[Announcement] CloudSim 3.0.1

Anton Beloglazov

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Oct 17, 2012, 3:46:54 AM10/17/12

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Hi All,

We've just released a new version of CloudSim: 3.0.1. This is mainly a bug fix release. The following updates have been made:

- Made the CloudletSchedulerTimeShared.getCapacity method protected, to facilitate the development of new cloudlet schedulers.

- Fixed in PeList: problem in the generics declaration.

- Fixed Issue #40: Inconsistencies on the return of Cloudlet.isCloudletFinished() and the Cloudlet status.

- Fixed Issue #35: Default behaviour of Cloudlet may lead to unnecessary usage of heap space.

- Fixed bug when searching for Cloudlets to cancel in cloudletSchedulerTimeshared

- Fixed Issue #34: Call getVm(vmId, userId) Function had swaped parameters in several parts of the Datacenter class.

- Fixed misleading comment on Example 4 that said that capacity of created VMs were different.

- Fixed comment on example 2, which said that MIPS requirements were different. Actually, they are the same.

- Fixed the ant building problem: added Flanagan's library to the classpath; updated the readme.txt

The new version can be downloaded from the usual place: http://code.google.com/p/cloudsim/downloads/list

If you find any new issues, please submit bug reports: http://code.google.com/p/cloudsim/issues/list

Enjoy!

Best regards,

The CloudSim Team

Cong Wang

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Oct 21, 2012, 10:50:00 PM10/21/12

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hi, I'm a beginner and now working for virtual network embedding, can u give me some reference or source code in virtual network embedding? If u have, please, I need it.

regards

Anton Beloglazov

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Oct 21, 2012, 10:54:22 PM10/21/12

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Hi Cong,

I'm not familiar with virtual network embedding, but I suggest you to have a look at the network package of CloudSim and the corresponding examples. You may be able to use some of that code for your purposes. The network package is described in the following paper:

http://www.cloudbus.org/papers/NetworkCloudSim2011.pdf

Best regards,

Anton

On Mon, Oct 22, 2012 at 1:50 PM, Cong Wang <cong...@gmail.com> wrote:

Cong Wang

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Oct 21, 2012, 11:06:07 PM10/21/12

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Hi Anton, Thank u very much! I will read the paper.

2012/10/22 Anton Beloglazov <anton.be...@gmail.com>

--
BEST WISHES

Seyed Saeid Masoumzadeh

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Oct 23, 2012, 2:42:15 PM10/23/12

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Dear Anton,

I read your recent publications , they are awesome...... :) ..I have a question here..

I am using PowerVmAllocationPolicyMigrationStaticThreshold in my simulation , it uses one threshold as a upper threshold but you explained just about double threshold in your publications , I kindly ask you to explain to me if I use for example THR with MMT, how the algorithm detect that it must migrate all VMs and switch to sleep mode?

Best Regards,

Anton Beloglazov

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Oct 23, 2012, 9:17:38 PM10/23/12

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Hi Seyed,

Please check the getUnderUtilizedHost method in the getUnderUtilizedHost class: http://code.google.com/p/cloudsim/source/browse/trunk/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/power/PowerVmAllocationPolicyMigrationAbstract.java#425

This method detects if a host is underloaded. The approach is described in Section 6.4 of the following paper: http://beloglazov.info/papers/2012-optimal-algorithms-ccpe.pdf

Best regards,

Anton

Seyed Saeid Masoumzadeh

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Oct 24, 2012, 10:03:19 AM10/24/12

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Dear Anton

thanks for your consideration , it was very helpful for me

fazel

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Oct 25, 2012, 12:22:38 AM10/25/12

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Hi,
Would you mind explain about interoperability and data portability features in cloudsim?

With Regards.

Anton Beloglazov

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Oct 25, 2012, 12:32:52 AM10/25/12

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Hi Fazel,

What exactly are you interested in?

Best regards,

Anton

m fazel

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Oct 25, 2012, 2:46:54 AM10/25/12

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Dear Anton,
Actually I am working on cloud @ home to implement interoperability among clouds. I would like to know how can I simulate this idea in cloudsim?

thanks for attention.
With Regards

Anton Beloglazov

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Oct 25, 2012, 6:26:09 PM10/25/12

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Hi Fazel,

I'm still not exactly sure what you need, but you can simulate multiple Clouds as multiple data centers, and manager request allocation across them by extending the DatacenterBroker class.

