From help-octave-request at bevo dot che dot wisc dot edu Sun Aug 12 21:04:08 2001
Subject: Re: Linking ATLAS with Octave
From: teg at redhat dot com (Trond Eivind =?iso-8859-1?q?Glomsr=F8d?=)
To: Przemek Klosowski <przemek at jazz dot ncnr dot nist dot gov>
Cc: help-octave at bevo dot che dot wisc dot edu
Date: 12 Aug 2001 22:03:53 -0400

Przemek Klosowski <przemek at jazz dot ncnr dot nist dot gov> writes:

>    > Compiling Atlas is said to be somewhat tricky.
> 
>    It's not tricky, but it will take a long time and it will be very
>    optimized for an exact configuration.
> 
>    I'd love for a shared, non-optimized version to be available... thus
>    we could ship a version working everywhere, and the local sysadmin
>    could recompile it for his machines, optimized for them if needed.
> 
> Rather than one non-optimized Atlas, I think it'd be better to do what
> both Matlab and Dirk/Debian do: provide several libs, appropriate for
> major platform choices, with run-time selection of the default one,
> overridable by environment/cmdline. My suggestion for the libraries
> would be:
> 	Athlon w/o 3DNow
> 	PII
> 	PPro
> 	PIII
> 	P4 with SIMD, yeay
> 	Athlon with 3DNow

Too many.

> I wonder how Debian set up BLAS libs for dynamic linking; I think the
> default is a static link.

BLAS? I made a patch years ago make it create a dynamic library -
nowadays that patch is even part of the rpm you can find on netlib.
It's very simplistic, though... libtoolizing would be better.


-- 
Trond Eivind Glomsrød
Red Hat, Inc.



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