[R-SIG-Mac]timing R and R and R and R

[Jan de Leeuw]

It may also be ATLAS that causes some of the 40% speed increase.

On Tuesday, November 13, 2001, at 11:34 AM, Thomas Lumley wrote:

> On Tue, 13 Nov 2001, David A Richmond wrote:
>
>> 	I am moving away from os9 and doing as much as I possibly can in
>> osX. I am going to abandon 9 completely as soon as it is feasible for 
>> me
>> to do everything I need to do in X. What I would like to see most is a
>> Cocoa version of R. It is my understanding that Carbon is nice for
>> cross-OS compatibility, but ultimately Cocoa is the API of choice. 
>> Would I
>> be correct in assuming that performance differences Jan found would 
>> also
>> be seen between a Carbon app and a Cocoa app?
>
> I don't think we know. It's a reasonable guess, but there could be user
> interface overhead.
>
> The difference is suprisingly large given that (IIRC) R runs with almost
> the same speed under Windows and Linux on the same hardware.
>
>
> 	-thomas
>
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===
Jan de Leeuw; Professor and Chair, UCLA Department of Statistics
US mail: 8142 Math Sciences Bldg, Box 951554, Los Angeles, CA 90095-1554
phone (310)-825-9550;  fax (310)-206-5658;  email: deleeuw@stat.ucla.edu
                  www: http://www.stat.ucla.edu/~deleeuw
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