Pearu Peterson wrote:

> 
> 
>  On Tue, 30 Nov 2004, Nils Wagner wrote:
> 
> >> Which test crashes python, check_syevd or check_heevd?
> >>
> > Python 2.3.3 (#1, Apr  6 2004, 01:47:39)
> > [GCC 3.3.3 (SuSE Linux)] on linux2
> > Type "help", "copyright", "credits" or "license" for more information.
> >
> >>>> import scipy
> >>>> scipy.lib.lapack.test(verbosity=10)
> >>>
> >  !! No test file 'test_flapack.py' found for <module 
> > 'scipy.lib.lapack.flapack' from '...es/scipy/lib/lapack/flapack.so'>
> >  !! No test file 'test_clapack.py' found for <module 
> > 'scipy.lib.lapack.clapack' from '...es/scipy/lib/lapack/clapack.so'>
> > Found 6 tests for scipy.lib.lapack
> >  !! No test file 'test_calc_lwork.py' found for <module 
> > 'scipy.lib.lapack.calc_lwork' from '...scipy/lib/lapack/calc_lwork.so'>
> > Found 0 tests for __main__
> > check_gebal (scipy.lib.lapack.test_lapack.test_flapack_simple) ... ok
> > check_gehrd (scipy.lib.lapack.test_lapack.test_flapack_simple) ... ok
> > Segmentation fault
> 
> 
>  Now try
> 
>  scipy.lib.lapack.flapack.zheev([[1,2,3],[2,2,3],[3,3,6]])
>  scipy.lib.lapack.flapack.zheevd([[1,2,3],[2,2,3],[3,3,6]])
>  scipy.lib.lapack.flapack.cheev([[1,2,3],[2,2,3],[3,3,6]])
>  scipy.lib.lapack.flapack.cheevd([[1,2,3],[2,2,3],[3,3,6]])
>  scipy.lib.lapack.flapack.dsyev([[1,2,3],[2,2,3],[3,3,6]])
>  scipy.lib.lapack.flapack.dsyevd([[1,2,3],[2,2,3],[3,3,6]])
>  scipy.lib.lapack.flapack.ssyev([[1,2,3],[2,2,3],[3,3,6]])
>  scipy.lib.lapack.flapack.ssyevd([[1,2,3],[2,2,3],[3,3,6]])
> 
>  Which one is causing python crash? 

 > >> scipy.lib.lapack.flapack.cheev([[1,2,3],[2,2,3],[3,3,6]])
Segmentation fault
 > >> scipy.lib.lapack.flapack.cheevd([[1,2,3],[2,2,3],[3,3,6]])
Segmentation fault


>  And which one is not?
> 
>  If they do, then build lib.lapack package against Fortran BLAS/LAPACK 
>  libraries and try the tests again. Here are basic steps (fix the paths 
>  in BLAS_SRC and LAPACK_SRC to your setup):
> 
>  $ cd Lib/lib/lapack
>  $ rm -rf build
>  $ ATLAS=None BLAS=None LAPACK=None BLAS_SRC=~/src/blas >    LAPACK_SRC=~/src/LAPACK/ pytho
n setup_lapack.py build
>  $ python tests/test_lapack.py -v 10
> 
>  If you still get a crash, build lib.lapack without optimization:
> 
>  $ rm -rf build
>  $ ATLAS=None BLAS=None LAPACK=None BLAS_SRC=~/src/blas >    LAPACK_SRC=~/src/LAPACK/ pytho
n setup_lapack.py build config_fc 
>  --noopt
>  $ python tests/test_lapack.py -v 10
> 
>  If this works then we are dealing with gcc optimization bug.
> 
> 
>  HTH,
>  Pearu
> 
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>  Scipy-dev@[...].net
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