I am "the friend" - and after reading everything I will be performing some more tests to help provide a more accurate representation of the servers I have ( 2 x R815's each with 64GB of RAM and 4 x Opteron  6276 running Ubuntu 16).

Quick question, as I am learning my way around "server CPU" mining and relatively new to this (been GPU mining for years). How do I test all 4 CPU's together, in addition to a single and dual for comparison? (Just posting the commands is fine, but I prefer to also learn what they do and why/how to use them).  Thanks!