[Numpy-discussion] failure with numpy.inner

Robert Kern robert.kern@gmail....
Sat Jul 5 18:45:02 CDT 2008


On Sat, Jul 5, 2008 at 09:03, Gregor Thalhammer
<gregor.thalhammer@gmail.com> wrote:
> After upgrading to NumPy 1.1.0 (I installed
> numpy-1.1.0-win32-superpack-pyhon2.5) I observed a fatal failure with
> the following code which uses numpy.inner
>
> import numpy
> F = numpy.zeros(shape = (1,79), dtype = numpy.float64)
> #this suceeds
> FtF = numpy.inner(F,F.copy())
> #this fails
> FtF = numpy.inner(F,F)
>
> The failure (Exception code 0xc0000005) happens in _dotblas.pyd. I use
> Windows XP on a Intel Core2Duo system. Further, I could observe that it
> depends on the size of the array wether this failure appears or not.
>
> I submitted this report also as ticket #844.
>
> I hope somebody can track down the reason for this behaviour (and fix it).

Hmm. This looks like a problem with that particular build's ATLAS. I
do not see a problem on OS X.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
 -- Umberto Eco


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