Comment by throwaway892238

> When I ran into this problem, I was just trying to run all of Bluecore's unit tests on my Mac laptop. We use nose's multiprocess mode, which uses Python's multiprocessing module to utilize multiple CPUs. Unfortunately, the tests hung, even though they passed on our Linux test server.

There will never be a time at which you can reliably expect any program developed on one system to "just work" on a different system. This person wasted a lot of time tracking down what was essentially a portability bug. Did they need this to be portable? Was this time well spent generating business value?

Pick one system for development through production, stick to it. There will be portability bugs hiding in your code, but you will never have to fix them. You will be upset for a minute that you can't use a different system, but you will get over it.