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49 Implementation visibility is ModelFileParser. All other classes of this package are only visible within the package itself. Runtime model object structure classes in parallelJavaGpssSimulator.gpss Model Partition Block FacilityEntity ... StorageEntity AdvanceBlock ... TransferBlock Model parsing object structure classes in parallelJavaGpssSimulator.gpss.parser ModelBuilder #build() : Model PartitionBuilder #build() : Partition ModelFileParser +parseFile(in fileName : String) : Model BlockBuilder #build() : Block FacilityEntityBuilder #build() : FacilityEntity ... StorageEntityBuilder #build() : StorageEntity AdvanceBlockBuilder #build() : AdvanceBlock ... TransferBlockBuilder #build() : TransferBlock Figure 13: Simulation model class hierarchies for parsing and simulation runtime Test and Debugging of the Model Parsing In order to test and debug the parsing of the GPSS model file and the correct creation of the object structure representing the GPSS model at simulation run time, the toString() methods of all classes from the runtime class hierarchy were implemented to output their properties in textual form and to recursively call the toString() methods of any sub- element contained. A test application class with a main() method was implemented to load a GPSS model from a file using the ModelFileParser.parseFile() method and to output the whole structure of the model in textual form. Using this application different
50 Implementation GPSS test models were parsed that contained all of the supported GPSS entities and the textual output of the resulting object structures was checked. These tests included checking the default values of the different GPSS block types and parsing errors for invalid model files. 5.2.2 Basic GPSS Simulation Engine The second implementation phase focused on the development of the basic GPSS simulation functionality. A GPSS simulation engine was implemented that can perform the sequential simulation of one model partition. This sequential simulation engine will be the basis of the parallel simulation engine implemented in the third phase. The classes for the basic GPSS simulation functionality can be found in the package parallelJavaGpssSimulator.gpss. The main class in this package is the SimulationEngine class that encapsulates the GPSS simulation engine functionality. It uses the runtime model object structure class hierarchy mentioned in 5.2.1 to represent the model partition and the model state in memory. The runtime model object structure class hierarchy contains classes for the GPSS block types plus some additional classes to represent other GPSS entities like Facilities, Queues and Storages. Each of these classes implements the functionality that will be performed when a block of that type is executed or the GPSS entity is used by a Transaction. Two further classes in this package are the Transaction class representing a single Transaction and the GlobalBlockReference class introduced in 5.2.1. The basic GPSS simulation scheduling is also implemented using the SimulationEngine class (a detailed description of the scheduling can be found in 5.<strong>3.1</strong>). It will generate Transactions and move them through the simulation model partition using the runtime model object structure. All block instances within this runtime model object structure inherit from the abstract Block class and therefore have to implement the execute() method. When a Transaction is moved through the model it will call this execute() method for each block it enters. Test and Debugging of Basic GPSS Simulation functionality The test application class TestSimulationApp was used to test and debug the basic GPSS simulation functionality implemented during this phase. This class contains a main()
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TRANSACTION-ORIENTED SIMULATION IN
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Table of Content II Table of Conten
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IV Table of Content 6 VALIDATION OF
Page 7 and 8: Figures VI Figures Figure 1: Ad Hoc
Page 9 and 10: Tables VIII Tables Table 1: Change
Page 11 and 12: 2 Introduction synchronisation algo
Page 13 and 14: 2 Fundamental Concepts Fundamental
Page 15 and 16: Figure 1: Ad Hoc Grid architecture
Page 17 and 18: 8 Fundamental Concepts In continuou
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Page 21 and 22: 12 Fundamental Concepts known as st
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Page 83 and 84: 74 Implementation Memory Allocation
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Page 93 and 94: 6.4 Validation 4 84 Validation of t
Page 97 and 98: … LpccEnabled=true LpccClusterNum
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Page 105 and 106: 7 Conclusions 96 Conclusions Even s
Page 107 and 108: References 98 References [1] Amin K
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[19] Krafft G. Parallelisation of T
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Appendix A: Detailed GPSS Syntax 10
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Reserved word: DEPART Syntax: [] DE
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Reserved word: SEIZE Syntax: [] SEI
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Setting: LpccClusterNumber Default
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Appendix C: Simulator log4j loggers
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Logger: parallelJavaGpssSimulator.l
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114 Appendix D: Structure of the at
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Appendix E: Documentation of select
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!"#"$$%$&"'"(!))*+,-$"./#0$! 1$"))
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!/+/.7/8$ Appendix E: Documentation
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Returns: Appendix E: Documentation
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!"#$%&''$()*)")$ +',)$-)$. #,/. !"#
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!"#$%&'()#%*+,"-*.# Appendix E: Doc
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Constructor Detail !"#$%&'$(#$)*$%+
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Validation 1.1, output of simulate:
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Validation 2, output of LP: Appendi
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Appendix F: Validation output logs
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Validation 2, output of simulate: A
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Validation 3.1, output of LP1: Appe
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Validation 4, output of LP1: Append
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simulation for time 2000) (628) 20:
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Validation 4, output of simulate: A
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(135) 19:37:56,477 Total transactio
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(68) 19:37:56,619 by the transactio
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(1295) 14:25:22,740 Simulation stop
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(68) 14:25:22,888 by the transactio
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Validation 6.2, output of LP2: (1)
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(32) (1,2) 0 765 Block: TRANSFER 0.
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