Run Batch Simulations

Batch Simulations generate multiple simulation runs from one setup and a design space. Use them when you need to compare vehicle or ambient parameter changes across many runs instead of creating each simulation manually.

Choose Full Factorial to generate every combination from parameter ranges, or Batch Configuration to copy a saved design matrix.

Before you start

• Select the correct team.
• Confirm the team has enough credits for the included designs.
• Prepare required setup inputs for FastSim or OpenSim.
• You need the required module permissions to create, edit, duplicate, delete, or queue batches.
• Decide which ambient or vehicle parameters you want to vary.

Create a batch

1. Open Batch Simulations from the sidebar.
2. Select New.
3. In General, choose FastSim or OpenSim.
4. Enter a Name. The name must be from 2 to 100 characters.
5. Add Notes and Tags if useful.
6. Select Next to continue to Setup.
7. Select the simulation inputs:
   • FastSim: Vehicle, Circuit, Ambient, and Driver.
   • OpenSim: Vehicle, Ambient, Driver, and Driver Input.
8. Select Next. 4ACE validates Setup, creates the pending draft, and opens Simulation Settings.
9. Set the simulation settings.
10. Optional: turn on Save settings as team defaults to use these tuning settings for future simulations in the selected team.
11. Select Next. 4ACE saves the settings and opens Design Space.

Each Next action saves the work required by the current step before advancing. There is no separate Save action.

Define design space

Choose Full Factorial to generate designs from ranges:

1. Open Ambient Parameters or Vehicle Parameters.
2. Add a parameter.
3. Enter the Lower value.
4. Enter the Upper value.
5. Enter the number of Levels.
6. Repeat for each parameter you want to vary.
7. Select Next. 4ACE saves the scenarios, generates the full-factorial design matrix, and opens Simulations.

If generated simulations already exist, confirm before replacing the existing design matrix.

Use a saved configuration

1. In Design Space, select Batch Configuration.
2. Choose a saved Configuration.
3. Select Next to validate it against the batch's vehicle and ambient and copy its designs.
4. Resolve any Configuration does not match this batch issues before continuing.
5. Confirm replacement if the batch already has designs, then review the Simulations step.

See Batch Configurations to create, import, or edit a matrix.

Parameter scenario fields

Because the design matrix is full factorial, the number of designs grows as parameter levels multiply. For example, three parameters with two levels each create eight designs.

Review generated simulations

The Simulations step shows the generated design matrix. Use it to:

• Review each parameter value for each design.
• Include or exclude individual designs.
• Confirm at least one design is included.

Selection changes are saved when you confirm the queue action.

Queue the batch

1. In Simulations, select Queue Simulations.
2. Review the batch name, parameter counts, total designs, included designs, excluded designs, cost, and available credits.
3. Select Confirm. 4ACE saves inclusion changes before adding the batch to the queue.

Queueing is blocked when no designs are included or the available credits are lower than the batch cost.

Close a pending batch

Select Close to leave a saved pending batch. The draft remains available from the batch list. If the sheet has unsaved local changes, confirm before discarding them.

Review batch results

Pending batches reopen in the batch sheet. Completed batches open the batch detail page.

Batch statuses include:

The batch detail page can include:

Troubleshooting

Related pages

• Create Batch Configurations
• Run FastSim
• Run OpenSim
• Create Driver Inputs
• Review units and conventions
• Look up glossary terms