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C $Header: /u/gcmpack/MITgcm/pkg/flt/flt_init.F,v 1.1 2001/09/13 17:43:55 adcroft Exp $ |
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C $Name: $ |
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#include "FLT_CPPOPTIONS.h" |
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|
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subroutine flt_init ( myCurrentIter,myCurrentTime, myThid ) |
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|
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c ================================================================== |
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c SUBROUTINE flt_init |
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c ================================================================== |
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c |
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c o This routine initializes the start/restart positions. |
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c It does the following: |
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c o First it checks for local files. These are supposed to be restarts |
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c from a previous integration. The floats can therefore be read in |
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c without any further check (because they exist on the specific tile). |
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c o If no local files are available the routine assumes that this |
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c is an initialization. In that case it reads a global file |
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c (that has the same format as local files) and sorts those floats |
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c that exist on the specific tile into the local array. |
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c o At the end the float positions are written to the trajectory file |
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c |
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c ================================================================== |
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c SUBROUTINE flt_init |
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c ================================================================== |
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#include "EEPARAMS.h" |
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#include "SIZE.h" |
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#include "FLT.h" |
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#include "GRID.h" |
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#include "PARAMS.h" |
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|
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c == routine arguments == |
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|
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c mythid - thread number for this instance of the routine. |
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|
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INTEGER myCurrentIter, myThid |
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INTEGER ip, iG, jG |
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_RL myCurrentTime |
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c == local variables == |
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|
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INTEGER imax |
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parameter(imax=9) |
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_RL tmp(imax) |
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integer jtlo,jthi,itlo,ithi |
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INTEGER bi, bj, xx, yy |
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_RL xlo, xhi, ylo, yhi |
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|
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logical globalFile |
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|
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c number of active record in the file (might be lower than the |
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c total number of records because the tile could have contained |
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c more floats at an earlier restart |
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_RL npart_read, npart_dist |
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|
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character*(max_len_mbuf) msgbuf |
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INTEGER K, I, J, IL, iUnit |
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INTEGER errIO |
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INTEGER IFNBLNK |
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EXTERNAL IFNBLNK |
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INTEGER ILNBLNK |
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EXTERNAL ILNBLNK |
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CHARACTER*(MAX_LEN_PREC) record |
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|
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namelist /flt_nml/ flt_int_traj, flt_int_prof, flt_noise |
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& ,flt_file |
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c == end of interface == |
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|
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_BEGIN_MASTER(mythid) |
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|
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c Set default values. |
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flt_int_traj = 3600. |
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flt_int_prof = 43200. |
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flt_noise = 0.0 |
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flt_file = 'float_pos' |
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|
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c call nml_filter( 'data.flt', scrunit1, myThid ) |
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c if (scrunit1 .eq. 0) then |
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c stop 'flt_init: reading namelist failed' |
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c end if |
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c read( scrunit1, nml = flt_nml ) |
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c close( scrunit1 ) |
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|
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C-- Open the parameter file |
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#ifdef TARGET_BGL |
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OPEN(UNIT=scrUnit1,FILE='scratch1',STATUS='UNKNOWN') |
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OPEN(UNIT=scrUnit2,FILE='scratch2',STATUS='UNKNOWN') |
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#else |
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OPEN(UNIT=scrUnit1,STATUS='SCRATCH') |
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OPEN(UNIT=scrUnit2,STATUS='SCRATCH') |
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#endif |
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OPEN(UNIT=modelDataUnit,FILE='data.flt',STATUS='OLD', |
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& IOSTAT=errIO) |
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IF ( errIO .LT. 0 ) THEN |
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WRITE(msgBuf,'(A)') |
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& 'S/R FLT_INIT' |
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CALL PRINT_ERROR( msgBuf , 1) |
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WRITE(msgBuf,'(A)') |
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& 'Unable to open flt parameter' |
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CALL PRINT_ERROR( msgBuf , 1) |
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WRITE(msgBuf,'(A)') |
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& 'file "data.flt"' |
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CALL PRINT_ERROR( msgBuf , 1) |
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CALL MODELDATA_EXAMPLE( myThid ) |
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STOP 'ABNORMAL END: S/R FLT_INIT' |
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ENDIF |
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|
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DO WHILE ( .TRUE. ) |
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READ(modelDataUnit,FMT='(A)',END=1001) RECORD |
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IL = MAX(ILNBLNK(RECORD),1) |
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IF ( RECORD(1:1) .NE. commentCharacter ) |
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& WRITE(UNIT=scrUnit1,FMT='(A)') RECORD(:IL) |
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WRITE(UNIT=scrUnit2,FMT='(A)') RECORD(:IL) |
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ENDDO |
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1001 CONTINUE |
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CLOSE(modelDataUnit) |
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|
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C-- Report contents of model parameter file |
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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 , 1) |
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WRITE(msgBuf,'(A)') '// Float parameter file "data.flt"' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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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 , 1) |
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iUnit = scrUnit2 |
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REWIND(iUnit) |
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DO WHILE ( .TRUE. ) |
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READ(UNIT=iUnit,FMT='(A)',END=2001) RECORD |
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IL = MAX(ILNBLNK(RECORD),1) |
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WRITE(msgBuf,'(A,A)') '>',RECORD(:IL) |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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ENDDO |
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2001 CONTINUE |
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CLOSE(iUnit) |
