[SciPy-User] Incorrect values from scipy.sparse.linalg.lobpcg using large matrices

[Pauli Virtanen]

Mon, 06 Jun 2011 15:07:48 -0700, Andrew MacLean wrote:
> I have been using lobpcg (scipy.sparse.linalg.lobpcg) to solve symmetric
> generalized eigenvalue problems with large, sparse stiffness and mass
> matrices, say 'A' and 'B'. The problem is of the form Av = λBV.

Which version of Scipy? In Scipy 0.9, some bugs in lobpcg that appeared
on certain platforms were fixed. If you are using Scipy < 0.9, it's
possible you are hitting these.

-- 
Pauli Virtanen