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Modifying Existing Scenarios

You can easily modify the number of VMs and hosts for the existing scenarios by changing the values in the config.properties file. For example, to change the number of VMs and hosts for the “Medium” scenario, you would modify the following properties: 
scenario.medium.vms=150
scenario.medium.hosts=25

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Enabling Disabled Scenarios

The Large and XLarge scenarios are disabled by default for stability. You can enable them by uncommenting them in the config.properties file and adding them to the scenarios.enabled list. 
# scenario.large.vms=200
# scenario.large.hosts=40
# scenario.large.complexity=4
# scenario.xlarge.vms=400
# scenario.xlarge.hosts=100
# scenario.xlarge.complexity=5

scenarios.enabled=Micro,Small,Medium,Large,XLarge

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Creating Custom Scenarios with ScenarioGenerator.java

The framework includes a powerful ScenarioGenerator.java class that allows you to create highly customized and complex scenarios. This is ideal for researchers who need to test algorithms under specific conditions. The ScenarioGenerator supports customization across three key dimensions:
  • ScenarioType: Defines the overall characteristics of the environment (e.g., HOMOGENEOUS, HETEROGENEOUS, OVERSUBSCRIBED).
  • WorkloadPattern: Simulates different application behaviors (e.g., CONSTANT, BURSTY, PERIODIC).
  • VmSizeDistribution: Controls the mix of VM sizes (e.g., UNIFORM, NORMAL, BIMODAL).