Best regards,

Anton

Soumen Santra

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Oct 26, 2012, 4:12:53 PM10/26/12

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Dear Anton,
Hi, I am working on cloud , try to create a dynamic load balancing algorithm. I would like to know how can I simulate this idea in cloudsim?

With Regards

Anton Beloglazov

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Oct 26, 2012, 7:11:05 PM10/26/12

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Hi Soumen,

There are a few options:

1. Distributing requests for new VM across data centers -> DatacenterBroker

2. Allocating application requests (cloudlets) to VMs -> DatacenterBroker

3. Placing VMs on physical hosts inside a data center -> VmAllocationPolicy

Best regards,

Anton

m fazel

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Oct 27, 2012, 12:18:36 AM10/27/12

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Dear Anton,
Thanks for your attention, I want to implement Opportunistic IAAS with donated hosts that can exchanges resources with commercials cloud providers like amazon. One thing that I am not sure about cloudsim is that can this simulator simulates volunteer computing of not?if yes,I want to know how can I implement this(desktop grid)? And then how can I implement interoperability between this IAAS and commercials one?

Best Regards.

Anton Beloglazov

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Oct 27, 2012, 12:39:58 AM10/27/12

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Hi Fazel,

You can probably simulate different sites contributing as separate data centers. Then manage the resource allocation across the data centers at the DatacenterBroker level. You may need to extend the Datacenter class to implement the required extra functionality, e.g., resource exchange. You can implement multiple subclasses of the Datacenter class to represent different types of participants: commercial providers, donating data centers, etc.

Best regards,

Anton

m fazel

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Oct 27, 2012, 1:08:38 AM10/27/12

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Dear Anton,
Thanks for your helpful information.

With regards.

ajithex

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Nov 5, 2012, 10:37:45 PM11/5/12

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Dear Anton,

Can you tell us more about the VmAllocationPolicy for using dynamic load balancing algorithm.

Many users in this group want to know about this.

Everyone wants to apply their own load balancing algorithm specially on vmallocation policy.

If you can describe us with short of example that will be very thankful.

Looking forward for a favourable reply.

Anton Beloglazov

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Nov 7, 2012, 3:08:34 AM11/7/12

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Hello,

VmAllocationPolicy is responsible for finding a host to place a new VM on using the allocateHostForVm method. Another method, optimizeAllocation, is responsible for adapting the current placement of VMs. The optimizeAllocation method can be called from the updateCloudletProcessing method of the Datacenter class (currently, this is only done for PowerDatacenter, but you can easily add this to the Datacenter class by modifying or extending it). The optimizeAllocation method accepts a list of VMs as an argument, and is supposed to return a migration map - a list of mappings between VMs selected for migration and destination hosts. Please see the subclasses of VmAllocationPolicy included in the power package as examples. Please also have a look at the updateCloudletProcessing method of the Datacenter class for an example of initiating VM migrations according to the received migration map.

To use your own VM placement / load balancing / consolidation algorithms, you just need to extend the VmAllocationPolicy class and implement your algorithms as the methods described above.

Best regards,

Anton

soumen santra

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Jan 12, 2013, 2:30:56 PM1/12/13

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Dear Anton,
I want to write a new algorithm for dynamic load balancing.Pls tell me where I write the code.If u have any example of code then pls send me.I think about roundrobin but I can't understand where I import this code.pls help me out.

On Saturday, October 27, 2012 4:41:49 AM UTC+5:30, Anton Beloglazov wrote:

Anton Beloglazov

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Jan 12, 2013, 6:35:31 PM1/12/13

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Hi Soumen,

Please see the pointers to where to implement algorithms in my previous email. In regard to examples, please see the examples included in the CloudSim package:

http://code.google.com/p/cloudsim/source/browse/#svn%2Ftrunk%2Fmodules%2Fcloudsim-examples%2Fsrc%2Fmain%2Fjava%2Forg%2Fcloudbus%2Fcloudsim%2Fexamples

Best regards,

Anton

Soumen Santra

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Jan 13, 2013, 1:48:14 PM1/13/13

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Hi,Anton
thanx but i understood all these examples.But where I attached my code.I am a beginner with cloudsim so can u send me ur mail once again.can u elaborate the steps how to write my new algorithm code and where?pls help me out.

