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C $Header: /u/gcmpack/MITgcm/pkg/exch2/exch2_recv_rx2.template,v 1.5 2008/07/29 20:25:23 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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SUBROUTINE EXCH2_RECV_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, thisI, nN, |
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I e2Bufr1_RX, e2Bufr2_RX, e2BufrRecSize, |
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I mnb, nt, |
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U array1, |
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I i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi, |
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U array2, |
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I i2Lo, i2Hi, j2Lo, j2Hi, k2Lo, k2Hi, |
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U e2_msgHandles, myTiles, |
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I commSetting, |
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I myThid ) |
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|
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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 "EESUPPORT.h" |
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#include "W2_EXCH2_TOPOLOGY.h" |
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|
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C === Routine arguments === |
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C tIlo1,tIhi1,tIstride :: index range in I that will be filled in target "array1" |
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C tIlo2,tIhi2,tIstride :: index range in I that will be filled in target "array2" |
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C tJlo1,tJhi1,tJstride :: index range in J that will be filled in target "array1" |
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C tJlo2,tJhi2,tJstride :: index range in J that will be filled in target "array2" |
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C tKlo, tKhi, tKstride :: index range in K that will be filled in target arrays |
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C thisTile :: Rank of the receiveing tile |
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C thisI :: Index of the receiving tile within this process (used |
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C :: to select buffer slots that are allowed). |
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C nN :: Neighbour entry that we are processing |
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C e2Bufr1_RX :: Data transport buffer array. This array is used in one of |
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C :: 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. For MSG communication |
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C :: the entry in the buffer associated with this neighbor of this |
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C :: tile is used as a receive location for loading a linear |
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C :: stream of bytes. |
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C e2BufrRecSize :: Number of elements in each entry of e2Bufr1_RX |
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C mnb :: Second dimension of e2Bufr1_RX |
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C nt :: Third dimension of e2Bufr1_RX |
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C array :: Target array that this receive writes to. |
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C i1Lo, i1Hi :: I coordinate bounds of target array |
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C j1Lo, j1Hi :: J coordinate bounds of target array |
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C k1Lo, k1Hi :: K coordinate bounds of target array |
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C e2_msgHandles :: Synchronization and coordination data structure used to coordinate access |
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C :: to e2Bufr1_RX or to regulate message buffering. In PUT communication |
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C :: sender will increment handle entry once data is ready in buffer. |
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C :: Receiver will decrement handle once data is consumed from buffer. For |
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C :: MPI MSG communication MPI_Wait uses hanlde to check Isend has cleared. |
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C :: This is done in routine after receives. |
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C myTiles :: List of nt tiles that this process owns. |
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C commSetting :: Mode of communication used to exchnage with this neighbor |
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C myThid :: Thread number of this instance of EXCH2_RECV_RX2 |
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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, thisI |
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INTEGER e2BufrRecSize |
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INTEGER mnb, nt |
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_RX e2Bufr1_RX( e2BufrRecSize, mnb, nt, 2 ) |
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_RX e2Bufr2_RX( e2BufrRecSize, mnb, nt, 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, mnb, nt) |
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INTEGER myThid |
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INTEGER myTiles(nt) |
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CHARACTER commSetting |
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|
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C == Local variables == |
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C itl, jtl, ktl :: Loop counters |
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C :: itl etc... target local |
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INTEGER itl, jtl, ktl |
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C tt :: Target tile |
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C iBufr1 :: Buffer counter |
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C iBufr2 :: |
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INTEGER tt |
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INTEGER iBufr1, iBufr2 |
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C mb, nb :: Selects e2Bufr, msgHandle record to use |
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C ir :: |
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INTEGER mb, nb, ir |
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C oN :: Opposing send record number |
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INTEGER oN |
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C Loop counters |
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INTEGER I |
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|
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C MPI setup |
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#ifdef ALLOW_USE_MPI |
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INTEGER nri1, nrj1, nrk1 |
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INTEGER nri2, nrj2, nrk2 |
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INTEGER theTag1, theTag2, theType |
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INTEGER sProc, tProc |
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INTEGER mpiStatus(MPI_STATUS_SIZE), mpiRc |
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#ifdef W2_E2_DEBUG_ON |
