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Subject: |
[PATCH 0/5] Add wfmash |
Date: |
Wed, 30 Mar 2022 14:49:13 +0530 |
This patchset adds wfmash, and ensures that, in addition to x86_64, it also
cross-compiles to riscv64.
Arun Isaac (5):
gnu: gsl: Force bootstrap when cross-compiling to riscv64-linux.
gnu: htslib: Add bzip2 and xz to inputs.
gnu: atomic-queue: Run tests correctly.
gnu: atomic-queue: Do not depend on boost when cross-compiling.
gnu: Add wfmash.
gnu/packages/bioinformatics.scm | 55 +++++++++++++++++++++++++++++++--
gnu/packages/cpp.scm | 26 +++++++++++++---
gnu/packages/maths.scm | 15 ++++++++-
3 files changed, 88 insertions(+), 8 deletions(-)
--
2.34.0
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--- Begin Message ---
Subject: |
Re: [PATCH v2 5/5] gnu: Add wfmash. |
Date: |
Thu, 31 Mar 2022 16:31:28 +0300 |
On Thu, Mar 31, 2022 at 03:07:49PM +0200, Maxime Devos wrote:
> 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).
I suppose not, but the -mcx16 should be in the snippet, since it adds
compiler flags which only work on some architectures. And while we're at
it we can do the -march=native one too.
> 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.
>
I've pushed these patches with a few tweaks and an additional patch to
run a test suite based on the github workflow in the repository. The
entire check phase takes ~2 minutes on my pinebook pro, so aarch64
doesn't seem to need to skip some tests like riscv64 does.
--
Efraim Flashner <efraim@flashner.co.il> אפרים פלשנר
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