What CPU do you have and which version of numpy did you get and where did you get it from ? Matthieu 2007/11/17, Jesus Torrecilla Pinero <jtorrecilla@gmail.com>:

I am using Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) under Windows XP and converting a program from Numeric to Numpy. If I have two arrays, say K and T and do dot(K,T) or K*T everything goes well, but if I have a vector b and try dot(K,b) or K*b I get a segfault.

I have tried to run the test in tes_numeric.py and get the same result.

I have tried too to convert b in a matrix with two columns, the second one being all zeroes, and numpy makes the multiplication correctly, so I think the problem is just with vectors

Does this happens with other versions or do you have any idea to fix this problem?

Thanks in advance

-- Jesús Torrecilla Pinero Universidad de Extremadura jtorrecilla at utcsl.com jtorreci at unex.es _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion

-- French PhD student Website : http://miles.developpez.com/ Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92 LinkedIn : http://www.linkedin.com/in/matthieubrucher

2007/11/17, Jesus Torrecilla Pinero <jtorrecilla@gmail.com>:

numpy-1.0.4.win32-py2.5 from sourceforge (precompiled binary) CPU: AMD Athlon XP 2600+ 2.09 GHz, 1.00 Gb RAM The error report says: AppName: pythonw.exe AppVer: 0.0.0.0 ModName: _dotblas.pyd ModVer: 0.0.0.0 Offset: 0007ecf3

OK, I think the problem is that you don't have the SSE2 instruction set and IIRC, this package needs it. David Cournapeau created a package that could solve your problem, but I don't remember the link, you can brows the archive for it ;) Matthieu -- French PhD student Website : http://miles.developpez.com/ Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92 LinkedIn : http://www.linkedin.com/in/matthieubrucher