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C $Header: /u/u0/gcmpack/MITgcm_contrib/high_res_cube/code-mods/exch2_rl1_cube.F,v 1.2 2003/11/21 04:01:55 cnh Exp $ |
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C $Name: $ |
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#include "CPP_EEOPTIONS.h" |
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#undef Dbg |
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CBOP |
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C !ROUTINE: EXCH_RX_CUBE |
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C !INTERFACE: |
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SUBROUTINE EXCH2_RX1_CUBE( |
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U array, fieldCode, |
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I myOLw, myOLe, myOLn, myOLs, myNz, |
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I exchWidthX, exchWidthY, |
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I simulationMode, cornerMode, myThid ) |
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IMPLICIT NONE |
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C !DESCRIPTION: |
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C !USES: |
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C == Global data == |
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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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#include "W2_EXCH2_TOPOLOGY.h" |
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#include "W2_EXCH2_PARAMS.h" |
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C !INPUT/OUTPUT PARAMETERS: |
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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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C myOLe |
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C myOLn |
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C myOLs |
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C exchWidthX :: Width of data region exchanged in X. |
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C exchWidthY :: Width of data region exchanged in Y. |
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C myThid :: Thread number of this instance of S/R EXCH... |
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CHARACTER*2 fieldCode |
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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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INTEGER exchWidthX |
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INTEGER exchWidthY |
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INTEGER simulationMode |
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INTEGER cornerMode |
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INTEGER myThid |
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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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C !LOCAL VARIABLES: |
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C theSimulationMode :: Holds working copy of simulation mode |
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C theCornerMode :: Holds working copy of corner mode |
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C I,J,K,bl,bt,bn,bs :: Loop and index counters |
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C be,bw |
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INTEGER theSimulationMode |
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INTEGER theCornerMode |
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INTEGER I,J,K |
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INTEGER bl,bt,bn,bs,be,bw |
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C Variables for working through W2 topology |
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INTEGER thisTile, farTile, N, nN, oN |
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INTEGER tIlo, tIhi, tJlo, tJhi, tKlo, tKhi |
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INTEGER tIStride, tJStride, tKStride |
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INTEGER i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi |
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INTEGER bi1Lo, bi1Hi, bj1Lo, bj1Hi |
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C == Statement function == |
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C tilemod - Permutes indices to return neighboring tile index on |
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C six face cube. |
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INTEGER tilemod |
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C MPI stuff (should be in a routine call) |
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#ifdef ALLOW_USE_MPI |
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INTEGER mpiStatus(MPI_STATUS_SIZE) |
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#endif |
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INTEGER mpiRc |
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INTEGER wHandle |
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CEOP |
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theSimulationMode = simulationMode |
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theCornerMode = cornerMode |
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C For now tile<->tile exchanges are sequentialised through |
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C thread 1. This is a temporary feature for preliminary testing until |
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C general tile decomposistion is in place (CNH April 11, 2001) |
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CALL BAR2( myThid ) |
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C Post sends as messages or buffer copies |
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DO I=myBxLo(myThid), myBxHi(myThid) |
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thisTile=W2_myTileList(I) |
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nN=exch2_nNeighbours(thisTile) |
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DO N=1,nN |
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farTile=exch2_neighbourId(N,thisTile) |
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tIlo =exch2_itlo_c(N,thisTile) |
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tIhi =exch2_ithi_c(N,thisTile) |
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tJlo =exch2_jtlo_c(N,thisTile) |
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tJhi =exch2_jthi_c(N,thisTile) |
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CALL EXCH2_GET_SEND_BOUNDS( |
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I fieldCode, exchWidthX, |
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O tiStride, tjStride, |
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U tIlo, tiHi, tjLo, tjHi ) |
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tKLo=1 |
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tKHi=myNz |
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tKStride=1 |
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i1Lo = 1-myOLw |
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i1Hi = sNx+myOLe |
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j1Lo = 1-myOLs |
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j1Hi = sNy+myOLs |
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k1Lo = 1 |
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k1Hi = myNz |
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bi1Lo = I |
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bi1Hi = I |
