Dakota Reference Manual: options_file

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options_file

File containing advanced QUESO/GPMSA options

## Specification

Alias: none

Argument(s): STRING

Default: no advanced options file

## Description

Allow power users to override default QUESO/GPMSA options such as hyper-parameter priors, initial chain position, and proposal covariance (including hyper-parameters), which might not be accessible through Dakota user input.

Default Behavior No advanced options used.

Usage Tips The `options_file` offers a final override over other options settings, which are applied with the folowing precedence:

1. QUESO library defaults
2. Dakota hard-coded defaults
3. Settings from Dakota input file
4. Settings from the advaned `options_file`

## Examples

    # FILE: dakota_gpmsa.opts

    # Base QUESO Environment options
    env_subDisplayFileName   = QuesoDiagnostics/display
    env_subDisplayAllowedSet = 0 1
    env_displayVerbosity     = 2
    env_seed                 = 2460

    # GPMSA Options
    gpmsa_emulator_precision_shape = 2.0
    gpmsa_emulator_precision_scale = 0.2
    gpmsa_emulator_correlation_strength_alpha = 1.0
    gpmsa_emulator_correlation_strength_beta = 0.1
    gpmsa_discrepancy_precision_shape = 1.0
    gpmsa_discrepancy_precision_scale = 1e4
    gpmsa_discrepancy_correlation_strength_alpha = 1.0
    gpmsa_discrepancy_correlation_strength_beta = 0.1
    gpmsa_emulator_data_precision_shape = 3.0
    gpmsa_emulator_data_precision_scale = 333.333