<div>Hi there:</div><div><br></div><div>I have a question. What is the difference between </div><div>(MUMPS returned INFO(1) =-13 - out or memory) and (MUMPS returned INFO(1) = -9 and requires more memory)</div><div><br></div>
<div>On the other hand, I have this "big problem" and the results that are showed below. Could anyone give suggestions about these results? because, I dont know what happens.</div><div><br></div><div>----------------------------------------------------------------------------------------------------------------------</div>
<div>List of user-set options:</div><div><br></div><div> Name Value used</div><div> acceptable_constr_viol_tol = 1e-06 yes</div><div> acceptable_iter = 1000000 yes</div>
<div> acceptable_tol = 1e-06 yes</div><div> constr_viol_tol = 1e-07 yes</div><div> max_iter = 1000000 yes</div>
<div> mumps_mem_percent = 5 yes</div><div> print_user_options = yes yes</div><div> tol = 1e-07 yes</div>
<div><br></div><div>******************************************************************************</div><div>This program contains Ipopt, a library for large-scale nonlinear optimization.</div><div> Ipopt is released as open source code under the Common Public License (CPL).</div>
<div> For more information visit <a href="http://projects.coin-or.org/Ipopt">http://projects.coin-or.org/Ipopt</a></div><div>******************************************************************************</div><div>
<br></div><div>NOTE: You are using Ipopt by default with the MUMPS linear solver.</div><div> Other linear solvers might be more efficient (see Ipopt documentation).</div><div><br></div><div><br></div><div>This is Ipopt version 3.9.1, running with linear solver mumps.</div>
<div><br></div><div>Number of nonzeros in equality constraint Jacobian...: 110972</div><div>Number of nonzeros in inequality constraint Jacobian.: 78413292</div><div>Number of nonzeros in Lagrangian Hessian.............:196033230</div>
<div><br></div><div>MUMPS returned INFO(1) =-13 - out or memory.</div><div>In some cases it helps to decrease the value of the option "mumps_mem_percent".</div><div>Total number of variables............................: 3276415</div>
<div> variables with only lower bounds: 0</div><div> variables with lower and upper bounds: 3276415</div><div> variables with only upper bounds: 0</div>
<div>Total number of equality constraints.................: 110972</div><div>Total number of inequality constraints...............: 19603323</div><div> inequality constraints with only lower bounds: 0</div>
<div> inequality constraints with lower and upper bounds: 0</div><div> inequality constraints with only upper bounds: 19603323</div><div><br></div><div>iter objective inf_pr inf_du lg(mu) ||d|| lg(rg) alpha_du alpha_pr ls</div>
<div> 0 1.9600306e+02 1.94e+01 1.00e+00 -1.0 0.00e+00 - 0.00e+00 0.00e+00 0</div><div>MUMPS returned INFO(1) =-13 - out or memory.</div><div>In some cases it helps to decrease the value of the option "mumps_mem_percent".</div>
<div>WARNING: Problem in step computation; switching to emergency mode.</div><div> 1r 1.9600306e+02 1.94e+01 9.99e+02 1.3 0.00e+00 - 0.00e+00 0.00e+00R 1</div><div>MUMPS returned INFO(1) =-13 - out or memory.</div>
<div>In some cases it helps to decrease the value of the option "mumps_mem_percent".</div><div>WARNING: Problem in step computation; switching to emergency mode.</div><div>Restoration phase is called at point that is almost feasible,</div>
<div> with constraint violation 1.446106e-11. Abort.</div><div>Restoration phase in the restoration phase failed.</div><div><br></div><div>Number of Iterations....: 1</div><div><br></div><div> (scaled) (unscaled)</div>
<div>Objective...............: 1.9600305635355701e+02 1.9600305635355701e+02</div><div>Dual infeasibility......: 1.0000000000000000e+00 1.0000000000000000e+00</div><div>Constraint violation....: 1.9434702993007996e+01 1.9434702993007996e+01</div>
<div>Complementarity.........: 1.4473599800000002e+01 1.4473599800000002e+01</div><div>Overall NLP error.......: 1.9434702993007996e+01 1.9434702993007996e+01</div><div><br></div><div><br></div><div>Number of objective function evaluations = 2</div>
<div>Number of objective gradient evaluations = 2</div><div>Number of equality constraint evaluations = 2</div><div>Number of inequality constraint evaluations = 2</div><div>Number of equality constraint Jacobian evaluations = 2</div>
<div>Number of inequality constraint Jacobian evaluations = 2</div><div>Number of Lagrangian Hessian evaluations = 2</div><div>Total CPU secs in IPOPT (w/o function evaluations) = 668.498</div><div>Total CPU secs in NLP function evaluations = 507.836</div>
<div><br></div><div>EXIT: Restoration Failed!</div><div><br></div><div>----------------------------------------------------------------------------------------------------------------------</div><div><br></div><div>Thank you in advance and waiting answers</div>
<div>Juan Carlos</div>