Re: 4 cores and 8 threads

Top Page
Attachments:
Message as email
+ (text/plain)
Delete this message
Reply to this message
Author: Keith Smith
Date:  
To: Main PLUG discussion list
Subject: Re: 4 cores and 8 threads
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 <>
>> 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 ---------------------------------------------------
>> PLUG-discuss mailing list - To
>> subscribe, unsubscribe, or to change your mail settings:
>> http://lists.phxlinux.org/mailman/listinfo/plug-discuss [1]
>
>
> Links:
> ------
> [1]
> https://u2206659.ct.sendgrid.net/wf/click?upn=5DvWGaZUY8Sh5aRLWfQTKYiRLVzunonVk948p8WIzMe-2FXlJ9Cta8w8U9xoku9LrUSHNMJbSd3ZEwH-2BqnW2UHlA-3D-3D_6lpMB7VLnN-2Fj9-2FEErg8-2F-2BMBpb5QxlByTgv2M3fbWD9ebvC-2BWrN3h7jImK8EVWYBeRqz5uVuARR77-2FXYCoX3CyRZ-2F-2BqJUzThg-2FqaFqN9RxtdgpBGhguDbaZb0CTQQl9jvOTJtewZlDe1mrHkjqvQllVXF4pcJ-2F-2FDS3K2jeXqdbfaPYwgo-2B3xhpLFMYYBGINjiYQhbC6eHGfoETTUh6RMyUx8TTdi233xHex4Fyo2LePY-3D
>
> ---------------------------------------------------
> PLUG-discuss mailing list -
> To subscribe, unsubscribe, or to change your mail settings:
> http://lists.phxlinux.org/mailman/listinfo/plug-discuss


--
Keith Smith
---------------------------------------------------
PLUG-discuss mailing list -
To subscribe, unsubscribe, or to change your mail settings:
http://lists.phxlinux.org/mailman/listinfo/plug-discuss