iMin,iMax |
| 310 |
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array(I,J,K,bi,bj) = |
| 311 |
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& array(I,J,K,bi,bj)+array(I,iB,K,biN,bjN) |
| 312 |
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ENDDO |
| 313 |
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ENDDO |
| 314 |
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ENDDO |
| 315 |
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ENDIF |
| 316 |
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ENDIF |
| 317 |
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| 318 |
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IF ( _theSimulationMode .EQ. FORWARD_SIMULATION ) THEN |
| 319 |
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jMin = 1-exchWidthY |
| 320 |
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jMax = 0 |
| 321 |
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iB0 = sNy-exchWidthY |
| 322 |
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IF ( southCommMode .EQ. COMM_PUT |
| 323 |
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& .OR. southCommMode .EQ. COMM_MSG ) THEN |
| 324 |
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iB = 0 |
| 325 |
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DO K=1,myNz |
| 326 |
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DO J=jMin,jMax |
| 327 |
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DO I=iMin,iMax |
| 328 |
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iB = iB + 1 |
| 329 |
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array(I,J,K,bi,bj) = southRecvBuf_RX(iB,eBl,bi,bj) |
| 330 |
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ENDDO |
| 331 |
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ENDDO |
| 332 |
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ENDDO |
| 333 |
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ELSEIF ( southCommMode .EQ. COMM_GET ) THEN |
| 334 |
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DO K=1,myNz |
| 335 |
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iB = iB0 |
| 336 |
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DO J=jMin,jMax |
| 337 |
|
|
iB = iB+1 |
| 338 |
|
|
DO I=iMin,iMax |
| 339 |
|
|
array(I,J,K,bi,bj) = array(I,iB,K,biS,bjS) |
| 340 |
|
|
ENDDO |
| 341 |
|
|
ENDDO |
| 342 |
|
|
ENDDO |
| 343 |
|
|
ENDIF |
| 344 |
|
|
ELSEIF ( _theSimulationMode .EQ. REVERSE_SIMULATION ) THEN |
| 345 |
|
|
jMin = 1 |
| 346 |
|
|
jMax = 1+exchWidthY-1 |
| 347 |
|
|
iB0 = sNy |
| 348 |
|
|
IF ( southCommMode .EQ. COMM_PUT |
| 349 |
|
|
& .OR. southCommMode .EQ. COMM_MSG ) THEN |
| 350 |
|
|
iB = 0 |
| 351 |
|
|
DO K=1,myNz |
| 352 |
|
|
DO J=jMin,jMax |
| 353 |
|
|
DO I=iMin,iMax |
| 354 |
|
|
iB = iB + 1 |
| 355 |
|
|
array(I,J,K,bi,bj) = |
| 356 |
|
|
& array(I,J,K,bi,bj)+southRecvBuf_RX(iB,eBl,bi,bj) |
| 357 |
|
|
ENDDO |
| 358 |
|
|
ENDDO |
| 359 |
|
|
ENDDO |
| 360 |
|
|
ELSEIF ( southCommMode .EQ. COMM_GET ) THEN |
| 361 |
|
|
DO K=1,myNz |
| 362 |
|
|
iB = iB0 |
| 363 |
|
|
DO J=jMin,jMax |
| 364 |
|
|
iB = iB+1 |
| 365 |
|
|
DO I=iMin,iMax |
| 366 |
|
|
array(I,J,K,bi,bj) = |
| 367 |
|
|
& array(I,J,K,bi,bj)+array(I,iB,K,biS,bjS) |
| 368 |
|
|
ENDDO |
| 369 |
|
|
ENDDO |
| 370 |
|
|
ENDDO |
| 371 |
|
|
ENDIF |
| 372 |
|
|
ENDIF |
| 373 |
|
|
ENDDO |
| 374 |
|
|
ENDDO |
| 375 |
|
|
|
| 376 |
cnh |
1.7 |
_BARRIER |
| 377 |
cnh |
1.6 |
IF ( doingSingleThreadedComms ) THEN |
| 378 |
|
|
C Restore saved settings that were stored to allow |
| 379 |
|
|
C single thred comms. |
| 380 |
|
|
_BEGIN_MASTER(myThid) |
| 381 |
|
|
DO I=1,nThreads |
| 382 |
|
|
myBxLo(I) = myBxLoSave(I) |
| 383 |
|
|
myBxHi(I) = myBxHiSave(I) |
| 384 |
|
|
myByLo(I) = myByLoSave(I) |
| 385 |
|
|
myByHi(I) = myByHiSave(I) |
| 386 |
|
|
ENDDO |
| 387 |
|
|
_END_MASTER(myThid) |
| 388 |
|
|
ENDIF |
| 389 |
cnh |
1.7 |
_BARRIER |
| 390 |
cnh |
1.5 |
|
| 391 |
adcroft |
1.1 |
RETURN |
| 392 |
|
|
END |
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