GNU bug report logs - #54635
[PATCH 0/5] Add wfmash

Previous Next

Full log

View this message in rfc822 format

From: Maxime Devos <maximedevos <at> telenet.be>
To: Arun Isaac <arunisaac <at> systemreboot.net>, Efraim Flashner <efraim <at> flashner.co.il>
Cc: 54635-done <at> debbugs.gnu.org
Subject: [bug#54635] [PATCH v2 5/5] gnu: Add wfmash.
Date: Fri, 01 Apr 2022 11:39:16 +0200

[Message part 1 (text/plain, inline)]

Arun Isaac schreef op vr 01-04-2022 om 13:10 [+0530]:
> wfmash's speed is one of the critical features it brings to the
> table. We might have rendered the package more or less unusable by
> disabling CPU optimizations.
> 
> I could try talking to upstream about detecting and using CPU features
> at runtime. But, I don't know too much about the topic. Any quick links
> I can share with them?

For the concept, maybe
<https://hpc.guix.info/blog/2022/01/tuning-packages-for-a-cpu-micro-architecture/>
, which is about combining high performance with reproducibility using
the (Guix-specific) --tune package transformation.  To implement run-
time detection, the following could be useful:

* Guix article:
<https://hpc.guix.info/blog/2018/01/pre-built-binaries-vs-performance/>
* LWN article: <https://lwn.net/Articles/691932/>.

Greetings,
Maxime.

[signature.asc (application/pgp-signature, inline)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.