compiling R with tuned BLAS

Which OS are you using (Windows, Linux (distro), Mac)? When you 
mention .so files I tend to assume you are using a Linux system.  If 
you are using ubuntu, changing the BLAS used by R is relatively 
trivial by using 'update-alternatives'.  More detail is provided at 
the following link: 
http://www.stat.cmu.edu/~nmv/2013/07/09/for-faster-r-use-openblas-instead-better-than-atlas-trivial-to-switch-to-on-ubuntu/ 
<http://www.stat.cmu.edu/%7Enmv/2013/07/09/for-faster-r-use-openblas-instead-better-than-atlas-trivial-to-switch-to-on-ubuntu/>

Charles

On Thu, May 21, 2015 at 2:19 PM, Michael Gooch <goochmi at gmail.com 
<mailto:goochmi at gmail.com>> wrote:

    I am looking at the instructions on
    http://cran.r-project.org/doc/manuals/r-patched/R-admin.html#ATLAS

    I have noticed that ATLAS produces two shared libs in addition to
    the *.a files:
    http://math-atlas.sourceforge.net/atlas_install/node22.html

    contents of the ATLAS lib directory:
    libatlas.a  libcblas.a  libf77blas.a  liblapack.a libptcblas.a
    libptf77blas.a  libsatlas.so  libtatlas.so

    The instructions do not appear to match up with the *.a files &
    *.so files as described. (it appears to want me to use shared
    libs, but the names defined are static libs, not shared libs).

    should I simply be having it link against libtatlas.so (and
    pthreads) for shared threaded atlas and libsatlas.so for shared
    sequential atlas?
    do I need shared versions of the other static libraries?

    I think the help is a bit out of date, or at least unclear as to
    what it intends of me.

    M. Gooch