[hpsdr] OT but relates to Intel Atom

[Philip Covington]

On Tue, Feb 24, 2009 at 6:38 AM, Chris Smith <chris at vspl.co.uk> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi
>
> I recently bought a D945GCLF2 board i.e. an Intel Atom with a view to using
> it in a dedicated HPSDR set-up.
>
> Simply as a test, I installed Linux Fedora 10 x86_64. When I log in and run
> the System Monitor, to my surprise, I see that the system thinks it has 4
> CPUs.
>
> I have a separate system which has an Intel Core 2 Quad 2.4GHz which I can
> boot into Fedora 10 x86_64 or WinXP Home. While in F10 I can see 4 CPUs but
> was expecting that as it is a "Quad".
>
> I thought the Atom was only a Core 2 Dual processor so why can F10 see 4
> CPUs? I was expecting to see only 2 CPUs.
>
> Puzzled...
>
> 73
> Chris G4NUX
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It has two cores and each core is hyperthreaded: 2x2 = 4

<http://en.wikipedia.org/wiki/Hyper-threading>

"A processor with hyper-threading enabled is treated by the operating
system as two processors instead of one. This means that only one
processor is physically present but the operating system sees two
virtual processors, and shares the workload between them. "

Regards,
--
Phil Covington
Software Radio Laboratory LLC
Columbus, Ohio
http://www.srl-llc.com
---------------------------------------------------------------------------------------------------------
QS1R SDR Receiver Support Group: http://groups.yahoo.com/group/qs1r
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-- 
Phil Covington
Software Radio Laboratory LLC
Columbus, Ohio
http://www.srl-llc.com
---------------------------------------------------------------------------------------------------------
QS1R SDR Receiver Support Group: http://groups.yahoo.com/group/qs1r
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