Re: [Algorithms] Timing problems

[Jon W. <jw...@gm...>]

Mat Noguchi wrote:
>
> Only if the threads never context switched while on that core. I 
> forget if context switches flush the CPU caches or not.
>

In general they don't have to, because caches will generally be on 
physical (not logical) addresses. However, whatever thread you switch to 
is likely (but not guaranteed) to be cache thirsty enough that, when you 
get switched back in, the majority of your data is no longer there.


Sincerely,

jw