[SciPy-User] many test failures on windows 64

Christoph Gohlke cgohlke@uci....
Tue Jul 6 13:52:41 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?

No, the unofficial scipy-0.8.0rc1.win32-py2.6 build fails with (mostly) 
the same errors.

Most of the reported errors are apparently specific to my build 
environment: msvc9, ifort 11.1, mkl 10.2, numscons 0.12.0dev.

> 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...
> @Robin: Also, for the cases where a wrong result is produced with no
> error: is it easy to write a small test program demonstrating this? If
> yes, could you write one?


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