HP XC System 3.x Software - Manual (Page 99)

$ export SLURM_JOBID=150
$ export SLURM_NPROCS=4
$ mpirun -tv srun additional parameters as needed
After you finish with this interactive allocation, exit the /bin/bash process in the first terminal; this ends
the LSF job.
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-HPC 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-HPC Equivalents of SLURM srun Options
Table 10-2 describes the srun options and lists their LSF-HPC equivalents.
Table 10-2 LSF-HPC Equivalents of SLURM srun Options
LSF-HPC 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
10.14 LSF-HPC Equivalents of SLURM srun Options 99