[SciPy-User] linalg.eigh hangs only after importing sparse module

Nicolas Pinto nicolas.pinto@gmail....
Mon Mar 19 13:24:33 CDT 2012


Hello,

The following simple code hangs only when sparse has been imported:

```
from scipy import sparse  # <<<<<<< BUG
import numpy as np
from scipy import linalg

N = 1000
np.random.seed(42)
X = np.random.random((N, N))
print X.mean()
v, Q = linalg.eigh(X)
print v.mean()
```

Do you think this may be related to other arpack/umfpack/etc. known failures ?

Please let us know how can we help fix this issue.

Thanks for your help.

Regards,

-- 
Nicolas Pinto
http://web.mit.edu/pinto


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