Anton Beloglazov

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Jan 13, 2013, 5:02:51 PM1/13/13

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Hi Soumen,

First of all, what exactly does you algorithm do? Allocates VMs to hosts? Or cloudlets to VMs?

Best regards,

Anton

Sowmia Ramu

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Jan 14, 2013, 5:23:19 AM1/14/13

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Hello Anton ,

Sir am doing my project using cloudsim i want to generate scheduling algorithm for processing the parallel data dynamically in an heterogeneous cluster can u pls suggest me some ideas related to map reduce algorithm.

Soumen Santra

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Jan 14, 2013, 1:30:46 PM1/14/13

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Hi,Anton,
I want to implement a dynamic algorithm to balancing the load in VMs.If u have any codes please send me.Or tell me how to do this.In which class I should change the source code and how?Please help me out.

Anton Beloglazov

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Jan 14, 2013, 6:22:15 PM1/14/13

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Hi Soumen,

As I wrote earlier, there are a few options to implement algorithms, for example:

1. Distributing requests for creating new VMs across data centers -> DatacenterBroker

2. Allocating application requests (cloudlets) to VMs -> DatacenterBroker

3. Placing VMs on physical hosts inside a data center -> VmAllocationPolicy

4. Scheduling VMs on a host -> VmScheduler

5. Scheduling cloudlets within a VM -> CloudletScheduler

Best regards,

Anton

Soumen Santra

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Jan 16, 2013, 12:59:39 PM1/16/13

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Dear Anton,
can you send changed code of any one of ur mentioned example??pls help me out.

Anton Beloglazov

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Jan 16, 2013, 4:56:16 PM1/16/13

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Hi Soumen,

What do you mean by changed code?

Best regards,

Anton

Soumen Santra

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Jan 17, 2013, 2:01:03 PM1/17/13

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Hi,Anton,
Actually I want to implement FCFS or shortest job first or roundrobin scheduling algorithm.But I don't know where I write down the code.Please send me any one of the above mentioned code and the process how to run that?please help me out.

Neda Maleki

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Jan 18, 2013, 9:44:05 AM1/18/13

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Hi soumen

i answered instead Anton, i apologize. if u want to write for eg. SJF u should change policy of the broker. in cloudsim, the broker policy is compeletely abstract. u can work on broker policy in this way that this entity, sort the jobs in short to long the submit them to hosts to executing. for vms on hosts the cloudsim both apply RR and FCFS so u can use one of them.

Cheers

Neda

Soumen Santra

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Jan 18, 2013, 2:13:36 PM1/18/13

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Hi Neda,
What is the name of the class where I change the code?or Will I write a new class for SJF.If you have the code then please send me.Please help me out.
Here I send the roundrobin code but I can't understand how to and where I import it in cloudsim to run it.
Here the code :

package org.cloudbus.cloudsim.examples;

import java.util.List;


import org.cloudbus.cloudsim.DatacenterBroker;
import org.cloudbus.cloudsim.DatacenterCharacteristics;
import org.cloudbus.cloudsim.Log;
import org.cloudbus.cloudsim.Vm;
import org.cloudbus.cloudsim.core.CloudSim;
import org.cloudbus.cloudsim.core.CloudSimTags;
import org.cloudbus.cloudsim.core.SimEvent;

public class RoundRobinDatacenterBroker extends DatacenterBroker {

	public RoundRobinDatacenterBroker(String name) throws Exception {
		super(name);
	}


