[Numpy-discussion] Accelerate or OpenBLAS for numpy / scipy wheels?

[Charles R Harris]

On Mon, Jun 27, 2016 at 9:46 PM, Matthew Brett <matthew.brett at gmail.com>
wrote:

> Hi,
>
> I just succeeded in getting an automated dual arch build of numpy and
> scipy, using OpenBLAS.  See the last three build jobs in these two
> build matrices:
>
> https://travis-ci.org/matthew-brett/numpy-wheels/builds/140388119
> https://travis-ci.org/matthew-brett/scipy-wheels/builds/140684673
>
> Tests are passing on 32 and 64-bit.
>
> I didn't upload these to the usual Rackspace container at
> wheels.scipy.org to avoid confusion.
>
> So, I guess the question now is - should we switch to shipping
> OpenBLAS wheels for the next release of numpy and scipy?  Or should we
> stick with the Accelerate framework that comes with OSX?
>
> In favor of the Accelerate build : faster to build, it's what we've
> been doing thus far.
>
> In favor of OpenBLAS build : allows us to commit to one BLAS / LAPACK
> library cross platform, when we have the Windows builds working.
> Faster to fix bugs with good support from main developer.  No
> multiprocessing crashes for Python 2.7.
>

I'm still a bit nervous about OpenBLAS, see
https://github.com/scipy/scipy/issues/6286. That was with version 0.2.18,
which is pretty recent.

Chuck
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