[Numpy-discussion] eig hangs

David M. Cooke cookedm at physics.mcmaster.ca
Thu Jun 8 15:23:26 CDT 2006


On Thu, 8 Jun 2006 14:31:31 -0500
Robert Hetland <hetland at tamu.edu> wrote:

> 
> I set up a linux machine without BLAS, LAPACK, ATLAS, hoping that
> lapack_lite would take over.  For the moment, I am not concerned
> about speed -- I just want something that will work with small
> matricies.  I installed numpy, and it passes all of the tests OK, but
> it hangs when doing eig:
> 
> u, v = linalg.eig(rand(10,10))
> # ....lots of nothing....
> 
> Do you *need* the linear algebra libraries for eig? BTW,  inverse
> seems to work fine.

It should work. Can you give us a specific matrix where it fails? What
platform are you running on?

Lapack_lite probably doesn't get much testing from the developers, because we
probably all have optimized versions of blas and lapack.

-- 
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|David M. Cooke                      http://arbutus.physics.mcmaster.ca/dmc/
|cookedm at physics.mcmaster.ca




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