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C $Header: /u/gcmpack/MITgcm/pkg/flt/exch2_send_put_vec.F,v 1.2 2012/09/04 00:46:15 jmc Exp $ |
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C $Name: $ |
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|
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_EEOPTIONS.h" |
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#undef DBUG_EXCH_VEC |
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|
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C-- Contents |
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C-- o EXCH2_SEND_PUT_VEC_RL |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CBOP 0 |
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C !ROUTINE: EXCH2_SEND_PUT_VEC_RL |
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|
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C !INTERFACE: |
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SUBROUTINE EXCH2_SEND_PUT_VEC_RL( |
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I array, |
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O bufRec, |
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O theHandle, |
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I myd1, myThid ) |
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C !DESCRIPTION: |
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C *==========================================================* |
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C | SUBROUTINE EXCH2_SEND_PUT_VEC_RL |
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C | o "Send" or "put" edges for RL 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 buffer |
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C *==========================================================* |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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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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#ifdef ALLOW_EXCH2 |
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#include "W2_EXCH2_SIZE.h" |
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#include "W2_EXCH2_TOPOLOGY.h" |
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#endif |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C array :: Input buffer array to send to Neighbours |
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C bufRec :: buffer array to collect Neighbour values |
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C myd1 :: size |
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C myThid :: my Thread Id. number |
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INTEGER myd1 |
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_RL array(myd1,nSx,nSy,4) |
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_RL bufRec(myd1,nSx,nSy,4) |
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#ifdef ALLOW_EXCH2 |
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INTEGER theHandle(2,W2_maxNeighbours,nSx,nSy) |
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#else |
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INTEGER theHandle |
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#endif |
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INTEGER myThid |
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CEOP |
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|
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#ifdef ALLOW_EXCH2 |
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|
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C !LOCAL VARIABLES: |
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C I :: Loop counters |
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C bi, bj :: tile indices |
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C theProc :: Variables used in message building |
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C theTag :: Variables used in message building |
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C theType :: Variables used in message building |
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C theSize :: Variables used in message building |
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INTEGER I,J,sBi,sBj, nN, thisTile, tgT, tgN, dir, sDir |
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INTEGER bi, bj |
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#ifdef ALLOW_USE_MPI |
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INTEGER theProc, theTag, theType, theSize, mpiRc |
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#endif |
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#ifdef DBUG_EXCH_VEC |
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INTEGER ioUnit |
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#endif |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Write data to exchange buffer |
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C Various actions are possible depending on the communication mode |
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C as follows: |
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C Mode Action |
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C -------- --------------------------- |
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C COMM_NONE Do nothing |
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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 |
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C Write data-ready Ack for east edge of west-neighbor tile |
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C Write data-ready Ack for west edge of east-neighbor tile |
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C Sync. memory |
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|
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_BEGIN_MASTER(myThid) |
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|
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#ifdef DBUG_EXCH_VEC |
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ioUnit = errorMessageUnit |
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#endif |
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|
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DO bj=1,nSy |
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DO bi=1,nSx |
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|
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thisTile = W2_myTileList(bi,bj) |
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|
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C- loop over neighboring tiles |
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DO nN=1,exch2_nNeighbours(thisTile) |
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|
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tgT = exch2_neighbourId(nN, thisTile ) |
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dir = exch2_neighbourDir(nN,thisTile) |
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tgN = exch2_opposingSend(nN,thisTIle) |
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sDir = exch2_neighbourDir(tgN,tgT) |
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|
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IF ( W2_myCommFlag(nN,bi,bj) .EQ. 'P' ) THEN |
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C find bi,bj of target tile |
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DO j=1,nSy |
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DO i=1,nSx |
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IF ( W2_myTileList(i,j).EQ.tgT ) THEN |
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sBi = i |
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sBj = j |
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ENDIF |
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ENDDO |
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ENDDO |
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DO I=1,myd1 |
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bufRec(I,sBi,sBj,sDir) = array(I,bi,bj,dir) |
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ENDDO |
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#ifdef ALLOW_USE_MPI |
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ELSEIF ( usingMPI .AND. |
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& W2_myCommFlag(nN,bi,bj) .EQ. 'M' ) THEN |
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C Send the data |
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theProc = W2_tileProc(tgT) - 1 |
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theTag = (thisTile-1)*W2_maxNeighbours + nN |
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theSize = myd1 |
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theType = _MPI_TYPE_RL |
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#ifdef DBUG_EXCH_VEC |
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write(ioUnit,'(A,5I5,I8)') 'qq1xW: ',myProcId,bi,bj, |
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& theProc,theTag, theSize |
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#endif |
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CALL MPI_Isend(array(1,bi,bj,dir), theSize, theType, |
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& theProc, theTag, MPI_COMM_MODEL, |
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& theHandle(1,nN,bi,bj), mpiRc) |
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#endif /* ALLOW_USE_MPI */ |
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ELSE |
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STOP 'S/R EXCH2_SEND_PUT_VEC_RL: Invalid commFlag.' |
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ENDIF |
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|
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C- nN |
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ENDDO |
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|
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C- bj,bi |
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ENDDO |
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ENDDO |
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|
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_END_MASTER(myThid) |
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|
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#endif /* ALLOW_EXCH2 */ |
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|
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RETURN |
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END |
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