[Rd] 32- / 64-bit R query

[Prof Brian Ripley]

.Machine$sizeof.pointer is 4 or 8.

On Fri, 18 Aug 2006, McGehee, Robert wrote:

> Hello,
> Is there a way to query whether R has been compiled using 32- or
> 64-bits? A certain memory-intensive simulation will need to be optimized
> differently depending on the memory constraints of the architecture such
> that it will run quickly in 64-bits, and will run within ~3GB under
> 32-bits. And as I'd like to distribute the simulation across a
> mixed-architecture cluster using the snow package, I'd like each R
> process to be optimized accordingly. 
> 
> Thanks,
> Robert
> 
> Robert McGehee
> Quantitative Analyst
> Geode Capital Management, LLC
> 53 State Street, 5th Floor | Boston, MA | 02109
> Tel: 617/392-8396    Fax:617/476-6389
> mailto:robert.mcgehee at geodecapital.com
> 
> 
> 
> > This e-mail, and any attachments hereto, are intended for ...{{dropped}}
> 
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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