I have a dual socket Xeon E5522 2.26GHZ machine (with hyperthreading disabled) running ubuntu server on linux kernel 3.0 supporting NUMA. The architecture layout is 4 physical c
You can also check you make your memory placement and access in the right way with a new tool to profile NUMA applications and now open-source for Linux : NUMAPROF : https://memtt.github.io/numaprof/.