> but we used to have to run farms of mac minis because we couldn't have jenkins/bamboo trigger more than one xcode test/build run at a time.

As someone who is interested in OSX testing like this - ie, not arguing with you - would it be possible to have a mac mini use virtualbox with real OSX installations running in parallel?

From what i've heard in this thread, Virtualbox/etc support OSX just fine, on OSX machines. Hypothetically, you could parallel-ize on a single machine via virtualbox, no?

I understand Apple is still making it a PITA though. Not disagreeing, just learning why you were only running a single instance per box. :)