[Numpy-discussion] FPE on tensordot

Alexandre Fayolle alexandre.fayolle@logilab...
Tue Sep 18 07:07:14 CDT 2007


Hi,

A user of some code I've written is experiencing some strange behaviour
with numpy.tensordot. I have unfortunately no access to his computer and
cannot reproduce the crash on my machine. The short way of reproducing
this is: 

import numpy
a=numpy.array([0.5,0.5])
b=numpy.array([[0.,1.],[2.,3.]])
numpy.tensordot(a,b,axes=(0,0))

This works and returns  array([ 1.,  2.])


import numpy
a=numpy.array([0.4,0.5])
b=numpy.array([[0.,1.],[2.,3.]])
numpy.tensordot(a,b,axes=(0,0))

This crashes with an FPE. 

He is running Linux (Debian sarge based) with python 2.3.5. Numpy
1.0.3.1 was compiled manually by the admins of the lab (and I don't know 
which options they used, probably the default). The machine is a 32bit 
Intel. 

I'm puzzled, and welcome any insight on this. 

Regards

-- 
Alexandre Fayolle                              LOGILAB, Paris (France)
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