For some NLS models, generating the gradient and the hessian-vector products take a long time. Because we need either the Jacobian or the Jacobian-vector products, we can use them to obtain the gradient. Performing AD on the gradient and hprod should be deactivated by default.
For some NLS models, generating the gradient and the hessian-vector products take a long time. Because we need either the Jacobian or the Jacobian-vector products, we can use them to obtain the gradient. Performing AD on the gradient and hprod should be deactivated by default.