a.rb

[dpo@Aragorn:test ]$ ./hs071_c

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

This is Ipopt version 3.11.7, running with linear solver mumps.
NOTE: Other linear solvers might be more efficient (see Ipopt documentation).

Number of nonzeros in equality constraint Jacobian...:        4
Number of nonzeros in inequality constraint Jacobian.:        4
Number of nonzeros in Lagrangian Hessian.............:       10

Total number of variables............................:        4
                     variables with only lower bounds:        0
                variables with lower and upper bounds:        4
                     variables with only upper bounds:        0
Total number of equality constraints.................:        1
Total number of inequality constraints...............:        1
        inequality constraints with only lower bounds:        1
   inequality constraints with lower and upper bounds:        0
        inequality constraints with only upper bounds:        0

iter    objective    inf_pr   inf_du lg(mu)  ||d||  lg(rg) alpha_du alpha_pr  ls
   0  1.6109693e+01 1.12e+01 5.28e-01   0.0 0.00e+00    -  0.00e+00 0.00e+00   0
   1  1.7410406e+01 7.49e-01 2.25e+01  -0.3 7.97e-01    -  3.19e-01 1.00e+00f  1
   2  1.8001613e+01 7.52e-03 4.96e+00  -0.3 5.60e-02   2.0 9.97e-01 1.00e+00h  1
   3  1.7199482e+01 4.00e-02 4.24e-01  -1.0 9.91e-01    -  9.98e-01 1.00e+00f  1
   4  1.6940955e+01 1.59e-01 4.58e-02  -1.4 2.88e-01    -  9.66e-01 1.00e+00h  1
   5  1.7003411e+01 2.16e-02 8.42e-03  -2.9 7.03e-02    -  9.68e-01 1.00e+00h  1
   6  1.7013974e+01 2.03e-04 8.65e-05  -4.5 6.22e-03    -  1.00e+00 1.00e+00h  1
   7  1.7014017e+01 2.76e-07 2.18e-07 -10.3 1.43e-04    -  9.99e-01 1.00e+00h  1
   8  1.7014017e+01 3.55e-14 2.23e-14 -11.0 1.04e-07    -  1.00e+00 1.00e+00h  1

Number of Iterations....: 8

                                   (scaled)                 (unscaled)
Objective...............:   1.7014017140224134e+01    1.7014017140224134e+01
Dual infeasibility......:   2.2261967499857942e-14    2.2261967499857942e-14
Constraint violation....:   3.5527136788005009e-14    3.5527136788005009e-14
Complementarity.........:   1.0023967333275307e-11    1.0023967333275307e-11
Overall NLP error.......:   1.0023967333275307e-11    1.0023967333275307e-11


Number of objective function evaluations             = 9
Number of objective gradient evaluations             = 9
Number of equality constraint evaluations            = 9
Number of inequality constraint evaluations          = 9
Number of equality constraint Jacobian evaluations   = 9
Number of inequality constraint Jacobian evaluations = 9
Number of Lagrangian Hessian evaluations             = 8
Total CPU secs in IPOPT (w/o function evaluations)   =      0.041
Total CPU secs in NLP function evaluations           =      0.000

EXIT: Optimal Solution Found.


Solution of the primal variables, x
x[0] = 1.000000e+00
x[1] = 4.743000e+00
x[2] = 3.821150e+00
x[3] = 1.379408e+00


Solution of the ccnstraint multipliers, lambda
lambda[0] = -5.522937e-01
lambda[1] = 1.614686e-01


Solution of the bound multipliers, z_L and z_U
z_L[0] = 1.087871e+00
z_L[1] = 2.671608e-12
z_L[2] = 3.544911e-12
z_L[3] = 2.635449e-11
z_U[0] = 2.499943e-12
z_U[1] = 3.896984e-11
z_U[2] = 8.482036e-12
z_U[3] = 2.762163e-12


Objective value
f(x*) = 1.701402e+01
--------------------------------------------------------------------------
Calling MPI_Init or MPI_Init_thread twice is erroneous.
--------------------------------------------------------------------------
[Aragorn:99793] *** An error occurred in MPI_Init
[Aragorn:99793] *** reported by process [140735779176449,140733193388032]
[Aragorn:99793] *** on communicator MPI_COMM_WORLD
[Aragorn:99793] *** MPI_ERR_OTHER: known error not in list
[Aragorn:99793] *** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
[Aragorn:99793] ***    and potentially your MPI job)
[Aragorn:99793] [[39456,1],0] ORTE_ERROR_LOG: Data for specified key not found in file runtime/orte_globals.c at line 503
--------------------------------------------------------------------------
An attempt was made to send a message to a process whose
address is unknown:

  Sender:     [[39456,1],0]
  From node:  Aragorn
  Recipient:  [[INVALID],INVALID]
  On node:    Unknown

The message could not be delivered, and we are aborting.
--------------------------------------------------------------------------
^C