It seems like many of the multi-threaded BLASes have some sort of fundamental problem preventing use in the way Juan suggests:
- Dirk's vignette states that ATLAS "fixes the number of cores used at compile-time and cannot vary this setting at run-time", so any user-friendly implementation for R would have to compile ATLAS for 1-16 threads to allow the user to switch at run-time. This might dramatically affect install times. - MKL seems like it's been outright rejected in the past based on not being "free-enough". - OpenBLAS causes crashes. Has anyone tried ExBLAS for use with R? On Sun, Dec 17, 2017 at 1:03 PM, Peter Langfelder < peter.langfel...@gmail.com> wrote: > I would be very cautious about OpenBLAS in particular... from time to > time I get complains from users that compiled code calculations in my > WGCNA package crash or produce wrong answers with large data, and they > all come from OpenBLAS users. I am yet to reproduce any of their > crashes when using MKL and ATLAS BLAS implementations. > > Just my 2 cents... > > Peter > > On Sat, Dec 16, 2017 at 12:28 PM, Kenny Bell <kmbel...@gmail.com> wrote: > > Hi R-devel list, > > > > OpenBLAS is readily available for unix-likes: > > > > https://cloud.r-project.org/web/packages/gcbd/vignettes/gcbd.pdf > > > > However, my questions are: > > > > 1) Would R-devel consider using OpenBLAS for the main distribution of R > for > > all platforms including Windows? > > 2) If so, would R-devel set the default multi-thread level to the number > of > > (real) cores on a machine? > > > > My sense is there're a lot of wasted resources on laptops and personal > > desktops around the world that could be utilised by such a switch. I > > believe most unix-like users don't know about OpenBLAS and are blissfully > > ignorant of the available speed gains. It seems to be quite difficult > for a > > typical Windows user to get this done today. > > > > Thanks heaps, > > Kenny > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-devel@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-devel > > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
