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Re: [Xen-devel] Question about hyper-threading of domains

To: xen-devel@xxxxxxxxxxxxxxxxxxx, Lars Roland <lroland@xxxxxxxxx>
Subject: Re: [Xen-devel] Question about hyper-threading of domains
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Fri, 29 Apr 2005 23:58:39 +0100
Cc: Jacob Gorm Hansen <jacobg@xxxxxxx>
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> > 1) You don't have SMT (luckily, I have a bunch of machines like that
> > back home ;-)). Do the recent Opterons and Itaniums have SMT btw?
> No neither the latest Opterons nor the Itaniums have explicit SMT.

I don't think AMD has much interest in SMT for the foreseeable future - 
they're jumping straight to multicore.  Intel doesn't bother with HT on 
anything but the Pentium 4 because its pipeline is so much longer than 
anything else...

And the thought of implementing an SMT Itanium really scares me :-) (although 
I don't doubt they do consider it an option)


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