4 cores and 8 threads

[Keith Smith]

On 2016-09-06 16:29, David Schwartz wrote:
> AFAIK, the “cores” are 64-bit ALUs that can split into 32-bit
> pairs to run 32-bit code.
> 
> So an i7 has four x 64-bit cores that also work as 8×32-bit CPUs.
> 
> Threads are an OS construct, unless you want to refer to them as
> “real” vs. “virtual”, in which case you’d have up to four
> 64-bit threads or eight 32-bit threads.
> 
> I run VMWare, and I’ve never really bothered to figure out how it
> does its CPU mapping. I think I’ve given it two cores and 2GB of RAM
> and it does fine running Win 7.
> 
> (My base system is a Mac with a 2.8 GHz i7, 16 GB of RAM, and the
> latest OS X.)

I read and understood everything you said until i read the above line 
and I forgot everything except "My base system is a Mac with a 2.8 GHz 
i7, 16 GB of RAM, and the latest OS X.".

That is a serious system. Is that the Mac Book Pro 15.4 with 512MB SSD?




> 
> -David Schwartz
> 
>> On Sep 6, 2016, at 3:53 PM, Keith Smith <techlists at phpcoderusa.com>
>> wrote:
>> 
>> Hi,
>> 
>> If an Intel CPU has 4 cores and 8 threads will it look like 8 cores
>> to VirtualBox when assigning resources to a guest?
>> 
>> If so is there a way to determine which is a tread and which is
>> actually a core?
>> 
>> Thanks!! Keith ---------------------------------------------------
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-- 
Keith Smith