Scenarios

In the Scenarios page, you can perform Batch Optimization to optimize multiple Scenarios with multiple datasets, simultaneously. This feature allows parallel execution of runs for combinations of Network Scenario and datasets.

All Batch Optimization results are saved automatically, however, they are only available for 30 days, by default. If users need to access these results for a longer period, it is recommended to load the results, navigate to the Results page, and select the page action to Save as Results Dataset.

Note

Workflow

Select Datasets

When you open the Scenarios page without a selected dataset, a dialog displays the available datasets. You can select datasets from this dialog or specify them in the table on the Scenarios page using the select_datasets_button button.

../../../_images/scenario_batchrun_selectdataset.png

Select Scenarios

Specify which Network Scenarios appear in the table on the Scenarios page using the select_networkscenarios_button button. By default, all Network Scenarios are displayed.

../../../_images/scenario_batchrun_selectscenario.png

Set Network Scenarios as Favorite

Once datasets are selected, you can find them along with the available Network Scenarios in the Batch Optimization table. Right-click on a Network Scenario cell to mark (or remove) it as a favorite. Favorites are user specific and will be shown at the top of the list of Network Scenarios, allowing users to easily find the Network Scenarios that they regularly run.

../../../_images/scenario_batchrun_seasfavourite_remove.png

Choose Scenarios to Run

To start running a selected dataset and Network Scenario, click the Run button. You can initiate multiple runs simultaneously by clicking on Run for multiple Network Scenario-dataset combinations, or by selecting multiple cells in the table and pressing the Ctrl + Space keys. During execution, the progress of each dataset and Network Scenario pair is displayed in the table. Active runs will display In Progress instead of the Run button.

../../../_images/scenario_batchrun_inprogress.png

Cancel Scenarios

To stop a Network Scenario from running, hover over the In Progress field to reveal the Cancel option.

../../../_images/scenario_batchrun_cancelrun.png

Load Scenario Results

View the results of each run by clicking the viewresults_button button in the table, which loads the associated Network Scenario and dataset result into the application.

../../../_images/scenario_batchrun_viewresults.png

Infeasibilities and Optimization Errors

If an infeasibility occurs during the optimization, the user will be presented with the infeasibility_button button. Clicking on this button will load the Network Scenario and dataset so that the infeasibility can be analyzed.

If an error occurs during the optimization, the user will be presented with the optimizationerror_button button. Clicking on this button will load the Network Scenario and dataset so that the error can be reproduced. Hovering over the button will show a tooltip that contains more information about the error. When an Optimization Error occurs, it is possible to re-run the Network Scenario by right-clicking on the optimizationerror_button button and selecting Retry, as shown below.

../../../_images/scenarios_batch_itemaction.png

Inspect the Overview

A summary of the Batch Optimization, including the total number of runs (together with single runs) and those in progress, is visible in the status bar. Hover over the summary to display a tooltip with detailed information.

../../../_images/scenario_batchrun_runTooltip.png

Click on this item in the status bar to open the Overview of Solutions. On the Batch Optimization Runs Overview tab you can see a detailed overview of the Scenarios that were started in this SC Navigator session. This overview shows which runs are in progress, which runs have completed, as well as some high-level results from runs that have been completed. Results can also be loaded from this dialog.

../../../_images/overviewsolution_batchrun.png

You can switch to the Single Optimization Runs Overview tab page where you can find the previous single runs. You can read more about that dialog page in Number of Completed Runs.

Batch Optimization Options

Clicking on the optimizationsettings_button button on the top-right of the Scenario Navigator page, will open the following dialog:

../../../_images/scenarios_optimizationsettings.png

  • Export to Data Lake: Upon completion of an optimization run, immediately export the results of the run as a Result Dataset in the Data Lake.

  • Results Visible to Everyone: Make the Results Dataset for completed Network Scenario and dataset runs visible and accessible to all users of this application within your organization, such that other users can load and inspect the results. When this switch is off, only the user who runs the Batch Optimization will see the results.

Both of these settings must be configured before starting a Batch Optimization to ensure they are applied.

Saving Batch Optimization Results

All Batch Optimization results are automatically saved but are only retained for 30 days by default, based on the Retention Settings of the user’s organization. In some cases, not all users will have the necessary rights to change these settings. To keep results longer without changing the Retention Settings, users can permanently save results by loading them, going to the Results page, and selecting the Save as Results Dataset page action. Another way to permanently save the results of a Batch Optimization is to toggle on the Export to Data Lake option before pressing Run. This option can be accessed via a dialog by clicking on the optimizationsettings_button button on the top-right of the Batch Optimization page.

Download Solutions

Using the select_batchdownload_button button, you can download an Excel file with the results of all the runs.

Scenario Types

The remainder of this chapter provides explanation of each Scenario type, organized by page.