Bug#344281: [Pkg-octave-devel] Bug#344281: panic: Illegal instruction in det(eye(x))

[Camm Maguire]

Greetings!  Just a final post on this in case I'm having email trouble
:-).  If someone could kindly send me the output of 'disassemble'
within gdb at the SIGILL shown below, together with a fresh 'bt', that
would be most helpful.  Even if this is not possible, so stating would
be useful.

Take care,

Douglas Bates <dmbates at gmail.com> writes:

> It's dying in an Atlas call to a relatively simple routine (idamax). 
> Because it gives an illegal instruction error my guess is that it is
> picking up the wrong version of the Atlas libraries.  The Atlas
> libraries are specific to the particular processor being used.  You
> could try installing one of
> 
> atlas3-3dnow
> atlas3-sse2
> atlas3-sse
> 
> according to the type of processor you are running.  I believe these
> can all coexist on the same system and the installation process sets
> up a local map to the optimal version but I'm not sure about that. 
> Camm?
> 
> On 12/22/05, Joshua N Pritikin <jpritikin at pobox.com> wrote:
> > On Thu, Dec 22, 2005 at 09:11:44AM -0600, Douglas Bates wrote:
> > > On 12/21/05, Dirk Eddelbuettel <edd at debian.org> wrote:
> > > > | I tried to octave2.1 also, det(eye(9)) gives a panic: Illegal
> > > > | instruction.  det(eye(4)), 5, 6, 7, 8 works though.  It's a mystery.
> > > >
> > > > I very vaguely recall a bug report with respect to Lapack that came up in R
> > > > that was triggered by one matrix size only. If memory serves, it was 9 as
> > > > well. This is the reason we build R with its own copy of Lapack.
> > > >
> > > > I cannot recall what the exact circumstances were, but maybe Doug or Brian
> > > > (CC'ed) can remember ?
> > >
> > > I believe that bug was in an eigenvalue-eigenvector calculation.  I
> > > imagine this calculation is done using an LU decomposition or, if the
> > > matrix is recognized as being symmetric, a Bunch-Kaufman
> > > decomposition.
> > >
> > > Can you create a traceback to show where it is generating the illegal
> > > instruction?
> >
> > Does the follow provide enough detail or should I recompile with -g?
> >
> > Program received signal SIGILL, Illegal instruction.
> > [Switching to Thread -1240947008 (LWP 9259)]
> > 0xb670b656 in ATL_diamax_xp1yp0aXbX () from /usr/lib/atlas/libblas.so.3
> > (gdb) where
> > #0  0xb670b656 in ATL_diamax_xp1yp0aXbX () from
> > /usr/lib/atlas/libblas.so.3
> > #1  0xb68f33a8 in ?? () from /usr/lib/atlas/libblas.so.3
> > #2  0x00000009 in ?? ()
> > #3  0x08f508c8 in ?? ()
> > #4  0xb670b4a5 in ATL_idamax () from /usr/lib/atlas/libblas.so.3
> > #5  0x00000009 in ?? ()
> > #6  0x08f508c8 in ?? ()
> > #7  0x00000001 in ?? ()
> > #8  0x00000009 in ?? ()
> > #9  0xb670b440 in ATL_dgpr1U_a1_x1_yX () from
> > /usr/lib/atlas/libblas.so.3
> > #10 0xb6e3d578 in ?? () from /usr/lib/atlas/liblapack.so.3
> > #11 0x08f508c8 in ?? ()
> > #12 0xb6932c8c in cblas_idamax () from /usr/lib/atlas/liblapack.so.3
> > #13 0x00000009 in ?? ()
> > #14 0x08f508c8 in ?? ()
> > #15 0x00000001 in ?? ()
> > #16 0x00000009 in ?? ()
> > #17 0xb6932c50 in cblas_icamax () from /usr/lib/atlas/liblapack.so.3
> > #18 0xb6e3d578 in ?? () from /usr/lib/atlas/liblapack.so.3
> > #19 0x08f50910 in ?? ()
> > #20 0xb6913d43 in ATL_dgetrfC () from /usr/lib/atlas/liblapack.so.3
> > #21 0x08f50258 in ?? ()
> > #22 0x08f4fe3c in ?? ()
> > ---Type <return> to continue, or q <return> to quit---
> > #23 0x08f50058 in ?? ()
> > #24 0x08f50058 in ?? ()
> > #25 0x00000000 in ?? ()
> > #26 0x00000000 in ?? ()
> > #27 0x08f50058 in ?? ()
> > #28 0x08f50058 in ?? ()
> > #29 0x08f50258 in ?? ()
> > #30 0x08f4fe3c in ?? ()
> > #31 0x00000000 in ?? ()
> > #32 0x00000009 in ?? ()
> > #33 0x08f50258 in ?? ()
> > #34 0x08f4fe3c in ?? ()
> > #35 0x08f50058 in ?? ()
> > #36 0xb6e3d578 in ?? () from /usr/lib/atlas/liblapack.so.3
> > #37 0x00000009 in ?? ()
> > #38 0x08f4f898 in ?? ()
> > #39 0x00000002 in ?? ()
> > #40 0xb6913c27 in ATL_dgetrfC () from /usr/lib/atlas/liblapack.so.3
> > #41 0x08048430 in ?? ()
> > #42 0xb7880b9c in ?? () from /usr/lib/octave-2.9.4/liboctinterp.so
> > #43 0x08f50022 in ?? ()
> > #44 0x08f50058 in ?? ()
> > #45 0x08f50258 in ?? ()
> > ---Type <return> to continue, or q <return> to quit---
> > #46 0x08f4fe3c in ?? ()
> > #47 0xb783775c in ?? () from /usr/lib/octave-2.9.4/liboctinterp.so
> > #48 0x0f3a8b99 in ?? ()
> > #49 0xb7880b9c in ?? () from /usr/lib/octave-2.9.4/liboctinterp.so
> > #50 0x08f4fe3c in ?? ()
> > #51 0xb612cc34 in free () from /lib/tls/i686/cmov/libc.so.6
> >
> >
> >
> > -----BEGIN PGP SIGNATURE-----
> > Version: GnuPG v1.2.4 (GNU/Linux)
> >
> > iD8DBQFDquX+qcqnlKSmC70RAlEfAKC9gfWXnpGa2fLfyzu6l8oGRDV6owCfX/e5
> > 2nifiShhn4tq4pNx4sxFjIs=
> > =R3qI
> > -----END PGP SIGNATURE-----
> >
> >
> >
> 
> 
> 

-- 
Camm Maguire			     			camm at enhanced.com
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"The earth is but one country, and mankind its citizens."  --  Baha'u'llah