On Wed, 8 May 2019 at 18:00, Ralf Stubner <ralf.stub...@daqana.com> wrote: > > On 08.05.19 09:34, Iñaki Ucar wrote: > > On Wed, 8 May 2019 at 04:52, Peter Langfelder > > <peter.langfel...@gmail.com> wrote: > >> > >> (CCing the R-devel list, maybe someone will have a better answer.) > >> > >> To be honest, I don't know how to. I wasn't able to configure R to use > >> OpenBLAS using the configure script and options on my Linux Fedora system. > >> I configure it without external BLAS, then replace the libRblas.dylib (.so > >> in my case) with a link to the OpenBLAS dynamic link library. > > > > R on Fedora uses openblas by default since Fedora 23. In fact, there's > > a specific package, openblas-Rblas, that provides libRblas.so. > > AFAIK a single-threaded OpenBLAS is used.
Of course it is the serial version. It wouldn't be a good policy to ship a threaded shared library by default. > When compiling R from source > on a CentOS system I have used the configure option > '--with-blas="-lopenblasp"' to link with the pthread version of OpenBLAS. CentOS uses the reference BLAS by default instead. It's a long story. But both CentOS and Fedora configure R with --enable-BLAS-shlib, so you don't need to recompile it to use an optimized version. Iñaki ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
