> Le 11 janv. 2021 à 16:26, Kasper Daniel Hansen <kasperdanielhan...@gmail.com> > a écrit : > > Jean: _guessing_ this may be about parallel processing in BLAS? Does your > timing include linear algebra?
Yes it is mostly linear algebra, but the slowdown is the same in parallel processing and in single processor mode (4 times slower in both). > On Mon, Jan 11, 2021 at 2:38 PM Jean Thioulouse > <jean.thioulo...@univ-lyon1.fr> wrote: > Hi > > Both versions seem to run fine indeed, but on my Mac mini M1, the arm version > (homebrew R) is much slower than the intel version (CRAN R), which is quite > disappointing. > > The speed ratio I get is about 4 times slower for the arm version compared to > the intel version, both in single processor and parallel computing mode. > > Any idea about why I get these results ? > > Thanks, > Jean > > —- > Jean THIOULOUSE - orcid.org/0000-0001-7664-0598 > http://lbbe.univ-lyon1.fr/-Thioulouse-Jean-.html > https://www.springer.com/fr/book/9781493988488 > > > > Le 11 janv. 2021 à 10:53, Denis-Alexander Engemann > > <denis.engem...@gmail.com> a écrit : > > > > I have been using both Rosetta emulation and the homebrew builds and > > everything looks very good so far. > > > > Here are two Twitter threads on M1 benchmarks. > > > > https://twitter.com/fxcoudert/status/1342598509418176514?s=20 > > > > https://twitter.com/dngman/status/1342580260815200257?s=20 > > > > Best, > > Denis > > > > On Mon, Jan 11, 2021 at 10:11 AM Dr Eberhard W Lisse <e...@lisse.na> wrote: > >> > >> I use the homebrew R for the Intel and then install.packages(), > >> update.package() from scripts and Rstudio’s Tools->. > >> > >> I don’t have an M1 (yet) but would be interested in seeing how that works > >> on the M1. Probably this will pull the sources and hence I would be > >> grateful to read about that. > >> > >> > >> greetings, el > >> > >> — > >> Sent from Dr Lisse’s iPhone > >> On 11 Jan 2021, 10:05 +0200, Patrick Schratz <patrick.schr...@gmail.com>, > >> wrote: > >>> There is a [native arm64 big sur > >>> binary](https://github.com/Homebrew/homebrew-core/blob/8a6807be6abb44634e7d6d153348b6bba2a5ddc6/Formula/r.rb#L16) > >>> in homebrew since some days. > >>> > >>> On 10 Jan 2021, at 22:39, Gregory Coats via R-SIG-Mac wrote: > >>> > >>>> I purchased a new 13 inch Apple MacBook Pro with the M1 System on a > >>>> Chip. I understand that R is not yet available compiled for the M1 SoC > >>>> hardware, and so I am using Apple’s Rosetta 2. > >>>> However, this MacBook Pro requires Apple macOS Big Sur. From what I > >>>> see at https://mac.r-project.org/ R has not been compiled for macOS > >>>> Big Sur. Is there an executable of R for macOS Big Sur available to > >>>> download? > >>>> Greg Coats > >>>> > >>>> > >>>> [[alternative HTML version deleted]] > >>>> > >>>> _______________________________________________ > >>>> R-SIG-Mac mailing list > >>>> R-SIG-Mac@r-project.org > >>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac > >>> > >>> [[alternative HTML version deleted]] > >>> > >>> _______________________________________________ > >>> R-SIG-Mac mailing list > >>> R-SIG-Mac@r-project.org > >>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac > >> > >> [[alternative HTML version deleted]] > >> > >> _______________________________________________ > >> R-SIG-Mac mailing list > >> R-SIG-Mac@r-project.org > >> https://stat.ethz.ch/mailman/listinfo/r-sig-mac > > > > _______________________________________________ > > R-SIG-Mac mailing list > > R-SIG-Mac@r-project.org > > https://stat.ethz.ch/mailman/listinfo/r-sig-mac > > _______________________________________________ > R-SIG-Mac mailing list > R-SIG-Mac@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-mac > > > -- > Best, > Kasper _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
