Dear,

1 - You will make your own VM allocation class extended from VmAllocationPolicy  class.

2 - you can change the function of creating the datacenter by overridding or make new datacenter class if there exist other changes.

You can look at NetworkCloudSim which is extended to the CloudSim, at this extention the author made his own VM allocation policy, and you cam make the same.

This link is to the paper talk about the simulator:

https://www.researchgate.net/publication/220896015_NetworkCloudSim_Modelling_Parallel_Applications_in_Cloud_Simulations

This paper, I attched it.

Regards.

Conference Paper NetworkCloudSim: Modelling Parallel Applications in Cloud Simulations

Thank you Ahmed Hassan Abase Sir.

Can I  make the changes just by using VmAllocationPolicy class. Don't I need to change the scheduling policies mentioned in DatacenterBroker class?

Dear,

If you change in the VmAllocationPolicy class only, so you do not need to make any other change.

Best wishes,

Regards.

Okay, but i need to map the Vms to the host present in datacenter, in my research project, so that can be done with the required changes in VmAllocationPolicy class only?

Dear,

1- By make/update your VM allocation policy class, you do not need to make any thing except the spec., of hosts and VM that will be allocated on it.

2- If you want to specify VM to target Host not else, you can use the simple VM allocation policy on creating the data center, then you can use the following functions:

allocateHostForVm(Vm vm, Host host) 

void deallocateHostForVm(Vm vm)

from VmAllocationPolicySimple class.

Best wishes,

Regards.

thank you for your valuable suggestions.

i have changed the method public boolean allocateHostForVm(Vm vm) for implementing my vm allocation policy, but when i am running the same using

datacenter = new Datacenter(name, characteristics, new VMallocationtree(hostList), storageList, 0);

i am not getting the desired results;

it is showing the result as follows:

0.1: Broker: Creation of VM #0 failed in Datacenter #2

0.1: Broker: Creation of VM #1 failed in Datacenter #2

0.1: Broker: none of the required VMs could be created. Aborting

Broker is shutting down...

Simulation: No more future events

CloudInformationService: Notify all CloudSim entities for shutting down.

Datacenter_0 is shutting down...

Broker is shutting down...

Simulation completed.

Simulation completed.

========== OUTPUT ==========

Cloudlet ID STATUS Data center ID VM ID Time Start Time Finish Time

org.cloudbus.cloudsim.examples.CloudSimExample10 finished!

and i m not getting, why creation of VMs are failed..

please help.

Dear,

Look at the spec., of VM creation and spec., of Host (such as, Ram,Storage,mips,

Regards.

How to design own VM migration policy?

Hi everyone,I am doing my phd research on cloud computing and for the same i m working on cloudsiom simulator and wants to implement my own vm migration policy in cloudsim. From where i have to start?  any help would be appreciated.