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CFLAG suggestions for 32bit mode on AMD64 CPU
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Hex29A
n00b
n00b


Joined: 19 Nov 2003
Posts: 11
Location: Sweden

PostPosted: Sat Jul 23, 2005 8:51 pm    Post subject: CFLAG suggestions for 32bit mode on AMD64 CPU Reply with quote

Hi!
I want to give gentoo a shot on my main machine, wich has a amd64 cpu.

I don't want to run it in 64bit mode though.

So, my question is wich cflags i should pass to make.conf to get high performance in 32bit mode, but still a "stable" system..
info from /proc/cpuinfo:


processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 31
model name : AMD Athlon(tm) 64 Processor 3000+
stepping : 0
cpu MHz : 1801.389
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext lm 3dnowext 3dnow
bogomips : 3555.32




thanks..

./Martin
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cyrillic
Watchman
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Joined: 19 Feb 2003
Posts: 7313
Location: Groton, Massachusetts USA

PostPosted: Sat Jul 23, 2005 9:58 pm    Post subject: Re: CFLAG suggestions for 32bit mode on AMD64 CPU Reply with quote

Hex29A wrote:
I want to give gentoo a shot on my main machine, wich has a amd64 cpu.

I don't want to run it in 64bit mode though.

So treat it like an athlon-xp, and everything will work fine (only faster :wink: ).
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Hex29A
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Joined: 19 Nov 2003
Posts: 11
Location: Sweden

PostPosted: Sat Jul 23, 2005 10:06 pm    Post subject: Reply with quote

ok, I thought I only could go for like generic i686 or something..:lol: but I'll try that!
thanx a bunch! :)
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Maedhros
Bodhisattva
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Joined: 14 Apr 2004
Posts: 5511
Location: Durham, UK

PostPosted: Sun Jul 24, 2005 12:54 pm    Post subject: Reply with quote

Please see https://forums.gentoo.org/viewtopic.php?t=177670

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