From ripley at stats.ox.ac.uk  Thu Jul  3 13:50:43 2008
From: ripley at stats.ox.ac.uk (Prof Brian Ripley)
Date: Thu, 3 Jul 2008 12:50:43 +0100 (BST)
Subject: [Rd] --enable-BLAS-shlib conflict with --with-lapack in
 configure?
In-Reply-To: <s3sod5fjj1b.fsf@slagelg.uio.no>
References: <s3s7ic3l4y5.fsf@slagelg.uio.no>
	<alpine.LFD.1.10.0807031043320.11148@gannet.stats.ox.ac.uk>
	<s3sod5fjj1b.fsf@slagelg.uio.no>
Message-ID: <alpine.LFD.1.10.0807031248350.14214@gannet.stats.ox.ac.uk>

On Thu, 3 Jul 2008, Bj?rn-Helge Mevik wrote:

> Prof Brian Ripley <ripley at stats.ox.ac.uk> writes:
>
>> This is intentional.
>
> Ok.
>
>> Please note what the R-admin manual says about
>> --with-lapack, including 'definitely *not* recommended'
>
> Oh.  I have always understood that as referring to --with-lapack, not
> --with-lapack="-L/something...".

It applies to both.

>> If you are concerned about performance you definitely do not want to use
>> shared R, not a shared BLAS.
>
> I'm sorry, I don't quite follow you here.  Do you mean not create a shared R
> and not create a shared BLAS, or was there a "not" too many?

Yes, create neither.  Using shared objects has a noticeable performance 
overhead.

>
> -- 
> Bj?rn-Helge Mevik
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>

-- 
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


[Rd] --enable-BLAS-shlib conflict with --with-lapack in configure?
Prof Brian Ripley