Vensim Help

Field

Type

Description

Enabled

Tickbox

Tick this to show this run configuration when clicking the drop down simulate button on the main Vensim toolbar.

Description

Text

A description for this run. This will also be saved as the run comment.

Simulation type

Drop list

This droplist sets the simulation type (regular, sensitivity, optimization or MCMC)

Runname

Text

The runname is set using this editbox.

Clear runs

Tickbox

Tick this to clear the list of runs loaded before this run is executed.

Files/Actions

Various

This contains a list of any changes/data files as well as any additional changes to constants/lookups.

Savelist

Drop list

This droplist allows you to select a pre-defined savelist to use with this run (PLE+/Pro/DSS only).

Sensitivity control

Drop list

This droplist allows you to select a pre-defined sensitivity control file to use with this run (PLE+/Pro/DSS only).

Sensitivity save list

Drop list

This droplist allows you to select a pre-defined savelist to use with this sensitivity run (PLE+/Pro/DSS only).

Payoff definition

Drop list

This droplist allows you to select a pre-defined payoff definition to use with this optimization run (Pro/DSS only).

Optimization control

Drop list

This droplist allows you to select a pre-defined optimization control file to use with this optimization run (Pro/DSS only).

Payoff report

Tickbox

Tick this to enable the generation of a payoff report for this run (Pro/DSS only).

Base run on

Drop list

This droplist allows you to select a previous run to base this run on.

Resume run

Tickbox

Tick to resume a run rather than base the run on a previous one.

Resume time

Numeric

Set the time at which the simulation is resumed.

Enable Kalman

Tickbox

Tick to enable Kalman filtering

Kalman parameters

Drop list

This droplist allows you to select a Kalman parameters file to use with this run.

Kalman payoff

Drop list

This droplist allows you to select a payoff file to use with Kalman filtering on this run.

Kalman steps

Numeric

Allows you to set the number of steps to be used in Kalman filtering.

Kalman report

Tickbox

Generate a report when running Kalman filtering.

Load CIN as DP

Tickbox

Reads the constants in a .cin or .out file at full double precision.  With it off they are rounded to single precision - about seven significant digits - on the way into the model, so an optimum recorded in a .out file does not reproduce exactly when it is read back.

It is on for new models.  A model saved before this setting existed has it off and keeps it off, so that its results do not change; tick it if you want the full precision.

Overwrite GET..CONST

Tickbox

Allows you to override any constants that are imported via spreadsheets/other types of files

Generate linearized

Tickbox

Loop impact and energy: the Jacobian, per-edge loop impact and the force, work and energy columns.  It needs no eigendecomposition, so it stays affordable on models where Run dominance does not.

Run dominance

Tickbox

Eigenvalue analysis - eigenvalues, participation and loop influence - on top of the loop impact results, which it produces as well.  This is the expensive tier on a model with large feedback blocks.

Run Heart

Tickbox

Heart of the System: the full nonlinear stock to rate response curve for each causal pair.

Analysis files

Tickbox

Write the analysis results to tab-delimited sidecar files beside the run.  Without it the results are kept in the run for the loop tools to read, and nothing is written to disk.  It applies to whichever of the three above are on - there is no per-method setting.  New models have it on, so a command script that enables a method gets its output; a model saved before the setting existed has it off, and you can tick it when you want the tables.