[Rd] OpenBLAS in everyday R?

Peter Langfelder peter.langfelder at gmail.com
Sun Dec 17 01:03:41 CET 2017

I would be very cautious about OpenBLAS in particular...  from time to
time I get complains from users that compiled code calculations in my
WGCNA package crash or produce wrong answers with large data, and they
all come from OpenBLAS users. I am yet to reproduce any of their
crashes when using MKL and ATLAS BLAS implementations.

Just my 2 cents...


On Sat, Dec 16, 2017 at 12:28 PM, Kenny Bell <kmbell56 at gmail.com> wrote:
> Hi R-devel list,
> OpenBLAS is readily available for unix-likes:
> https://cloud.r-project.org/web/packages/gcbd/vignettes/gcbd.pdf
> However, my questions are:
> 1) Would R-devel consider using OpenBLAS for the main distribution of R for
> all platforms including Windows?
> 2) If so, would R-devel set the default multi-thread level to the number of
> (real) cores on a machine?
> My sense is there're a lot of wasted resources on laptops and personal
> desktops around the world that could be utilised by such a switch. I
> believe most unix-like users don't know about OpenBLAS and are blissfully
> ignorant of the available speed gains. It seems to be quite difficult for a
> typical Windows user to get this done today.
> Thanks heaps,
> Kenny
>         [[alternative HTML version deleted]]
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