First, if you write process-concurrent code in Elixir/Erlang, it will run on all the cores in your machine. It's automatically locally scalable. The number of p

First, if you write process-concurrent code in Elixir/Erlang, it will run on all the cores in your machine. It's automatically locally scalable. The number of processes should range from some small multiple of the no. of cores (say, 10x cores), up to 100k - 1m on a big memory multicore machine. Second, as the other comments say, Elixir/Erlang have very transparent built-in ways to address other nodes, and the programs will scale as expected: more cpus v. network data distribution cost. So good for small tasks that require lots of compute. The native clustering will run to a few dozen nodes over a trusted LAN. But soon, you will want some layer managing the cluster, try Swarm: https://github.com/bitwalker/swarm https://github.com/bitwalker/swarm