[Numpy-discussion] cpuinfo fails to recognize Core2 cpu on linux

Nadav Horesh nadavh at visionsense.com
Thu Dec 28 07:35:03 CST 2006


System: gentoo linux (64 bits) on Core2 Duo.
scipy fails to install since cpuinfo idendified the cpu as i686.

Solution:
I changed the linux_cpuinfo._is_Nocona() method to:

    def _is_Nocona(self):
#        return self.is_PentiumIV() and self.is_64bit()
        return re.match(r'Intel.*?Core.*\b',
                        self.info[0]['model name']) is not None


I am not sure that this solution is general enough.
Here is my "cat /proc/cpuinfo" result:

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 1596.000
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
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 syscall nx lm constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 4797.90
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
stepping        : 6
cpu MHz         : 2394.000
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
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 syscall nx lm constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 4795.32
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual

  Nadav.



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