[gentoo-user] How-to AMD Sempron 3300+

[gentoo-user] How-to AMD Sempron 3300+

[Daniel Iliev]

Hi, list!

I just upgraded from Athlon xp 1700+ to Sempron 3300+ and of course I
have some questions. ;-)

I'm not sure which is the least problematic way to recompile my gentoo
in way that the software would be able to utilize the 64bit extensions
and the new instruction sets of the CPU. Will changing the CHOST and the
CFLAGS followed by
"emerge -e world" be enough ?

My second question is:
AFAIK AMD Sempron 3300+ has "sse3" but my cpuinfo doesn't show it. Is
this normal?


 cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 44
model name      : AMD Sempron(tm) Processor 3300+
stepping        : 2
cpu MHz         : 2009.055
cache size      : 128 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 fxsr_opt
lm 3dnowext 3dnow up pni lahf_lm ts fid vid ttp tm stc
bogomips        : 4022.65
 

-- 
Best regards,
Daniel


-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] How-to AMD Sempron 3300+

[Richard Fish]

On 9/20/06, Daniel Iliev <danny@ilievnet.com> wrote:
> Hi, list!
>
> I just upgraded from Athlon xp 1700+ to Sempron 3300+ and of course I
> have some questions. ;-)
>
> I'm not sure which is the least problematic way to recompile my gentoo
> in way that the software would be able to utilize the 64bit extensions
> and the new instruction sets of the CPU. Will changing the CHOST and the
> CFLAGS followed by
> "emerge -e world" be enough ?

No, not even close.  If you want to change from i*86 to the amd64
arch, you must do a re-install.

-Richard
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] How-to AMD Sempron 3300+

[Gian Domeni Calgeer]

Am Donnerstag, 21. September 2006 07:08 schrieb Daniel Iliev:
> AFAIK AMD Sempron 3300+ has "sse3" but my cpuinfo doesn't show it. Is
> this normal?
>
>
>  cat /proc/cpuinfo
<snip>
> 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 fxsr_opt
> lm 3dnowext 3dnow up pni lahf_lm ts fid vid ttp tm stc

Hi

I can't tell you if this is normal, but sse3 isn't shown in my /proc/cpuinfo 
either (neither is it in Gentoo nor was it in Debian before I switched to 
Gentoo) (I have a Sempron 2800+). In some Benchmark program under W****** XP 
(I don't remeber which one) it was stated that my Processor has SSE3, so I 
guess it's a bug in the linux kernel. 
Gian
-- 
gentoo-user@gentoo.org mailing list

[gentoo-user] Re: How-to AMD Sempron 3300+

[Peter]

On Thu, 21 Sep 2006 08:08:22 +0300, Daniel Iliev wrote:

snip...
> I'm not sure which is the least problematic way to recompile my gentoo
> in way that the software would be able to utilize the 64bit extensions
> and the new instruction sets of the CPU. Will changing the CHOST and the
> CFLAGS followed by

don't do that.

snip...

Don't change anything. That's my advice. Enjoy the addition 32bit speed. 

-- 
Peter
+++++
Do not reply to this email, it is a spam trap and not monitored.
I can be reached via this list, or via 
jabber: pete4abw at jabber.org
ICQ: 73676357

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] How-to AMD Sempron 3300+

[Matteo Pillon]

Hi,

On Thu, Sep 21, 2006 at 01:08:30PM +0200, Gian Domeni Calgeer wrote:
> I can't tell you if this is normal, but sse3 isn't shown in my /proc/cpuinfo 
> either (neither is it in Gentoo nor was it in Debian before I switched to 
> Gentoo) (I have a Sempron 2800+). In some Benchmark program under W****** XP 
> (I don't remeber which one) it was stated that my Processor has SSE3, so I 
> guess it's a bug in the linux kernel. 

