Re: OpenBLAS and performance

[Ricardo Wurmus]

Pjotr Prins <address@hidden> writes:

> On Wed, Dec 20, 2017 at 09:00:46PM +0100, Ricardo Wurmus wrote:
>> > I do think we need to default to a conservative openblas for general
>> > use. Question is how we make it fly on dedicated hardware.
>>
>> Have you tried preloading the special library with LD_PRELOAD?
>
> It is not a question of what I can do. It is a question of how we give
> other people the benefit of optimized libs in an elegant way.

I’m asking because preloading different BLAS libraries is a thing.  If
this works then we can ask people to just pick their favourite BLAS
library variant and preload it.  We don’t need to build all combinations
of library variants and applications.

> I think channels actually should make a difference if we don't cater
> in default Guix for such use cases.

I think channels (and really: alternative build farms) do make sense for
tuned builds.

--
Ricardo

GPG: BCA6 89B6 3655 3801 C3C6  2150 197A 5888 235F ACAC
https://elephly.net