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On Tue, Jul 26, 2011 at 1:36 PM, Alokat <mailing@××××××.org> wrote: |
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> Hi folks, |
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> |
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> I'm wondering what kind of cpu-type I should use? |
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> |
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> cat /proc/cpuinfo |
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> .............. |
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> |
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> processor : 1 |
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> vendor_id : GenuineIntel |
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> cpu family : 6 |
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> model : 15 |
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> model name : Intel(R) Core(TM)2 Duo CPU L7100 @ 1.20GHz |
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> stepping : 11 |
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> cpu MHz : 1197.065 |
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> cache size : 4096 KB |
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> physical id : 0 |
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> siblings : 2 |
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> core id : 1 |
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> cpu cores : 2 |
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> apicid : 1 |
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> initial apicid : 1 |
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> fpu : yes |
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> fpu_exception : yes |
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> cpuid level : 10 |
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> wp : yes |
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> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca |
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> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm |
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> constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 |
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> monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida dts tpr_shadow |
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> vnmi flexpriority |
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> bogomips : 2394.01 |
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> clflush size : 64 |
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> cache_alignment : 64 |
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> address sizes : 36 bits physical, 48 bits virtual |
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> power management: |
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> |
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> .............. |
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> |
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> After a short research on this website: |
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> http://gcc.gnu.org/onlinedocs/gcc-4.6.1/gcc/i386-and-x86_002d64-Options.html#i386-and-x86_002d64-Options |
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> |
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> I guess core2 is the right one? |
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> Is that true? |
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> |
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> Regards, |
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> alokat |
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> |
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|
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Or let gcc figure it out using |
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|
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-march=native |
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|
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which is what I eventually did: |
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|
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# Please consult /usr/share/portage/config/make.conf.example for a more |
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# detailed example. |
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CFLAGS="-O2 -march=native -pipe" |
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#Safe CFlags for the Core-i7 (web info) saved for reference |
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#CFLAGS="-march=core2 -msse4 -mcx16 -msahf -O2 -pipe" |
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CXXFLAGS="${CFLAGS}" |
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# WARNING: Changing your CHOST is not something that should be done lightly. |
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# Please consult http://www.gentoo.org/doc/en/change-chost.xml before changing. |
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CHOST="x86_64-pc-linux-gnu" |
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|
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HTH, |
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Mark |
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