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C $Header: /u/gcmpack/MITgcm/pkg/ex3/ex3_send_rx2.template,v 1.3 2006/02/06 21:09:54 edhill Exp $ |
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C $Name: $ |
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|
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#include "EX3_OPTIONS.h" |
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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: EX3_SEND_RX2 |
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|
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C !INTERFACE: |
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SUBROUTINE EX3_SEND_RX2( |
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I bufftag, recvProc, |
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I along_i, |
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I prmat, |
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I il,ih,is, jl,jh,js, kl,kh,ks, |
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I io1,jo1,ko1, io2,jo2,ko2, |
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I idl1,idh1, jdl1,jdh1, kdl1,kdh1, |
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I array1, |
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I idl2,idh2, jdl2,jdh2, kdl2,kdh2, |
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I array2, |
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B buff, n_buff, msgID, |
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I commType, |
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I myThid ) |
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|
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C !DESCRIPTION: |
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C Vector exchange routine which copies values from two input arrays, |
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C performs a rotation/permutation of the values, writes the values |
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C to two buffers in the specified order and then, if necessary, |
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C calls the appropriate MPI send functions. |
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|
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C !USES: |
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IMPLICIT NONE |
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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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|
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C !INPUT PARAMETERS: |
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INTEGER bufftag, recvProc |
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LOGICAL along_i |
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INTEGER prmat(4) |
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INTEGER il,ih,is, jl,jh,js, kl,kh,ks |
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INTEGER io1,jo1,ko1, io2,jo2,ko2 |
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INTEGER idl1,idh1, jdl1,jdh1, kdl1,kdh1 |
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INTEGER idl2,idh2, jdl2,jdh2, kdl2,kdh2 |
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_RX array1( idl1:idh1, jdl1:jdh1, kdl1:kdh1 ) |
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_RX array2( idl2:idh2, jdl2:jdh2, kdl2:kdh2 ) |
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INTEGER n_buff |
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_RX buff( n_buff ) |
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INTEGER msgID(1) |
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CHARACTER commType |
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INTEGER myThid |
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CEOP |
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|
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C !LOCAL VARIABLES |
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INTEGER ii,jj,kk, ntb, nbv |
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#ifdef ALLOW_USE_MPI |
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INTEGER mpiid, mpirc |
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#endif |
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_RX prm(4), a1, a2 |
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character*(100) msgbuf |
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|
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C Setup the affine (permute & rotate) matrix as a real of the same |
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C precision |
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DO ii = 1,4 |
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prm(ii) = REAL(prmat(ii)) |
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ENDDO |
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|
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C Calculate buffer sizes |
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nbv = IABS((ih-il+1)/is) |
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& * IABS((jh-jl+1)/js) |
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& * IABS((kh-kl+1)/ks) |
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IF ( nbv*2 .GT. n_buff ) THEN |
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WRITE(msgbuf,'(2a)') 'EX3_SEND_RX2 ERROR: buffer too small', |
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& '--please increase EX3_BUFF_FAC in ''EX3_SIZE.h''' |
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CALL print_error(msgbuf, mythid) |
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WRITE(msgbuf,'(a,i9)') ' current buffer length = ', n_buff |
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CALL print_error(msgbuf, mythid) |
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WRITE(msgbuf,'(a,i9)') ' requested buffer length = ', nbv*2 |
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CALL print_error(msgbuf, mythid) |
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STOP 'ABNORMAL END: S/R EX3_SEND_RX2' |
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ENDIF |
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|
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|
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C Copy the values into the buffer in the specified order |
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ntb = 0 |
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DO kk = kl, kh, ks |
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IF ( along_i ) THEN |
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C Here, the "i" dimension cycles fastest and it "measures" the |
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C overlap width |
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DO jj = jl, jh, js |
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DO ii = il, ih, is |
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ntb = ntb + 1 |
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a1 = array1( ii+io1, jj+jo1, kk ) |
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a2 = array2( ii+io2, jj+jo2, kk ) |
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buff( ntb ) = prm(1)*a1 + prm(2)*a2 |
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buff( nbv+ntb ) = prm(3)*a1 + prm(4)*a2 |
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ENDDO |
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ENDDO |
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ELSE |
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C Here, the "j" dimension cycles fastest and it "measures" the |
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C overlap width |
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DO ii = il, ih, is |
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DO jj = jl, jh, js |
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ntb = ntb + 1 |
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a1 = array1( ii+io1, jj+jo1, kk ) |
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a2 = array2( ii+io2, jj+jo2, kk ) |
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buff( ntb ) = prm(1)*a1 + prm(2)*a2 |
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buff( nbv+ntb ) = prm(3)*a1 + prm(4)*a2 |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDDO |
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|
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IF ( commType .EQ. 'P' ) THEN |
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C We may eventually need (?) some sort of synchronization |
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C mechanism for multi-threaded mode |
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ELSEIF ( commType .EQ. 'M' ) THEN |
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#ifdef ALLOW_USE_MPI |
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nbv = nbv * 2 |
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CALL MPI_Isend( |
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I buff, nbv, EX3_MPI_TYPE_RX, recvProc, bufftag, |
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I MPI_COMM_MODEL, |
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O mpiid, mpirc ) |
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C Store MPI_Wait token in msgID. |
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msgID(1) = mpiid |
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#endif |
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ELSE |
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WRITE(msgbuf,'(3a)') 'EX3_SEND_RX2 ERROR: commType ''', |
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& commType, ''' is invalid' |
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CALL print_error(msgbuf, mythid) |
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STOP 'ABNORMAL END: S/R EX3_SEND_RX2' |
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ENDIF |
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|
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RETURN |
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END |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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CEH3 ;;; Local Variables: *** |
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CEH3 ;;; mode:fortran *** |
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CEH3 ;;; End: *** |
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