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edhill |
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C $Header: /u/gcmpack/MITgcm_contrib/eh3/regrid/regrid/regrid_init_varia.F,v 1.3 2006/08/12 03:19:59 edhill Exp $ |
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C $Name: $ |
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#include "REGRID_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: REGRID_INIT_VARIA |
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C !INTERFACE: |
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SUBROUTINE REGRID_INIT_VARIA( myThid ) |
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C !DESCRIPTION: |
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C Initialize REGRID variables |
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C !USES: |
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IMPLICIT NONE |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "REGRID_SIZE.h" |
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#include "REGRID.h" |
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#ifdef ALLOW_EXCH2 |
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#include "W2_EXCH2_TOPOLOGY.h" |
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#include "W2_EXCH2_PARAMS.h" |
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#endif |
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INTEGER ILNBLNK |
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EXTERNAL ILNBLNK |
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C !INPUT/OUTPUT PARAMETERS: |
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C myThid :: my Thread Id number |
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INTEGER myThid |
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CEOP |
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C !LOCAL VARIABLES: |
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INTEGER i,k, iface, uniq_tnum, bi,bj |
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INTEGER irx, isrc, idst, nFx,nFy, init_nlpts,nlpts |
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INTEGER iUnit, errIO, nnb |
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INTEGER iminx,iminy, imaxx,imaxy |
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_RL wt |
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CHARACTER*(MAX_LEN_FNAM) fname |
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CHARACTER*(MAX_LEN_MBUF) msgbuf |
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LOGICAL exst |
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C Regrid files contain information on a per-face basis. This is |
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C convenient in two respects: (1) the domain can be re-tiled without |
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C changing any of the files [since the ordering with respect to |
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C tiles is performed here in the model] and (2) when faces are |
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C removed or added only the corresponding per-face files will need |
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C to be removed or added [and all the other per-face files remain |
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C unchanged provided the face numbers do not change]. |
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C |
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C The convention is: "points cycle most quickly in X and then Y" |
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C |
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C +-------------------+ |
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C | Face | |
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C | | |
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C | +-----+ | |
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C Y | |Tile | | |
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C | +-----+ | |
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C | | |
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C |123... | |
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C +-------------------+ |
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C X |
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_BEGIN_MASTER( myThid ) |
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WRITE(msgBuf,'(a)') |
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& '// =======================================================' |
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CALL PRINT_MESSAGE(msgBuf,standardMessageUnit, |
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& SQUEEZE_RIGHT,myThid) |
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WRITE(msgBuf,'(a)') |
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& '// Begin reading the per-face REGRID information' |
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CALL PRINT_MESSAGE(msgBuf,standardMessageUnit, |
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& SQUEEZE_RIGHT,myThid) |
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WRITE(msgBuf,'(a)') |
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& '// =======================================================' |
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CALL PRINT_MESSAGE(msgBuf,standardMessageUnit, |
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& SQUEEZE_RIGHT,myThid) |
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nlpts = 0 |
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CALL MDSFINDUNIT(iUnit, myThid) |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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#ifdef ALLOW_EXCH2 |
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C EXCH2 domains |
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uniq_tnum = W2_myTileList(bi) |
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iface = exch2_myFace(uniq_tnum) |
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nFx = exch2_mydnx(uniq_tnum) |
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nFy = exch2_mydny(uniq_tnum) |
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iminx = exch2_tbasex(uniq_tnum) + 1 |
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imaxx = iminx + exch2_tnx(uniq_tnum) - 1 |
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iminy = exch2_tbasey(uniq_tnum) + 1 |
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imaxy = iminy + exch2_tny(uniq_tnum) - 1 |
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#else |
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C Global tile number for simple single-face "EXCH1" domains |
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iG = bi + (myXGlobalLo-1)/sNx |
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jG = bj + (myYGlobalLo-1)/sNy |
