HP XC System 4.x Software - Manual (Page 103)

Note:
If you exported any variables, such as SLURM_JOBID and SLURM_NPROCS, be sure to unset
them as follows before submitting any further jobs from the second terminal:
$ unset SLURM_JOBID
$ unset SLURM_NPROCS
You do not need to launch the /bin/bash shell to be able to interact with any compute node
resources; any running job will suffice. This is excellent for checking on long-running jobs. For
example, if you had submitted a CPU-intensive job, you could execute the uptime command
on all nodes in the allocation to confirm an expected high load on the nodes. The following is an
example of this; the LSF JOBID is 200 and the SLURM JOBID is 250:
$ srun --jobid=250 uptime
If you are concerned about allocating the resources too long or leaving them allocated long after
you finished using them, you could submit a simple sleep job to limit the allocation time, as
follows:
$ bsub -n4 -ext "SLURM[nodes=4]" -o %J.out sleep 300
Job <125> is submitted to the default queue .
After you confirm that this job is running using the bjobs -l 125 command, you can operate
interactively for with the resources. If LSF observes no SLURM activity within the allocation
after 5 minutes, it terminates the job. Any existing SLURM activity (including running MPI jobs
with the mpirun -srun command) is allowed to continue.
10.14 LSF Equivalents of SLURM srun Options
Table 10-3 describes the srun options and lists their LSF equivalents.
Table 10-3 LSF Equivalents of SLURM srun Options
LSF Equivalent Description srun Option
bsub -n num Number of processes (tasks) to run. -n
--ntasks=ntasks
HP XC does not provide this option because
the meaning of this option can be covered by
bsub -n
and mincpus=n.
Specifies the number of cores per task.
Min processors per node =
MAX(ncpus, mincpus) -c
--processors-per-task=ntasks
-ext "SLURM[nodes=minmax]"
where minmax is min[-max]
Specifies the minimum and, optionally,
maximum number of nodes allocated
to job. The job allocation will contain
at least the minimum number of nodes. -N
--nodes=min[-max]
-ext "SLURM[mincpus=n]" Specifies the minimum number of
cores per node. Min processors per
node = MAX(-c ncpus, --mincpus=n).
Default value is 1. --mincpus=n
-ext "SLURM[mem=MB]" Specifies a minimum amount of real
memory of each node. By default, job
does not require -ext. --mem=MB
-ext "SLURM[tmp=MB]" Specifies a minimum amount of
temporary disk space of each node. By
default, job does not require -ext. --tmp=MB
-ext "SLURM[constraint=list]" Specifies a list of constraints. The list
may include multiple features
separated by the & character (meaning
ANDed) or the | (meaning ORed). By
default, job does not require -ext. -C
--constraint=list
10.14 LSF Equivalents of SLURM srun Options 103