[gentoo-user] Re: USE="mmx mmxext sse sse2 ssse3 3dnow 3dnowext"

[James <wireless@tampabay.rr.com>]

Stroller <stroller <at> stellar.eclipse.co.uk> writes:


> I'm always rather reluctant to enable any of these, being unsure  
> whether my ageing PentiumPro or Pentium 4 CPUs support such features  
> as 3DNow! (originally an AMD technology) or the advanced SSSSSSSSSE3.


I run this on dozens of amd64 laptops and 3workstations and servers
from make.conf:

USE="mmx mmxext sse sse2 sse3 3dnow 3dnowext \

no problems, great performance!

Here is something nice from that palladies dude I keep in my
.bashrc:

# USE flag settings hack by Ciaran McCreesh:
explainuseflag(){ sed -ne "s,^\([^ ]*:\)\?$1 - ,,p" $(portageq
portdir)/profiles/use.{,local.}desc; }
alias ef="explainuseflag"


ef sse3
Enable optimisations using the sse3 assmbly code
Enable SSE3 support


ef ssse3
faster floating point optimization for SSSE3 capable chips (Intel Core 2 and
later chips)


My wife just loves Palladis exercise class....
;-)


hth,

James