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CHARACTER*(MAX_LEN_MBUF) messageBuffer |
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#endif |
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#endif |
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|
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tt=exch2_neighbourId(nN, thisTile ) |
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oN=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, for now do nothing i.e. |
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C assume only one thread per process. |
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|
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C 2 Need to set e2Bufr to use put buffer from opposing send. |
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oN = exch2_opposingSend(nN, thisTile ) |
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mb = oN |
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ir = 1 |
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DO I=1,nt |
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IF ( myTiles(I) .EQ. tt ) THEN |
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nb = I |
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ENDIF |
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ENDDO |
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C Get data from e2Bufr(1,mb,nb) |
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ELSEIF ( commSetting .EQ. 'M' ) THEN |
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#ifdef ALLOW_USE_MPI |
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C Setup MPI stuff here |
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nb = thisI |
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mb = nN |
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ir = 2 |
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theTag1 = (tt-1)*MAX_NEIGHBOURS*2 + oN-1 |
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& + 10000*( |
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& (thisTile-1)*MAX_NEIGHBOURS*2 + oN-1 |
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& ) |
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theTag2 = (tt-1)*MAX_NEIGHBOURS*2 + MAX_NEIGHBOURS + oN-1 |
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& + 10000*( |
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& (thisTile-1)*MAX_NEIGHBOURS*2 + MAX_NEIGHBOURS + oN-1 |
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& ) |
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tProc = exch2_tProc(thisTile)-1 |
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sProc = exch2_tProc(tt)-1 |
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theType = MPI_REAL8 |
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nri1 = (tIhi1-tIlo1+1)/tiStride |
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nrj1 = (tJhi1-tJlo1+1)/tjStride |
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nrk1 = (tKhi-tKlo+1)/tkStride |
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iBufr1 = nri1*nrj1*nrk1 |
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nri2 = (tIhi2-tIlo2+1)/tiStride |
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nrj2 = (tJhi2-tJlo2+1)/tjStride |
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nrk2 = (tKhi-tKlo+1)/tkStride |
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iBufr2 = nri2*nrj2*nrk2 |
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CALL MPI_Recv( e2Bufr1_RX(1,mb,nb,ir), iBufr1, theType, sProc, |
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& theTag1, MPI_COMM_MODEL, mpiStatus, mpiRc ) |
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CALL MPI_Recv( e2Bufr2_RX(1,mb,nb,ir), iBufr2, theType, sProc, |
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& theTag2, MPI_COMM_MODEL, mpiStatus, mpiRc ) |
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#ifdef W2_E2_DEBUG_ON |
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WRITE(messageBuffer,'(A,I4,A,I4,A)') ' RECV FROM TILE=', tt, |
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& ' (proc = ',sProc,')' |
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CALL PRINT_MESSAGE(messageBuffer, |
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I standardMessageUnit,SQUEEZE_RIGHT, |
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I myThid) |
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WRITE(messageBuffer,'(A,I4,A,I4,A)') ' INTO TILE=',thisTile, |
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& ' (proc = ',tProc,')' |
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CALL PRINT_MESSAGE(messageBuffer, |
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I standardMessageUnit,SQUEEZE_RIGHT, |
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I myThid) |
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WRITE(messageBuffer,'(A,I10)') ' TAG1=', theTag1 |
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CALL PRINT_MESSAGE(messageBuffer, |
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I standardMessageUnit,SQUEEZE_RIGHT, |
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I myThid) |
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WRITE(messageBuffer,'(A,I4)') ' NEL1=', iBufr1 |
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CALL PRINT_MESSAGE(messageBuffer, |
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I standardMessageUnit,SQUEEZE_RIGHT, |
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I myThid) |
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WRITE(messageBuffer,'(A,I10)') ' TAG2=', theTag2 |
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CALL PRINT_MESSAGE(messageBuffer, |
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I standardMessageUnit,SQUEEZE_RIGHT, |
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I myThid) |
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WRITE(messageBuffer,'(A,I4)') ' NEL2=', iBufr2 |
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CALL PRINT_MESSAGE(messageBuffer, |
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I standardMessageUnit,SQUEEZE_RIGHT, |
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I myThid) |
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#endif /* W2_E2_DEBUG_ON */ |
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C Set mb to neighbour entry |
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C Set nt to this tiles rank |
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mb = nN |
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#endif |
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ELSE |
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STOP 'EXCH2_RECV_RX2:: commSetting VALUE IS INVALID' |
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ENDIF |
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|
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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,mb,nb) |
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iBufr1=iBufr1+1 |
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array1(itl,jtl,ktl)=e2Bufr1_RX(iBufr1,mb,nb,ir) |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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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 e2Bufr1_RX(iBufr,mb,nb) |
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iBufr2=iBufr2+1 |
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array2(itl,jtl,ktl)=e2Bufr2_RX(iBufr2,mb,nb,ir) |
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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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