Re: Detecting CPUs and cores

Daniel Dyer wrote:
What's slightly less helpful is that my Windows PC at work returns 2 from availableProcessors() despite the fact that it is single-core, albeit with Intel's Hyper-Threading.

That's not Window's nor Java's fault. The HT processor is electrically equivalent to two CPUs to the rest of the system. So are multi-core CPUs.

Here's the $64,000 question - what is the value of knowing the number of dies on which the cores reside? A "core" /is/ a CPU as far as any practical use of it goes; same for the two virtual cores seen in a HyperThreaded processor. You program them in every respect as if they were completely separate; the fact that they happen to share some real estate couldn't be less relevant.

A difference that makes no difference is no difference.

--
Lew
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