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From: "Nicolò Balzarotti" <anothersms@gmail.com>
To: Leo Famulari <leo@famulari.name>
Cc: 51198@debbugs.gnu.org
Subject: [bug#51198] [PATCH] gnu: Add b2sum.
Date: Wed, 27 Oct 2021 10:44:45 +0200	[thread overview]
Message-ID: <874k92kgaq.fsf@guix.i-did-not-set--mail-host-address--so-tickle-me> (raw)
In-Reply-To: <YXiMRvAiHuTfIDU5@jasmine.lan>

Hi Leo,

Leo Famulari <leo@famulari.name> writes:

> On Wed, Oct 27, 2021 at 12:26:01AM +0200, Nicolò Balzarotti wrote:
>> (I'm on an old X200 thinkpad).  Might it be that build is not
>> deterministic (and we should disable some optimization)?
>
> As a test, I replaced march=native with march=x86-64.
>
> [...]
>
> Or maybe the package could use #:substitutable #f, since b2sum is a very
> quick build.

This blog post [fn:1] on guix-hpc address the "Pre-built binaries
vs. performance" dilemma.

I guess the easiest way is to provide a variant (b2sum-avx or something
like that) with avx enabled.  Else, I'd just go with the unoptimized
version as it happens for many other packages, but let's hear from
others.

Thanks, Nicolò

[fn:1] https://hpc.guix.info/blog/2018/01/pre-built-binaries-vs-performance/




  reply	other threads:[~2021-10-27  8:45 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-14  4:28 [bug#51198] [PATCH] gnu: Add b2sum Leo Famulari
2021-10-26 16:07 ` bug#51198: " Leo Famulari
2021-10-26 22:26 ` [bug#51198] " Nicolò Balzarotti
2021-10-26 22:53   ` Leo Famulari
2021-10-26 22:54     ` Leo Famulari
2021-10-26 23:16   ` Leo Famulari
2021-10-27  8:44     ` Nicolò Balzarotti [this message]
2021-10-27 15:38       ` Leo Famulari
2021-10-27 15:56         ` Ludovic Courtès
2021-11-03 17:32           ` Leo Famulari
2021-11-06 16:45             ` Ludovic Courtès
2021-11-27 23:36               ` Leo Famulari
2022-03-18 17:12   ` bug#51198: " Leo Famulari
2021-11-27 23:32 ` [bug#51198] [PATCH v2 1/2] build-system/gnu: Add #:local-build? parameter Leo Famulari
2021-11-27 23:32   ` [bug#51198] [PATCH v2 2/2] gnu: b2sum: Build on the local machine Leo Famulari
2021-12-01 15:34   ` [bug#51198] [PATCH] gnu: Add b2sum zimoun
2021-12-01 17:50     ` Leo Famulari

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