logo       

Bug in built in SVD?: msg#00017

python.numeric.general

Subject: Bug in built in SVD?

When numarray is compiled with the buit-in linear-algebra routine the svd
routine runs into an infinite loop.

Platform2: python 2.3.4 and 2.4a2; numarray 1.1; gcc 3.4.1; RH9 and gentoo 1.4

example:

>> from numarray.linear_algebra.mlab import *
>>> svd(arange(20.0, shape = (5,4)))

... infine loop ...


--------------------------------------------------------------------------

svd runs OK when compiled againts external LAPACK.

BTW: Why numarray used dgesdd routine for SVD, and not the svd routine that has
the ATLAS equivalent?

Nadav.



-------------------------------------------------------
SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media
100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33
Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift.
http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285


<Prev in Thread] Current Thread [Next in Thread>
Google Custom Search

News | FAQ | advertise