quantum-espresso/Modules/io_global.f90

45 lines
1.3 KiB
Fortran

!
! Copyright (C) 2002-2013 Quantum ESPRESSO group
! This file is distributed under the terms of the
! GNU General Public License. See the file `License'
! in the root directory of the present distribution,
! or http://www.gnu.org/copyleft/gpl.txt .
!
!----------------------------------------------------------------------------
MODULE io_global
!----------------------------------------------------------------------------
!! I/O global variables
!
IMPLICIT NONE
!
PRIVATE
SAVE
!
PUBLIC :: stdin, stdout, qestdin
PUBLIC :: ionode, ionode_id, meta_ionode, meta_ionode_id
!
INTEGER, PARAMETER :: stdin = 5
!! unit connected to standard input
INTEGER :: qestdin= 9
!! unit connected to input file (xml or text)
INTEGER :: stdout = 6
!! unit connected to standard output
!
! For parallel execution: I/O within an image
! These are set at startup by calling mp_world_start
!
INTEGER :: ionode_id = 0
!! index of the i/o node for this image
LOGICAL :: ionode = .TRUE.
!! TRUE if this processor is a i/o node for this image.
!
! For parallel execution: global I/O node (for NEB, PHonon, etc)
! These are set at startup by calling mp_image_start
!
INTEGER :: meta_ionode_id = 0
!! index of the global i/o node
LOGICAL :: meta_ionode = .TRUE.
!! TRUE if this processor is global i/o node
!
END MODULE io_global