mirror of https://gitlab.com/QEF/q-e.git
82 lines
2.3 KiB
Fortran
82 lines
2.3 KiB
Fortran
!
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! Copyright (C) 2001-2004 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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SUBROUTINE restart_from_file
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!----------------------------------------------------------------------------
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!
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USE io_global, ONLY : stdout, ionode
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USE io_files, ONLY : iunres, tmp_dir
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USE control_flags, ONLY : restart
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USE parser, ONLY : delete_if_present
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USE mp_global, ONLY : mpime
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!
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IMPLICIT NONE
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!
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CHARACTER(LEN=20) :: where_restart
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! parameter indicating from where to restart
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LOGICAL :: exst
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!
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!
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! ... check if restart file is present
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!
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IF ( ionode ) THEN
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!
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iunres = 1
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!
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IF ( .NOT. restart ) THEN
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!
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!WRITE( UNIT = stdout, &
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! & FMT = '(/5X,"RECOVER from restart file has been", &
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! & " switched off on input")' )
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!
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CALL delete_if_present( TRIM( tmp_dir ) // 'restart' )
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!
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RETURN
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!
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END IF
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!
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CALL seqopn( iunres, 'restart', 'UNFORMATTED', restart )
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!
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IF ( .NOT. restart ) THEN
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!
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WRITE( UNIT = stdout, &
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& FMT = '(/5X,"RECOVER from restart file failed:", &
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& " file not found")')
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!
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CLOSE( UNIT = iunres, STATUS = 'DELETE' )
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!
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RETURN
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!
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END IF
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!
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WRITE( UNIT = stdout, FMT = '(/5X,"read information from restart file")' )
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!
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READ( iunres, ERR = 10, END = 10 ) where_restart
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!
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WRITE( UNIT = stdout, FMT = '(5X,"Restarting in ",A)' ) where_restart
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!
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IF ( where_restart /= 'ELECTRONS' .AND. where_restart /= 'IONS' ) THEN
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!
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WRITE( UNIT = stdout, FMT = * ) where_restart , '......?'
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!
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CALL errore( 'restart_from_file', ' wrong recover file ', 1 )
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!
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END IF
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!
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! ... close the file for later use
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!
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CLOSE( UNIT = iunres, STATUS = 'KEEP' )
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!
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END IF
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!
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RETURN
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!
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10 CALL errore( 'restart_from_file', 'problems in reading recover file', 1 )
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!
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END SUBROUTINE restart_from_file
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