I'll see what I can do when next I have access to a slurm machine - hopefully in a day or two.
Are you sure you are at the top of the trunk? I reviewed the code, and it clearly detects that the default hostile is empty and ignores it if so. Like I said, I'm not seeing this behavior, and neither are the slurm machines on MTT. On Feb 28, 2012, at 1:25 AM, pascal.dev...@bull.net wrote: > > 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_______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel
