Dakota Reference Manual: deactivate

| Dakota Reference Manual Version 6.15 Explore and Predict with Confidence

- Main Page
- Related Pages

All Pages
deactivate

Deactivate Dakota interface features for simplicity or efficiency

## Specification

Alias: none

Argument(s): none

Default: Active set vector control, function evaluation cache, and restart file features are active

Child Keywords:

| Required/Optional | Description of Group | Dakota Keyword | Dakota Keyword Description
--- | --- | --- | --- | ---
| Optional | active_set_vector | Deactivate the Active Set Vector
| Optional | evaluation_cache | Do not retain function evaluation history in memory
| Optional | strict_cache_equality | Do not require strict cache equality when finding duplicates
| Optional | restart_file | Deactivate writing to the restart file

## Description

The optional `deactivate` specification block allows a user to deactivate interface features in order to simplify interface development, increase execution speed, and/or reduce memory and disk requirements. Any or all of these features may be specified concurrently.

- Active set vector (ASV) control: deactivate so that Dakota expects the same response data (all functions, gradients, Hessian) back from the simulation on every evaluation, instead of only those components required by the method for this particular function evaluation.

- Function evaluation cache: save memory by not caching the function evaluation history. May result in additional (duplicate) function evaluations.

- Strict cache equality: allow a relaxed tolerance when detecting duplicate function evaluations. Can be useful when importing data or restarting across machines.

- Restart file: improve efficiency and eliminate restart file storage at the risk of not being able to recover a failed or partial Dakota study.