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jmc |
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C $Header: /u/gcmpack/MITgcm/pkg/exch2/w2_e2setup.F,v 1.3 2008/07/29 20:25:23 jmc Exp $ |
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C $Name: $ |
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#include "CPP_EEOPTIONS.h" |
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#include "W2_OPTIONS.h" |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CBOP 0 |
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C !ROUTINE: W2_SET_MAP_TILES |
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C !INTERFACE: |
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SUBROUTINE W2_SET_MAP_TILES( myThid ) |
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C !DESCRIPTION: |
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C Set-up tiles mapping and IO global mapping |
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C !USES: |
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IMPLICIT NONE |
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C Tile toplogy settings data structures |
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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_PARAMS.h" |
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#include "W2_EXCH2_TOPOLOGY.h" |
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C !INPUT PARAMETERS: |
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C myThid :: my Thread Id number |
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C (Note: not relevant since threading has not yet started) |
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INTEGER myThid |
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C !FUNCTIONS: |
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INTEGER FIND_GCD_N |
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EXTERNAL FIND_GCD_N |
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C !LOCAL VARIABLES: |
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C === Local variables === |
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C msgBuf :: Informational/error meesage buffer |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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INTEGER tNx, tNy, fNx, fNy, nbPts, fBaseX |
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INTEGER nbTx, nbTy |
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INTEGER j, ii, k, tId, tx, ty |
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INTEGER divise, nnx(W2_maxNbFacets) |
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INTEGER errCnt, tCnt |
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LOGICAL tileIsActive, flag, prtFlag |
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CEOP |
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C Set-up tiles mapping and IO global mapping |
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WRITE(msgBuf,'(2A)') 'W2_SET_MAP_TILES:', |
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& ' tile mapping within facet and global Map:' |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
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prtFlag = ABS(W2_printMsg).GE.2 |
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& .OR. ( W2_printMsg .NE.0 .AND. myProcId.EQ.0 ) |
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tNx = sNx |
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tNy = sNy |
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C-- Check that tile dims divise facet dims |
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errCnt = 0 |
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tCnt = 0 |
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nbPts = 0 |
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DO j=1,nFacets |
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fNx = facet_dims(2*j-1) |
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fNy = facet_dims( 2*j ) |
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nbTx = fNx/tNx |
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nbTy = fNy/tNy |
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IF ( nbTx*tNx .NE. fNx ) THEN |
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WRITE(msgBuf,'(A,I3,2(A,I7))') 'Facet',j, |
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& ' : X-size=', fNx, ' not multiple of sNx=', tNx |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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errCnt = errCnt + 1 |
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ENDIF |
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IF ( nbTy*tNy .NE. fNy ) THEN |
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WRITE(msgBuf,'(A,I3,2(A,I7))') 'Facet',j, |
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& ' : Y-size=', fNy, ' not multiple of sNy=', tNy |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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errCnt = errCnt + 1 |
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ENDIF |
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facet_owns(1,j) = tCnt+1 |
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tCnt = tCnt + nbTx*nbTy |
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facet_owns(2,j) = tCnt |
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nbPts = nbPts + fNx*fNy |
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ENDDO |
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IF ( errCnt.GT.0 ) THEN |
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WRITE(msgBuf,'(A,I3,A)') |
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& ' W2_SET_MAP_TILES: found', errCnt, ' Fatal errors' |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R W2_SET_MAP_TILES' |
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ENDIF |
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C-- Check that domain size and (SIZE.h + blankList) match: |
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IF ( tCnt.NE.nTiles ) THEN |
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WRITE(msgBuf,'(A,I6,A)') |
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& 'W2_SET_MAP_TILES: Domain Total # of tiles =', tCnt, ' does' |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE(msgBuf,'(A,I6)') |
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& 'W2_SET_MAP_TILES: not match (SIZE.h+blankList)=', nTiles |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R W2_SET_MAP_TILES' |
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ENDIF |
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IF ( W2_mapIO.EQ.1 ) THEN |
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C-- Compact IO map (mostly in Y dir): search for Greatest Common Divisor |
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C of all x-size (faster to apply GCD to Nb of Tiles in X): |
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DO j=1,nFacets |
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nnx(j) = facet_dims(2*j-1)/tNx |
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ENDDO |
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divise = FIND_GCD_N( nnx, nFacets) |
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W2_mapIO = divise*tNx |
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WRITE(msgBuf,'(A,2(I5,A))') ' W2_mapIO =', W2_mapIO, |
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& ' (=', divise, '*sNx)' |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
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ENDIF |
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C-- Global Map size: |
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IF ( W2_mapIO.EQ.-1 ) THEN |
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exch2_global_Nx = 0 |
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exch2_global_Ny = 0 |
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DO j=1,nFacets |
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exch2_global_Nx = exch2_global_Nx + facet_dims(2*j-1) |
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exch2_global_Ny = MAX( exch2_global_Ny, facet_dims(2*j) ) |
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ENDDO |
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ELSEIF ( W2_mapIO.EQ.0 ) THEN |
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exch2_global_Nx = nbPts |
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exch2_global_Ny = 1 |
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ELSE |
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exch2_global_Nx = W2_mapIO |
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exch2_global_Ny = nbPts/W2_mapIO |
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ENDIF |
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WRITE(msgBuf,'(A,2(A,I8))') ' Global Map (IO):', |
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& ' X-size=', exch2_global_Nx, ' , Y-size=', exch2_global_Ny |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
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C-- Set tiles mapping within facet (sub-domain) and within Global Map |
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WRITE(msgBuf,'(2A)') 'W2_SET_MAP_TILES:', |
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& ' tile offset within facet and global Map:' |
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CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
