4 cores and 8 threads

[David Schwartz]

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 x 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.)

-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
> ---------------------------------------------------
> PLUG-discuss mailing list - PLUG-discuss at lists.phxlinux.org
> To subscribe, unsubscribe, or to change your mail settings:
> https://u2206659.ct.sendgrid.net/wf/click?upn=5DvWGaZUY8Sh5aRLWfQTKYiRLVzunonVk948p8WIzMe-2FXlJ9Cta8w8U9xoku9LrUSHNMJbSd3ZEwH-2BqnW2UHlA-3D-3D_6lpMB7VLnN-2Fj9-2FEErg8-2F-2BMBpb5QxlByTgv2M3fbWD9ebvC-2BWrN3h7jImK8EVWYBeRqz5uVuARR77-2FXYCoX3CyWnSRDbo6sgYilwtrtpV-2F25ymJE7lv7CS4lxJEV4-2BWraI4FGH-2BcHYMPOJzRVV8V87PPr0MWvm2IZEUjrUAl9ydfyIXjPgzkHZan0qArt11fLhWLUFKe8VZZGDf01qKYciZZqdn1drAInR6ccIdFpbdI-3D

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.phxlinux.org/pipermail/plug-discuss/attachments/20160906/b4551544/attachment.html>