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uniq_tnum = (jG - 1)*(nPx*nSx) + iG |
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iface = 1 |
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nFx = nSx * sNx |
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nFy = sSy * sNy |
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iminx = myXGlobalLo |
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imaxx = myXGlobalLo + sNx - 1 |
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iminy = myYGlobalLo |
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imaxy = myYGlobalLo + sNy - 1 |
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#endif |
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C WRITE(*,*) 'iminx, imaxx, nFx, nFy = ', |
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C & iminx, imaxx, nFx, nFy |
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C Read through all the weights files for this tile (face) and |
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C locate the points that belong to this tile |
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DO i = 1,regrid_ngrids |
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IF (i .EQ. 1) THEN |
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nlpts = 0 |
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ELSE |
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nlpts = REGRID_iend(i,bi,bj) |
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ENDIF |
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init_nlpts = nlpts |
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DO k = 1,MAX_LEN_FNAM |
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fname(k:k) = ' ' |
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ENDDO |
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nnb = ILNBLNK(REGRID_fbname_in(i)) |
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write(fname,'(a,i3.3,a)') |
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& REGRID_fbname_in(i)(1:nnb),iface,'.regrid.ascii' |
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nnb = ILNBLNK(fname) |
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INQUIRE( FILE=fname, EXIST=exst ) |
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IF (.NOT. exst) THEN |
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WRITE(msgBuf,'(A)') 'S/R REGRID_INIT_VARIA()' |
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CALL PRINT_ERROR( msgBuf , 1) |
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WRITE(msgBuf,'(3A)') ' File "', |
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& fname(1:nnb), '" does not exist' |
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CALL PRINT_ERROR( msgBuf , 1) |
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CLOSE(iUnit) |
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STOP ' stopped in REGRID_INIT_VARIA()' |
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ENDIF |
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open(unit=iUnit, file=fname, status='old', iostat=errIO) |
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IF (errIO .LT. 0) THEN |
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WRITE(msgBuf,'(A)') 'S/R REGRID_INIT_VARIA()' |
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CALL PRINT_ERROR( msgBuf , 1) |
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WRITE(msgBuf,'(3A)') 'Unable to open file="', |
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& fname(1:nnb), '"' |
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CALL PRINT_ERROR( msgBuf , 1) |
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CLOSE(iUnit) |
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STOP ' stopped in REGRID_INIT_VARIA()' |
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ELSE |
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WRITE(msgBuf,'(3a)') 'Reading file "', fname(1:nnb),'"' |
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call PRINT_MESSAGE(msgBuf,standardMessageUnit, |
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& SQUEEZE_RIGHT,myThid) |
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ENDIF |
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DO WHILE ( .TRUE. ) |
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C READ(iUnit,fmt='(2(I10,1X),1P1E23.13E3)',iostat=errIO) |
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READ(iUnit,fmt='(2(1X,I10),1X,E28.22)',iostat=errIO) |
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& isrc, idst, wt |
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IF ( errIO .NE. 0 ) THEN |
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GOTO 100 |
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ENDIF |
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irx = MOD(isrc,nFx) |
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IF (irx .EQ. 0) irx = nFx |
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IF ((iminx .LE. irx) .AND. (irx .LE. imaxx)) THEN |
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nlpts = nlpts + 1 |
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REGRID_i_loc(nlpts,bi,bj) = irx |
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REGRID_j_loc(nlpts,bi,bj) = isrc/nFx + 1 |
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REGRID_i_out(nlpts,bi,bj) = idst |
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REGRID_amat(nlpts,bi,bj) = wt |
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ENDIF |
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ENDDO |
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100 CONTINUE |
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close(iUnit) |
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WRITE(msgBuf,'(a,i10)') ' num weights read = ', |
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& (nlpts - init_nlpts) |
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call PRINT_MESSAGE(msgBuf,standardMessageUnit, |
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& SQUEEZE_RIGHT,myThid) |
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REGRID_ibeg(i,bi,bj) = init_nlpts + 1 |
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REGRID_iend(i,bi,bj) = nlpts |
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ENDDO |
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ENDDO |
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ENDDO |
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WRITE(msgBuf,'(a)') ' ' |
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CALL PRINT_MESSAGE(msgBuf,standardMessageUnit, |
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& SQUEEZE_RIGHT,myThid) |
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_END_MASTER( myThid ) |
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RETURN |
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END |
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