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Hmm, maybe a Raspberry PI could be easier and more reliable replacement to virtual machines?

(I love Vagrant/Virtualbox but sometimes, after putting the laptop to sleep, it stops working and I have to reboot).

They're not that fast. A single thread build of my python/c project (pillow) takes ~ 15 seconds on a vm, ~ 30 on an ancient core duo laptop, and ... still waiting on the raspberry. edit: 5:15. So 25 times slower.

I did an analysis of Mathematica benchmarks on the Raspberry Pi and found it to be 15x slower at best and much slower when there are CPU specific optimizations:

http://adereth.github.io/blog/2014/01/06/benchmarking-mathem...

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