[Numpy-discussion] segfault with atlas3-sse2, works with atlas3-sse

Pauli Virtanen pav@iki...
Thu Dec 20 13:27:16 CST 2007


to, 2007-12-20 kello 17:32 +0100, Ondrej Certik kirjoitti:
> > > when compiled on Debian, numpy segfaults when used with ATLAS sse2,
> > > but works when used against ATLAS sse. More information here:
> >
> > What is the machine on which you are getting the segfault?  Is it
> 
> I don't know which machine the reporter of this bug in Debian uses, but I use
> Intel Core Duo.
> 
> > possible you are trying to run SSE2 instructions on a machine without
> > SSE2?
> 
> the /proc/cpuinfo says:
> 
> flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
> pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc
> pni monitor est tm2 xtpr
> 
> so imho I do have SSE2.

If it's not wrong instructions for the processor type, this reminds me
of http://scipy.org/scipy/numpy/ticket/551 which also seemed to be
SSE2-specific on Debian/Ubuntu in my tests.

-- 
Pauli Virtanen
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