HP XC System Software Administration Guide Version 3.1

Table 15-3 Environment Variables for LSF-HPC with SLURM Enhancement (lsf.conf File)
DescriptionEnvironment Variable
This entry specifies the TCP port used for communication between the
LSF-HPC with SLURM allocation adapter (RLA) and the SLURM scheduler
plug-in.
The default port number is 6883.
LSB_RLA_PORT=port_number
This entry defines the communications timeout between RLA and its clients
(for example, sbatchd and the SLURM scheduler plug-in.)
The default value is 10 seconds.
LSB_RLA_TIMEOUT=seconds
This entry specifies how often the LSF-HPC with SLURM scheduler refreshes
free node information from RLA.
The default value is 600 seconds.
LSB_RLA_UPDATE=seconds
This entry specifies the directory to store the RLA status file. It enables RLA
to recover its original state when it restarts. When RLA first starts, it creates
the directory defined by LSB_RLA_WORKDIR if it does not exist, then creates
subdirectories for each host. Avoid using /tmp or any other directory that is
automatically cleaned up by the system. Unless your installation has
restrictions on the LSB_SHAREDIR directory, use the default for
LSB_SHAREDIR.
The default value is LSB_SHAREDIR/cluster_name/rla_workdir.
LSB_RLA_WORKDIR=directory
This setting provides for either of two systemwide scheduling modes:
first-fit Under this mode, the scheduler chooses the first-met free nodes
to allocate.
By default, HPC SLURM integration works under first-fit
mode.
best-fit Under this mode, the scheduler applies a set of criteria to
choose nodes with minimal capacities that satisfy the job
request.
You can set LSB_SLURM_BESTFIT=Y to switch the scheduler
to work under best-fit mode.
In a heterogeneous HP XC system, a best-fit allocation may
be preferable for clusters running a mix of serial and parallel
jobs. In this context, best fit means: "the nodes that minimally
satisfy the requirements." Nodes with the maximum number
of processors are chosen first. For parallel and serial jobs, the
nodes with minimal memory, minimal tmp space, and minimal
weight are chosen.
LSB_SLURM_BESTFIT=Y
LSF-HPC with SLURM is configured to terminate unrecognized jobs in the
SLURM lsf partition periodically.
This entry stops LSF-HPC with SLURM from periodically terminating
unrecognized jobs in the SLURM lsf partition.
LSB_SLURM_NONLSF_USE=Y
This setting enables external scheduling for LSF-HPC with SLURM
The default value is Y, which is automatically set by lsfinstall.
LSF_ENABLE_EXTSCHEDULER=Y|y
192 Managing LSF