[Rd] R and ATLAS and distributing across boxes

From: Adam D. I. Kramer <adik-rdevel_at_ilovebacon.org>
Date: Wed, 09 Mar 2011 14:34:23 -0800 (PST)


Hi,

         If I have a cluster of heterogenous machines, each with their own self-optimized ATLAS, do I need to compile R on each machine to tell it to take advantage of the local ATLAS? Or is it sufficient to compile R once with the appropriate --with-blas and --with-lapack flags, and then trust that, once installed on a certain box, R will look in the right place and find and use the local library? Or will I need to recompile R on each box?

         Googling around has shown me how to have R use ATLAS instead of native BLAS, but none of them note whether changing the BLAS library out from under an R binary will change the code that R executes.

Thanks in advance,
Adam D. I. Kramer



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