[Ipopt] Not enough memory.

[Eugenio Mijangos Fernandez]

I'm using ipopt with AMPL interface. So far everything went fine
and I had no problems. But now I have a difficulty, when I run a given problem
the message is this:

Ipopt 3.6.1:

******************************************************************************
This program contains Ipopt, a library for large-scale nonlinear optimization.
  Ipopt is released as open source code under the Common Public License (CPL).
          For more information visit http://projects.coin-or.org/Ipopt
******************************************************************************

This is Ipopt version 3.6.1, running with linear solver ma57.

Number of nonzeros in equality constraint Jacobian...:    10975
Number of nonzeros in inequality constraint Jacobian.:        0
Number of nonzeros in Lagrangian Hessian.............: 14690910


EXIT: Not enough memory.

Ipopt 3.6.1: Unknown Error

suffix ipopt_zU_out OUT;
suffix ipopt_zL_out OUT;



What can I do to increase the memory of Ipopt?

Thank you very much for your help.

Eugenio Mijangos