Slurm is a popular workload manager used in HPC and AI. It came out of LLNL.
Slinky
Slinky is a set of tools that make it easier to run both Kubernetes and Slurm jobs on a single cluster.
Slurm Operator
Slurm Operator allows Kubernetes to add and remove nodes to Slurm. I think the point is that, if you already have a Kubernetes cluster, you can instantiate Slurm within it for users who prefer submitting jobs through Slurm instead of Kubernetes.
Slurm Bridge
Slurm Bridge is a “Slinky project” that allows Slurm and Kubernetes to co-manage compute nodes. It does this by submitting placeholder jobs that reserve nodes in Slurm, then letting Kubernetes launch pods across those nodes.