On May 17, 2008, at 9:34 AM, David Cournapeau wrote: > Nripun Sredar wrote: >> I have a sparse matrix 416x52. I tried to factorize this matrix using >> svd from numpy. But it didn't produce a result and looked like it is >> in an infinite loop. >> I tried a similar operation using random numbers in the matrix. Even >> this is in an infinite loop. >> Did anyone else face a similar problem? >> Can anyone please give some suggestions? > > Are you on windows ? What is the CPU on your machine ? I suspect > this is > caused by windows binaries which shipped blas/lapack without support > for > "old" CPU.
I have seen this issue as well, on Windows XP running on a Core2 Duo. (But... it was a virtualized environment with VirtualBox, so I don't know if that disables the SSE features.) Anyhow, this was with the latest windows binaries, I think (numpy-1.0.4.win32-py2.5.msi), and had the same issue: infinite loop with 100% processor doing a SVD. (Non-sparse array, though.) Zach _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
