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C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_get_rx2.template,v 1.3 2010/04/23 20:21:06 jmc Exp $ |
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C $Name: $ |
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|
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#include "CPP_EEOPTIONS.h" |
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#include "W2_OPTIONS.h" |
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|
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CBOP 0 |
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C !ROUTINE: EXCH2_GET_RX2 |
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|
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C !INTERFACE: |
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SUBROUTINE EXCH2_GET_RX2 ( |
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I tIlo1, tIhi1, tIlo2, tIhi2, tiStride, |
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I tJlo1, tJhi1, tJlo2, tJhi2, tjStride, |
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I tKlo, tKhi, tkStride, |
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I thisTile, nN, bi, bj, |
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I e2BufrRecSize, sizeNb, sizeBi, sizeBj, |
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I e2Bufr1_RX, e2Bufr2_RX, |
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U array1, |
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U array2, |
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I i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi, |
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I i2Lo, i2Hi, j2Lo, j2Hi, k2Lo, k2Hi, |
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U e2_msgHandles, |
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I commSetting, myThid ) |
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|
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C !DESCRIPTION: |
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C Two components vector field Exchange: |
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C Get from buffer exchanged data to fill in this tile-egde overlap region. |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "W2_EXCH2_SIZE.h" |
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#include "W2_EXCH2_TOPOLOGY.h" |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C === Routine arguments === |
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C tIlo1, tIhi1 :: index range in I that will be filled in target "array1" |
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C tIlo2, tIhi2 :: index range in I that will be filled in target "array2" |
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C tIstride :: index step in I that will be filled in target arrays |
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C tJlo1, tJhi1 :: index range in J that will be filled in target "array1" |
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C tJlo2, tJhi2 :: index range in J that will be filled in target "array2" |
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C tJstride :: index step in J that will be filled in target arrays |
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C tKlo, tKhi :: index range in K that will be filled in target arrays |
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C tKstride :: index step in K that will be filled in target arrays |
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C oIs1, oJs1 :: I,J index offset in target "array1" to source connection |
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C oIs2, oJs2 :: I,J index offset in target "array2" to source connection |
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C thisTile :: receiving tile Id. number |
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C nN :: Neighbour entry that we are processing |
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C bi,bj :: Indices of the receiving tile within this process |
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C :: (used to select buffer slots that are allowed). |
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C e2BufrRecSize :: Number of elements in each entry of e2Bufr[1,2]_RX |
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C sizeNb :: Second dimension of e2Bufr1_RX & e2Bufr2_RX |
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C sizeBi :: Third dimension of e2Bufr1_RX & e2Bufr2_RX |
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C sizeBj :: Fourth dimension of e2Bufr1_RX & e2Bufr2_RX |
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C e2Bufr1_RX :: Data transport buffer array. This array is used in one of |
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C e2Bufr2_RX :: two ways. For PUT communication the entry in the buffer |
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C :: associated with the source for this receive (determined |
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C :: from the opposing_send index) is read. |
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C :: For MSG communication the entry in the buffer associated |
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C :: with this neighbor of this tile is used as a receive |
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C :: location for loading a linear stream of bytes. |
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C array1 :: 1rst Component target array that this receive writes to. |
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C array2 :: 2nd Component target array that this receive writes to. |
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C i1Lo, i1Hi :: I coordinate bounds of target array1 |
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C j1Lo, j1Hi :: J coordinate bounds of target array1 |
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C k1Lo, k1Hi :: K coordinate bounds of target array1 |
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C i2Lo, i2Hi :: I coordinate bounds of target array2 |
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C j2Lo, j2Hi :: J coordinate bounds of target array2 |
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C k2Lo, k2Hi :: K coordinate bounds of target array2 |
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C e2_msgHandles :: Synchronization and coordination data structure used to |
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C :: coordinate access to e2Bufr1_RX or to regulate message |
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C :: buffering. In PUT communication sender will increment |
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C :: handle entry once data is ready in buffer. Receiver will |
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C :: decrement handle once data is consumed from buffer. |
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C :: For MPI MSG communication MPI_Wait uses handle to check |
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C :: Isend has cleared. This is done in routine after receives. |
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C commSetting :: Mode of communication used to exchange with this neighbor |
