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.
I don't have any interest in using a proprietary BLAS when a perfectly good free alternative exists. If we just care about performance, swapping out the reference BLAS for openBLAS is pretty simple apparently: - Download pre-compiled openblas from https://sourceforge.net/projects/openblas/files/ (windows binaries currently available for 2.19 but not 2.20) - Unzip and copy libopenblas.dll to C:\Program Files\R\R-3.4.x\bin\x64 and rename it "Rblas.dll" - Download the mingw dll's (e.g., from https://sourceforge.net/projects/openblas/files/v0.2.15/mingw64_dll.zip/download), unzip and copy all the dll's to C:\Program Files\R\R-3.4.x\bin\x64 Best, Ista > > > On 29 October 2017 at 22:01, Kenny Bell wrote: > > | User here: incorporating Intel's MKL, as MRO does, would be a very welcome > > | addition. > > | > > | I was an MRO user before and it improved my experience with medium data > > | immensely. > > | > > | They did, however, leave behind bugs here and there, especially related to > > | development with Rcpp, so I switched back to vanilla R. > > > > With all due respect: You may miss something. MKL has always worked with > 'Base R'. > > > > As a point of reference and comparison, I set up a benchmarking and > > comparison package _well over half a decade ago_ and while it never get fully > > finished to the point of a submitted paper the vignette still stands---and > > demonstrates that _dropping in MKL is a one-line operation_. > > > > And always has been. There may have been some license arbitrage: Intel was > > an early investor in Revo, so MKL was pushed hard. With GotoBLAS and later > > OpenBLAS I cared less, but IIRC the license of MKL is a little simpler for > > "mere use" now. > > > > See https://cloud.r-project.org/web/packages/gcbd/vignettes/gcbd.pdf for > more. > > > > Hth, Dirk > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
