[Numpy-discussion] [SciPy-Dev] RFC: comments to BLAS committee from numpy/scipy devs

[Nathaniel Smith]

On Tue, Jan 9, 2018 at 3:40 AM, Ilhan Polat <ilhanpolat at gmail.com> wrote:
> I couldn't find an item to place this but I think ilaenv and also calling
> the function twice (one with lwork=-1 and reading the optimal block size and
> the call the function again properly with lwork=<result>) in LAPACK needs to
> be gotten rid of.
>
> That's a major annoyance during the wrapping of LAPACK routines for SciPy.
>
> I don't know if this is realistic but the values ilaenv needed can be
> computed once (or again if hardware is changed) at the install and can be
> read off by the routines.

Unfortunately I think this effort is just to revise BLAS, not LAPACK.
Maybe you should try starting a conversation with the LAPACK
developers though – I don't know much about how they work but maybe
they'd be interested in feedback.

-n

-- 
Nathaniel J. Smith -- https://vorpus.org