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cnh |
1.5 |
C $Header: /u/gcmpack/MITgcm/eesupp/src/exch_rx_recv_get_x.template,v 1.4 2004/09/02 14:02:50 jmc 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_X |
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C !INTERFACE: |
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1.1 |
SUBROUTINE EXCH_RX_RECV_GET_X( 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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1.2 |
C !DESCRIPTION: |
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C *==========================================================* |
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C | SUBROUTINE RECV_RX_GET_X |
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C | o "Send" or "put" X 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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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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1.2 |
C !INPUT/OUTPUT PARAMETERS: |
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1.1 |
C == Routine arguments == |
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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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1.1 |
C myOLe |
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C myOLn |
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C myOLs |
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1.2 |
C exchWidthX :: Width of data region exchanged. |
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1.1 |
C exchWidthY |
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1.2 |
C theSimulationMode :: Forward or reverse mode exchange ( provides |
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1.1 |
C support for adjoint integration of code. ) |
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1.2 |
C theCornerMode :: Flag indicating whether corner updates are |
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1.1 |
C needed. |
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1.2 |
C myThid :: Thread number of this instance of S/R EXCH... |
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C eBl :: Edge buffer level |
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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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1.2 |
C !LOCAL VARIABLES: |
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1.1 |
C == Local variables == |
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1.2 |
C I, J, K, iMin, iMax, iB :: Loop counters and extents |
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1.1 |
C bi, bj |
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C biW, bjW :: West tile indices |
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C biE, bjE :: East 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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C theSize |
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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, J, K, iMin, iMax, iB, iB0 |
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INTEGER bi, bj, biW, bjW, biE, bjE |
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INTEGER eBl |
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INTEGER westCommMode |
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INTEGER eastCommMode |
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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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1.2 |
CEOP |
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1.1 |
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cnh |
1.5 |
#ifdef USE_SINGLE_THREADED_EXCH_COMMS |
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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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#endif /* SINGLE_THREADED_EXCH_COMMS */ |
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#ifdef USE_SINGLE_THREADED_EXCH_COMMS |
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_BARRIER |
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IF ( myThid .EQ. 1 ) THEN |
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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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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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ENDIF |
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_BARRIER |
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#endif /* SINGLE_THREADED_EXCH_COMMS */ |
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1.1 |
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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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westCommMode = _tileCommModeW(bi,bj) |
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eastCommMode = _tileCommModeE(bi,bj) |
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biE = _tileBiE(bi,bj) |
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bjE = _tileBjE(bi,bj) |
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biW = _tileBiW(bi,bj) |
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bjW = _tileBjW(bi,bj) |
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IF ( westCommMode .EQ. COMM_MSG ) THEN |
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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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theProc = tilePidW(bi,bj) |
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theTag = _tileTagRecvW(bi,bj) |
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dimitri |
1.3 |
theType = _MPI_TYPE_RX |
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adcroft |
1.1 |
theSize = sNy*exchWidthX*myNz |
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CALL MPI_Recv( westRecvBuf_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 |
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#endif /* ALLOW_USE_MPI */ |
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ENDIF |
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IF ( eastCommMode .EQ. COMM_MSG ) THEN |
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#ifdef ALLOW_USE_MPI |
152 |
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#ifndef ALWAYS_USE_MPI |
153 |
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IF ( usingMPI ) THEN |
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#endif |
155 |
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theProc = tilePidE(bi,bj) |
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theTag = _tileTagRecvE(bi,bj) |
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dimitri |
1.3 |
theType = _MPI_TYPE_RX |
158 |
adcroft |
1.1 |
theSize = sNy*exchWidthX*myNz |
159 |
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CALL MPI_Recv( eastRecvBuf_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 |
163 |
