[R] Compiling R on an Alpha

Thomas Lumley thomas at biostat.washington.edu
Tue Jun 20 17:56:21 CEST 2000

On Tue, 20 Jun 2000, F.Tusell wrote:

> Aside: I  am using gcc  as I  have ever done,  because I first  want a
> functional executable.  However,  I have read (in www.alphalinux.org?)
> that substantial improvements on  speed of heavily floating point code
> can be achieved on Alphas by using the Compaq C compiler (available at
> their site). If somebody has some experience with that, I would like to
> hear from him/her.

This would be a worthwhile experiment. If the Compaq compiler is superior
only for floating point there would probably not be much difference,
though.  R is not 'heavily floating point code' in most cases, as is shown
by the lack of improvement from using optimised BLAS code and the relative
performance on x86 and SPARC architectures.


Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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