From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1Qm5D8-0000Dz-SU for garchives@archives.gentoo.org; Wed, 27 Jul 2011 14:35:47 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 600A721C0E6; Wed, 27 Jul 2011 14:35:30 +0000 (UTC) Received: from mail-yx0-f181.google.com (mail-yx0-f181.google.com [209.85.213.181]) by pigeon.gentoo.org (Postfix) with ESMTP id BDCC121C2B3 for ; Wed, 27 Jul 2011 14:34:27 +0000 (UTC) Received: by yxi13 with SMTP id 13so1052517yxi.40 for ; Wed, 27 Jul 2011 07:34:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=g3JCmmnjh/g0PoB7HDMAJ4XUDqilUguyEuZh/8NW/z0=; b=SoIW81dNSzhBzqkymUH1G/YSw86igK8mn9s0MnnsN1aXvstOERRPZuP9/a55lynrrq +tGpQTJS7T6+7Fqt+gK6ZqvHMDM8OogeIyvGDNhUITGZ29WNzABs4PzZNFNLcbmw59vS ePhMaZ/2HmInIYCGR6fDU7xHulTivlm/LnNOg= Received: by 10.151.29.21 with SMTP id g21mr131646ybj.46.1311777267157; Wed, 27 Jul 2011 07:34:27 -0700 (PDT) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.151.157.15 with HTTP; Wed, 27 Jul 2011 07:34:07 -0700 (PDT) In-Reply-To: <4E301C1F.3020206@gmail.com> References: <4E2F253E.1000508@alokat.org> <4E2F13F9.8090809@coolmail.se> <4E301C1F.3020206@gmail.com> From: Kfir Lavi Date: Wed, 27 Jul 2011 17:34:07 +0300 Message-ID: Subject: Re: [gentoo-user] CFlags for CPU To: gentoo-user@lists.gentoo.org Content-Type: multipart/alternative; boundary=000e0cd56e62088a1004a90df247 X-Archives-Salt: X-Archives-Hash: 22861ee228811adb84d66686c321503c --000e0cd56e62088a1004a90df247 Content-Type: text/plain; charset=UTF-8 On Wed, Jul 27, 2011 at 5:09 PM, Andy Wilkinson wrote: > ** > On 07/26/2011 12:22 PM, pk wrote: > > On 2011-07-26 22:36, Alokat wrote: > > > model name : Intel(R) Core(TM)2 Duo CPU L7100 @ 1.20GHz > > > > > I guess *core2* is the right one? > > Yes, acc. to:http://en.gentoo-wiki.com/wiki/Safe_Cflags/Intel#Core_2_Duo.2FQuad.2C_Xeon_51xx.2F53xx.2F54xx.2F3360.2C_Pentium_Dual-Core_T23xx.2B.2FExxxx.2C_Celeron_Dual-Core > > HTH > > Best regards > > Peter K > > > Another good trick I've found on the forums is to run: > > $ gcc -### -e -v -march=native /usr/include/stdlib.h > > The last line of output will include the various CFLAGS that -march=native > picks. In my case (Phenom II 955): > > "/usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.5/cc1" "-quiet" > "/usr/include/stdlib.h" "-D_FORTIFY_SOURCE=2" *"-march=amdfam10" "-mcx16" > "-msahf" "-mpopcnt"* "--param" "l1-cache-size=64" "--param" > "l1-cache-line-size=64" "--param" "l2-cache-size=512" "-mtune=amdfam10" > "-quiet" "-dumpbase" "stdlib.h" "-auxbase" "stdlib" "-o" "/tmp/ccR1PlNZ.s" > "--output-pch=/usr/include/stdlib.h.gch" > > I typically use -march=native when I don't need to worry about distcc, or > the options from that output that start with "-m". > > -Andy > I must stay, this is brilliant ! Thank you very much. Kfir --000e0cd56e62088a1004a90df247 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Wed, Jul 27, 2011 at= 5:09 PM, Andy Wilkinson <drukargin@gmail.com> wrote:
=20 =20 =20 =20
On 07/26/2011 12:22 PM, pk wrote: 
On 2011-07-26 22:36, Alokat wrote:


model name      : Intel(R) Core(TM)2 Duo CPU     L7100  @ 1.20=
GHz

<snip>


I guess *core2* is the right one?

Yes, acc. to:
http://en.gentoo-wiki.com/wiki/Safe=
_Cflags/Intel#Core_2_Duo.2FQuad.2C_Xeon_51xx.2F53xx.2F54xx.2F3360.2C_Pentiu=
m_Dual-Core_T23xx.2B.2FExxxx.2C_Celeron_Dual-Core

HTH

Best regards

Peter K
Another good trick I've found on the forums is to run:

$ gcc -### -e -v -march=3Dnative /usr/include/stdlib.h

The last line of output will include the various CFLAGS that -march=3Dnative picks.=C2=A0 In my case (Phenom II 955):

=C2=A0"/usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.5/cc1" &q= uot;-quiet" "/usr/include/stdlib.h" "-D_FORTIFY_SOURCE=3D2" <= b>"-march=3Damdfam10" "-mcx16" "-msahf" "-mpopcnt" &quo= t;--param" "l1-cache-size=3D64" "--param" "l1-cache-line-size=3D64" "--param= " "l2-cache-size=3D512" "-mtune=3Damdfam10" "-quiet" "-dumpbase"= ; "stdlib.h" "-auxbase" "stdlib" "-o" "/tmp/ccR1PlNZ.s" "--output-pch=3D/usr/include/stdlib.h.gch"

I typically use -march=3Dnative when I don't need to worry about distcc, or the options from that output that start with "-m".=

-Andy
I must stay, this is brilliant !
Thank you very much.=

Kfir
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