From colin.a.cunningham@intel.com  Thu Oct 25 02:41:35 2001
From: colin.a.cunningham@intel.com (Cunningham, Colin A)
Date: Wed, 24 Oct 2001 18:41:35 -0700
Subject: R Performance on P-4 RE: [Rd] P-4
Message-ID: <65D5A07B5098D511BDDA0002A508E64F1418B1@orsmsx110.jf.intel.com>

Is this still an issue to this community?  If so, and results, I may pick
this up.  Intel does have C++ and Fortran compilers.

You might see a compiler among the list under the links
http://cedar.intel.com/cgi-bin/ids.dll/topic.jsp?catCode=BON.
Evaluation licenses are available at 
http://developer.intel.com/software/products/compilers/

If they are promising, perhaps binaries could at least be built using Intel
compilers.  

But first, are there any R tasks/workloads that we might comparably
benchmark?

Colin



-----Original Message-----
From: Prof Brian D Ripley [mailto:ripley@stats.ox.ac.uk]
Sent: Wednesday, April 25, 2001 10:58 PM
To: Andrew Schuh
Cc: r-devel@stat.math.ethz.ch
Subject: Re: [Rd] P-4


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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R Performance on P-4 RE: [Rd] P-4
Cunningham, Colin A