Hi Kathrin,
I'm not sure why lapack would fail here, you could try to look up that
error "Error in Lapack xGGES 260" in the lapack documentation?
In my experience, lapack works robustly unless the problem is "too
large": lapack treats the matrices as dense, so you "hit a wall" at some
point an
Hi all,
I am trying to solve a generalized eigenvalue problem based on
eigenproblems_ex2.C, where the matrix A is singular (only a few entries
are different from zero) and the matrix B is symmetric and positive
definite and I am using lapack. I get convergence for a mesh of 30
\times 5 \times
