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> Or maybe there is a totally simple way and this could take me 5 minutes!

At that paragraph I immediately thought of http://aadrake.com/command-line-tools-can-be-235x-faster-tha...

Holy shit.

> I have been in technology roles for over 17 years

I guess this is what experience gets you, huh.

Or if you know some basic performance characteristics of your machine (i.e. memory bandwidth + processor speed + number of cores) and roughly how much work you need to do (i.e. number cycles to do X), some back of the envelope calculations can often give you the same insight (i.e. "is X feasible with compute resource Y?").

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