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From: Dave Love <fx@gnu.org>
To: guix-devel@gnu.org
Subject: Re: OpenBLAS and performance
Date: Wed, 20 Dec 2017 14:48:42 +0000	[thread overview]
Message-ID: <87h8sl78vp.fsf@albion.it.manchester.ac.uk> (raw)
In-Reply-To: 87tvwl7h4w.fsf@albion.it.manchester.ac.uk

I wrote: 

> If you do provide some sort of threaded version for Python, then as far
> as I remember it must use pthreads, not OpenMP, though you want the
> OpenMP version for other purposes, and I hadn't realized there wasn't
> one currently.

I was confused.  I see the only version of the library shipped is built
with pthreads.  I think there should be serial, pthreads, and OpenMP
versions, as for Fedora.  It may also be useful to provide the 64-bit
integer versions, like Fedora; that's useful for at least a flagship
chemistry program.

I also remembered the problems with 0.2.20.  I'll send a patch for the
wrong cache size used on some x86_64 when I get a chance.

  reply	other threads:[~2017-12-20 14:49 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-19 10:49 OpenBLAS and performance Pjotr Prins
2017-12-19 17:12 ` Ludovic Courtès
2017-12-20 11:50 ` Dave Love
2017-12-20 14:48   ` Dave Love [this message]
2017-12-20 15:06     ` Ricardo Wurmus
2017-12-22 12:24       ` Dave Love
2017-12-20 17:22     ` Pjotr Prins
2017-12-20 18:15       ` Ricardo Wurmus
2017-12-20 19:28         ` Pjotr Prins
2017-12-20 20:00           ` Ricardo Wurmus
2017-12-20 20:32             ` Pjotr Prins
2017-12-20 19:02               ` Eric Bavier
2017-12-21 16:38                 ` Dave Love
2017-12-20 23:02               ` Ricardo Wurmus
2017-12-21 10:36                 ` Pjotr Prins
2017-12-21 14:43           ` Ludovic Courtès
2017-12-22 14:35           ` Dave Love
2017-12-21 16:17         ` Dave Love
2017-12-21 16:46           ` Ricardo Wurmus
2017-12-21 14:55   ` Ludovic Courtès
2017-12-22 12:45     ` Dave Love
2017-12-22 15:10       ` Ludovic Courtès
2017-12-22 16:08         ` Pjotr Prins

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