Running Swift (Parallel Scripting Language) Scripts on OSX

I tried Googling this, but I am not able to find anything, sorry if this is a silly question.

But I was talking to this company that uses Swift for the purposes of scientific computing. So I was trying to go through this tutorial, but when I run "swift -version" or "swift p1.swift", I think Apple's Swift runs.

I think behind the scenes, there's a symbolic link between the command "swift" and Apple's Swift language, but how do I break this and make it run using the parallel scripting language?