gilgamesh: buggy scipy.sparse.linalg

[Asad Hasan]

Hi all,

Has any Python user used scipy.sparse.linalg functions for 'large'   
linear algebra problems, particularly scipy.sparse.linalg.eigen(), on  
gilgamesh ?

It seems that: scipy.sparse linear algebra is much slower than  
comparable MATLAB functions.  Is this expected behaviour ?

I also found that eigenvalues found by scipy.sparse.linalg.eigen() are  
incorrect in some cases (the errors are very large and unrelated to  
iterative convergence).

I am wondering if anyone has come across these problems and how were  
they solved ?

best, asad.