Bug#635520: [Pkg-octave-devel] Bug#635520: octave3.2: Octave dies with "panic: Illegal instruction"

[Sébastien Villemot]

reassign 635520 libatlas3gf-base 3.8.3-27
forcemerge 655586 635520
thanks

"Shan Mignot" <shan.mignot at free.fr> writes:

> On Sun, 31 Jul 2011 00:01:49 +0200, Thomas Weber <tweber at debian.org> wrote:
>
>> On Tue, Jul 26, 2011 at 04:17:56PM +0200, Shan Mignot wrote:
>>> Package: octave3.2
>>> Version: 3.2.4-10
>>> Severity: important
>>>
>>>
>>> When prompted to plot something, Octave dies with:
>>> octave:1> plot (1:5)
>>> panic: Illegal instruction -- stopping myself...
>>> attempting to save variables to `octave-core'...
>>> save to `octave-core' complete
>>> zsh: illegal hardware instruction  octave
>>
>> Please remove ATLAS and try again. And send the output of
>> $ cat /proc/cpuinfo
>> to the bug report.

> I let apt remove atlas and install lapack and blas in replacement:
>> apt-get remove libatlas3gf-base
> and it works.

> Here is what /proc/cpuinfo (knowing that I run linux-image-2.6.39-2-686-pae)
> tells me:
>
> processor	: 0
> vendor_id	: GenuineIntel
> cpu family	: 6
> model		: 8
> model name	: Pentium III (Coppermine)
> stepping	: 1
> cpu MHz		: 601.246
> cache size	: 256 KB
> fdiv_bug	: no
> hlt_bug		: no
> f00f_bug	: no
> coma_bug	: no
> fpu		: yes
> fpu_exception	: yes
> cpuid level	: 2
> wp		: yes
> flags		: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pse36 mmx
> fxsr sse up
> bogomips	: 1202.49
> clflush size	: 32
> cache_alignment	: 32
> address sizes	: 36 bits physical, 32 bits virtual
> power management:

I’m merging this bug with #655586. Your CPU is too old for the current
ATLAS package.

You have three options: stick with the unoptimized BLAS (very slow),
create a custom ATLAS package (as explained in the README.Debian of
libatlas3gf-base), or give a try to OpenBLAS (libopenblas-base).

Thanks for your contribution,

-- 
Sébastien Villemot
Researcher in Economics & Debian Maintainer
http://www.dynare.org/sebastien
Phone: +33-1-40-77-84-04 - GPG Key: 4096R/381A7594
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