HP XC System 3.x Software - Manual (Page 58)

With LSF-HPC integrated with SLURM, you can use the LSF-SLURM External Scheduler to
specify SLURM options that specify the minimum number of nodes required for the job, specific
nodes for the job, and so on.
Note:
The SLURM external scheduler is a plug-in developed by Platform Computing Corporation for
LSF-HPC; it is not actually part of SLURM. This plug-in communicates with SLURM to gather
resource information and request allocations of nodes, but it is integrated with the LSF-HPC
scheduler.
The format of this option is shown here:
-ext "SLURM[slurm-arguments]"
The bsub command format to submit a parallel job to an LSF-HPC allocation of compute nodes
using the external scheduler option is as follows:
bsub -n num-procs -ext "SLURM[slurm-arguments]" [bsub-options][ -srun
[srun-options]] [jobname] [job-options]
The slurm-arguments parameter can be one or more of the following srun options, separated
by semicolons, as described in
Table 5-1 .
Table 5-1 Arguments for the SLURM External Scheduler
Function SLURM Arguments
Specifies the minimum and maximum number of nodes allocated to job.
The job allocation will contain at least the minimum number of nodes. nodes=min[-max]
Specifies minimum number of cores per node. Default value is 1. mincpus=ncpus
Specifies a minimum amount of real memory in megabytes of each node. mem=value
Specifies a minimum amount of temporary disk space in megabytes of each
node. tmp=value
Specifies a list of constraints. The list may include multiple features
separated by “&” or “|”. “&” represents ANDed, “|” represents ORed. constraint=feature
Requests a specific list of nodes. The job will at least contain these nodes.
The list may be specified as a comma-separated list of nodes or a range of
nodes nodelist=list of nodes
Requests that a specific list of hosts not be included in resource allocated
to this job. The list may be specified as a comma-separated list of nodes or
a range of nodes. exclude=list of nodes
Requests a mandatory contiguous range of nodes. contiguous=yes
The Platform Computing LSF-HPC documentation provides more information on general external
scheduler support.
Consider an HP XC system configuration in which lsfhost.localdomain is the LSF execution
host and nodes n[1-10] are compute nodes in the lsf partition. All nodes contain two cores,
providing 20 cores for use by LSF-HPC jobs.
Example 5-9 shows one way to submit a parallel job to run on a specific node or nodes.
58 Submitting Jobs