Running Barnes Hut example

I downloaded https://github.com/scala-blitz/ onto a cluster and am trying to run BarnesHut.scala (https://github.com/scala-blitz/scala-blitz/blob/master/src/test/scala/org/scala/optimized/test/examples/BarnesHut.scala). I’m trying to run it from the command line. What commands do I need to run and from what directory in this path? I’m very new to scala and am having a hard time understanding the package and compilation systems. Thanks!