[R] libblas.so.3

Prof Brian Ripley ripley at stats.ox.ac.uk
Wed Jul 23 09:40:31 CEST 2003

On Tue, 22 Jul 2003, Francisco J Molina wrote:

> I am using linux rehat 9
> When I try to run R I get
> usr/lib/R/bin/R.bin: error while loading shared libraries: libblas.so.3: cannot open shared object file: No such file or directory
> ( because I removed it )
> I thought of compiling R from source but I have read:
> "R currently uses only level 1 blas and the most significant atlas
> optimizations are for level 3 (and level 2 to some extent). 
> The problem with using ATLAS is that its installation process does
> not build the shared libraries by default and the whole build process is
> rather complicated."
> This is from a 3 years old message but I guess that the state of the art now
> is similar.

It's not.  R now makes heavy use of level 3 BLAS.  On RH9 ATLAS should 
build out of the box (with static libraries), and be well worth using.

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

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