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[bug#54635] [PATCH v2 5/5] gnu: Add wfmash.
From: |
Maxime Devos |
Subject: |
[bug#54635] [PATCH v2 5/5] gnu: Add wfmash. |
Date: |
Fri, 01 Apr 2022 11:39:16 +0200 |
User-agent: |
Evolution 3.38.3-1 |
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.
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