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C $Header: /u/gcmpack/MITgcm/pkg/longstep/longstep_readparms.F,v 1.3 2010/01/18 01:04:18 jmc Exp $ |
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C $Name: $ |
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#include "LONGSTEP_OPTIONS.h" |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CBOP |
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C !ROUTINE: LONGSTEP_READPARMS |
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|
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C !INTERFACE: |
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SUBROUTINE LONGSTEP_READPARMS( myThid ) |
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C !DESCRIPTION: |
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C Initialize longstep parameters, read in data.longstep |
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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 "LONGSTEP_PARAMS.h" |
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#include "PARAMS.h" |
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C !INPUT PARAMETERS: |
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INTEGER myThid |
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CEOP |
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|
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#ifdef ALLOW_LONGSTEP |
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C !LOCAL VARIABLES: |
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C iUnit :: unit number for I/O |
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C msgBuf :: message buffer |
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INTEGER iUnit |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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|
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C LS_nIter :: number of dynamics time steps between ptracer steps |
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C LS_whenToSample :: when to sample dynamical fields for the longstep average |
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C 0 - at beginning of timestep (reproduces offline results) |
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C 1 - after first THERMODYNAMICS but before DYNAMICS |
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C (use use old U,V,W for advection, but new T,S for GCHEM if |
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C staggerTimeStep=.FALSE.; reproduces online with |
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C staggerTimeStep=.FALSE. for LS_nIter=1) |
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C 2 - after DYNAMICS and second THERMODYNAMICS |
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C (use new U,V,W and T,S; reproduces online with |
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C staggerTimeStep=.TRUE. for LS_nIter=1) |
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NAMELIST /LONGSTEP_PARM01/ |
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& LS_nIter, LS_whenToSample |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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IF ( .NOT.usePTRACERS ) THEN |
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C- pkg LONGSTEP is not used |
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_BEGIN_MASTER(myThid) |
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C- Track pkg activation status: |
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C print a (weak) warning if data.longstep is found |
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CALL PACKAGES_UNUSED_MSG( |
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& 'usePTRACERS', 'LONGSTEP_READPARMS', 'longstep' ) |
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_END_MASTER(myThid) |
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RETURN |
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ENDIF |
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|
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_BEGIN_MASTER(myThid) |
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|
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C Set defaults values for parameters in LONGSTEP_PARAMS.h |
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LS_nIter = 1 |
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LS_whenToSample = 0 |
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|
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C Open and read the data.longstep file |
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WRITE(msgBuf,'(A)') ' LONGSTEP_READPARMS: opening data.longstep' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , myThid ) |
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CALL OPEN_COPY_DATA_FILE( |
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I 'data.longstep', 'LONGSTEP_READPARMS', |
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O iUnit, |
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I myThid ) |
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READ(UNIT=iUnit,NML=LONGSTEP_PARM01) |
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WRITE(msgBuf,'(A)') |
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& ' LONGSTEP_READPARMS: finished reading data.longstep' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , myThid ) |
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|
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C Close the open data file |
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CLOSE(iUnit) |
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|
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C Now set-up any remaining parameters that result from the input |
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C parameters |
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|
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C-- Print a summary of longstep parameter values: |
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iUnit = standardMessageUnit |
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WRITE(msgBuf,'(A)') '// ===================================' |
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CALL PRINT_MESSAGE( msgBuf, iUnit, SQUEEZE_RIGHT , myThid ) |
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WRITE(msgBuf,'(A)') '// longstep parameters ' |
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CALL PRINT_MESSAGE( msgBuf, iUnit, SQUEEZE_RIGHT , myThid ) |
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WRITE(msgBuf,'(A)') '// ===================================' |
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CALL PRINT_MESSAGE( msgBuf, iUnit, SQUEEZE_RIGHT , myThid ) |
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CALL WRITE_0D_I( LS_nIter, INDEX_NONE, |
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& 'LS_nIter =', |
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& ' /* number of dynamics steps between ptracer steps */') |
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CALL WRITE_0D_I( LS_whenToSample, INDEX_NONE, |
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& 'LS_whenToSample =', |
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& ' /* 0: before; 1: after TD, before DYN; 2: after */') |
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WRITE(msgBuf,'(A)') ' -----------------------------------' |
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CALL PRINT_MESSAGE( msgBuf, iUnit, SQUEEZE_RIGHT, myThid ) |
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|
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_END_MASTER(myThid) |
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C Everyone else must wait for the parameters to be loaded |
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_BARRIER |
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|
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#endif /* ALLOW_LONGSTEP */ |
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|
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RETURN |
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END |
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