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C withSigns :: Flag controlling whether vector field is signed. |
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C myThid :: my Thread Id. number |
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|
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INTEGER tIlo1, tIhi1, tIlo2, tIhi2, tiStride |
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INTEGER tJlo1, tJhi1, tJlo2, tJhi2, tjStride |
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INTEGER tKlo, tKhi, tkStride |
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INTEGER i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi |
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INTEGER i2Lo, i2Hi, j2Lo, j2Hi, k2Lo, k2Hi |
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INTEGER thisTile, nN, bi, bj |
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INTEGER e2BufrRecSize, sizeNb, sizeBi, sizeBj |
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_RX e2Bufr1_RX( e2BufrRecSize, sizeNb, sizeBi, sizeBj, 2 ) |
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_RX e2Bufr2_RX( e2BufrRecSize, sizeNb, sizeBi, sizeBj, 2 ) |
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_RX array1(i1Lo:i1Hi,j1Lo:j1Hi,k1Lo:k1Hi) |
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_RX array2(i2Lo:i2Hi,j2Lo:j2Hi,k2Lo:k2Hi) |
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INTEGER e2_msgHandles( 2, sizeNb, sizeBi, sizeBj ) |
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CHARACTER commSetting |
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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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C == Local variables == |
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C itl,jtl,ktl :: Loop counters (this tile) |
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C soT :: Source tile Id number |
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C oNb :: Opposing send record number |
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C iBufr1 :: number of buffer-1 elements to transfer |
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C iBufr2 :: number of buffer-2 elements to transfer |
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C sNb :: buffer(source) Neighbour index to get data from |
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C sBi :: buffer(source) local(to this Proc) Tile index to get data from |
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C sBj :: buffer(source) local(to this Proc) Tile index to get data from |
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C sLv :: buffer(source) level index to get data from |
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C i,j :: Loop counters |
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|
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INTEGER itl, jtl, ktl |
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INTEGER soT |
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INTEGER oNb |
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INTEGER iBufr1, iBufr2 |
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INTEGER sNb, sBi, sBj, sLv |
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c CHARACTER*(MAX_LEN_MBUF) msgBuf |
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|
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soT = exch2_neighbourId( nN, thisTile ) |
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oNb = exch2_opposingSend(nN, thisTile ) |
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|
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C Handle receive end data transport according to communication mechanism between |
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C source and target tile |
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IF ( commSetting .EQ. 'P' ) THEN |
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C 1 Need to check and spin on data ready assertion for multithreaded mode, |
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C for now, ensure global sync using barrier. |
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C 2 get directly data from 1rst level buffer (sLv=1); |
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|
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C find the tile indices (local to this Proc) corresponding to |
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C this source tile Id "soT" (note: this is saved in W2_tileIndex array) |
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sLv = 1 |
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sNb = oNb |
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sBi = W2_tileIndex(soT) |
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sBj = 1 + (sBi-1)/sizeBi |
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sBi = 1 + MOD(sBi-1,sizeBi) |
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#ifdef ALLOW_USE_MPI |
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ELSEIF ( commSetting .EQ. 'M' ) THEN |
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sLv = 2 |
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sBi = bi |
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sBj = bj |
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sNb = nN |
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#endif /* ALLOW_USE_MPI */ |
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ELSE |
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STOP 'EXCH2_GET_RX2:: commSetting VALUE IS INVALID' |
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ENDIF |
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iBufr1=0 |
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DO ktl=tKlo,tKhi,tkStride |
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DO jtl=tJLo1, tJHi1, tjStride |
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DO itl=tILo1, tIHi1, tiStride |
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C Read from e2Bufr1_RX(iBufr,sNb,sBi,sBj,sLv) |
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iBufr1 = iBufr1+1 |
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array1(itl,jtl,ktl) = e2Bufr1_RX(iBufr1,sNb,sBi,sBj,sLv) |
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ENDDO |
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ENDDO |
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ENDDO |
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iBufr2=0 |
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DO ktl=tKlo,tKhi,tkStride |
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DO jtl=tJLo2, tJHi2, tjStride |
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DO itl=tILo2, tIHi2, tiStride |
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C Read from e2Bufr2_RX(iBufr,sNb,sBi,sBj,sLv) |
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iBufr2 = iBufr2+1 |
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array2(itl,jtl,ktl) = e2Bufr2_RX(iBufr2,sNb,sBi,sBj,sLv) |
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ENDDO |
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ENDDO |
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ENDDO |
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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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