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ENDIF |
164 |
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#endif |
165 |
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#endif /* ALLOW_USE_MPI */ |
166 |
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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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spinCount = 0 |
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ebL = exchangeBufLevel(1,bi,bj) |
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westCommMode = _tileCommModeW(bi,bj) |
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eastCommMode = _tileCommModeE(bi,bj) |
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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 |
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C IF ( myThid .EQ. 1 .AND. spinCount .GT. _EXCH_SPIN_LIMIT ) THEN |
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C WRITE(*,*) ' eBl = ', ebl |
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C STOP ' S/R EXCH_RECV_GET_X: spinCount .GT. _EXCH_SPIN_LIMIT' |
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C ENDIF |
190 |
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IF ( westRecvAck(eBl,bi,bj) .EQ. 0. ) GOTO 10 |
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IF ( eastRecvAck(eBl,bi,bj) .EQ. 0. ) GOTO 10 |
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C Clear outstanding requests |
193 |
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westRecvAck(eBl,bi,bj) = 0. |
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eastRecvAck(eBl,bi,bj) = 0. |
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IF ( exchNReqsX(1,bi,bj) .GT. 0 ) THEN |
197 |
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#ifdef ALLOW_USE_MPI |
198 |
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#ifndef ALWAYS_USE_MPI |
199 |
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IF ( usingMPI ) THEN |
200 |
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#endif |
201 |
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CALL MPI_Waitall( exchNReqsX(1,bi,bj), exchReqIdX(1,1,bi,bj), |
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& mpiStatus, mpiRC ) |
203 |
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#ifndef ALWAYS_USE_MPI |
204 |
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ENDIF |
205 |
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#endif |
206 |
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#endif /* ALLOW_USE_MPI */ |
207 |
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ENDIF |
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C Clear outstanding requests counter |
209 |
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exchNReqsX(1,bi,bj) = 0 |
210 |
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C Update statistics |
211 |
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IF ( exchCollectStatistics ) THEN |
212 |
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exchRecvXExchCount(1,bi,bj) = exchRecvXExchCount(1,bi,bj)+1 |
213 |
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exchRecvXSpinCount(1,bi,bj) = |
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& exchRecvXSpinCount(1,bi,bj)+spinCount |
215 |
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exchRecvXSpinMax(1,bi,bj) = |
216 |
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& MAX(exchRecvXSpinMax(1,bi,bj),spinCount) |
217 |
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exchRecvXSpinMin(1,bi,bj) = |
218 |
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& MIN(exchRecvXSpinMin(1,bi,bj),spinCount) |
219 |
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ENDIF |
220 |
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ENDDO |
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ENDDO |
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ENDIF |
223 |
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224 |
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C-- Read from the buffers |
225 |
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DO bj=myByLo(myThid),myByHi(myThid) |
226 |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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228 |
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ebL = exchangeBufLevel(1,bi,bj) |
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biE = _tileBiE(bi,bj) |
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bjE = _tileBjE(bi,bj) |
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biW = _tileBiW(bi,bj) |
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bjW = _tileBjW(bi,bj) |
233 |
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westCommMode = _tileCommModeW(bi,bj) |
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eastCommMode = _tileCommModeE(bi,bj) |
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IF ( _theSimulationMode .EQ. FORWARD_SIMULATION ) THEN |
236 |
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iMin = sNx+1 |
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iMax = sNx+exchWidthX |
238 |
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iB0 = 0 |
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IF ( eastCommMode .EQ. COMM_PUT |
240 |
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& .OR. eastCommMode .EQ. COMM_MSG ) THEN |
241 |
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iB = 0 |
242 |
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DO K=1,myNz |
243 |
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DO J=1,sNy |
244 |
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DO I=iMin,iMax |
245 |
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iB = iB + 1 |
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array(I,J,K,bi,bj) = eastRecvBuf_RX(iB,eBl,bi,bj) |
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ENDDO |
248 |
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ENDDO |
249 |
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ENDDO |
250 |
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ELSEIF ( eastCommMode .EQ. COMM_GET ) THEN |
251 |
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DO K=1,myNz |
252 |
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DO J=1,sNy |
253 |
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iB = iB0 |
254 |
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DO I=iMin,iMax |
255 |
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iB = iB+1 |
256 |
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array(I,J,K,bi,bj) = array(iB,J,K,biE,bjE) |
257 |
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ENDDO |
258 |
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ENDDO |
259 |
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ENDDO |
260 |
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ENDIF |
261 |
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ELSEIF ( _theSimulationMode .EQ. REVERSE_SIMULATION ) THEN |
