Simon, I have never heard about this before. That is worth full info! I will take a closer look to the library soon! That is indeed a better solution than using the gcc-4.8.1.
Thanks Simon On Sep 13, 2013, at 3:12 PM, Simon Urbanek <simon.urba...@r-project.org> wrote: > > On Sep 13, 2013, at 6:16 AM, Simon Zehnder wrote: > >> Dear Brian, >> >> if it is able to test the compilation of the quartz device by calling >> quartz() in R - this works. Calling xcodebuild -version gives me: Xcode >> 4.6.3 and clang --version gives me LLVM 3.2svn indeed. My prime target was >> to be able to use OpenMP 3.1 which is actually only available (freely) in >> gcc >= 4.7. > > That's not true - Intel OpenMP RTL (http://www.openmprtl.org/ ) is free (BSD > license), goes even up to OpenMP 4.0 features and has much better > performance. GOMP has terrible performance on OS X (one of the two reasons > why we disable it in the binaries), so if you care about OMP you probably > don't want to use gcc anyway (or plug out GOMP for the Intel one). > > >> Is there a possibility to install, check and reinstall all CRAN packages in >> R? >> > > Install is easy - you feed install.packages() with package list from > available.packages() and you can even use Ncpus. Check is annoying since > there is no equivalent R function (AFAIK). All of us have their own functions > they use for this. But what's more complicated is that you'll need to install > all dependent libraries in the system - and there are a lot of them. > > Cheers, > Simon > > > >> Best >> >> Simon >> >> >> On Sep 13, 2013, at 10:52 AM, Prof Brian Ripley <rip...@stats.ox.ac.uk> >> wrote: >> >>> On 13/09/2013 07:52, Anirban MUKHERJEE wrote: >>>> Hi Simon, >>>> >>>> On a related note, there has been progress on openmp in llvm/clang: >>>> >>>> http://www.phoronix.com/scan.php?page=news_item&px=MTQ0NjQ >>>> >>>> http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-August/065169.html >>>> >>>> http://clang-omp.github.io/ >>>> >>>> That might be an alternative route to consider if needed. Clang (I have >>>> not openmp/clang) usually builds easily on Mac OS. >>> >>> We know (I believe it has been mentioned here before). But please remember >>> that only the Apple clang is easy to use (does your self-build compile the >>> quartz device? -- mine did not), and Apple lags a long way behind. The >>> current Xcode version says it is '3.2svn' but lacks even 3.1 features such >>> as AddressSanitizer. We will see what Xcode 5 brings when it is released. >>> >>> I don't think people appreciated Simon's comments about the stability >>> needed. If you can check all of CRAN with no more than 10 issues with gcc >>> 4.7 or 4.8, then let us know. That is about where we are with llvm-gcc 4.2 >>> and clang 3.2- from Xcode 4.6.3. When I tried 4.7.x prior to R 3.0.0 I had >>> over 50 failures (and CRAN is reqularly checked with 4.7.x on other >>> platforms). >>> >>> And we are only in that good a state because a lot of (literally) thankless >>> work has been done to get CRAN/BioC packages to compile with clang. >>> >>> -- >>> Brian D. Ripley, rip...@stats.ox.ac.uk >>> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ >>> University of Oxford, Tel: +44 1865 272861 (self) >>> 1 South Parks Road, +44 1865 272866 (PA) >>> Oxford OX1 3TG, UK Fax: +44 1865 272595 >>> >>> _______________________________________________ >>> 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
