NetworkVmsExampleSimpleApp does not work

[Inverseit]

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Actual behavior

Simply running the NetworkVmsExampleSimpleApp (or NetworkVmsExampleBagOfTasksApp or NetworkVmsExampleWorkflowApp) without any changes after cloning this repository, the simulation ends earlier than expected with a default warning where a VM with running cloudlets inside.

Here are the logs:

`INFO
================== Starting CloudSim Plus 8.5.0 ==================

INFO 0.00: #Datacenter 1 is starting... INFO org.cloudsimplus.network.switches.EdgeSwitch@49b1985 is starting... INFO Broker 3 is starting... INFO Entities started. INFO 0.00: DatacenterBrokerSimple3: List of 1 datacenters(s) received. INFO 0.00: DatacenterBrokerSimple3: Trying to create Vm 0 inside #Datacenter 1 INFO 0.00: DatacenterBrokerSimple3: Trying to create Vm 1 inside #Datacenter 1 INFO 0.00: NetworkHost: Vm 0 is booting up right away in Host 0/#DC 1, since no startup delay (boot time) was set. INFO 0.00: VmAllocationPolicySimple: Vm 0 has been allocated to Host 0/#DC 1 INFO 0.00: NetworkHost: Vm 1 is booting up right away in Host 1/#DC 1, since no startup delay (boot time) was set. INFO 0.00: VmAllocationPolicySimple: Vm 1 has been allocated to Host 1/#DC 1 INFO 0.10: DatacenterBrokerSimple3: Sending Cloudlet 0 to Vm 0 inside Host 0/#DC 1. INFO 0.10: DatacenterBrokerSimple3: Sending Cloudlet 1 to Vm 1 inside Host 1/#DC 1. INFO 0.10: DatacenterBrokerSimple3: All 2 waiting Cloudlets submitted to some VM. INFO 4.10: Processing last events before simulation shutdown. INFO 4.10: DatacenterBrokerSimple3 is shutting down... INFO 4.10: NetworkVm: Requesting Vm 1 destruction on Host 1/#DC 1. Shutdown will finish immediately (since no Vm shutDownDelay was set). INFO 4.10: NetworkVm: Requesting Vm 0 destruction on Host 0/#DC 1. Shutdown will finish immediately (since no Vm shutDownDelay was set). WARN 4.10: #Datacenter 1: Vm 1 destroyed on Host 1/#DC 1. It had a total of 1 cloudlets (running + waiting). Some events may have been missed. You can try: (a) decreasing CloudSim's minTimeBetweenEvents and/or Datacenter's schedulingInterval attribute; (b) increasing broker's Vm destruction delay for idle VMs if you set it to zero; (c) defining Cloudlets with smaller length (your Datacenter's scheduling interval may be smaller than the time to finish some Cloudlets).

WARN 4.10: #Datacenter 1: Vm 0 destroyed on Host 0/#DC 1. It had a total of 1 cloudlets (running + waiting). Some events may have been missed. You can try: (a) decreasing CloudSim's minTimeBetweenEvents and/or Datacenter's schedulingInterval attribute; (b) increasing broker's Vm destruction delay for idle VMs if you set it to zero; (c) defining Cloudlets with smaller length (your Datacenter's scheduling interval may be smaller than the time to finish some Cloudlets).

INFO Simulation: No more future events

INFO CloudInformationService0: Notify all CloudSim Plus entities to shutdown.

INFO EdgeSwitch2 is shutting down... INFO
================== Simulation finished at time 4.10 ==================

                                           SIMULATION RESULTS

Cloudlet	Status	DC	Host	Host PEs	VM	VM PEs	CloudletLen	FinishedLen	CloudletPEs	StartTime	FinishTime	ExecTime
ID		ID	ID	CPU cores	ID	CPU cores	MI	MI	CPU cores	Seconds	Seconds	Seconds

Host 0 data transferred: 0 bytes Host 1 data transferred: 0 bytes NetworkVmsExampleSimpleApp finished!

Process finished with exit code 0`

Expected behavior

Cloudlets will be finished running before the VM gets destroyed. I am not sure, what the value of schedulingInterval to use or other numbers to change.

What I have tried

I tried setVmDestructionDelayFunction() on broker, setShutDownDelay() and setShutDownBeginTime() on VM, but nothing. I also tried overwriting processVmDestroy(), however, it seems like broker is getting destroyed by itself.

Specifications like the version of the project, operating system or workload file used:

OS: Mac OS Monterey, 12.6 Version: CloudSim Plus 8.5.0 JDK: 21