262 |
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iMin = sNx-exchWidthX+1 |
263 |
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iMax = sNx |
264 |
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iB0 = 1-exchWidthX-1 |
265 |
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IF ( eastCommMode .EQ. COMM_PUT |
266 |
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& .OR. eastCommMode .EQ. COMM_MSG ) THEN |
267 |
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iB = 0 |
268 |
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DO K=1,myNz |
269 |
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DO J=1,sNy |
270 |
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DO I=iMin,iMax |
271 |
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iB = iB + 1 |
272 |
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array(I,J,K,bi,bj) = |
273 |
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& array(I,J,K,bi,bj)+eastRecvBuf_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 ( eastCommMode .EQ. COMM_GET ) THEN |
278 |
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DO K=1,myNz |
279 |
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DO J=1,sNy |
280 |
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iB = iB0 |
281 |
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DO I=iMin,iMax |
282 |
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iB = iB+1 |
283 |
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array(I,J,K,bi,bj) = |
284 |
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& array(I,J,K,bi,bj)+array(iB,J,K,biE,bjE) |
285 |
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ENDDO |
286 |
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ENDDO |
287 |
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ENDDO |
288 |
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ENDIF |
289 |
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ENDIF |
290 |
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IF ( _theSimulationMode .EQ. FORWARD_SIMULATION ) THEN |
291 |
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iMin = 1-exchWidthX |
292 |
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iMax = 0 |
293 |
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iB0 = sNx-exchWidthX |
294 |
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IF ( westCommMode .EQ. COMM_PUT |
295 |
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& .OR. westCommMode .EQ. COMM_MSG ) THEN |
296 |
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iB = 0 |
297 |
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DO K=1,myNz |
298 |
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DO J=1,sNy |
299 |
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DO I=iMin,iMax |
300 |
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iB = iB + 1 |
301 |
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array(I,J,K,bi,bj) = westRecvBuf_RX(iB,eBl,bi,bj) |
302 |
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ENDDO |
303 |
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ENDDO |
304 |
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ENDDO |
305 |
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ELSEIF ( westCommMode .EQ. COMM_GET ) THEN |
306 |
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DO K=1,myNz |
307 |
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DO J=1,sNy |
308 |
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iB = iB0 |
309 |
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DO I=iMin,iMax |
310 |
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iB = iB+1 |
311 |
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array(I,J,K,bi,bj) = array(iB,J,K,biW,bjW) |
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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ELSEIF ( _theSimulationMode .EQ. REVERSE_SIMULATION ) THEN |
317 |
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iMin = 1 |
318 |
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iMax = 1+exchWidthX-1 |
319 |
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iB0 = sNx |
320 |
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IF ( westCommMode .EQ. COMM_PUT |
321 |
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& .OR. westCommMode .EQ. COMM_MSG ) THEN |
322 |
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iB = 0 |
323 |
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DO K=1,myNz |
324 |
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DO J=1,sNy |
325 |
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DO I=iMin,iMax |
326 |
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iB = iB + 1 |
327 |
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array(I,J,K,bi,bj) = |
328 |
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& array(I,J,K,bi,bj)+westRecvBuf_RX(iB,eBl,bi,bj) |
329 |
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ENDDO |
330 |
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ENDDO |
331 |
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ENDDO |
332 |
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ELSEIF ( westCommMode .EQ. COMM_GET ) THEN |
333 |
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DO K=1,myNz |
334 |
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DO J=1,sNy |
335 |
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iB = iB0 |
336 |
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DO I=iMin,iMax |
337 |
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iB = iB+1 |
338 |
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array(I,J,K,bi,bj) = |
339 |
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& array(I,J,K,bi,bj)+array(iB,J,K,biW,bjW) |
340 |
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ENDDO |
341 |
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ENDDO |
342 |
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ENDDO |
343 |
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ENDIF |
344 |
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ENDIF |
345 |
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346 |
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ENDDO |
347 |
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ENDDO |
348 |
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349 |
cnh |
1.5 |
#ifdef USE_SINGLE_THREADED_EXCH_COMMS |
350 |
|
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_BARRIER |
351 |
|
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IF ( myThid .EQ. 1 ) THEN |
352 |
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DO I=1,nThreads |
353 |
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myBxLo(I) = myBxLoSave(I) |
354 |
|
|
myBxHi(I) = myBxHiSave(I) |
355 |
|
|
myByLo(I) = myByLoSave(I) |
356 |
|
|
myByHi(I) = myByHiSave(I) |
357 |
|
|
ENDDO |
358 |
|
|
ENDIF |
359 |
|
|
_BARRIER |
360 |
|
|
#endif /* USE_SINGLE_THREADED_EXCH_COMMS */ |
361 |
|
|
|
362 |
adcroft |
1.1 |
RETURN |
363 |
|
|
END |