The Simumaltion Parameters

The Simumaltion Parameters

The simulation parameters can be found under the settings/ folder, in the simulation_parameters.properties file. Below is a description of the available parameters:

Parameter	Type	Options/Range	Description
simulation_time	Integer	>= 1	The simulation duration (in minutes)
initialization_time	Integer	>= 0	The time needed to generate all resources, which means that the tasks offloading process starts affter it
parallel_simulation	Boolean	true or false	Enable or disable parallel simulations
update_interval	Double	>= 0.01	The interval between simulation environment events (in seconds)
pause_length	Integer	>= 0	The pause between iterations (in real seconds)
display_real_time_charts	Boolean	true or false	To display or not the simulation results in real time
auto_close_real_time_charts	Boolean	true or false	Auto close real time charts after the end of iteration
charts_update_interval	Double	>= 0.01	Interval of refreshing real time charts (in seconds)
save_charts	Boolean	true or false	Whether to save charts in .png format or not
wait_for_all_tasks	Boolean	true or false	Wait until all tasks get executed or stop the simulation on time (when the simulation time set by the user finishes)
save_log_file	Boolean	true or false	Whether to save the log file or not
clear_output_folder	Boolean	true or false	Delete the output folder at the beginning of each simulation
deep_log_enabled	Boolean	true or false	Enable or disable deep logging

• The Location Manager (mobility model) parameters:

Parameter	Type	Options/Range	Description
length	Integer	>= 1	The simulation area length (in meters)
width	Integer	>= 1	The simulation area width (in meters)
Edge_range	Integer	>= 1	The range of Edge devices (in meters)
Fog_coverage	Integer	>= 1	The raius of the area covered by each Fog server (in meters)
speed	Double	>= 0	The speed of mobile devices in meters/seconds) (0= disabled)

• The Server Manager settings:

Parameter	Type	Options/Range	Description
min_number_of_Edge_devices	Integer	>= 1	The number of Edge devices at the beginning of the simulation
max_number_of_Edge_devices	Integer	>= 1	The number of Edge devices at the end of the simulation
Edge_device_counter_size	Integer	>= 1	The growing rate in the number of devices in each iteration

• The Network Model settings:

Parameter	Type	Options/Range	Description
wlan_bandwidth	Integer	>= 1	The local area network bandwidth (in Mbps)
wan_bandwidth	Integer	>= 1	The backhaul network bandwidth (in Mbps)
wan_propogation_delay	Double	>= 0	The propagation delay (when sending data/tasks to the Cloud) (in seconds)
network_update_interval	Double	>= 0.01	The network model refresh interval (in seconds)

• The Tasks Orchestration settings:

Parameter	Type	Options/Range	Description
enable_registry	Boolean	true or false	Enabling it means that before executing a task, a container will be pulled from the registry/Cloud
enable_orchestrators	Boolean	true or false	Enabling this means that the task/offloading request will be sent to the specifed/ nearest orchestrator. Disabling this means that each device will orchestrate its owb tasks.
deploy_orchestrator	Boolean	Cloud or Fog	To deploy the orchestrator on the Cloud, Fog, or any custom location (e.g. cluster heads, the user in this case need to implement his clustering algorithm)
applications_CPU_allocation_policy	Boolean	SPACE_SHARED or TIME_SHARED	Time shared means that the tasks can be executed in same virtual machine at simae time (however this increases the simulation duration). Space shared means that the tasks are executed one after the otherby a virtual machine
tasks_generation_rate	Integer	>= 1	The number of tasks generated by each device every minute
orchestration_architectures	Boolean	Cloud_ONLY, Fog_AND_Cloud,....	The computing paradigms that are used
orchestration_algorithms	Boolean	(any algorithm name)	The algorithm used by the orchestrator to find the offloading destination

• The Energy Model parameters:

Parameter	Type	Options/Range	Description
consumed_energy_per_bit	Double	>= 0	The enregy consumed when transferring 1 bit (in wh)
amplifier_dissipation_free_space	Double	>= 0	The energy consumed by the amplifier in free space channel (in wh)
amplifier_dissipation_multipath	Double	>= 0	The energy consumed by the amplifier in multipath channel (in wh)

Learn more on how to increase the simulation accuracy, or how to decrease the simulation time from here:

How to Reduce the Simulation Time