[SciPy-User] many test failures on windows 64

Christoph Gohlke cgohlke@uci....
Wed Jul 7 17:57:51 CDT 2010



On 7/6/2010 11:43 AM, Pauli Virtanen wrote:
> Tue, 06 Jul 2010 11:53:22 -0600, Charles R Harris wrote:
> [clip]
>> Let's get this thread back to the errors. The problems seem specific to
>> the python.org amd64 python, is that correct?
>
> The SuperLU failures puzzle me. It should be "straightforward" C code,
> and I don't understand what can go wrong there. The "Factor is exactly
> singular" error indicates essentially means that SuperLU thinks it
> detects a zero pivot or something, so something seems to fail at a fairly
> low level.
>
> This seems quite difficult to debug without a Win-64 at hand.
>
> Another thing is that Gohlke's binaries are also built against MKL, and
> SuperLU does call BLAS routines. I wonder if something can break because
> of that...


Apparently it can. When I link SuperLU against CBLAS (from the 
SuperLU_4.0 distribution) instead of MKL 10.2 the test errors 
"RuntimeError: Factor is exactly singular" disappear. Now I get many 
more "TypeError: array cannot be safely cast to required type" failures, 
but that's a different problem.


--
Christoph


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