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