On Mon, Oct 30, 2017 at 12:45 PM, Cohn, Robert S <robert.s.c...@intel.com> wrote: > I think the thing that is missing is a simple way for end users on windows to > replace blas/lapack libraries with MKL-a package that you install that puts > the libraries in the right place. > > Microsoft provides something for their distro, but we don't have the > equivalent if you get R from cran. >
Dr. Ei-ji Nakama has some compiled GotoBLAS Rblas DLLs on his site [1], but they are rather old now. I've toyed with the idea of doing something similar for OpenBLAS—which requires tricking R into thinking it's ATLAS [2]—and hosting at least a Sandy Bridge and a dynamic version. I'm not sure how the licenses and copyrights would interact though. Also, that only works for the BLAS. Using an optimized LAPACK is even more difficult. On Unix-likes, the manual does not recommend it but it's allowed as an option in the configure [3]. For OpenBLAS (and ATLAS for that matter), even though one can build an optimized LAPACK, there is no way to access the build of the LAPACK on Windows through Mkrules.local, and R_HOME/src/modules/lapack/README makes it seem to be rather difficult, if not impossible. I believe the MKL includes a specialized LAPACK; I do not know if this is compiled into M$ R, though. Thanks, Avi [1] https://prs.ism.ac.jp/~nakama/SurviveGotoBLAS2/binary/windows/ [2] https://www.avrahamadler.com/r-tips/build-openblas-for-windows-r64/ [3] https://cran.r-project.org/doc/manuals/r-release/R-admin.html#LAPACK ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
