From ripley@stats.ox.ac.uk  Thu Apr 26 06:57:35 2001
From: ripley@stats.ox.ac.uk (Prof Brian D Ripley)
Date: Thu, 26 Apr 2001 06:57:35 +0100 (BST)
Subject: [Rd] P-4
In-Reply-To: <4.2.2.20010425181024.00b134e0@neptuneandco.com>
Message-ID: <Pine.GSO.4.31.0104260648020.9996-100000@auk.stats>

On Wed, 25 Apr 2001, Andrew Schuh wrote:

> I just got a new machine with a Intel 1.3 P4 chip in it.  I am aware that
> many (most) software companies have not optimized their code specifically
> for the chip.  Furthermore, I have found that this machine is even slower,
> on many apps, than a 8xx P3 we have here.  I enjoy using R and was
> wondering if there are any plans to create a version that accommodates this
> chip.

Under what OS?

AFAIK the only thing one can do is to find a compiler that optimizes for
the P4, but I don't know of one, nor if it actually helps.  As far as I am
aware under both Linux and Windows the binary versions of R are not
even optimized for an i686 (Pentium Pro/II/III), but I find that under
Windows (and VC++) using the optimizations for i686 makes only negligible
differences.

-- 
Brian D. Ripley,                  ripley@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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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[Rd] P-4
Prof Brian D Ripley