They aren't named sse3 in /proc/cpuinfo, they are 'pni' [1].
I think they aren't named sse3 because they also include
hyperthreading-specific instructions (not sure about this, I don't
have Intel CPUs with sse3 to show evidences of this).

Bye.


[1] http://en.wikipedia.org/wiki/Prescott_New_Instructions

PS: you know why Intel named its processor with the highest TDP ever,
'Prescott'? Just look here: http://en.wikipedia.org/wiki/James_Prescott_Joule ;-).

-- 
 * Pillon Matteo
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] How-to AMD Sempron 3300+

[Gian Domeni Calgeer]

Am Donnerstag, 21. September 2006 14:41 schrieb Matteo Pillon:
> They aren't named sse3 in /proc/cpuinfo, they are 'pni' [1].
> I think they aren't named sse3 because they also include
> hyperthreading-specific instructions (not sure about this, I don't
> have Intel CPUs with sse3 to show evidences of this).

Ah, I didn't know. I should have known I should never say something is a bug 
unless I'm absolutely shure. 

Gian
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] How-to AMD Sempron 3300+

[Daniel Iliev]

Matteo Pillon wrote:
> Hi,
>
> On Thu, Sep 21, 2006 at 01:08:30PM +0200, Gian Domeni Calgeer wrote:
>   
>> I can't tell you if this is normal, but sse3 isn't shown in my /proc/cpuinfo 
>> either (neither is it in Gentoo nor was it in Debian before I switched to 
>> Gentoo) (I have a Sempron 2800+). In some Benchmark program under W****** XP 
>> (I don't remeber which one) it was stated that my Processor has SSE3, so I 
>> guess it's a bug in the linux kernel. 
>>     
>
> They aren't named sse3 in /proc/cpuinfo, they are 'pni' [1].
> I think they aren't named sse3 because they also include
> hyperthreading-specific instructions (not sure about this, I don't
> have Intel CPUs with sse3 to show evidences of this).
>
> Bye.
>
>
> [1] http://en.wikipedia.org/wiki/Prescott_New_Instructions
>
> PS: you know why Intel named its processor with the highest TDP ever,
> 'Prescott'? Just look here: http://en.wikipedia.org/wiki/James_Prescott_Joule ;-).
>
>   
After some google digging I found "PNI = Prescott New Instructions = SSE3"
Sempron 3300+ has PNI

-- 
Best regards,
Daniel


-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Re: How-to AMD Sempron 3300+

[Daniel Iliev]

Peter wrote:
> On Thu, 21 Sep 2006 08:08:22 +0300, Daniel Iliev wrote:
>
> snip...
>   
>> I'm not sure which is the least problematic way to recompile my gentoo
>> in way that the software would be able to utilize the 64bit extensions
>> and the new instruction sets of the CPU. Will changing the CHOST and the
>> CFLAGS followed by
>>     
>
> don't do that.
>
> snip...
>
> Don't change anything. That's my advice. Enjoy the addition 32bit speed. 
>
>   

You are right - now I'm really enjoying the speed improvement between
Athlon XP 1700+ and Sempron 3300+
BUT as far as I know myself I'll try to reach the limits. I opened this
thread in hope that the migration would be easy and I'll need just
several tips & tricks from you guys, but the more I read, the more
scared I get.

I learned that first of all I need a "x86_64" kernel. For this purpose I
need a cross-compiling environment which I could not get following
Vapier's "http://dev.gentoo.org/~vapier/CROSS-COMPILE-HOWTO" - it seems
to be outdated. My second try was to boot from Gentoo's official
install-amd64-minimal-2006.1.iso
<http://gentoo.itdnet.net/gentoo/releases/amd64/current/installcd/install-amd64-minimal-2006.1.iso>,
but I couldn't mount my existing XFS which resides on stripe raid.

In other words I need to read a lot more before asking questions on this
subject here .
Thanks for your answers and sorry for bothering you guys.

-- 
Best regards,
Daniel


-- 
gentoo-user@gentoo.org mailing list