I don't understand your paragraph on Kubernetes. Say you have 1000 machines with 4 TiB each, and you want to schedule processes that will cumulatively allocate 4 EiB. How would you do this without letting Kubernetes handle the scheduling?

Once Kubernetes decides which processes should run on each machine, it allocates separate cgroups to each process group, which it uses for enforcing CPU and RAM resource limits. You can see this by examining the cgroupfs control filesystem. How would you propose improving this?