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I'm trying to setup the capability where a user can execute:</div>
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$: sbatch <parameters> script_to_run.sh</div>
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and the end result is that a job is created on a node, and that job will execute "singularity exec <path to container> script_to_run.sh"</div>
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Also, that they could execute:</div>
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$: salloc <parameters></div>
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and would end up on a node per their parameters, and instead of a bash prompt, they have the singularity prompt because they're inside a running container.</div>
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Oddly, I ran: salloc <parameters> /usr/bin/singularity shell <path to sif> and that allocated and said the node was ready and gave me an apptainer prompt...cool! But when I asked it what hostname I was on, I was NOT on the node that it had said was ready,
I was still on the submit node. When I exit out of the apptainer shell, it ends my allocation. Sooo...it gave me the allocation and started the apptainer shell, but somehow I was still on the submit node.</div>
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As far as the job, I've done some experiments with using job_submit.lua to replace the script with one that has a singularity call in it instead, and that might hold some promise. But I'd have to write the passed-in script to a temp file or something, and
then have singularity exec that. That MIGHT work.</div>
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The results for "slurm and singularity" do not describe what I'm trying to do. The closest thing I can find is what slurm touts on their website, a leftover from Slurm 2017 talking about a spank plugin that, as near as I can figure, doesn't exist. I read
through the OCI docs on the slurm website, but it shows that using singularity with that requires all commands to have sudo. That's not going to work.</div>
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I'm running out of ideas here.</div>
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Thanks,</div>
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Rob<br>
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