devel-boun...@open-mpi.org a écrit sur 27/02/2012 15:53:06 : > De : Ralph Castain <r...@open-mpi.org> > A : Open MPI Developers <de...@open-mpi.org> > Date : 27/02/2012 16:17 > Objet : Re: [OMPI devel] Problem with the openmpi-default-hostfile > (on the trunk) > Envoyé par : devel-boun...@open-mpi.org > > That's strange - I run on slurm frequently and never have this > problem, and my default hostfile is present and empty. Do you have > anything in your default mca param file that might be telling us to > use the hostfile? > > The only way I can find to get that behavior is if your default mca > param file includes the orte_default_hostfile value. In that case, > you are telling us to use the default hostfile, and so we will enforce it.
Hi Ralph, On my side, the default value of orte_default_hostfile is a pointer to etc/openmpi-default-hostfile. The command ompi_info -a gives : MCA orte: parameter "orte_default_hostfile" (current value: <..../etc/openmpi-default-hostfile>, data source: default value) Name of the default hostfile (relative or absolute path, "none" to ignore environmental or default MCA param setting) The following files are empty: - .../etc/openmpi-mca-params.conf - $HOME/.openmpi/mca-params.conf Another solution for me is to put "orte_default_hostfile=none" in one of these files. Pascal > > On Feb 27, 2012, at 5:57 AM, pascal.dev...@bull.net wrote: > > Hi all, > > I have problems with the openmpi-default-hostfile since the > following patch on the trunk > > changeset: 19874:088fc6c84a9f > user: rhc > date: Wed Feb 01 17:40:44 2012 +0000 > summary: In accordance with prior releases, we are supposed to > default to looking at the openmpi-default-hostfile as a default > hostfile. Restore that behavior, but ignore the file if it is empty. > Allow the user to ignore any MCA param setting pointing to a default > hostfile by setting the param to "none" (via cmd line or whatever) - > this allows them to override a setting in the system default MCA param file. > > According to the summary of this patch, the openmpi-default-hostfile > is ignored if it is empty. > But, when I run my jobs with slurm + mpirun, I get the following message: > -------------------------------------------------------------------------- > No nodes are available for this job, either due to a failure to > allocate nodes to the job, or allocated nodes being marked > as unavailable (e.g., down, rebooting, or a process attempting > to be relocated to another node when none are available). > -------------------------------------------------------------------------- > > I am able to run my job if: > - either I put my node(s) in the file etc/openmpi-default-hostfile > - or use "-mca orte_default_hostfile=none" in the mpirun command line > - or "export OMPI_MCA_orte_default_hostfile none" in my environment > > It appears that an empty openmpi-default-hostfile is not ignored. > This patch seems not be complete > > Or do I misunderstand something ? > > Pascal Devèze_______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel
