On Thu, Sep 12, 2013 at 12:10 PM, Antoine Pitrou <solipsis@pitrou.net> wrote:
On Thu, 12 Sep 2013 20:59:46 +0200
"Giampaolo Rodola'" <g.rodola@gmail.com>
wrote:
> This is a follow up of a feature request which recently appeared on psutil
> bug tracker:
> https://code.google.com/p/psutil/issues/detail?id=427
>
> I don't know whether the proposal makes sense for psutil per-se but it
> certainly made me think about multiprocessing.cpu_count() and the fact that
> it currently returns the number of virtual CPUs (physical + logical).
>
> Given that multiple processes cannot take any advantage of hyper threading
> technology

Of course they can.  The CPU doesn't distinguish between different
kinds of "threads", they can either belong to the same process or to
different ones.

Regards

Antoine.

Antoine's claim is backed by a document written by Intel: http://software.intel.com/en-us/articles/performance-insights-to-intel-hyper-threading-technology/. Specifically, in the section "Software Use of Intel HT Technology".