	@Override
	protected void processResourceCharacteristics(SimEvent ev) {
		DatacenterCharacteristics characteristics = (DatacenterCharacteristics) ev.getData();
		getDatacenterCharacteristicsList().put(characteristics.getId(), characteristics);

		if (getDatacenterCharacteristicsList().size() == getDatacenterIdsList().size()) {
			createVmsInDatacenter(getDatacenterIdsList());
		}
	};

	protected void createVmsInDatacenter(List<Integer> datacenterIds) {

		// send as much vms as possible for this datacenter before trying the next one
		int requestedVms = 0;
		int i = 0;
		for (Vm vm : getVmList()) {

			int datacenterId = datacenterIds.get(i++ % datacenterIds.size());
			String datacenterName = CloudSim.getEntityName(datacenterId);

			if (!getVmsToDatacentersMap().containsKey(vm.getId())) {
				Log.printLine(CloudSim.clock() + ": " + getName() + ": Trying to Create VM #" + vm.getId() + " in " + datacenterName);
				sendNow(datacenterId, CloudSimTags.VM_CREATE_ACK, vm);
				requestedVms++;
			}
		}


		setVmsRequested(requestedVms);
		setVmsAcks(0);
	};
}

Is there any error please modify it and send me again.
Thanx.

Nirmala Suresh

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Jan 19, 2013, 1:14:04 AM1/19/13

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Dear Anton Sir,

I have started my research and I would like to know about the cloudsim. Please suggest me in this regard whether can i use cloudsim to find the performance of an application in virtual machine.

Is it possible to get the result by running the application?

Please suggest me.

Thanks,
Nirmala Suresh

Anton Beloglazov

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Jan 19, 2013, 1:23:08 AM1/19/13

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Hi Nirmala,

CloudSim is a simulator - you cannot run real application on it. Please also refer to the FAQ for more information: http://code.google.com/p/cloudsim/wiki/FAQ

Best regards,

Anton

Munavvara Tahaseen

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Jan 19, 2013, 11:05:48 PM1/19/13

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Hi Anton,

Is it possible to run a real application in Anekha? If you have any details regarding Anekha can you please share. I am doing my M.Tech project on cloud. Coding part is almost complete in java. I want to deploy the application on some cloud. I thought cloudsim could be used for that purpose. But your answer to Nirmala made it clear that it can't be. Please suggest me a solution.

Thanks and Regards,

M.Tahaseen

Anton Beloglazov

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Jan 20, 2013, 5:45:33 AM1/20/13

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Hi Munavvara,

Yes, you can use Aneka to run real applications. I haven't used it myself, but you can find some information about it here: http://www.manjrasoft.com/products.html

Best regards,

Anton

Munavvara Tahaseen

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Jan 20, 2013, 11:46:14 PM1/20/13

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Thanks a lot Anton.

Regards,

M.Tahaseen

Message has been deleted

Deepak Gupta

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Jan 21, 2013, 12:36:19 AM1/21/13

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hello sir

i am Deepak studying M.Tech degree

can you tell me some cloud computing problems which are never implemented before or hint me something which is new so that i will able to find the problem easily

please help me someone

thanks

On Wednesday, 17 October 2012 13:16:54 UTC+5:30, Anton Beloglazov wrote:

Fadi Alhaddadin

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Jan 21, 2013, 2:01:24 AM1/21/13

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Hey Deepak,

I am currently working on power efficient cloud infrastructure ! power consumption is one of the major issues in cloud computing.

Fadi Alhaddadin

On 21/01/2013, at 6:34 PM, Deepak Gupta <mnitd...@gmail.com> wrote:

Harry Khan

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Jan 21, 2013, 3:43:37 AM1/21/13

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Hello Anton

I'm looking into changing the BrokerData class in CloudSim to provide a round robin style scheduling, is there any code that shows how this is done? Or perhaps other scheduling methods.

Thanks a lot

Harry

Anton Beloglazov

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Jan 21, 2013, 4:40:36 AM1/21/13

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Hi Harry,

Unfortunately, I don't have any extra code apart from the default implementation of DatacenterBroker included in CloudSim. Please read the code and modify it in the way you need.

Best regards,

Anton

SowSanura

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Jan 21, 2013, 7:12:58 AM1/21/13

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Hi Anton,

I have installed cloudsim 2.1 successfully but in cloudsim 3.0.1 am getting two errors in source package org.cloudbus.cloudsim.power and org.cloudbus.cloudsim.util. Am new to cloudsim sorry if my doubt is silly .

Thanks & Regards,

Sowmia Ramu.

