Re: Fedora 32 System-Wide Change proposal: x86-64 micro-architecture update

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Jul 23, 2019 at 11:05:59AM +0200, Kevin Kofler wrote:
> assume. And if you ask me, we should just stick to SSE2 as the baseline. 

Ie the status quo.

> What are the big gains to be had from SSE3, SSSE3, SSE4.1, and SSE4.2? 

Each of those individually, and from a general system library 
persepective, I'd wager not a whole lot.  But in aggregate, there are a 
lot of Clear Linux benchmarks showing a sizeable bump in general purpose 
performance.

That said -- A reasonable argument can be made to bump the baseline to 
require SSE3, because all non-AMD x86_64 CPUs support it, and on the AMD 
side, anything beyond their 1st-gen single-core K8s supports it.  
(We're talking April 2005 here, versus the September 2003 introduction 
of the very first x86_64 processor)

As another data point, Windows 8.x effectively required SSE3 on 64-bit 
CPUs as the other CPU features they required (LAHF/SAHF, CMPXCHG16B, and 
NX) were only implemented together on SSE3-capable processors.

(And Steam's hardware survey shows that a full 100% of their users have 
 an SSE3-capable processor..)

 - Solomon
-- 
Solomon Peachy			       pizza at shaftnet dot org
High Springs, FL                          ^^ (email/xmpp) ^^
Quidquid latine dictum sit, altum videtur.

Attachment: signature.asc
Description: PGP signature

_______________________________________________
devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Fedora Announce]     [Fedora Users]     [Fedora Kernel]     [Fedora Testing]     [Fedora Formulas]     [Fedora PHP Devel]     [Kernel Development]     [Fedora Legacy]     [Fedora Maintainers]     [Fedora Desktop]     [PAM]     [Red Hat Development]     [Gimp]     [Yosemite News]

  Powered by Linux