/etc/openmpi/openmpi-default-hostfile is in openmpi-bin 2.0.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | #
# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
# University Research and Technology
# Corporation. All rights reserved.
# Copyright (c) 2004-2005 The University of Tennessee and The University
# of Tennessee Research Foundation. All rights
# reserved.
# Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
# University of Stuttgart. All rights reserved.
# Copyright (c) 2004-2005 The Regents of the University of California.
# All rights reserved.
# $COPYRIGHT$
#
# Additional copyrights may follow
#
# $HEADER$
#
# This is the default hostfile for Open MPI. Notice that it does not
# contain any hosts (not even localhost). This file should only
# contain hosts if a system administrator wants users to always have
# the same set of default hosts, and is not using a batch scheduler
# (such as SLURM, PBS, etc.).
#
# Note that this file is *not* used when running in "managed"
# environments (e.g., running in a job under a job scheduler, such as
# SLURM or PBS / Torque).
#
# If you are primarily interested in running Open MPI on one node, you
# should *not* simply list "localhost" in here (contrary to prior MPI
# implementations, such as LAM/MPI). A localhost-only node list is
# created by the RAS component named "localhost" if no other RAS
# components were able to find any hosts to run on (this behavior can
# be disabled by excluding the localhost RAS component by specifying
# the value "^localhost" [without the quotes] to the "ras" MCA
# parameter).
|