ExtendSim is a simulation program for modeling discrete event, continuous, agent-based, discrete rate, and mixed-mode processes. There are three main ExtendSim simulation model building packages: CP for modeling continuous processes; DE which adds discrete event technology; and Pro which adds discrete rate and reliability block diagramming modules.
History
Year |
Features added
|
1987 |
Original release for continuous modeling on the Macintosh
|
1989
|
Discrete event capabilities added
|
1992 |
Hierarchical modeling, Cloning, Animation, Interactivity
|
1994
|
Sensitivity Analysis, interface to Microsoft Excel
|
1995 |
Release for Microsoft Windows
|
1998
|
Scripting, Activity-Based Costing
|
2001
|
Optimizer, ActiveX/COM and ODBC support, source code debugger
|
2002
|
FTP support
|
2007
|
Changed product name from Extend to ExtendSim, internal database
|
2008 |
Discrete rate and 3D capabilities added
|
2010
|
Scenario Manager, Advanced Resource Manager
|
2013
|
ADO database support, Flow attributes
|
2018
|
Integrated reliability diagramming, ExtendSim Cloud released
|
2024
|
Multicore Analysis to run models in parallel and launch multiple instances of ExtendSim
|
Model construction
Models are created by placing blocks from a library into a model worksheet. Blocks are connected together to create the logical flow of the model. Data for the model resides in the parameters of the blocks and in a proprietary database. New blocks can be created by combining existing blocks into a single hierarchical block or by programming a block in ExtendSim's C-based language, ModL. The major libraries in ExtendSim are:
Library name |
Purpose |
Sample blocks
|
Value |
Mathematical calculations, remote data access, statistics collection |
Math, Equation, Decision, Random Number, Read, Write, Mean & Variance
|
Item |
Models discrete event processes |
Queue, Activity, Equation, Create, Batch & Unbatch, Resource Management, Select Item In & Out
|
Rate |
Models discrete rate processes for high-speed, high-volume simulation |
Tank, Valve, Interchange, Convey Flow, Merge & Diverge, Throw & Catch Flow
|
Reliability
|
Reliability block diagramming
|
Start Node, Component, End Node, Event Builder, Distribution Builder
|
Chart |
Displays plots and charts |
Bar, Scatter, Histogram, Line, and Database Line, Database Statistics
|
Report
|
Reporting model results
|
Reports Manager, Cost Stats, Item Log Manager
|
Analysis
|
Organizing and optimizing model data and results, plus launching multiple instances of ExtendSim
|
Analysis Manager, Multicore Analysis, Optimizer, Scenario Manager
|
Utilities |
Model interface, debugging, and information |
Buttons, Record Message, Memory Usage
|
Application areas
Sample applications include resource optimization for food logistics,[2] six sigma process improvement for a hospital emergency department,[3] communication systems,[4] and manufacturing facility design [5]
See also
References
External links
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