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WRITE(msgBuf,'(A)') ' ' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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|
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_END_MASTER( mythid ) |
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|
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C-- Read settings from model parameter file "data.flt". |
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iUnit = scrUnit1 |
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REWIND(iUnit) |
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|
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READ(UNIT=iUnit,NML=FLT_NML) !,IOSTAT=errIO) |
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IF ( errIO .LT. 0 ) THEN |
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WRITE(msgBuf,'(A)') |
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& 'S/R FLT_INIT' |
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CALL PRINT_ERROR( msgBuf , 1) |
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WRITE(msgBuf,'(A)') |
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& 'Error reading float parameter file ' |
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CALL PRINT_ERROR( msgBuf , 1) |
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WRITE(msgBuf,'(A)') |
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& 'parameter file "data.flt"' |
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CALL PRINT_ERROR( msgBuf , 1) |
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WRITE(msgBuf,'(A)') |
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& 'Problem in namelist FLT_NML' |
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CALL PRINT_ERROR( msgBuf , 1) |
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CALL MODELDATA_EXAMPLE( myThid ) |
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STOP 'ABNORMAL END: S/R FLT_INIT' |
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ENDIF |
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|
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c do some checks |
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|
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IF ( useFLT .AND. useOBCS ) THEN |
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WRITE(msgBuf,'(A,A)') |
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& 'S/R FLT_INIT: Integrating floats is currently not possible', |
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& 'in combination with open boundaries.' |
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CALL PRINT_ERROR( msgBuf , myThid) |
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STOP 'ABNORMAL END: S/R FLT_INIT' |
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ENDIF |
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|
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_BARRIER |
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|
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c This might be faster, since the assignment is only done once. |
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jtlo = mybylo(mythid) |
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jthi = mybyhi(mythid) |
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itlo = mybxlo(mythid) |
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ithi = mybxhi(mythid) |
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|
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|
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do bj = jtlo,jthi |
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do bi = itlo,ithi |
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c |
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c (1) read actual number floats from file |
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call mdsreadvector_flt(flt_file,globalFile,64,'RL', |
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& imax,tmp,bi,bj,1,mythid) |
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npart_read = tmp(1) |
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max_npart = tmp(6) |
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|
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if (globalFile) then |
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npart_tile(bi,bj) = 0 |
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else |
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npart_tile(bi,bj) = INT(npart_read) |
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endif |
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|
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do ip=1,INT(npart_read) |
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|
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call mdsreadvector_flt(flt_file,globalFile,64,'RL', |
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& imax,tmp,bi,bj,ip+1,mythid) |
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|
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if (globalFile) then |
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c |
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c check if floats are existing on tile. If not, set to zero |
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c use southern/western side for axis information |
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c |
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|
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c note: The possible area for a float has to extended to the |
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c space "between" two T points, i.e. xc(sNx) of one tile |
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c and xc(1) of the neighboring tile. This cannot be solved |
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c by simply using xc(sNx+1) or xc(0) because periodicity |
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c could imply wrong values |
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c |
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iG = myXGlobalLo + (bi-1)*sNx |
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jG = myYGlobalLo + (bj-1)*sNy |
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xlo = xc(1, 1, bi,bj) - delX(iG)*0.5 |
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xhi = xc(sNx,1,bi,bj) + delX(iG+sNx-1)*0.5 |
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ylo = yc(1, 1, bi,bj) - delY(jG)*0.5 |
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yhi = yc(1,sNy,bi,bj) + delY(jG+sNy-1)*0.5 |
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|
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if (tmp(3) .ge. xlo .and. tmp(3) .le. xhi .and. |
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& tmp(4) .ge. ylo .and. tmp(4) .le. yhi) then |
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|
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npart_tile(bi,bj) = npart_tile(bi,bj) + 1 |
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if (npart_tile(bi,bj) .gt. max_npart_tile) |
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& stop ' max_npart_tile too low. stop in flt_init' |
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|
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npart(npart_tile(bi,bj),bi,bj) = tmp(1) |
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tstart(npart_tile(bi,bj),bi,bj) = tmp(2) |
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xpart(npart_tile(bi,bj),bi,bj) = tmp(3) |
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ypart(npart_tile(bi,bj),bi,bj) = tmp(4) |
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kpart(npart_tile(bi,bj),bi,bj) = tmp(5) |
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kfloat(npart_tile(bi,bj),bi,bj) = tmp(6) |
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iup(npart_tile(bi,bj),bi,bj) = tmp(7) |
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itop(npart_tile(bi,bj),bi,bj) = tmp(8) |
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tend(npart_tile(bi,bj),bi,bj) = tmp(9) |
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endif |
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|
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c else |
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|
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c npart(ip,bi,bj) = tmp(1) |
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c tstart(ip,bi,bj) = tmp(2) |
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c xpart(ip,bi,bj) = tmp(3) |
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c ypart(ip,bi,bj) = tmp(4) |
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c kpart(ip,bi,bj) = tmp(5) |
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c kfloat(ip,bi,bj) = tmp(6) |
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c iup(ip,bi,bj) = tmp(7) |
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c itop(ip,bi,bj) = tmp(8) |
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c tend(ip,bi,bj) = tmp(9) |
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|
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endif |
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|
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|
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enddo |
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|
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_BARRIER |
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_BEGIN_MASTER( myThid ) |
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npart_dist = DBLE(npart_tile(bi,bj)) |
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_GLOBAL_SUM_R8( npart_dist, myThid ) |
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if (.not. globalFile) _GLOBAL_SUM_R8(npart_read,myThid) |
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if (myProcId .eq. 0) then |
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write(errormessageunit,*) ' max _npart: ',max_npart |
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write(errormessageunit,*) 'sum npart_read: ',npart_read |
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write(errormessageunit,*) 'sum npart_tile: ',npart_dist |
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endif |
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_END_MASTER( myThid ) |
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_BARRIER |
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|
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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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