On Wed, 14 Dec 2005, Joe Frankel wrote:

> Hi there - does any know anything about the error:
>
> Error: Too many iterations in eigen evaluation.
>
> in pfile_klt?
>
> Thanks, Joe.

I asked Jeff Bilmes about this error once. This is what he wrote to
me:

Yes, if I remember correctly, this has to do with an iterative
algorithm for computing the eigenvalues. Typically, the convergence
rate is pretty fast (i.e., typically no more than about 5) but when
the eigenvalues of a matrix are close to each other, convergence can
take longer (potentially longer than 30 iterations) but this should
be quite rare. It might be safe to increase 30 (but that is already very
big), but you might run out of numerical precision.

My guess, however, is that something is funny with your data (have
you checked for linear dependencies, or some such thing).