Use apt to install the necessary packages:

    sudo apt install -y slurm-wlm slurm-wlm-doc

Load file:///usr/share/doc/slurm-wlm/html/configurator.html in a browser (or file://wsl%24/Ubuntu/usr/share/doc/slurm-wlm/html/configurator.html on WSL2), and:
1. Set your machine's hostname in `SlurmctldHost` and `NodeName`.
2. Set `CPUs` as appropriate, and optionally `Sockets`, `CoresPerSocket`, and `ThreadsPerCore`. Use command `lscpu` to find what you have.
3. Set `RealMemory` to the number of megabytes you want to allocate to Slurm jobs,
4. Set `StateSaveLocation` to `/var/spool/slurm-llnl`.
5. Set `ProctrackType` to `linuxproc` because processes are less likely to escape Slurm control on a single machine config.
6. Make sure `SelectType` is set to `Cons_res`, and set `SelectTypeParameters` to `CR_Core_Memory`.
7. Set `JobAcctGatherType` to `Linux` to gather resource use per job, and set `AccountingStorageType` to `FileTxt`.

Hit `Submit`, and save the resulting text into `/etc/slurm-llnl/slurm.conf` i.e. the configuration file referred to in `/lib/systemd/system/slurmctld.service` and `/lib/systemd/system/slurmd.service`.

Load `/etc/slurm-llnl/slurm.conf` in a text editor, uncomment `DefMemPerCPU`, and set it to `8192` or whatever number of megabytes you want each job to request if not explicitly requested using `--mem` during job submission. [Read the docs](https://slurm.schedmd.com/slurm.conf.html) and edit other defaults as you see fit.

Create `/var/spool/slurm-llnl` and `/var/log/slurm_jobacct.log`, then set ownership appropriately:

    sudo mkdir -p /var/spool/slurm-llnl
    sudo touch /var/log/slurm_jobacct.log
    sudo chown slurm:slurm /var/spool/slurm-llnl /var/log/slurm_jobacct.log

Install `mailutils` so that Slurm won't complain about `/bin/mail` missing:

    sudo apt install -y mailutils

Make sure munge is installed and running, and a `munge.key` was created with user-only read-only permissions, owned by `munge:munge`:

    sudo service munge start
    sudo ls -l /etc/munge/munge.key

Start services `slurmctld` and `slurmd`:

    sudo service slurmd start
    sudo service slurmctld start