mirror of https://gitlab.com/QEF/q-e.git
147 lines
4.5 KiB
Fortran
147 lines
4.5 KiB
Fortran
!
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! Copyright (C) 2002-2004 FPMD-PWSCF group
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! This file is distributed under the terms of the
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! GNU General Public License. See the file `License'
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! in the root directory of the present distribution,
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! or http://www.gnu.org/copyleft/gpl.txt .
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!
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!
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! ... This module contains functions to check if the code should
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! ... be stopped smootly.
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! ... In particular th function check_stop_now return .TRUE. if
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! ... either the user has created a given file or if the
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! ... elapsed time is larger than max_seconds
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!
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!------------------------------------------------------------------------------!
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MODULE check_stop
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!------------------------------------------------------------------------------!
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!
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USE kinds
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!
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IMPLICIT NONE
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!
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SAVE
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!
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REAL(dbl) :: max_seconds = 1.D+7
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LOGICAL, PRIVATE :: tinit = .FALSE.
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!
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!
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CONTAINS
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!
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! ... internal procedures
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!
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!-----------------------------------------------------------------------
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SUBROUTINE check_stop_init( val )
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!-----------------------------------------------------------------------
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!
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USE io_global, ONLY : ionode, ionode_id, stdout
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USE io_files, ONLY : exit_file, stopunit
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!
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IMPLICIT NONE
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!
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REAL(dbl), INTENT(IN) :: val
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LOGICAL :: tex
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REAL(dbl) :: seconds
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REAL(dbl) :: elapsed_seconds
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EXTERNAL elapsed_seconds
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!
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IF( tinit ) &
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WRITE( UNIT = stdout, &
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FMT = '(/,5X,"WARNING: check_stop already initialized")' )
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!
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IF ( val > 0.D0 ) max_seconds = val
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!
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IF ( ionode ) THEN
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!
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INQUIRE( FILE = TRIM( exit_file ), EXIST = tex )
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!
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IF ( tex ) THEN
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!
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OPEN( stopunit, FILE = TRIM( exit_file ), STATUS = 'OLD' )
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CLOSE( stopunit, STATUS = 'DELETE' )
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!
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END IF
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!
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END IF
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!
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seconds = elapsed_seconds()
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tinit = .TRUE.
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!
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RETURN
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!
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END SUBROUTINE
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!
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!
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!-----------------------------------------------------------------------
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FUNCTION check_stop_now( inunit )
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!-----------------------------------------------------------------------
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!
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USE mp, ONLY : mp_bcast
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USE mp_global, ONLY : intra_image_comm
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USE io_global, ONLY : ionode, ionode_id, stdout
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USE io_files, ONLY : exit_file, stopunit, iunexit
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!
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IMPLICIT NONE
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!
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INTEGER, OPTIONAL, INTENT(IN) :: inunit
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INTEGER :: unit
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LOGICAL :: check_stop_now, tex
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REAL(dbl) :: seconds
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REAL(dbl) :: elapsed_seconds
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EXTERNAL elapsed_seconds
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!
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!
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! ... elapsed_seconds is a C function returning the elapsed solar
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! ... time in seconds since the first call to the function itself
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!
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IF( .NOT. tinit ) &
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CALL errore( 'check_stop_now', 'check_stop not initialized', 1 )
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!
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unit = stdout
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IF ( PRESENT( inunit ) ) unit = inunit
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!
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check_stop_now = .FALSE.
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!
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IF ( ionode ) THEN
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!
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INQUIRE( FILE = TRIM( exit_file ), EXIST = tex )
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!
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IF ( tex ) THEN
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!
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check_stop_now = .TRUE.
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!
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WRITE( UNIT = unit, &
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FMT = '(/,5X,"Program stopped by user request")' )
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!
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OPEN( UNIT = iunexit, FILE = TRIM( exit_file ) )
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CLOSE( UNIT = iunexit, STATUS = 'DELETE' )
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!
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END IF
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!
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seconds = elapsed_seconds()
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!
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IF ( seconds > max_seconds ) THEN
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!
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check_stop_now = .TRUE.
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!
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WRITE( UNIT = unit, &
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FMT = '(/,5X,"Maximum CPU time exceeded")' )
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WRITE( UNIT = unit, &
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FMT = '(/,5X,"max_seconds = ",F10.2)' ) max_seconds
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WRITE( UNIT = unit, &
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FMT = '(5X,"elapsed seconds = ",F10.2)' ) seconds
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!
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END IF
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!
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END IF
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!
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CALL mp_bcast( check_stop_now, ionode_id, intra_image_comm )
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!
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RETURN
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!
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END FUNCTION check_stop_now
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!
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!------------------------------------------------------------------------------!
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END MODULE check_stop
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!------------------------------------------------------------------------------!
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