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jmc |
1.1 |
C $Header: /u/gcmpack/MITgcm/model/src/checkpoint.F,v 1.67 2006/08/09 02:23:13 jmc Exp $ |
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C $Name: $ |
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_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: DO_WRITE_PICKUP |
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C !INTERFACE: |
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SUBROUTINE DO_WRITE_PICKUP( |
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I modelEnd, |
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I myTime, myIter, myThid ) |
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C !DESCRIPTION: |
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C This is the controlling routine that decides when to write restart |
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C (or "pickup" or "checkpoint" ) files. Then it calls 2 subroutines |
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C to write the main-model pickup and each package pickup files. |
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C |
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C Both ``rolling-pickup'' files and permanent pickup files |
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C are written from here. A rolling pickup works through a circular |
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C list of suffices. Generally the circular list has two entries so |
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C that a rolling pickup will overwrite the last rolling |
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C pickup but one. This is useful for running long jobs without |
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C filling too much disk space. In a permanent pickup, data is |
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C written suffixed by the current timestep number. Permanent |
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C pickups can be used to provide snap-shots from which the |
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C model can be restarted. |
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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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LOGICAL DIFFERENT_MULTIPLE |
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EXTERNAL DIFFERENT_MULTIPLE |
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C !INPUT PARAMETERS: |
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C modelEnd :: true if call at end of model run. |
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C myTime :: Current time of simulation ( s ) |
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C myIter :: Iteration number |
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C myThid :: Thread number for this instance of the routine. |
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LOGICAL modelEnd |
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INTEGER myThid |
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INTEGER myIter |
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_RL myTime |
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CEOP |
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C !LOCAL VARIABLES: |
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C permPickup :: Flag indicating whether a permanent pickup will |
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C be written. |
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C tempPickup :: Flag indicating if it is time to write a non-permanent |
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C pickup (that will be permanent if permPickup=T) |
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C fn :: Temp. for building file name string. |
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C msgBuf :: message buffer |
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LOGICAL permPickup, tempPickup |
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CHARACTER*(MAX_LEN_FNAM) fn |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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permPickup = .FALSE. |
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tempPickup = .FALSE. |
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permPickup = |
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& DIFFERENT_MULTIPLE(pChkPtFreq,myTime,deltaTClock) |
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tempPickup = |
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& DIFFERENT_MULTIPLE( chkPtFreq,myTime,deltaTClock) |
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#ifdef ALLOW_CAL |
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IF ( useCAL ) THEN |
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CALL CAL_TIME2DUMP( pChkPtFreq, deltaTClock, |
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U permPickup, |
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I myTime, myIter, myThid ) |
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CALL CAL_TIME2DUMP( chkPtFreq, deltaTClock, |
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U tempPickup, |
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I myTime, myIter, myThid ) |
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ENDIF |
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#endif |
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IF ( |
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& ( .NOT.modelEnd .AND. (permPickup.OR.tempPickup) ) |
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& .OR. |
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& ( modelEnd .AND. .NOT.(permPickup.OR.tempPickup) ) |
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& ) THEN |
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C-- this is time to write pickup files |
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C- write a pickup for each package which need it to restart |
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CALL PACKAGES_WRITE_PICKUP( |
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I permPickup, myTime, myIter, myThid ) |
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C- write main model pickup |
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IF ( .NOT.useOffLine ) THEN |
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CALL WRITE_PICKUP( |
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I permPickup, myTime, myIter, myThid ) |
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ENDIF |
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_BEGIN_MASTER(myThid) |
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C- Write suffix for stdout information |
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IF ( permPickup ) THEN |
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WRITE(fn,'(I10.10)') myIter |
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ELSE |
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WRITE(fn,'(A)') checkPtSuff(nCheckLev) |
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ENDIF |
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C- Write information to stdout so there is a record that |
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C writing the pickup was completed |
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WRITE(msgBuf,'(A11,I10,1X,A10)') |
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& "%CHECKPOINT ",myIter,fn |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT, myThid ) |
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C- Update pickup level for the next time we write pickup |
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IF ( .NOT. permPickup ) THEN |
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nCheckLev = MOD(nCheckLev, maxNoChkptLev)+1 |
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ENDIF |
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_END_MASTER(myThid) |
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C-- time to write pickup files: end |
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ENDIF |
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RETURN |
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END |
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