Simulation and modelling 7 verification
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Simulation and Modelling 7 – Verification. Yumarsono Muhyi STMIK Supra Even Semester 2008/2009 June 11th, 2009. About Me. Yumarsono Muhyi Head of Information System Dept., STMIK Supra Undergraduate of Electrical Engineering, Telecommunication - ITB

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Simulation and Modelling 7 – Verification

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Simulation and modelling 7 verification

Simulation and Modelling7 – Verification

Yumarsono Muhyi

STMIK Supra

Even Semester 2008/2009

June 11th, 2009


About me

About Me

  • Yumarsono Muhyi

  • Head of Information System Dept., STMIK Supra

  • Undergraduate of Electrical Engineering, Telecommunication - ITB

  • Management Magister, Sistem Informasi - UPN (final semsester dan thesis)

  • Research Field: Computation, Operational Research, Optimation, Simulation

  • [email protected] (email and chat)

  • [email protected] (mostly chat)

  • 0856-9117-2669 / (021) 93131-633


Lessons

Lessons

  • Introduction

  • Divide-and-Conquer Approach

  • Animation

  • Advancing the Simulation Clock

  • Writing to an Output File


1 introduction

1. Introduction

  • Verification:

    • “Building the model correctly.”

    • Verification is the continuous process of insuring that the model operates as intended.

    • Verified model:

      • Include all of the components specified under the system definition phase.

      • Actually be able to run without any errors or warnings.

  • Validation:

    • “Building the correct model.”

    • Validation is the process of insuring that the model represents reality.


2 divide and conquer approach

2. Divide-and-Conquer Approach

  • Anything but the simplest system will require a significant amount of model programming.

  • Simulation programs can benefit from the divide-and-conquerapproach.

  • This means that the practitioner should break the larger, more detailed system modelinto a smaller, simpler, perhaps higher-level model.

  • The smaller, simpler model will be correspondinglyeasier to debug.


3 animation

3. Animation

  • Animation: to visualize what the program is doing makes it easier to detect errors in the program.

  • Animationcan be used for model verification in many different ways:

    • Using different entity pictures for different types of entities

    • Following the entities through the system

    • Changing entity pictures

    • Displaying global variables or entity attribute values

    • Displaying plots of global variables or entity attributes

    • Displaying levels of system statistics


4 advancing the simulation clock event by event

4. Advancing the Simulation Clock Event by Event

  • Simulation model animations are usually designed to run in compressed time.

  • To allowpractitioners to debug their models under controlled circumstances, most simulation software packageshave VCR-like controls.

  • These allow the practitioner not only to step through the model but also to fastforward to the part of the model the practitioner is interested in viewing.


5 writing to an output file

5. Writing to an Output File

  • What to record (output file type):

    • Event List File

    • Variable or Attribute Output File


The end

The End

  • Discussion.

  • Question and answer.

  • Case study.


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