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C $Header: /u/gcmpack/MITgcm/pkg/exch2/w2_eeboot.F,v 1.12 2009/06/28 01:00:23 jmc Exp $ |
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C $Name: $ |
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|
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#include "CPP_EEOPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: W2_EEBOOT |
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|
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C !INTERFACE: |
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SUBROUTINE W2_EEBOOT |
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|
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C !DESCRIPTION: |
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C *==========================================================* |
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C | SUBROUTINE W2_EEBOOT |
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C | o Setup execution "environment" for WRAPPER2 |
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C *==========================================================* |
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C | WRAPPER2 provides complex topology support. In this routine |
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C | we setup the base topology for the default halo operations. |
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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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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "EESUPPORT.h" |
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#include "W2_EXCH2_SIZE.h" |
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#include "W2_EXCH2_TOPOLOGY.h" |
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#include "W2_EXCH2_PARAMS.h" |
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#include "W2_EXCH2_BUFFER.h" |
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CEOP |
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|
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C !FUNCTIONS: |
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INTEGER ILNBLNK |
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EXTERNAL ILNBLNK |
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|
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C == Local variables == |
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INTEGER thisProc |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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CHARACTER*(MAX_LEN_FNAM) fName |
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c INTEGER W2_oUnit |
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INTEGER stdUnit, iLen |
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CHARACTER commFlag |
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INTEGER myTileId |
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INTEGER myThid, I, J |
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INTEGER np, ii, jj, bi, bj |
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INTEGER iErr, tNx, tNy |
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|
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C Set dummy myThid value (we are not multi-threaded here) |
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myThid = 1 |
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|
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C Initialise to zero EXCH2_TOPOLOGY common blocks |
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DO I = 1,W2_maxNbTiles |
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exch2_tNx(I) = 0 |
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exch2_tNy(I) = 0 |
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exch2_tBasex(I) = 0 |
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exch2_tBasey(I) = 0 |
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exch2_txGlobalo(I) = 0 |
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exch2_tyGlobalo(I) = 0 |
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exch2_isWedge(I) = 0 |
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exch2_isNedge(I) = 0 |
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exch2_isEedge(I) = 0 |
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exch2_isSedge(I) = 0 |
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exch2_tProc(I) = 0 |
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exch2_myFace(I) = 0 |
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exch2_mydNx(I) = 0 |
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exch2_mydNy(I) = 0 |
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exch2_nNeighbours(I) = 0 |
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DO J = 1,W2_maxNeighbours |
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exch2_neighbourId(J,I) = 0 |
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exch2_opposingSend(J,I) = 0 |
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DO ii = 1,4 |
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exch2_pij(ii,J,I) = 0 |
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ENDDO |
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exch2_oi(J,I) = 0 |
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exch2_oj(J,I) = 0 |
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exch2_iLo(J,I) = 0 |
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exch2_iHi(J,I) = 0 |
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exch2_jLo(J,I) = 0 |
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exch2_jHi(J,I) = 0 |
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ENDDO |
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ENDDO |
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W2_oUnit = standardMessageUnit |
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|
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C Set W2-EXCH2 parameters |
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CALL W2_READPARMS( myThid ) |
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|
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stdUnit = standardMessageUnit |
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WRITE(msgBuf,'(A)') '===== Start setting W2 TOPOLOGY:' |
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CALL PRINT_MESSAGE( msgBuf, stdUnit, SQUEEZE_RIGHT, myThid ) |
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|
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C Open message output-file (if needed) |
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IF ( W2_printMsg .LT. 0 ) THEN |
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WRITE(fName,'(A,I4.4,A)') |
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& 'w2_tile_topology.',myProcId,'.log' |
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iLen = ILNBLNK(fName) |
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CALL MDSFINDUNIT( W2_oUnit, myThid ) |
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OPEN( W2_oUnit, file=fName(1:iLen), |
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& status='unknown', form='formatted') |
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WRITE(msgBuf,'(2A)') ' write to log-file: ', fName(1:iLen) |
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CALL PRINT_MESSAGE( msgBuf, stdUnit, SQUEEZE_RIGHT, myThid ) |
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ENDIF |
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|
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C Define topology for every tile |
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CALL W2_E2SETUP( myThid ) |
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|
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C Decide which tiles this process handles - do this inline for now, but |
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C should go in subroutine. |
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C Set which rank processes "own" which tiles. This should probably |
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C be queried as part of some hand-shaking but for now we use the |
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C functional relationship that was used above. |
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C Fill also W2_procTileList for Single-CPU-IO. |
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|
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C Number of tiles I handle is nSx*nSy |
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thisProc = 1 |
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#ifdef ALLOW_USE_MPI |
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thisProc = 1+myPid |
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#endif |
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J = 0 |
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DO I=1,nTiles |
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IF ( exch2_myFace(I) .NE. 0 ) THEN |
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C-- old ordering (makes no difference if nSy*nPy=1 ) |
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c np = 1 + J/(nSx*nSy) |
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c jj = MOD(J,nSx*nSy) |
