Re: octave or atlas bug?

[Eric Chassande-Mottin]

> > i have Debian woody 3.1 (stable) installed
> > and since i have a CPU: AMD-K6(tm) 3D processor stepping 0c
> > i installed atlas2-3dnow
> 
> One way to find out would be to de-install Atlas and try the normal
> (unoptimised) blas.

changing from atlas2-3dnow to atlas2-base does solve the problem :

octave2.1:1> 1/ones(5,1)
ans =

  0.20000  0.20000  0.20000  0.20000  0.20000

octave2.1:2> svd(hilb(3))
ans =

  1.4083189
  0.1223271
  0.0026873

octave2.1:3> rank(hilb(3))
ans = 3

thanks dirk, can i do something to help to understand this bug?

é.

> > octave2.1:1> 1/ones(5,1)
> > panic: Illegal instruction -- stopping myself...
> > 
> > octave2.1:1> svd(hilb(3))
> > panic: Illegal instruction -- stopping myself...
> > 
> > octave2.1:1> which svd
> > svd is the dynamically-linked function from the file
> > /usr/lib/octave/2.1.35/oct/i386-pc-linux-gnu/svd.oct
> > 
> > octave2.1:1> rank(hilb(3))
> > panic: Illegal instruction -- stopping myself...
> > 
> > octave2.1:2> which rank
> > rank is the user-defined function from the file
> > /usr/share/octave/2.1.35/m/linear-algebra/rank.m



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