Deepak Gupta

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Jan 21, 2013, 8:00:59 AM1/21/13

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Hey Fadi

Thanks for your reply

Actually i am new to CloudSim...and i just cant find out the exact problem for getting optimize result after simulating it

What can i do such that, that tends to complete my Dessertation

I have studied many research paper like VM Migration etc...

and still trying

Anton Beloglazov

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Jan 21, 2013, 5:28:06 PM1/21/13

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Hi Sowmia,

You may need to install the Flanagan Math library using the following script:

http://code.google.com/p/cloudsim/source/browse/trunk/modules/cloudsim/scripts/install-flanagan.sh

Best regards,

Anton

Sowmia Ramu

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Jan 22, 2013, 1:18:22 AM1/22/13

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Hi Anton,

Thanks for the reply I have installed flanagan and my errors got cleared but while running one of the example file am getting this error,

java.lang.UnsupportedClassVersionError: org/cloudbus/cloudsim/CloudletScheduler : Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)

at java.lang.ClassLoader.defineClass(ClassLoader.java:615)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

Could not find the main class: org.cloudbus.cloudsim.examples.CloudSimExample2. Program will exit.

Exception in thread "main" Java Result: 1

Am I need to install Ant too for resolving this.

Anton Beloglazov

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Jan 22, 2013, 1:21:06 AM1/22/13

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Hi Sowmia,

You probably need to recompile the whole source code. Try to use Ant.

Best regards,
Anton

Badis Hammi

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Jan 22, 2013, 3:16:02 AM1/22/13

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I thinl it is java version compatibility problem (between Java and Javac). try to configure your IDE with 1.7 java version.

best regards.

badis

Soumen Santra

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Jan 22, 2013, 3:19:15 AM1/22/13

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Can anyone send me code of any other scheduling algorithm except FCFS AND ROUNROBIN? pls help me out.

Soumen Santra

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Jan 22, 2013, 4:11:40 AM1/22/13

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Please give me the following questions:
1.What do you mean by brokerId?
2.What is the relationships between brokerId and vm?
3.what is vmm in CloudsimExample7?
4.What is cloudlet? Is cloudlet and job both same?
5.What is length parameter in CreateCloud function?

Please help me out anyone.

Sowmia Ramu

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Jan 22, 2013, 4:34:04 AM1/22/13

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Hi Anton,

I have downloaded Ant but am confused in which part of the cloudsim directory I should place it.

Sowmia Ramu

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Jan 22, 2013, 4:35:47 AM1/22/13

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Hi Badis Hammi I'll try for it.

Anton Beloglazov

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Jan 22, 2013, 5:14:51 AM1/22/13

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You need to install it: http://ant.apache.org/manual/install.html

Best regards,

Anton

badis hammi

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Jan 22, 2013, 5:21:27 AM1/22/13

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Hi Cloudsim users,
is there any Cloudsim method that allows to get CPI (cycle per instruction)?
I have another question about the resource utilization that we can get (other than CPU, BW and RAM)

Thanks a lot.
Friendly
Badis

Soumen Santra

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Jan 22, 2013, 6:00:11 AM1/22/13

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Hi Anton,
I have implemented roubrobin algorithm for datacenter broker
if I choose 3 vms and 5 cloudlets then each vm took those cloudlets averagely but I want to do it circularly what actually happen in roundrobin.I want 10 cloudlets allocated in 3 vms randomly.Please tell me how to do this? here my output like this for my code:

========== OUTPUT ==========
Cloudlet ID    STATUS    Data center ID    VM ID        Time    Start Time    Finish Time
    2        SUCCESS        3            1            199.9        0.1            200
    0        SUCCESS        2            0            320        0.1            320.1
    3        SUCCESS        2            0            320        0.1            320.1
    1        SUCCESS        2            2            320        0.1            320.1
    4        SUCCESS        2            2            320        0.1            320.1

Anton Beloglazov

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Jan 22, 2013, 6:23:43 AM1/22/13

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Hi Soumen,

To change the way cloudlets are submitted to VMs, you need to modify the submitCloudlets() method of the DatacenterBroker class:

http://code.google.com/p/cloudsim/source/browse/trunk/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/DatacenterBroker.java#341

Best regards,

Anton

chinnu edwin

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Jan 25, 2013, 1:30:13 PM1/25/13

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Hello Anton,

Please explain me how to do conservative backfilling scheduling for cloudlets in federated cloud environment?
How to calculate SLA violation based on MIPS in federated cloud environment?
Also how to decrease SLA violation based on MIPS using two threshold based VM provisioning algorithm in federated cloud environment?
can u explain two threshold based VM provisioning algorithm (which is used to improve profit and SLA violation of cloud providers) ?

