Re: Are all cores unlocked?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



James Wilkinson wrote:
> Michael Miles wrote:
>    
>> I can't wait to see the Bulldozer series in action ( 16 cores
>> Hyperthreaded) yeah baby..........
>>      
> Unfortunately, Bulldozer doesn’t do conventional SMT (which is what
> Intel usually¹ means by hyperthreading). It has two integer cores
> sharing a wide floating point engine and level 2 cache. This combination
> is what AMD call a “module”, but they will be selling it as two cores.
>
> So a 16 core Bulldozer will have 16 hardware threads.
>
> A module takes more power and area than a traditional core with
> hyperthreading, but you should get more performance out of it, too.
>
> Sorry,
>
> James.
>
> ¹ Hyperthreading is an Intel trademark, and, as such, means precisely
> what Intel wants it to mean at the moment. This can change (it means
> something different for the Itanium).
>
>    
Thank's for the clear up. My question is with Hyperthreading that is if 
each core does double duty so to speak by looking after two threads 
would it not do basically the same work as one core full bore on one thread.
Is there a speed difference (faster, slower)

It seems to me that two threads time share one core. Thus making the 
work load the same as if one core was doing one task but at twice the speed

It is confusing why they would have Hyperthreading there.
An i7 920 with 4 cores does the same amount of work as the same chip 
with 8 cores showing with Hyperthreading active.

Michael
-- 
users mailing list
users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines


[Index of Archives]     [Older Fedora Users]     [Fedora Announce]     [Fedora Package Announce]     [EPEL Announce]     [EPEL Devel]     [Fedora Magazine]     [Fedora Summer Coding]     [Fedora Laptop]     [Fedora Cloud]     [Fedora Advisory Board]     [Fedora Education]     [Fedora Security]     [Fedora Scitech]     [Fedora Robotics]     [Fedora Infrastructure]     [Fedora Websites]     [Anaconda Devel]     [Fedora Devel Java]     [Fedora Desktop]     [Fedora Fonts]     [Fedora Marketing]     [Fedora Management Tools]     [Fedora Mentors]     [Fedora Package Review]     [Fedora R Devel]     [Fedora PHP Devel]     [Kickstart]     [Fedora Music]     [Fedora Packaging]     [Fedora SELinux]     [Fedora Legal]     [Fedora Kernel]     [Fedora OCaml]     [Coolkey]     [Virtualization Tools]     [ET Management Tools]     [Yum Users]     [Yosemite News]     [Gnome Users]     [KDE Users]     [Fedora Art]     [Fedora Docs]     [Fedora Sparc]     [Libvirt Users]     [Fedora ARM]

  Powered by Linux