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Nothing much. Use like normal x86 besides:<br>- Kernel set to Your CPU in Processor Setttings (generic x86_64 is good for all configurations).<br>- Accept keyword for "Beta"-like packages is ~amd64 not ~x86<br>- You don't have to set MMX flag, but set SSE, SSE2 and if Your CPU have it - SSE3 this will optimize floating point operations.<br>
- Enable SMP (symmetric Multiprocessing) where available - by flags.<br>- If it's multicore (I have Intel on my LAP so don't know about Your CPU) set MAKEOPTS to cores count+1.<br>- If it's multicore try to enable threads flag - this boosts performance even on single core cpus, but on multicore will make much difference.<br>
- Chceck by eselect what profile of portage you have set as default. If is not try setting some with Amd64 on path.<br>- When GCC upgrade check if "multilib" is set - this will enable You to link with 32-bit libs and 64-bit (as standard).<br>
- In kernel set ciphers and algorithms (like MD5, SHA etc) to amd64 version.<br><br>I think that's it. Everything elese should be fine.<br><br><div class="gmail_quote">2010/12/8 Dale <span dir="ltr"><<a href="mailto:rdalek1967@...">rdalek1967@...</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi,<br>
<br>
First post here. I'm usually on gentoo user. I'm in the process of building a new system which will be 64 bit. I am looking for advice. I would like people to post things that I might run into that one wouldn't expect and some things that are different from x86. I was looking at something on my old rig and noticed the USE flag smp. I didn't know about that until I ran up on it. I learned something by pure dumb luck.<br>
<br>
I'm a long time Gentoo user. Installed it at the early stages of 1.4. I also use KDE and have fluxbox installed as a backup. The processor is a AMD Phenom II X4 955 @3.2Ghz. It will start out with one 4Gb stick of ram. I plan to expand that later.<br>
<br>
What are some things that I should watch for and enable that isn't so obvious for someone new to 64 bit?<br>
<br>
Thanks.<br><font color="#888888">
<br>
Dale<br>
<br>
:-) :-)<br>
<br>
</font></blockquote></div><br><br clear="all"><br>-- <br>Mateusz Mierzwiński<br><br>Bluebox Software <a href="http://www.blueboxsoft.pl/mateusz-mierzwinski" target="_blank">http://www.blueboxsoft.pl/mateusz-mierzwinski</a><br>
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