verify_level
Verify the quality of analytic gradients
Specification
Alias: None
Arguments: INTEGER
Default: -1 (no gradient verification)
Description
verify_level instructs the NPSOL and NLSSOL algorithms to perform
their own finite difference verification of the gradients provided by
Dakota. Typically these are used to verify analytic_gradients
produced by a simulation code, though the option can be used with
other Dakota-supplied gradient types including numerical or mixed.
Level 1 will verify the objective gradients, level 2, the nonlinear constraint gradients, and level 3, both. See the Optional Input Parameters section of the NPSOL manual [GMSW86] for additional information, including options to verify at the user-supplied initial point vs. first feasible point.
