Re: LAPACK vs. OpenBLAS

[Eric Brown]

Ludovic Courtès <ludovic.courtes@inria.fr> writes:

> Hi Eric,
>
> Eric Brown <ecbrown@ericcbrown.com> skribis:
>
>> There are scenarios where reference BLAS is more stable and/or
>> reproducible than optimized BLAS libraries.  Sometimes its lack of
>> knowledge of OpenBLAS and/or a numerical issue.
>>
>> (cf. GNU R's discussion of which BLAS to use.)
>
> Do you have a pointer to that discussion?
>
> Are there other cases where netlib BLAS is considered more appropriate
> than OpenBLAS because it’s more numerically stable?
>
> Thanks for your feedback,
> Ludo’.

Also:

* More controversially: consider 64-bit addressing.  It is depressing to
  hit 32-bit memory limits on large machines which ought to accomodate
  larger problems. (e.g. -fdefault-integer-8, ILP64)