[R-pkg-devel] [[openmx-dev]] [[openmx-dev]] Re: [[openmx-dev]] Re: openmp

[Mark van der Loo]

If you want to distributed such binaries, I would suggest using the 'drat'
package to set up your own repo. I'm using it for beta versions of my
packages and I find it very useful and easy to use. The latest version of
'drat' also supports binaries.

Or, vote with your feet and switch to Linux ;-).

/M



Op ma 24 aug. 2015 om 23:44 schreef Michael Neale <mcneale at mac.com>:

> Yes, well, we have support for our own parallel build of an OS X version
> of R package using OpenMP and gcc, but I don’t suppose that CRAN
> maintainers would be interested in also supporting OS X in this fashion.
> Supplying binaries seems the only option unless clang developers decide to
> support OpenMP, which seems unlikely since Apple wants to promote its own
> parallel computing tools.
>
> Michael Neale
> mcneale at mac.com
>
>
>
> On Aug 24, 2015, at 3:38 PM, Mark van der Loo <mark.vanderloo at gmail.com>
> wrote:
>
>
> At least on linux, CRAN builds using openMP. I got a valgrind report once
> [shame on me btw] showing that 9 (out of 10) threads were running examples.
>
>
> So my best guess is that it will do the same for Windows since it also has
> openMP support according to WRE[1].  I wouldn't know why not, except for
> the reasons Dirk already mentioned. It will not do this for OS X since WRE
> states clearly that
>
> OS X nowadays uses clang, and the Apple builds currently have no OpenMP
> support.
>
> so if nobody has openMP support on OS X, for sure CRAN doesn't have it.
> /M
>
> [1]https://cran.r-project.org/doc/manuals/R-exts.html#OpenMP-support
>
>
>
> Op ma 24 aug. 2015 om 19:04 schreef Joshua N Pritikin <jpritikin at pobox.com
> >:
>
>> On Mon, Aug 24, 2015 at 09:57:05AM -0700, Zhian Kamvar wrote:
>> > The way several packages have implemented OpenMP is to wrap it in
>> > pre-compiler statements i.e.:
>> >
>> > // Include openMP if the compiler supports it
>> > #ifdef _OPENMP
>> > #include <omp.h>
>> > #endif
>> >
>> > This way, all compilers can build the code and those that have OpenMP
>> > (even modified versions of clang: https://clang-omp.github.io/) can do
>> > so in a parallel fashion.
>>
>> Yes, of course, but you're missing the point of my enquiry. My question
>> is whether it is possible for CRAN to build and distribute openmp
>> enabled binaries.
>>
>> --
>> Joshua N. Pritikin
>> Department of Psychology
>> University of Virginia
>> 485 McCormick Rd, Gilmer Hall Room 102
>> Charlottesville, VA 22904
>> http://people.virginia.edu/~jnp3bc
>>
>> ______________________________________________
>> R-package-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-package-devel
>>
>
>

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