[R] Compiling R on an Alpha

[Thomas Lumley]

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

Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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