Examples

· Build a Discrete-Event Model (директория R2013a>SimEvents>Getting Started with SimEvents)

· Select the First Available Server (директория R2013a>SimEvents>Modeling>Routing Select Departure Path Using Output Switch)

· Constructs Involving Queues and Servers (директория R2013a>SimEvents>Getting Started with SimEvents>Model Basic Queueing Systems)

· Use a Signal or an Attribute (директория R2013a>SimEvents>Troubleshooting in SimEvents>Common Problems in SimEvents Models)

· Preemption by High-Priority Entities (директория R2013a>SimEvents>Modeling>Queuing>Preempt an Entity in a Server)

· Control Joint Availability of Two Servers (директория R2013a>SimEvents>Modeling>Entity Management>Entity Blocking Control Enable a Gate for a Time Interval)

· Synchronize Service Start Times with the Clock (директория R2013a>SimEvents>Modeling>Entity Management>Entity Blocking Control>Open a Gate Instantaneously)

The following example (для этого команду open model скопировать в Command Window) illustrates the timing of updates of the util signal, as described in Signal Output Ports (директория R2013a>SimEvents>Modeling>Queuing>Single Server).

The server has idle periods that reduce its utilization. However, the server block recomputes the util signal only when the number of entities in the server changes. While the definition of utilization says that the utilization is less than 1 at time 3, the util signal remains at its previous value of 1 until the next entity arrives at time 4.

In a longer simulation, the differences in the value of util compared to its theoretical definition become less pronounced.