[R-SIG-Mac] OpenMP on CRAN (Simon Urbanek)

Wright, Erik Scott ESWRIGHT @end|ng |rom p|tt@edu
Sat Apr 25 17:29:14 CEST 2020

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.


> On Apr 23, 2020, at 7:08 AM, Dmitriy Selivanov <selivanov.dmitriy using 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]]
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