Hi,
the host file has been constructed automatically by the
configuration+installation process and seems to contain only comments
and a blank line:
(15:53:50) [zorg]:~> cat /opt/openmpi-3.x_debug/etc/openmpi-default-hostfile
#
# 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).
(15:53:52) [zorg]:~>
Thanks!
Eric
On 25/04/17 03:52 PM, r...@open-mpi.org wrote:
What is in your hostfile?
On Apr 25, 2017, at 11:39 AM, Eric Chamberland
<eric.chamberl...@giref.ulaval.ca> wrote:
Hi,
just testing the 3.x branch... I launch:
mpirun -n 8 echo "hello"
and I get:
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 8 slots
that were requested by the application:
echo
Either request fewer slots for your application, or make more slots available
for use.
--------------------------------------------------------------------------
I have to oversubscribe, so what do I have to do to bypass this "limitation"?
Thanks,
Eric
configure log:
http://www.giref.ulaval.ca/~cmpgiref/ompi_3.x/2017.04.25.10h46m08s_config.log
http://www.giref.ulaval.ca/~cmpgiref/ompi_3.x/2017.04.25.10h46m08s_ompi_info_all.txt
here is the complete message:
[zorg:30036] [[INVALID],INVALID] plm:rsh_lookup on agent ssh : rsh path NULL
[zorg:30036] plm:base:set_hnp_name: initial bias 30036 nodename hash 810220270
[zorg:30036] plm:base:set_hnp_name: final jobfam 49136
[zorg:30036] [[49136,0],0] plm:rsh_setup on agent ssh : rsh path NULL
[zorg:30036] [[49136,0],0] plm:base:receive start comm
[zorg:30036] [[49136,0],0] plm:base:setup_job
[zorg:30036] [[49136,0],0] plm:base:setup_vm
[zorg:30036] [[49136,0],0] plm:base:setup_vm creating map
[zorg:30036] [[49136,0],0] setup:vm: working unmanaged allocation
[zorg:30036] [[49136,0],0] using default hostfile
/opt/openmpi-3.x_debug/etc/openmpi-default-hostfile
[zorg:30036] [[49136,0],0] plm:base:setup_vm only HNP in allocation
[zorg:30036] [[49136,0],0] plm:base:setting slots for node zorg by cores
[zorg:30036] [[49136,0],0] complete_setup on job [49136,1]
[zorg:30036] [[49136,0],0] plm:base:launch_apps for job [49136,1]
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 8 slots
that were requested by the application:
echo
Either request fewer slots for your application, or make more slots available
for use.
--------------------------------------------------------------------------
[zorg:30036] [[49136,0],0] plm:base:orted_cmd sending orted_exit commands
[zorg:30036] [[49136,0],0] plm:base:receive stop comm
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