numpy-discussion

[Numpy-discussion] LAPACK Problem with "import numpy" on AIX

[Adam C. <ad...@ep...>]

Hi all,

I'm new to this list so apologies if this is a solved problem, but I haven't
been able to find anything in the archives.

I've just installed Python 2.4.3 and Numpy-0.9.8 on AIX, and the
configure/make/install of Python and the install of Numpy _appeared_ to go
smoothly.

However, now when I run python and type

>>> import numpy

I get 

import linalg -> failed: No module named lapack_lite

I'm not sure if this is just a warning, but I suspect not, as when I later
try import scipy, it results in a traceback:

>>> import scipy
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File
"/hpcx/home/z001/z001/adam/packages/Python-2.4.3/lib/python2.4/site-packages
/scipy/__init__.py", line 34, in ?
    del linalg
NameError: name 'linalg' is not defined

Can anytone tell me what I'm doing wrong? I've not explicitly installed any
LAPACK library but I was hpoing to use an existing (vendor provided) LAPACK.
The environment variable $LAPACK was set to point to this library at compile
and run-time. 

Do I need lapack_lite aswell? Where can I get it? If I need this other
LAPACK, how can I ensure that my code uses the optimised version of LAPACK
already on this system I'm using? 

Any advice very welcome. Thanks in advance,

Adam

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
 Dr Adam Carter (Applications Consultant)  |epcc|
 e: ad...@ep...  w: http://www.epcc.ed.ac.uk/~adam
 r: 3405 JCMB           t: +44 131 650 6009

Re: [Numpy-discussion] LAPACK Problem with "import numpy" on AIX

[Bill B. <wb...@gm...>]

On 7/13/06, Adam Carter <ad...@ep...> wrote:
>
> Hi all,
>
> Do I need lapack_lite aswell? Where can I get it? If I need this other
> LAPACK, how can I ensure that my code uses the optimised version of LAPACK
> already on this system I'm using?


Lapack_lite is in the numpy sources.  I think it's the fallback if you don't
have a LAPACK.

You can check the config that got built with:
numpy.show_config()

But that doesn't help much if you can't import numpy.

--bb

Re: [Numpy-discussion] LAPACK Problem with "import numpy" on AIX

[Adam C. <ad...@ep...>]

> Lapack_lite is in the numpy sources.  I think it's the fallback if you
don't have a LAPACK.

Thanks Bill, that's what I thought, but I don't understand why it can't find
it. 

> You can check the config that got built with:
> numpy.show_config()

OK, so it appears that NumPy is imported then, albeit with the warning. The
result of the above line is included below.

So maybe the problem lies with SciPy? Perhaps I should take my problem to
scipy-users. Unless anyone has any further insight?

Cheers,

Adam


>>> numpy.show_config()
blas_info:
    libraries = ['blas']
    library_dirs = ['/usr/lib']
    language = f77

lapack_info:
    libraries = ['lapack']
    library_dirs = ['/usr/local/lib']
    language = f77

atlas_threads_info:
  NOT AVAILABLE

blas_opt_info:
    libraries = ['blas']
    library_dirs = ['/usr/lib']
    language = f77
    define_macros = [('NO_ATLAS_INFO', 1)]

atlas_blas_threads_info:
  NOT AVAILABLE

lapack_opt_info:
    libraries = ['lapack', 'blas']
    library_dirs = ['/usr/local/lib', '/usr/lib']
    language = f77
    define_macros = [('NO_ATLAS_INFO', 1)]

atlas_info:
  NOT AVAILABLE

lapack_mkl_info:
  NOT AVAILABLE

blas_mkl_info:
  NOT AVAILABLE

atlas_blas_info:
  NOT AVAILABLE

mkl_info:
  NOT AVAILABLE