That will be a great idea. I don’t know much of programming and I get confused with so many technical details.
Manuel Spínola On Fri, May 1, 2020 at 10:32 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 > -- *Manuel Spínola, Ph.D.* Instituto Internacional en Conservación y Manejo de Vida Silvestre Universidad Nacional Apartado 1350-3000 Heredia COSTA RICA mspin...@una.cr <mspin...@una.ac.cr> mspinol...@gmail.com Teléfono: (506) 8706 - 4662 Personal website: Lobito de río <https://sites.google.com/site/lobitoderio/> Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/> [[alternative HTML version deleted]] _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
