[Numpy-discussion] Disallow Accelerate as a LAPACK backend for NumPy

[Ilhan Polat]

We have a wiki page with all the details on scipy repo for the rationale of
why we wanted to drop it. There is no need to discuss further about the
situation of Accelerate.

On Fri, Nov 15, 2019, 15:41 Ralf Gommers <ralf.gommers at gmail.com> wrote:

>
>
> On Fri, Nov 15, 2019 at 5:27 AM Matti Picus <matti.picus at gmail.com> wrote:
>
>>     On Tue, Nov 12, 2019 at 12:41 AM Matti Picus <matti.picus at gmail.com>
>>     wrote:
>>
>>     Apple has dropped support for Accelerate. It has bugs that have not
>> been
>>     fixed, and is closed source so we cannot fix them ourselves. We have
>>     been getting a handful of reports from users who end up building NumPy
>>     on macOS, and inadvertently link to Accelerate, then end up with wrong
>>     linalg results. In PR 14880https://github.com/numpy/numpy/pull/14880
>> I
>>     propose to disallow finding it when building NumPy. At this time it
>> will
>>     remain in distutils as one of the backends to support users, but how
>> do
>>     people feel about a future PR to totally remove it?
>>
>> Someone pointed out that Apple has not officially dropped support as far
>> as it can be determined. Sorry for the bad information. However, I still
>> stand by the "has bugs that have not been fixed, and is closed source". An
>> alternative to dropping automatic support for it would be to find a channel
>> for engaging with Apple to report and fix the bugs.
>>
>
> That's been tried, repeatedly. I would suggest not to spend time on that.
> Apple knows, they have just decided it's not important to them.
>
> Spending time on contributing to either OpenBLAS or BLIS/libFLAME seems
> like a more useful activity.
>
> Cheers,
> Ralf
>
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