[R-SIG-Mac] How to determine if a Mac is Nehalem-based

[Steven McKinney]

Wikipedia didn't tell me about "sysctl hw.model", and I had to 
correct their misspelled "Gainestown" (Gainstown on Intel sites,
and in log reports on my Mac).

I prefer to check on Simon :)  

Thank you very much for your clear explanations.

Steven McKinney

________________________________________
From: Simon Urbanek [simon.urbanek at r-project.org]
Sent: October 20, 2010 6:28 PM
To: Steven McKinney
Cc: R-SIG-Mac at stat.math.ethz.ch
Subject: Re: [R-SIG-Mac] How to determine if a Mac is Nehalem-based

On Oct 20, 2010, at 5:55 PM, Steven McKinney wrote:

> Hi Mac Gurus,
>
> I have been searching the web trying to find out how to determine if my Mac is "Nehalem-based".  I have not been able to find any discussion about how to determine this, beyond something such as "Macs built in early 2009" or similarly vague statements.
>

It's not vague at all, it's MacPro4,1 and MacPro5,1 models (you can use use "sysctl hw.model" to find out what you have). If in doubt, check on Wikipedia ;)

The latter uses the Nehalem architecture but I don't have a specimen of those so I can't confirm that the bug still holds true for those.

Cheers,
Simon




> Does anyone know where I can find a description of which Intel chips in a Mac
> constitute "Nehalem-based" and what R or Mac-OS scripts, commands etc
> will yield information on the CPU chip in my Mac so I can make this determination?
>
>> From "About this Mac" I get the following information, but I'm unclear on
> what if anything in such output will reliably show whether my Mac is
> Nehalem-based.
>
> Hardware Overview:
>
>  Model Name:  Mac Pro
>  Model Identifier:    MacPro4,1
>  Processor Name:      Quad-Core Intel Xeon
>  Processor Speed:     2.66 GHz
>  Number Of Processors:        2
>  Total Number Of Cores:       8
>  L2 Cache (per core): 256 KB
>  L3 Cache (per processor):    8 MB
>  Memory:      32 GB
>  Processor Interconnect Speed:        6.4 GT/s
>  Boot ROM Version:    MP41.0081.B08
>  SMC Version (system):        1.39f5
>  SMC Version (processor tray):        1.39f5
>  Serial Number (system):      H00230C320H
>  Serial Number (processor tray):      C070183004XDCVHAX
>  Hardware UUID:       482F1E2A-2588-5FA3-80AE-11BE11615B02
>
> Any information appreciated
>
> Steven McKinney
>
> Statistician
> Molecular Oncology and Breast Cancer Program
> British Columbia Cancer Research Centre
>
> _______________________________________________
> R-SIG-Mac mailing list
> R-SIG-Mac at stat.math.ethz.ch
> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>
>