Once a simulation begins, a new menu bar appears at the top of the screen with selections for controlling the animation and for interacting with the simulation. ![]() The decimal places shown in the simulation when displaying a real variable using a Label is fixed at 2 decimal places and can not be changed. Variables may also be shown on the Scoreboard (see variables). ![]() Since entity names can be changed during a simulation, statistics are collected based on the name assigned to the entity when it exits the system. Expressed in terms of the time unit selected in the Simulation/ Options dialog.Ĭost per Unit The average cost of the entity type. VA Time (time unit) The average value added time-time the entity type spent in activity time. Expressed in terms of the time unit selected in the Simulation/Options dialog.Īvg. Cycle Time (time unit) The average time the entity type spent in the system. Qty Processed The number of entities of this particular type that have been processed, meaning those that have exited the system.Īvg. In addition to your flowchart, a scoreboard appears on the Simulation Window to illustrate performance measures if the scoreboard option is selected in the Options dialog.Įntity1, Entity2,… Entities for which statistics are gathered are displayed across the top of the scoreboard. Continuous, Periodic, or Ordered arrivals will need to be used. Caution: Daily Pattern or Scheduled arrivals can not be used with this technique because the clock is no longer tracking 24 hour days. To run a model without shift files for 4 weeks, using a 5 day workweek at 40 hours per week, reduce the run length from 672 hours (4 x 168) to 160 hours (4 x 40). If there is a need to avoid the shift files to compensate for evenings and weekends, just run straight work time (not being concerned with the “day of week”), it can reduce the simulation run length to 40 hours per week. For example, a normal 7 day work week is 168 hours (7 x 24). The ProcessModel simulation clock runs straight time using 24 hour days, 7 days per week. Individual submodels can be disabled in the Activity dialog. Scoreboard Time units Allows you to select the time unit displayed in the scoreboard at the time of simulation.ĭisable subprocesses Causes the simulation to be run the main model only (no submodels are executed). Show Scoreboard Check to display basic performance measures (entities processed, value-added time, etc.) during the simulation. Disabling the animation enables the simulation to run faster and consumes less memory. Show Animation If checked, the process will be animated during the simulation. Report time units Allows you to select the default time units to use when you run the model. Running multiple replications allows you to use a meaningful sample size when interpreting the results since each replication uses a different seed to generate random numbers. If your model has any random behavior defined using one or more probability distributions, the simulation results will also be random. ![]() Replications The number of replications to run for increasing the statistical significance of output results. The longest warm-up length allowed is 2,270 hours. This is the designed purpose of the warm up length. Again, any constant or expression may be used in this field. The scoreboard values will reset after the warmup period ends. This option allows you to define that time to allow your model to warm up before you begin collecting statistics. Many systems require a time to warm up before they are running at a steady state, and if you collected statistics during this warm-up period, your results would likely be skewed. Warmup length The length of time to run the simulation before collecting statistics. The longest a model can run a simulation for is 71,582 hours or 2,982.6 days or 8.17 years approximately. The smallest time allowed is.06 seconds. You may use any constant or expression to indicate the length of time the simulation will run. Run length The length of time for running the simulation. 7.2 – Benefits of Using Hierarchical Modeling.
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