How to find number of bits used in address aliasing by the cpu?

Question

I am referring to this question and the top voted answer :-

Why are elementwise additions much faster in separate loops than in a combined loop?

My question is, is there an easy way of determining the number of bits (call it N) that the specific cpu uses for address aliasing for load/store?

Answer 1

At the OS level: no. I'm not aware of any standard OS APIs (including anything in Linux or Win32) that give you any user-space visibility to CPU cache.

However, Intel provides some great tools for low-level performance analysis and optimization. For example,

• Intel Performance Counter: http://software.intel.com/en-us/articles/intel-performance-counter-monitor/