Avoid partial use of a Riesz map in TAO optimizers #240
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jrmaddison
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Only set the gradient norm for cases where the Riesz map is configured elsewhere.
NLSseems to use the gradient norm, even though the optimizer is not fully configured to use the Riesz map, e.g. the identity perturbation at https://petsc.org/release/manual/tao/#newton-line-search-method-nls.Includes #239, which should be reviewed/merged first.