[LEDE-DEV] MT7621: 2 or 4 CPUs?

[Gaetano Catalli]

Thanks Daniel,

I also found it in the datasheet:

MIPS MT Application Specific Extension (ASE)
  - Support for 2 Virtual Processing Elements (VPEs) per CORE
  - One Thread Context (TC) per VPE

Regards,
Gaetano

On Fri, Jul 15, 2016 at 11:07 AM, Daniel Golle <daniel at makrotopia.org> wrote:
> Hi Gaetano,
>
> On Fri, Jul 15, 2016 at 11:01:12AM +0200, Gaetano Catalli wrote:
>> Hello,
>>
>> I'm a bit confused about the number of CPUs of MT7621 SoC.
>> From the MT7621 datasheet:
>>
>> "The MT7621 router-on-a-chip includes a 880 MHz MIPS 1004Kc CPU dual-core ..."
>>
>> So why does /proc/cpuinfo show 4 cpus?
>
> MIPS MT is similar to Intel's HyperThreading on x86.
>
> https://imgtec.com/mips/architectures/multi-threading/
>
> ... "MT can make a single processor core appear to an SMP operating
> system like two separate cores."
>
>
> Cheers
>
> Daniel
>
>>
>> Regards.
>>
>> --
>> gaetano catalli
>>
>> _______________________________________________
>> Lede-dev mailing list
>> Lede-dev at lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/lede-dev



-- 
gaetano catalli