Mac or Windows...?

2 messages · Derrick J -Rick- Bates, Simon Urbanek

Fri, Nov 10, 2006 9:41 AM #

Not results from a MacBook Pro (Intel)

	and very limited testing results

	but a PowerMac Quad G5 (2.5 GHz)

	took about twice as long to run one program

	as a Dell WS 670 Quad Xeon (2.8 GHz)

	Your Mileage May/Will Vary

At 2006-11-10 08:22 -0800, Carlos GUERRA wrote:

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  Derrick J. (Rick) Bates              | mailto:DJ.Rick.Bates at PNL.gov
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Simon Urbanek

Fri, Nov 10, 2006 10:11 AM #

On Nov 10, 2006, at 12:41 PM, Derrick J -Rick- Bates wrote:

Can you be more specific, please? The results vary a lot depending on  
the vecLib you use, which version of the OS etc. because Apple was  
improving vecLib support substantially. The same is true of Windows -  
depending on your BLAS the results will vary a lot. Comparing G5 vs  
MacBook is quite irrelevant because they are entire different  
architectures and Windows doesn't run on G5. If you have some  
specific examples, please let me know so we can test it. Note that R  
2.4.0 on Mac OS X allows you to switch between various BLAS back-ends  
very easily, so you can choose the back-end that suits your  
application most.

Cheers,
Simon