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bj1Lo = 1 |
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bj1Hi = 1 |
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C Send to neighbour N to fill neighbor points |
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C (tIlo:tIhi:tiStride,tJlo:tJhi,tJStride,tKlo:tKhi,tKStride) |
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C in its copy of "array". |
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CALL EXCH2_SEND_RX1( |
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I tIlo, tIhi, tiStride, |
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I tJlo, tJhi, tjStride, |
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I tKlo, tKhi, tkStride, |
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I thisTile, N, |
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I e2Bufr1_RX(1,N,I,1), e2BufrRecSize, |
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I array(1-myOLw,1-myOLs,1,I,1), |
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I i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi, |
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O e2_msgHandles(1,N,I), |
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I W2_myCommFlag(N,I), |
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I myThid ) |
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ENDDO |
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ENDDO |
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C Receive messages or extract buffer copies |
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DO I=myBxLo(myThid), myBxHi(myThid) |
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thisTile=W2_myTileList(I) |
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nN=exch2_nNeighbours(thisTile) |
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DO N=1,nN |
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farTile=exch2_neighbourId(N,thisTile) |
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oN=exch2_opposingSend_Record(N,thisTile) |
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tIlo =exch2_itlo_c(oN,farTile) |
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tIhi =exch2_ithi_c(oN,farTile) |
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tJlo =exch2_jtlo_c(oN,farTile) |
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tJhi =exch2_jthi_c(oN,farTile) |
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CALL EXCH2_GET_RECV_BOUNDS( |
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I fieldCode, exchWidthX, |
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O tiStride, tjStride, |
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U tIlo, tiHi, tjLo, tjHi ) |
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tKLo=1 |
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tKHi=myNz |
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tKStride=1 |
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i1Lo = 1-myOLw |
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i1Hi = sNx+myOLe |
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j1Lo = 1-myOLs |
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j1Hi = sNy+myOLs |
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k1Lo = 1 |
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k1Hi = myNz |
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bi1Lo = I |
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bi1Hi = I |
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bj1Lo = 1 |
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bj1Hi = 1 |
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C Receive from neighbour N to fill my points |
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C (tIlo:tIhi:tiStride,tJlo:tJhi,tJStride,tKlo:tKhi,tKStride) |
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C in "array". |
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C Note: when transferring data within a process: |
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C o e2Bufr entry to read is entry associated with opposing send record |
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C o e2_msgHandle entry to read is entry associated with opposing send |
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C record. |
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CALL EXCH2_RECV_RX1( |
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I tIlo, tIhi, tiStride, |
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I tJlo, tJhi, tjStride, |
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I tKlo, tKhi, tkStride, |
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I thisTile, I, N, |
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I e2Bufr1_RX, e2BufrRecSize, |
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I MAX_NEIGHBOURS, nSx, |
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I array(1-myOLw,1-myOLs,1,I,1), |
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I i1Lo, i1Hi, j1Lo, j1Hi, k1Lo, k1Hi, |
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U e2_msgHandles, |
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I W2_myTileList, |
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I W2_myCommFlag(N,I), |
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I myThid ) |
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ENDDO |
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ENDDO |
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C Clear message handles/locks |
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DO I=1,nSx |
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thisTile=W2_myTileList(I) |
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nN=exch2_nNeighbours(thisTile) |
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DO N=1,nN |
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C Note: In a between process tile-tile data transport using |
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C MPI the sender needs to clear an Isend wait handle here. |
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C In a within process tile-tile data transport using true |
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C shared address space/or direct transfer through commonly |
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C addressable memory blocks the receiver needs to assert |
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C that is has consumed the buffer the sender filled here. |
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farTile=exch2_neighbourId(N,thisTile) |
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IF ( W2_myCommFlag(N,I) .EQ. 'M' ) THEN |
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#ifdef ALLOW_USE_MPI |
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wHandle = e2_msgHandles(1,N,I) |
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CALL MPI_Wait( wHandle, mpiStatus, mpiRc ) |
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#endif |
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ELSEIF ( W2_myCommFlag(N,I) .EQ. 'P' ) THEN |
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ELSE |
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ENDIF |
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ENDDO |
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ENDDO |
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CALL BAR2(myThid) |
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RETURN |
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END |
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C ---------------------------------------------------------------------- |
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