List Archive: gentoo-science
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I recently submitted a question to the R-help mailing list, because I
noticed that matrix multiplication was giving me trouble (basically, that
there were some times when a result was NaN):
As it is mentioned in the end of the thread, the solution was to recompile
R against the reference blas and lapack libraries, and avoid the atlas
that I was using.
So it seems that the problem is not R-related, but atlas-related, and
linked to gentoo, I would like to share the problem with you, just in case
somebody has any clue on what is wrong with atlas.
Although I have firstly used a very aggressive cflags to compile atlas
(-Ofast), I suspected that the problem was that, but I recompiled atlas
using -O2 and the problem still presists with atlas, but is solved with
I am using atlas-3.9.23-r4, R-2.13.1 and gcc-4.6.1
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