[R] How to set up R for Macbook Pro Intel Core Duo

[Tobias]

I just recently purchased a Macbook Pro, Intel Core Duo 2GHz, 512 MB RAM. 

After looking through several articles in this forum I found the link to the
R Mac Wiki. I am not that tech-savy but it appeared to me that this link,

http://wiki.urbanek.info/index.cgi?IntelMacR

describes how to install R on a Intel Mac Core Duo to utilise the two cores. 

I have also downloaded and installed the universal binary from the CRAN
website. My question now is whether the universal binary package already
sets up R on my Mac in such a way that allows for the utilisation of the two
cores or whether I have to go through the tutorial article of the R Wiki?

I just ran some code that took about 8 hours on my old Windows machine
(Pentium 3, 2.7 GHz, 1GB RAM) to complete on the Mac and it appears to be
roughly 50% slower. That makes me wonder, of course, whether both cores are
being utilised! 

Could someone please advice whether I should go through the Wiki article to
set up R or whether it already had been set up properly through the
universal binary package? 

Many thanks

Tobias
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