mirror of https://gitlab.com/QEF/q-e.git
103 lines
3.0 KiB
Fortran
103 lines
3.0 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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MODULE io_global
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!----------------------------------------------------------------------------
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!
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IMPLICIT NONE
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!
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PRIVATE
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SAVE
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!
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PUBLIC :: io_global_start, io_global_getionode, io_global_getmeta
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PUBLIC :: stdout, ionode, ionode_id, meta_ionode, meta_ionode_id
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!
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INTEGER :: stdout = 6 ! unit connected to standard output
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INTEGER :: ionode_id = 0 ! index of the i/o node
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LOGICAL :: ionode = .TRUE. ! identifies the i/o node
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INTEGER :: meta_ionode_id = 0 ! index of the i/o node for meta-codes
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LOGICAL :: meta_ionode = .TRUE. ! identifies the i/o node for meta-codes
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LOGICAL :: first = .TRUE.
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!
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CONTAINS
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!
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!-----------------------------------------------------------------------
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SUBROUTINE io_global_start( mpime, ionode_set )
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!-----------------------------------------------------------------------
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!
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IMPLICIT NONE
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!
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INTEGER, INTENT(IN) :: mpime, ionode_set
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!
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!
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IF ( mpime == ionode_set ) THEN
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!
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ionode = .TRUE.
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meta_ionode = .TRUE.
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!
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ELSE
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!
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ionode = .FALSE.
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meta_ionode = .FALSE.
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!
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END IF
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!
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ionode_id = ionode_set
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meta_ionode_id = ionode_set
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!
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first = .FALSE.
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!
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RETURN
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!
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END SUBROUTINE io_global_start
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!
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!
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!-----------------------------------------------------------------------
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SUBROUTINE io_global_getionode( ionode_out, ionode_id_out )
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!-----------------------------------------------------------------------
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!
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IMPLICIT NONE
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!
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LOGICAL, INTENT(OUT) :: ionode_out
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INTEGER, INTENT(OUT) :: ionode_id_out
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!
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!
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IF ( first ) &
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CALL errore( ' io_global_getionode ', ' ionode not yet defined ', 1 )
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!
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ionode_out = ionode
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ionode_id_out = ionode_id
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!
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RETURN
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!
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END SUBROUTINE io_global_getionode
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!
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!
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!-----------------------------------------------------------------------
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SUBROUTINE io_global_getmeta( ionode_out, ionode_id_out )
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!-----------------------------------------------------------------------
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!
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IMPLICIT NONE
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!
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LOGICAL, INTENT(OUT) :: ionode_out
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INTEGER, INTENT(OUT) :: ionode_id_out
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!
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!
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IF ( first ) &
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CALL errore( ' io_global_getmeta ', ' meta_ionode not yet defined ', 1 )
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!
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ionode_out = meta_ionode
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ionode_id_out = meta_ionode_id
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!
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RETURN
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!
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END SUBROUTINE io_global_getmeta
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!
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!
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END MODULE io_global
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