Gentoo Archives: gentoo-dev

From: Donnie Berkholz <dberkholz@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] x32 fun pants
Date: Fri, 16 Sep 2011 13:37:17
Message-Id: 20110916133632.GD5000@comet
In Reply to: [gentoo-dev] x32 fun pants by Mike Frysinger
1 On 15:34 Thu 15 Sep , Mike Frysinger wrote:
2 > ive converted my system over to x86/amd64/x32 multilib for funs. but i can
3 > see how some people wont want all three all the time. so the question is how
4 > we want to make this available to users at the release/profile level.
5 >
6 > background: x32 is a new ABI that runs on 64bit x86_64 processors. see [1].
7 > you'll need gcc-4.7+, binutils-2.21.50+, glibc-2.15+, and linux-3.2+.
9 For anyone interested how the performance compares to amd64 in more
10 comprehensive tests, check out the slides from the Linux Plumbers
11 Conference (particularly 14-21):
15 In summary, on those benchmarks it looks like a small global win (maybe
16 5%) on integer calculations with a few huge wins of ≥25%, but a net loss
17 around 5% pretty much globally for floating-point calculations.
19 Most people probably do a lot more integer calculations unless they're
20 science geeks like me, plus it should have lower memory use, so my
21 understanding is that it probably makes sense to switch to x32 no matter
22 what you're using now (x86 or amd64).
24 Mike, would you agree?
26 --
27 Thanks,
28 Donnie
30 Donnie Berkholz
31 Council Member / Sr. Developer
32 Gentoo Linux
33 Blog:


Subject Author
Re: [gentoo-dev] x32 fun pants "Michał Górny" <mgorny@g.o>
Re: [gentoo-dev] x32 fun pants Mike Frysinger <vapier@g.o>
Re: [gentoo-dev] x32 fun pants Joshua Kinard <kumba@g.o>