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c bj = 1 + jj/nSx |
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c bi = 1 + MOD(jj,nSx) |
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C-- new ordering: for single sub-domain (nFacets=1) case, match default setting |
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jj = J/(nSx*nPx) |
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ii = MOD(J,nSx*nPx) |
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C-- natural way to order processors: |
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c np = 1 + ii/nSx + (jj/nSy)*nPx |
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C-- switch processor order to match MPI_CART set-up |
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np = 1 + jj/nSy + (ii/nSx)*nPy |
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bj = 1 + MOD(jj,nSy) |
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bi = 1 + MOD(ii,nSx) |
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C-- |
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exch2_tProc(I) = np |
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W2_procTileList(bi,bj,np) = I |
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IF ( np.EQ.thisProc ) W2_myTileList(bi,bj) = I |
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J = J + 1 |
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ENDIF |
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ENDDO |
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IF ( J .NE. nSx*nSy*nPx*nPy ) THEN |
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STOP |
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& 'ERROR W2_EEBOOT: number of active tiles is not nPx*nSx*nPy*nSy' |
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ENDIF |
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|
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C-- Check tile sizes |
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iErr = 0 |
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DO bj=1,nSy |
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DO bi=1,nSx |
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myTileId = W2_myTileList(bi,bj) |
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tNx = exch2_tNx(myTileId) |
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tNy = exch2_tNy(myTileId) |
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IF ( tNx .NE. sNx ) THEN |
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WRITE(msgBuf,'(3(A,I5))') |
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& 'ERROR: S/R W2_EEBOOT Topology for tile', myTileId, |
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& 'tNx=', tNx, ' is not equal to subgrid size sNx=', sNx |
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CALL PRINT_MESSAGE(msgBuf, |
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& errorMessageUnit, SQUEEZE_RIGHT, 1 ) |
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iErr = iErr+1 |
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ENDIF |
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IF ( tNy .NE. sNy ) THEN |
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WRITE(msgBuf,'(3(A,I5))') |
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& 'ERROR: S/R W2_EEBOOT Topology for tile', myTileId, |
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& 'tNy=', tNy, ' is not equal to subgrid size sNy=', sNy |
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CALL PRINT_MESSAGE(msgBuf, |
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& errorMessageUnit, SQUEEZE_RIGHT, 1 ) |
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iErr = iErr+1 |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( iErr .NE. 0 ) THEN |
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STOP 'ABNORMAL END: W2_EEBOOT' |
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ENDIF |
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|
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C-- Print tiles connection for this process and set myCommonFlag : |
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WRITE(msgBuf,'(A)') '===== W2 TILE TOPOLOGY =====' |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_BOTH, myThid ) |
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DO bj=1,nSy |
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DO bi=1,nSx |
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myTileId = W2_myTileList(bi,bj) |
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c WRITE(msgBuf,'(A,I4)') ' TILE: ', myTileId |
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WRITE(msgBuf,'(A,I5,A,I3)') ' TILE: ', myTileId, |
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& ' , Nb of Neighbours =', exch2_nNeighbours(myTileId) |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
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DO J=1,exch2_nNeighbours(myTileId) |
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commFlag = 'M' |
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DO jj=1,nSy |
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DO ii=1,nSx |
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IF ( W2_myTileList(ii,jj).EQ.exch2_neighbourId(J,myTileId) ) |
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& commFlag = 'P' |
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ENDDO |
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ENDDO |
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IF ( commFlag .EQ. 'M' ) THEN |
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WRITE(msgBuf,'(A,I3,A,I5,A,I3,2A,I5,A)') |
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& ' NEIGHBOUR',J,' = TILE', exch2_neighbourId(J,myTileId), |
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& ' (n=', exch2_opposingSend(J,myTileId), ') Comm = MSG', |
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& ' (PROC=',exch2_tProc(exch2_neighbourId(J,myTileId)),')' |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
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ENDIF |
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IF ( commFlag .EQ. 'P' ) THEN |
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WRITE(msgBuf,'(A,I3,A,I5,A,I3,2A,I5,A)') |
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& ' NEIGHBOUR',J,' = TILE', exch2_neighbourId(J,myTileId), |
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& ' (n=', exch2_opposingSend(J,myTileId), ') Comm = PUT', |
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& ' (PROC=',exch2_tProc(exch2_neighbourId(J,myTileId)),')' |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
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ENDIF |
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W2_myCommFlag(J,bi,bj) = commFlag |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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C Set filling value for face-corner halo regions |
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e2FillValue_RL = 0. _d 0 |
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e2FillValue_RS = 0. _d 0 |
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e2FillValue_R4 = 0.e0 |
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e2FillValue_R8 = 0.d0 |
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C- for testing only: put a large value (should not affects the results) |
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c e2FillValue_RL = 1. _d+20 |
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c e2FillValue_RS = 1. _d+20 |
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c e2FillValue_R4 = 1.e+20 |
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c e2FillValue_R8 = 1.d+20 |
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|
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C Print out the topology communication schedule |
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IF ( W2_printMsg .NE. 0 ) THEN |
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CALL W2_PRINT_COMM_SEQUENCE( myThid ) |
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ENDIF |
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|
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C Close message output-file (if needed) |
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IF ( W2_oUnit.NE.standardMessageUnit ) THEN |
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WRITE(msgBuf,'(A)') '=== End TOPOLOGY report ===' |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_BOTH, myThid ) |
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CLOSE( W2_oUnit ) |
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ENDIF |
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WRITE(msgBuf,'(A)') '===== setting W2 TOPOLOGY: Done' |
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CALL PRINT_MESSAGE( msgBuf, stdUnit, SQUEEZE_RIGHT, myThid ) |
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WRITE(msgBuf,'(A)') ' ' |
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CALL PRINT_MESSAGE( msgBuf, stdUnit, SQUEEZE_RIGHT, myThid ) |
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|
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RETURN |
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END |
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