Douglas Bates <bates@stat.wisc.edu> writes:
Have you tried configuring R with Goto's BLAS
http://www.cs.utexas.edu/users/kgoto/
I haven't worked with Opteron or Athlon64 computers but I understand
that Goto's BLAS are very effective on those machines. Furthermore
Goto's BLAS are (only) available as .so libraries so you don't need to
mess with creating the .so version.
I tried it, yes. Somewhat to my surprise, it seemed to be not quite as
fast as the threaded ATLAS, but I wasn't very systematic about the
benchmarking.
(and the Goto items have license issues, which get in the way for
binary distributions.)