I have available large sparse matrices from a FEM software (ANSYS) to use for an eigenvalue problem.
The problem is i can not store 10^6 x 10^6 sparse matrices in matlab because it is too big.
Did anybody experienced and solved similar problem?
ANsys allows to convert in harwell boeing format these matrices, which are sparse, but then i can't store inside matlab and use them for apply a banal eigen value problem using for example the routine "eigs".
Thanks for the help