The Nonlinear Programming Solver

When the MULTISTART option is enabled, the iteration log differs from that of the local solver. More specifically, when a value of 2 is specified for the MSPRINTLEVEL= option, the following information is displayed in the log:

Start

indicates the total number of starting points attempted so far.

Best Objective

indicates the value of the objective function at the best local solution found so far.

Local Objective

indicates the value of the objective function obtained at the solution returned by the local solver.

Infeasibility

indicates the infeasibility error at the solution returned by the local solver.

Optimality Error

indicates the optimality error at the solution returned by the local solver.

Local Status

indicates the solution status of the local solver. Several different values can appear in this column:

OPT

indicates that the local solver found a locally optimal solution.

BESTFEAS

indicates that the local solver returned the best feasible point found. See the SOLTYPE= option for more information.

FAIL

indicates that the local solver failed to find a locally optimal solution.

UNBND

indicates that the local solver determined that the problem is unbounded.

INFEAS

indicates that the local solver converged to a point that might be infeasible.

MAXITR

indicates that the local solver reached the maximum number of iterations and could not find a locally optimal solution.

MAXTIME

indicates that the local solver reached the maximum allowable time and could not find a locally optimal solution.

When a value of 3 is specified for the MSPRINTLEVEL= option, the iteration log of the local solver is also printed for each starting point.