Re: reliable seg fault

[Mike Miller]

On Mon, 24 Oct 2011, Thomas Weber wrote:

> On Mon, Oct 24, 2011 at 02:08:45AM -0500, Mike Miller wrote:
> > I'm guessing the problem is with libraries or with LAPACK or ATLAS.
>
> Build Octave against the reference BLAS and LAPACK and try again. If 
> that works, use LD_PRELOAD to get the linker into prefering ATLAS. If it 
> then crashes, you know it's ATLAS.


Thanks for these tips about ATLAS and gcc.  I found this right away, but 
it seems to be about x86 instead of x86_64:

http://math-atlas.sourceforge.net/errata.html#gccCrazy

It looks like 3.8.4 is the newest stable release and I have 3.8.3, which 
is two years older.  Maybe I should try updating ATLAS.  I think the sys 
admin might have had trouble installing ATLAS because I see these two 
subdirectories next to each other in /export/apps:

drwxr-xr-x 4 root root 4096 May 21  2010 /export/apps/atlas-3.8.3/
drwxr-xr-x 4 root root 4096 Jan 13  2010 /export/apps/atlas-3.8.3-orig/


Another question:  Isn't there a command that can be run within Octave, or 
maybe a command-line option when calling Octave, that tells us something 
about how it was compiled?

Mike