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

[Ondrej Certik]

On Dec 21, 2007 9:40 AM, Charles R Harris <charlesr.harris at gmail.com> wrote:
>
>
>
>
> On Dec 20, 2007 9:32 AM, Ondrej Certik <ondrej at certik.cz> wrote:
> > > > 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
>
> Are you running 32 bits or 64 bits? The Debian versions of ATLAS used to
> encounter illegal instructions on 64 bit Linux on Intel, but ran fine on 32
> bits. You might try compiling your own ATLAS.

My processor is imho 64 bits, but I am running 32 bits Debian.

Yes, it's probably Debian specific problem, but the solution is to
find the bug, and fix it, so that the standard Debian packages work.

Ondrej