As a productive tool, I can't think of a use at all. For learning distributed computing, I think has some advantages over just running all of the nodes on a si

As a productive tool, I can't think of a use at all. For learning distributed computing, I think has some advantages over just running all of the nodes on a single powerful computer. It means you can't hide from doing things scalably -- i.e. network costs between your processes are real; if your load isn't well-distributed across your nodes the OS scheduler can't save you; etc.