[R] R for Windows 32-bit mode versus 64-bit mode

Prof Brian Ripley ripley at stats.ox.ac.uk
Thu Feb 7 08:55:04 CET 2013

On 06/02/2013 22:47, Roy Mendelssohn - NOAA Federal wrote:
> Hi All:
> We are developing (actually updating) a piece of code that runs in
> R.
Due to some limitations of some the libraries we use, at the present
time we would be limited to the 32-bit version of R on Windows. Does
anyone have a feel (or even real knowledge) if most people these days
run R on Windows in 32-bit or 64-bit mode? This would affect some
development decisions.

'Most people' is maybe not the right question.

A very high proportion of serious users run 64-bit Windows and 64-bit R 
on that. But there are still many old computer labs in Universities all 
over the world used by very many students, and companies still using XP 
(which is 32-bit only: the so-called 64-bit XP was internally Server 2003).

OTOH, the standard install has both 32- and 64-bit versions of R on 
64-bit Windows so almost all users would have the option to start 32-bit R.

As an aside, the Mac situation is changing: OS X has been a 64-bit OS 
for ca 5 years now and it is likely that CRAN binaries for 3.0.0 will be 
64-bit only there.

> Thanks
> -Roy M.
> **********************
> "The contents of this message do not reflect any position of the U.S. Government or NOAA."
> **********************
> Roy Mendelssohn
> Supervisory Operations Research Analyst
> Environmental Research Division
> Southwest Fisheries Science Center
> 1352 Lighthouse Avenue
> Pacific Grove, CA 93950-2097
> e-mail: Roy.Mendelssohn at noaa.gov (Note new e-mail address)
> voice: (831)-648-9029
> fax: (831)-648-8440
> www: http://www.pfeg.noaa.gov/
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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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