Replicate allows an Activity to hold more than 1 Work items at a time. This lets you quickly try alternative numbers of Activities that perform the same tasks without having to copy the Activity. The Activity starts working on each of them separately and the time taken to process each Work item is the time set at the Timing Orientation of the Activity.
Note that using this facility prevents access to certain other Activity properties and results (e.g. Break downs, Collect Routing In and Utilization results information).
In most cases you simply copy Activities directly on the screen, using the Duplication Wizard, and then you group multiple copies of an Activity using Groups or Sub Processes. Replicate is a fast to assess required capacity in an organization by increasing an Activity’s Capacity without having to create more Objects.
To use Replicate, click the REPLICATE button in the Activity dialog or in the Additional tab on the Ribbon. If this button is greyed out then it is not available (because you are already using one of the facilities at this Activity that cannot be validly simulated by using replicate).
Example on using Replicate
This example illustrates the impact of Replicate. Create a simple model as follows and set the Start Point’s Interarrival time to 1.
This will mean that arrivals are very frequent, and many items will wait to be processed by Activity 1 throughout the simulation. Click on “Run” to run your simulation. The number of Work items in each Object should be similar to this:
Change Activity’s Replicate Number to 3. Run your simulation again. Results should look like this:
Auto Adjust Replicate Levels
If your Activity uses Resources then your Activity's capacity will effectively be the maximum number of Resources available. To have the maximum number of Resources available automatically increase to the replicate level of your Activity, check the Auto Adjust Replicate Levels box in the Additional tab on the Resource Ribbon.