[R] Re> Illegal Instrunction

[Prof Brian Ripley]

This is a Debian issue, not an R issue.

Almost certainly you are running an ATLAS tuned on a machine other than 
your own.

ATLAS is designed to be tuned on the target machine, which is easy to do 
if you install it from the sources.  Debian provides pre-built versions, 
but these need to be matched to the actual CPU and it seems the matching 
has gone wrong for you.

(On RedHat systems I have seen precisely this when R built with an ATLAS 
on a P4 was run on a PIII, by someone who mounted the wrong file system.)

On Tue, 28 Feb 2006, David Pleydell wrote:

> OK I found the problem.
>
> locate libblas.so.3 showed there were two such files,
> one in /usr/lib/, the other in /usr/lib/atlas/
>
> removing the atlas installation cured the bug.
>
> Not sure what I should do if I later find that I need
> atlas for some reason.
>
> cheers
> David
>
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-- 
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)
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