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tId = 0 |
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nbPts = 0 |
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fBaseX = 0 |
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DO j=1,nFacets |
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fNx = facet_dims(2*j-1) |
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fNy = facet_dims( 2*j ) |
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nbTx = fNx/tNx |
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nbTy = fNy/tNy |
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WRITE(W2_oUnit,'(A,I3,2(A,I6),A,I5,2(A,I4),A)') |
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& '- facet', j, ' : X-size=', fNx, ' , Y-size=', fNy, |
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& ' ;', nbTx*nbTy, ' tiles (Tx,Ty=', nbTx,',',nbTy,')' |
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c CALL PRINT_MESSAGE( msgBuf, W2_oUnit, SQUEEZE_RIGHT, myThid ) |
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DO ty=1,nbTy |
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DO tx=1,nbTx |
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tId = tId + 1 |
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C-- Tags blank tile by removing facet # (exch2_myFace) but keeps its location |
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tileIsActive = .TRUE. |
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DO k=1,nBlankTiles |
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IF ( blankList(k).EQ.tId ) tileIsActive = .FALSE. |
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ENDDO |
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IF ( tileIsActive ) exch2_myFace(tId) = j |
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exch2_mydNx ( tId ) = fNx |
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exch2_mydNy ( tId ) = fNy |
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exch2_tNx ( tId ) = tNx |
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exch2_tNy ( tId ) = tNy |
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exch2_tBasex( tId ) = (tx-1)*tNx |
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exch2_tBasey( tId ) = (ty-1)*tNy |
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C-- Global IO Mapping |
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IF ( W2_mapIO.EQ.-1 ) THEN |
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C- Old format |
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exch2_txGlobalo( tId ) = 1 + exch2_tBasex(tId) + fBaseX |
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exch2_tyGlobalo( tId ) = 1 + exch2_tBasey(tId) |
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ELSEIF ( W2_mapIO.EQ.0 ) THEN |
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C- Compact format = 1 long line |
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ii = nbPts + exch2_tBasex(tId) + exch2_tBasey(tId)*fNx |
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exch2_txGlobalo( tId ) = 1 + ii |
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exch2_tyGlobalo( tId ) = 1 |
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ELSE |
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C Compact format: piled in the Y direction |
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ii = nbPts + exch2_tBasex(tId) + exch2_tBasey(tId)*fNx |
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exch2_txGlobalo( tId ) = 1 + MOD(ii,W2_mapIO) |
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exch2_tyGlobalo( tId ) = 1 + ii/W2_mapIO |
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ENDIF |
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IF ( prtFlag ) |
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& WRITE(W2_oUnit,'(A,I5,3(A,I3),2A,2I5,2A,2I8)') ' tile',tId, |
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& ' on facet', exch2_myFace(tId),' (',tx,',',ty,'):', |
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& ' offset=', exch2_tBasex(tId), exch2_tBasey(tId),' ;', |
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& ' on Glob.Map=', exch2_txGlobalo(tId),exch2_tyGlobalo(tId) |
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ENDDO |
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ENDDO |
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fBaseX = fBaseX + fNx |
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nbPts = nbPts + fNx*fNy |
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ENDDO |
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RETURN |
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END |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CBOP |
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C !ROUTINE: FIND_GCD_N |
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C !INTERFACE: |
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INTEGER FUNCTION FIND_GCD_N( fldList, nFld ) |
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C !DESCRIPTION: |
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C *==========================================================* |
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C | FUNCTION FIND_GCD_N |
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C | o Find the Greatest Common Divisor of N integers |
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C *==========================================================* |
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C !USES: |
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IMPLICIT NONE |
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C !INPUT PARAMETERS: |
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C fldList :: list of integers to search for GCD |
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C nFLd :: length of the input integer list. |
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INTEGER nFLd |
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INTEGER fldList(nFld) |
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C !LOCAL VARIABLES: |
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INTEGER mnFld, divise |
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INTEGER j, ii |
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LOGICAL flag |
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LOGICAL localDBg |
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CEOP |
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PARAMETER ( localDBg = .FALSE. ) |
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c PARAMETER ( localDBg = .TRUE. ) |
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mnFld = fldList(1) |
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DO j=1,nFld |
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mnFld = MIN( mnFld, fldList(j) ) |
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ENDDO |
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IF (localDBg) WRITE(0,'(A,I8)') 'FIND_GCD_N: mnFld=',mnFld |
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IF (mnFld.GT.1 ) THEN |
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divise = 1 |
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ii = 2 |
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DO WHILE ( ii.LE.mnFld ) |
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IF (localDBg) WRITE(0,'(A,I8)') ' GCD : try',ii |
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flag = .TRUE. |
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DO j=1,nFld |
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flag = flag.AND.(MOD(fldList(j),ii).EQ.0 ) |
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ENDDO |
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IF ( flag ) THEN |
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divise = divise*ii |
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DO j=1,nFld |
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fldList(j) = fldList(j)/ii |
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ENDDO |
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IF (localDBg) WRITE(0,'(A,I8)') |
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& 'FIND_GCD_N: com.fact=',ii |
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mnFld = mnFld/ii |
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ELSE |
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ii = ii+2 |
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IF (ii.EQ.4) ii=3 |
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ENDIF |
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ENDDO |
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C- Put back the origninal Nb: |
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IF (localDBg) WRITE(0,'(10I8)') (fldList(j),j=1,nFld) |
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DO j=1,nFld |
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fldList(j) = fldList(j)*divise |
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ENDDO |
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ELSE |
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divise = MAX( 0, mnFld ) |
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ENDIF |
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FIND_GCD_N = divise |
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RETURN |
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END |
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