I have a dual Zeon processor that Linux lists as 4 processors (there are two physical ones and each has two hyperthread units. I am assigning threads to individual processors and I want them on different physical processors. Are processor 0 and 1 on the same physical processor and 2 and 3 on the other processor or are 0 and 1 on two different physical processors and 3 and 4 their hyperthread pairs?
I am upgrading my system from a dual Pentium 3 where this was not an issue. If worse comes to worse I can disable hyperthreading, but I would like to clarify this if possible.
Thanks in advance,
Marco ________________________ Marc Reinig UCO/Lick Observatory Laboratory for Adaptive Optics