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jmc |
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C $Header: /u/gcmpack/MITgcm/eesupp/src/bar_check.F,v 1.1 2006/07/29 20:57:53 jmc Exp $ |
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jmc |
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C $Name: $ |
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#include "CPP_EEOPTIONS.h" |
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CBOP |
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C !ROUTINE: BAR_CHECK |
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C !INTERFACE: |
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SUBROUTINE BAR_CHECK( barrierId, myThid ) |
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C !DESCRIPTION: |
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C *=====================================================================* |
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C | SUBROUTINE BAR\_CHECK |
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C | o Check threads synchronization in the barrier calling sequence |
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C *=====================================================================* |
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C | o Apply double BARRIER and check that all threads get the same |
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C | barrierId. |
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C *=====================================================================* |
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C !USES: |
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IMPLICIT NONE |
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C == Global variables == |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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C == Local common block == |
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INTEGER barStatus(nSx,nSy) |
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COMMON / BAR_CHECH_SYNCHRO / barStatus |
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C barrierId :: barrier identificator of this instance of BAR_CHECK |
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C myThid :: Thread number of this instance of BAR_CHECK |
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INTEGER barrierId |
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INTEGER myThid |
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C !LOCAL VARIABLES: |
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C == Local variables == |
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C bi,bj :: tile indices |
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C msgBuf :: Informational/error meesage buffer |
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INTEGER bi,bj |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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LOGICAL flag |
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CEOP |
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IF ( barrierId .NE. 0 ) THEN |
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C- Only do checking when barrierId is non-zero |
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C- Set barStatus to barrierId : |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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barStatus(bi,bj) = barrierId |
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ENDDO |
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ENDDO |
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C- Synchro |
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_BARRIER |
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C- Check that all threads have the same barStatus |
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flag = .FALSE. |
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DO bj = 1,nSy |
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DO bi = 1,nSx |
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flag = flag .OR. (barStatus(bi,bj).NE.barrierId) |
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ENDDO |
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ENDDO |
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IF ( flag ) THEN |
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WRITE(msgBuf,'(A,I4,A,I8)') 'BAR_CHECK: thread', myThid, |
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& ' out of Sync when reaching barrierId=', barrierId |
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jmc |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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#ifndef DISABLE_WRITE_TO_UNIT_ZERO |
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jmc |
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WRITE(0,*) myThid, barrierId, 'barStatus=', barStatus |
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#endif |
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STOP 'ABNORMAL END: S/R BAR_CHECK: OUT OF SYNC' |
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jmc |
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ENDIF |
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ENDIF |
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C- Synchro |
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_BARRIER |
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RETURN |
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END |
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