HP XC System Software Administration Guide Version 3.1

Table 15-3 Environment Variables for LSF-HPC with SLURM Enhancement (lsf.conf File) (continued)
DescriptionEnvironment Variable
Some LSF-HPC with SLURM communication can occur through privileged
ports. This setting disables privileged ports usage ensuring that no
communication occurs through privileged ports. Disabling privileged ports
helps to ensure system security.
By default, LSF-HPC with SLURM daemons and clients running under the
root account use privileged ports to communicate with each other. If
LSF_NON_PRIVILEGED_PORTS is undefined, and if LSF_AUTH is not defined
in lsf.conf file, LSF daemons check the privileged port of request message
to perform authentication.
If LSF_NON_PRIVILEGED_PORTS=Y is defined, LSF-HPC with SLURM clients
(LSF commands and daemons) do not use privileged ports to communicate
with daemons, and LSF daemons do not check privileged ports of incoming
requests to do authentication.
This setting is undefined by default.
LSF_NON_PRIVILEGED_PORTS=Y|y
This setting disables cleanup of jobs other than LSF jobs running in a SLURM
LSF partition.
By default, only LSF jobs are allowed to run within a SLURM LSF partition.
LSF-HPC with SLURM periodically cleans up any jobs submitted outside of
LSF-HPC with SLURM. This cleanup period is defined through
LSB_RLA_UPDATE.
For example, the following srun job is not submitted through LSF-HPC with
SLURM, so it is terminated:
% srun -n 4 -p lsf sleep 100000srun: error: n13: task[0-1]: Terminated
srun: Terminating job
If LSF_SLURM_DISABLE_CLEANUP=Y is set, this job would be allowed to
run.
This setting is undefined by default.
LSF_SLURM_DISABLE_CLEANUP=y|Y
This setting specifies the LSF-HPC with SLURM tmp directory for HP XC
systems. The default LSF_TMPDIR /tmp cannot be shared across nodes, so
LSF_SLURM_TMPDIR must specify a path that is accessible on all nodes of the
HP XC system. LSF_SLURM_TMPDIR affects only HP XC configuration. It is
ignored on other systems in a mixed cluster environment. The location of
LSF-HPC with SLURM tmp directory is determined in the following order:
• LSF_SLURM_TMPDIR, if defined
• LSF_TMPDIR, if defined
• The default shared directory /hptc_cluster/lsf/tmp
The default path is /hptc_cluster/lsf/tmp.
LSF_SLURM_TMPDIR=path
Table 15-4 describes the environment variables in the lsb.queues file that you can use to enhance
LSF-HPC with SLURM.
194 Managing LSF