[Coin-ipopt] Measure of Sparsity?

[Frank J. Iannarilli]

>> I am trying to use your ipopt for my project, which, for a moderate >
>> problem, can easily have 20 million variables. Do you think IPOPT can
>> handle so large system,
<snip>

> How dense is the constraint Jacobian, and how dense
> is the Hessian of the Lagrangian?

Hi,

What metrics and values correspond to "sparse" versus "dense", for MA27?

Regards,



Frank J. Iannarilli, franki at aerodyne.com
Aerodyne Research, Inc., 45 Manning Rd., Billerica, MA 01821 USA
www.aerodyne.com/cosr/cosr.html