JJB, good idea, I didn't think of it, I have now moved this one and the recipes repo to
https://github.com/R-macos Cheers, Simon > On 2/05/2020, at 4:32 AM, Balamuta, James Joseph <balam...@illinois.edu> > wrote: > > Simon, > > Thank you for the official instructions on using OpenMP with R 4.0.0! > > Also, thanks for making the source behind mac.r-project.org available on > GitHub! > https://github.com/s-u/R-mac-dev > > Would you consider creating an organization to house all repositories related > to R for macOS in a manner similar to R for Windows? > > e.g. https://github.com/r-windows > > Best, > > JJB > > On 4/30/20, 8:10 PM, "R-SIG-Mac on behalf of Simon Urbanek" > <r-sig-mac-boun...@r-project.org on behalf of simon.urba...@r-project.org> > wrote: > > I have now created a page about this: > > http://mac.r-project.org/openmp > > which also provides libomp binaries for all recent versions of Xcode (and > more). > > Important note: this is about Xcode - it is NOT about using Homebrew tools > nor the custom compilers we used before R 4.0.0. Both of the latter are not > suitable for use with R 4.0.0 binaries. > > Please give it a shot. Thanks for those participating in the discussion. > > Cheers, > Simon > > > >> On 1/05/2020, at 2:23 AM, Wright, Erik Scott <eswri...@pitt.edu> wrote: >> >> Hi Kevin et al., >> >> The setup you suggested did not work for me, but I was able to get OpenMP to >> work on Mac (10.13) with R v4.0 packages. Here's what I did: >> >> (1) After installing Homebrew, ran >> brew install libomp >> # Note it is also possible to install from OpenMP Source code: >> https://releases.llvm.org/download.html#10.0.0 >> (2) Determined the install path with >> brew --prefix libomp >> # In my case /usr/local/opt/libomp >> (3) Added lines to ~/.R/Makevars >> CC=/usr/local/clang4/bin/clang -fopenmp -I/usr/local/opt/libomp/include >> LDFLAGS=-L/usr/local/opt/libomp/lib >> >> I imagine the process is similar for C++ code by setting CXX. Now >> parallelization for C code with OpenMP is working again on Mac. >> >> As always, I am thankful to the R community for helping problem solve. >> >> I wish more direction along these lines could be added to mac.r-project.org >> >> Erik >> >> >>> On Apr 29, 2020, at 1:51 AM, Dmitriy Selivanov >>> <selivanov.dmit...@gmail.com> wrote: >>> >>> Thanks, Kevin, I can confirm suggested setup works fine so far. Thank you! >>> >>> I understand it, is that there's >>> no guarantee that this will work properly (or continue to work >>> properly) as the Apple toolchain continues to be updated -- e.g. a new >>> version of macOS / Xcode could install a version of Apple Clang that >>> is then incompatible with the version of libomp currently in use. In >>> such a case, I suspect one would need to find and reinstall libomp. >>> >>> Thats understandable. >>> >>> On Sat, Apr 25, 2020 at 8:09 PM Kevin Ushey <kevinus...@gmail.com> wrote: >>> The following works for me on macOS 10.15.4 using Apple Clang + libomp >>> from LLVM 10 (via Homebrew). >>> >>> Install libomp from Homebrew with: >>> >>> brew install libomp >>> >>> Then, put the following in ~/.R/Makevars >>> >>> CPPFLAGS += -I/usr/local/opt/libomp/include -Xclang -fopenmp >>> LDFLAGS += -L/usr/local/opt/libomp/lib -lomp >>> >>> Then R will automatically enable + use OpenMP as appropriate when >>> installing packages from sources. >>> >>> The main danger of this approach, as I understand it, is that there's >>> no guarantee that this will work properly (or continue to work >>> properly) as the Apple toolchain continues to be updated -- e.g. a new >>> version of macOS / Xcode could install a version of Apple Clang that >>> is then incompatible with the version of libomp currently in use. In >>> such a case, I suspect one would need to find and reinstall libomp. >>> >>> In theory, this could be alleviated by ensuring all users download and >>> use the same version of Xcode as is being used by the macOS build >>> machine (Xcode 10.1), but in practice users will likely just be using >>> the "default" set of command line tools that comes with their version >>> of macOS. >>> >>> Cunningham's law will hopefully ensure someone else will chime in if >>> I've got something wrong :-) >>> >>> Best, >>> Kevin >>> >>> On Sat, Apr 25, 2020 at 8:29 AM Wright, Erik Scott <eswri...@pitt.edu> >>> wrote: >>>> >>>> I second this request. Dropping OpenMP support in R v4.0 on Mac is >>>> unfortunate. My R package is highly parallelized via OpenMP, and many of >>>> my end-users take advantage of the excellent speedups. It would be much >>>> appreciated if user-level instructions could be provided for how to enable >>>> OpenMP support on the Mac. >>>> >>>> Thanks, >>>> Erik >>>> >>>> >>>>> On Apr 23, 2020, at 7:08 AM, Dmitriy Selivanov >>>>> <selivanov.dmit...@gmail.com> wrote: >>>>> >>>>> Hi Simon, >>>>> >>>>> Just wanted follow up on this topic. >>>>> >>>>> It would be very helpful if you can provide some guide on >>>>> https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmac.r-project.org%2F&data=02%7C01%7Ceswright%40pitt.edu%7C65097590dea4453ab8cf08d7e776b868%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1%7C0%7C637232369415901734&sdata=qlhXuEubgD6PNmkbD%2BWQy5OI9X%2BGjxSYHMNjA%2BQHZzI%3D&reserved=0<https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmac.r-project.org%2F&data=02%7C01%7Ceswright%40pitt.edu%7C65097590dea4453ab8cf08d7e776b868%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1%7C0%7C637232369415911728&sdata=5XR5LJuAKu4%2B3%2FUHsWVPMlyXTLY87P6OF%2FP%2FTZt1W8Y%3D&reserved=0> >>>>> for those users >>>>> (advanced?) and developers who wants to be able to use OpenMP on mac. From >>>>> what I've understood from this mail thread the easiest way is to install R >>>>> from homebrew as it is built with non-standard Apple toolchain. >>>>> Apart from that you've mentioned you may consider to bundle binary iomp >>>>> with R installation, but "it would be on the package author to make sure >>>>> that the way the package operates is compatible with that binary". Could >>>>> you please elaborate on that? >>>>> >>>>> I believe I'm not alone who would like to be able to use OpenMP on mac and >>>>> "official" guidance would be very helpful. >>>>> >>>>> -- >>>>> Regards >>>>> Dmitriy Selivanov >>>>> >>>>> [[alternative HTML version deleted]] >>>>> >>>>> _______________________________________________ >>>>> R-SIG-Mac mailing list >>>>> R-SIG-Mac@r-project.org >>>>> https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstat.ethz.ch%2Fmailman%2Flistinfo%2Fr-sig-mac&data=02%7C01%7Ceswright%40pitt.edu%7C65097590dea4453ab8cf08d7e776b868%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1%7C0%7C637232369415911728&sdata=yAu4MKX2Ka5yEaoq51byWJSkbL%2FpO1HvtUsI%2BQXmtJQ%3D&reserved=0 >>>> >>>> _______________________________________________ >>>> R-SIG-Mac mailing list >>>> R-SIG-Mac@r-project.org >>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac >>> >>> >>> -- >>> Regards >>> Dmitriy Selivanov >> > > _______________________________________________ > 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