[SciPy-Dev] arpack failures 64-bit

Ralf Gommers ralf.gommers@googlemail....
Sat Jun 19 00:00:55 CDT 2010


Arpack test failures have been reported by several people, all on 64 bit. On
32-bit it's fine.

======================================================================
ERROR: test_nonsymmetric_modes (test_arpack.TestEigenNonSymmetric)
----------------------------------------------------------------------
Traceback (most recent call last):
 File
"/sw/lib/python2.6/site-packages/scipy/sparse/linalg/eigen/arpack/tests/test_arpack.py",
line 204, in test_nonsymmetric_modes
   self.eval_evec(m,typ,k,which)
 File
"/sw/lib/python2.6/site-packages/scipy/sparse/linalg/eigen/arpack/tests/test_arpack.py",
line 186, in eval_evec
   eval,evec=eigen(a,k,which=which,**kwds)
 File
"/sw/lib/python2.6/site-packages/scipy/sparse/linalg/eigen/arpack/arpack.py",
line 397,
in eigen
   params.iterate()
 File
"/sw/lib/python2.6/site-packages/scipy/sparse/linalg/eigen/arpack/arpack.py",
line 222,
in iterate
   raise RuntimeError("Error info=%d in arpack" % self.info)
RuntimeError: Error info=-8 in arpack

For the full list of errors see
http://article.gmane.org/gmane.comp.python.scientific.devel/13706/match=arpack(on
OS X).
Similar report on Linux:
http://thread.gmane.org/gmane.comp.python.scientific.devel/8551
This seems also related: http://projects.scipy.org/scipy/ticket/725.

Does anyone have time to look at this soon? If not, can I mark them as
knownfail for 0.8.0?

Thanks,
Ralf
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