[R] 64-bit R on OS X/G5?

Prof Brian Ripley ripley at stats.ox.ac.uk
Wed Jun 16 13:15:56 CEST 2004

R works on 64-bit platforms and has for quite a while, currently I know of 
people using machines with 16Gb RAM on 64-bit platforms (Alpha, Sparc, 

Do you have a full 64-bit compiler and runtime for MacOS X?  If so `all'
you need to do is to run compile under it.  One quote I picked up was

	macos X has 64 bit support with gcc 3.3 and a g5

which if correct suggests this is possible.

On Wed, 16 Jun 2004, Anders Sjögren wrote:

> Hi!
> Does anyone know if there is a working 64-bit version of R for MacOs X 
> on G5? If so, is there a memory limit anyway or could I theroetically 
> use almost 8 GB in one session?

There is of course a memory limit but it far exceeds 8GB.  There is a 
limit on the length of vectors still (2^31 - 1) and a few other similar 

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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