Re: [gentoo-user] Which -march and flags for Intel Dual Core (*NOT* Core Duo)?
On Wed, Aug 29, 2007 at 09:43:35PM -0400, Statux wrote CFLAGS=-march=prescott -O2 -pipe CHOST=i686-pc-linux-gnu which is what I use on my 531 Prescott (the pni cpuflag indicates Prescott or compatible) Thanks. I don't know if I'm reading the gcc docs too literally, but the commentary on -mfpmath=sse indicates that mmx/sse/sse/sse3 flags must be explicitly stated for -mfpmath=sse to take effect on a 32-bit system (sse is the default on 64-bit systems). So I explicitly included the flags. I also included -fomit-frame-pointer, resulting in... CFLAGS=-O2 -march=prescott -mmmx -msse -msse2 -msse3 -mfpmath=sse -fomit-frame-pointer -pipe -- Walter Dnes [EMAIL PROTECTED] In linux /sbin/init is Job #1 Q. Mr. Ghandi, what do you think of Microsoft security? A. I think it would be a good idea. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Which -march and flags for Intel Dual Core (*NOT* Core Duo)?
On Samstag, 1. September 2007, Walter Dnes wrote: On Wed, Aug 29, 2007 at 09:43:35PM -0400, Statux wrote CFLAGS=-march=prescott -O2 -pipe CHOST=i686-pc-linux-gnu which is what I use on my 531 Prescott (the pni cpuflag indicates Prescott or compatible) Thanks. I don't know if I'm reading the gcc docs too literally, but the commentary on -mfpmath=sse indicates that mmx/sse/sse/sse3 flags must be explicitly stated for -mfpmath=sse to take effect on a 32-bit system (sse is the default on 64-bit systems). So I explicitly included the flags. I also included -fomit-frame-pointer, resulting in... CFLAGS=-O2 -march=prescott -mmmx -msse -msse2 -msse3 -mfpmath=sse -fomit-frame-pointer -pipe mmx, sse,sse2,sse3 is already set by prescott (if man gcc can be trusted but it should not hurt to set them) but mfpmath can result in subtile breakage. fomit-frame-pointer is ok, O2 too. CFLAGS=-O2 -march=prescott -fomit-frame-pointer -pipe is much safer. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Which -march and flags for Intel Dual Core (*NOT* Core Duo)?
Hello On Wed, Aug 29, 2007 at 09:14:06PM -0400, Walter Dnes wrote: Two identical cores show up in /proc/cpuinfo. To save space on the list, I'm only listing the 2nd one. I'm about to do an install. Any ideas for USE and other settings also welcome. gcc 4.something (I hope it is already on the live CDs) have a cute feature. --march=native, and it will look at the CPU and decide itself what best it can do about it. -- ~, sweet ~ Michal 'vorner' Vaner pgp9i2BETu8uS.pgp Description: PGP signature
Re: [gentoo-user] Which -march and flags for Intel Dual Core (*NOT* Core Duo)?
Am Donnerstag 30 August 2007 03:43:35 schrieb Statux: On Wed, 2007-08-29 at 21:14 -0400, Walter Dnes wrote: Two identical cores show up in /proc/cpuinfo. To save space on the list, I'm only listing the 2nd one. I'm about to do an install. Any ideas for USE and other settings also welcome. processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Genuine Intel(R) CPU2140 @ 1.60GHz stepping: 2 cpu MHz : 1596.041 cache size : 1024 KB physical id : 0 siblings: 2 core id : 1 cpu cores : 2 fdiv_bug: no hlt_bug : no f00f_bug: no coma_bug: no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl est tm2 ssse3 cx16 xtpr lahf_lm bogomips: 3192.10 If it's going to be a 32bit system, then personally, I would use: CFLAGS=-march=prescott -O2 -pipe CHOST=i686-pc-linux-gnu which is what I use on my 531 Prescott (the pni cpuflag indicates Prescott or compatible) If you are doing a 64bit system, then use -march=nocona and CHOST=x86_64-pc-linux-gnu and remember to use a 64bit livecd for the install like the one for amd64 unless they've got something better now adays. That's my $0.02. Anyone else have additions/corrections? :-) I suppose Walter meant Which -march and flags for Intel Core Duo (*NOT* Core 2 Duo) In that case the first settings you've posted are correct. signature.asc Description: This is a digitally signed message part.
[gentoo-user] Which -march and flags for Intel Dual Core (*NOT* Core Duo)?
Two identical cores show up in /proc/cpuinfo. To save space on the list, I'm only listing the 2nd one. I'm about to do an install. Any ideas for USE and other settings also welcome. processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Genuine Intel(R) CPU2140 @ 1.60GHz stepping: 2 cpu MHz : 1596.041 cache size : 1024 KB physical id : 0 siblings: 2 core id : 1 cpu cores : 2 fdiv_bug: no hlt_bug : no f00f_bug: no coma_bug: no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl est tm2 ssse3 cx16 xtpr lahf_lm bogomips: 3192.10 -- Walter Dnes [EMAIL PROTECTED] In linux /sbin/init is Job #1 Q. Mr. Ghandi, what do you think of Microsoft security? A. I think it would be a good idea. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] Which -march and flags for Intel Dual Core (*NOT* Core Duo)?
On Wed, 2007-08-29 at 21:14 -0400, Walter Dnes wrote: Two identical cores show up in /proc/cpuinfo. To save space on the list, I'm only listing the 2nd one. I'm about to do an install. Any ideas for USE and other settings also welcome. processor : 1 vendor_id : GenuineIntel cpu family: 6 model : 15 model name: Genuine Intel(R) CPU2140 @ 1.60GHz stepping : 2 cpu MHz : 1596.041 cache size: 1024 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp: yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl est tm2 ssse3 cx16 xtpr lahf_lm bogomips : 3192.10 If it's going to be a 32bit system, then personally, I would use: CFLAGS=-march=prescott -O2 -pipe CHOST=i686-pc-linux-gnu which is what I use on my 531 Prescott (the pni cpuflag indicates Prescott or compatible) If you are doing a 64bit system, then use -march=nocona and CHOST=x86_64-pc-linux-gnu and remember to use a 64bit livecd for the install like the one for amd64 unless they've got something better now adays. That's my $0.02. Anyone else have additions/corrections? :-) -- Walter Dnes [EMAIL PROTECTED] In linux /sbin/init is Job #1 Q. Mr. Ghandi, what do you think of Microsoft security? A. I think it would be a good idea. -- Statux [EMAIL PROTECTED] signature.asc Description: This is a digitally signed message part
