[felixgallo]

erlang is not competitive in math calculation performance, and fault tolerance is not as important when your program has a relatively short, defined lifetime and well-understood inputs and outputs. As a message router and underlying infrastructure for a cluster it'd probably work pretty well, but then you'd have an impedance mismatch and operational concerns between the routing infrastructure and the calculation infrastructure.

[tormeh]

Erlang is like Python in that you normally use C for the single-thread numerical stuff.