adding more cloudlets into a same broker on different times

[Alessandro Franci]

Hello,

I'm doing a project based on CloudSim. I'm wondering if I can submit more cloudlets into a same broker at runtime: for example, I submit 3 cloudlets at instant 200 via broker number 3, then I would like to submit other 2 cloudlets at instant 1200 via the same broker number 3. Is it possible? How can I do this?

Thank you very much
--
Alessandro Franci | +39 340 8888029 | al...@the-root.org | www.the-root.org

[Rodrigo Calheiros]

Dear Alessandro,

the Broker supplied is CloudSim package is intended to be an example.
It has only limited functionalities. By writing your own broker, you
can adjust its behavior according to your needs. For example, you can
implement a new broker that, instead of receiving a list of Cloudlets,
it receives a list containing <time, cloudlet> which the broker
interprets as the time to submit the Cloudlet.

Controlling the submission time then can be done by scheduling
internal broker events. Examples of such internal events where posted
previously in the list.

Regards,
Rodrigo

[Jeyarani Rajarathinam]

Hi,

I would like to have multiple brokers for a specific datacenter. How should i proceed? Suggest me some ideas.

 

 

With Thanks and Regards,

Jeyarani Rajarathinam,

[Rodrigo Calheiros]

Hi!

You only need to instantiate more Broker objects and supply to each of
them its own set of VMs and Cloudlets. If you want specific brokers
interacting with specific data centers, it should be passed to each
broker during its initialization.

Regards,
Rodrigo

[Jeyarani Rajarathinam]

Dear Sir,

  Thanks a lot.

 

 With Thanks and Regards,

Jeyarani Rajarathinam,

[Umar]

Hi Rodrigo,

I am trying to do a similar thing but with 3 brokers and 2 datacenters in the networking example 3 but I am getting the following error as the simulation runs.  The simulation finishes just fine but a couple of these errors still come up anyway.

Datacenter_0.processCloudletSubmit(): Exception error.
java.lang.NullPointerException
    at org.cloudbus.cloudsim.Datacenter.processCloudletSubmit(Datacenter.java:761)
    at org.cloudbus.cloudsim.Datacenter.processEvent(Datacenter.java:159)
    at org.cloudbus.cloudsim.core.SimEntity.run(SimEntity.java:406)
    at org.cloudbus.cloudsim.core.CloudSim.runClockTick(CloudSim.java:471)
    at org.cloudbus.cloudsim.core.CloudSim.run(CloudSim.java:835)
    at org.cloudbus.cloudsim.core.CloudSim.startSimulation(CloudSim.java:151)
    at org.cloudbus.cloudsim.examples.network.NetworkExample3.main(NetworkExample3.java:226)
Datacenter_0.processCloudletSubmit(): Exception error.

I have made a post on this matter already with the modified example java file and the output.  Please could you take a look and let me know if you have a solution.  Thank you in advance.

https://groups.google.com/forum/?fromgroups=#!searchin/cloudsim/issue$20with$20more$20than$202$20brokers/cloudsim/v8Hh_cKg2GA/IgAVHoU7OWYJ




Regards,
Umar

[kienlt]

Hi Rodrigo,

 

 

At DatacenterBroker Class - Cloudets are submited to the VMs through submitCloudlets method. It seems that Broker only implement a task submit cloudlet. so, Broker don't know that cloudlet has submitted previously that has finished yet.

How to resolve this problem. Please let me some idea.

 

sorry for my english not so good.

 

Best regards.

 

Kienlt.

[mehdi hosseini]

you can find an example which i attach in a previous subject (new Broker,main test and inherited cloudlet class) 

[Umar]

Has anyone else run into the same problem as me when running more than 2 brokers?

[n s]

Hello 

I want to allocate each  virtual machine cluster to one  host.i had a problem with allocated a category of VMs .

In my own class I wrote :

private static List<Vm> vmList;

public static List<List<Vm>> vmarray = new ArrayList<List<Vm>>();

for(To  the number of categories){
     int numberVm=0;                        

   for (To the number of request each category){

         numberVm  ++;                      

  }                        

   vmList=createVmList(brokerId, numberVm);

   vmarray.add(vmList);                      

   broker.submitVmList(vmList);

                     
}

And change findHostForVm method in PowerVmAllocationPolicyMigrationAbstract and allocated each vm  category that there are in vmarray  to a host if this host had capacity .

 but the outputs is not correct.

Please help me what should i do? do I need to change the class broker?

What is wrong?

Thanks a lot

[Mohamadreza Farahpour]

salm

to zamine entekhab vm behine baraie submit shodan be cloudlet koja baid to data center broker taghir ijad konim

[Caroline Namuwenje]

Hello Mohamadreza,

here on cloudsim google groups we speak english

Kind Regards 

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