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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: |
Thu, 31 Mar 2022 15:07:49 +0200 |
User-agent: |
Evolution 3.38.3-1 |
Efraim Flashner schreef op do 31-03-2022 om 15:18 [+0300]:
> > Arun Isaac schreef op do 31-03-2022 om 12:58 [+0530]:
> > > + (("-march=native") ""))
> >
> > This is also wrong for x86 systems because it makes the build non-
> > reproducible. Also, has upstream been informed about some of the
> > compiler flags being architecture-specific?
>
> I'm pretty sure upstream is aware of it, and the -mcx16 flag. That
> whole phase doesn't need to be non-x86_64 only, upstream prefers it
> that way to get fater results
wfmash could be written to detect CPU features at runtime and there is
also --tune. Also, upstream preferring march=native does not make the
build reproducible.
> but IMO it would be fine to move it into a snippet.
It does not have to be in a snippet, it just needs to be reproducible
(so no march=native, whether on x86 or not).
Upstream seems to be aware of the non-x86
(https://github.com/ekg/wfmash/issues/125) but they do not seem to be
aware of the problems with march=native.
Greetings,
Maxime
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- [bug#54635] [PATCH 1/5] gnu: gsl: Force bootstrap when cross-compiling to riscv64-linux., (continued)
- [bug#54635] [PATCH v2 1/5] gnu: gsl: Force bootstrap when cross-compiling to riscv64-linux., Arun Isaac, 2022/03/31
- [bug#54635] [PATCH v2 3/5] gnu: atomic-queue: Run tests correctly., Arun Isaac, 2022/03/31
- [bug#54635] [PATCH v2 4/5] gnu: atomic-queue: Do not look for boost when cross-compiling., Arun Isaac, 2022/03/31
- [bug#54635] [PATCH v2 5/5] gnu: Add wfmash., Arun Isaac, 2022/03/31
- [bug#54635] [PATCH v2 5/5] gnu: Add wfmash., Maxime Devos, 2022/03/31
- [bug#54635] [PATCH v2 5/5] gnu: Add wfmash., Efraim Flashner, 2022/03/31
- [bug#54635] [PATCH v2 5/5] gnu: Add wfmash.,
Maxime Devos <=
- [bug#54635] [PATCH v2 5/5] gnu: Add wfmash., Efraim Flashner, 2022/03/31
- bug#54635: [PATCH v2 5/5] gnu: Add wfmash., Efraim Flashner, 2022/03/31
- [bug#54635] [PATCH v2 2/5] gnu: htslib: Add bzip2 and xz to inputs., Arun Isaac, 2022/03/31