Regards,
Chinnu

--
Regards,
Chinnu Edwin A

Soumen Santra

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Jan 29, 2013, 3:43:23 AM1/29/13

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Hi Neda,
Thanx for your reply.Which class working for broker policy?I want to implement the code but I can't found where is the code written for RR/FCFS/SJF?

On Fri, Jan 18, 2013 at 9:44 AM, Neda Maleki <nedama...@gmail.com> wrote:

Soumen Santra

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Jan 29, 2013, 3:52:13 AM1/29/13

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Hi Anton,
Thanx for your reply.can you please tell me which classes maintaining RoundRobin,FCFS,SJF algorithms in cloudsim3.0.Please help me out.

divya B

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Jan 29, 2013, 1:01:48 PM1/29/13

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dear sir

i want to send an event from datacenter to datacenter

and one more for datacenter to broker.

we have send method which include getid, delay , tag,data.

then how i came to know where this event is scheduled.

how to differentiated a internal event and external event .

sorry if i asked silly question

thanks

Anton Beloglazov

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Jan 29, 2013, 6:26:58 PM1/29/13

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Hi Divya,

Events are differentiated by tags. When you send an event, you specify the ID of the receiver. When it receives the event, it checks the tag to determine the event type. Then, the method for handling that type of events should be called.

Best regards,

Anton

Annu Singh

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Jan 30, 2013, 12:55:48 AM1/30/13

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Hello,

I am working on a project where I need to migrate vms at inter-pod and intra-pod level, the pod here refers to pod of fat tree topology. Now the Cloudsim has the NetworkConstants file where I can specify the number of core, aggregate and root switches, so does cloudsim automatically generate fat tree topology?
And can we uniquely identify the individual switches, the hosts connected to theses switches and their interconnections?

saeedeh mehri

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Feb 5, 2013, 4:37:37 AM2/5/13

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Hi to all.

I have problem in running org.cloudbus.cloudsim.examples.network.datacenter.NetworkExample1.java

I have an error:

"Starting NetworkExample1...
Initialising...
Topology file: topology.brite
Problem in processing BRITE file. Network simulation is disabled. Error: topology.brite (The system cannot find the file specified)
Starting CloudSim version 3.0

..."

Can help me? why the system can not find topology file?

thank you

On Mon, Oct 22, 2012 at 6:24 AM, Anton Beloglazov <anton.be...@gmail.com> wrote:

vatsal patel

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Feb 17, 2013, 11:39:09 AM2/17/13

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How you implement RR in cloudsim??

Thanks

Vatsal PAtel

kienlt

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Feb 28, 2013, 10:53:19 PM2/28/13

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Hi Anton,

When I submitted the cloudlet to vms in Datacenter using Throttled load balanced. Then, vm is set its status "Busy".

My question is how to know cloudlet submitted to the vm that has been executed to set the state of the virtual machine "Available."

Earlier, when initializing the virtual machine I set up the initial state of the vms is "Available"

I wish that i receive your helping !

Thanks

Best regards.

kienlt.
Vào 06:26:58 UTC+7 Thứ tư, ngày 30 tháng một năm 2013, Anton Beloglazov đã viết:

pallavi gupta

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May 17, 2013, 3:18:43 AM5/17/13

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Hi Anton Sir,

Is cloudlet Priority is already Implemented in cloudsim? I have change the length of each cloudlet (like 100,200,400,300) .When I run it , the requests is submitted like small length request submitted before the large length request.But i am unable to find the appropriate function or place where this 'length' comparison was done.How the cloudlets are scheduled and in which class?

Advance Thanks,

The cloud sim Team.

awais shahg

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Jun 24, 2013, 1:47:31 PM6/24/13

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hi Anton Sir

im the New User of Cloud sim .. Plz tell me how 1 Broker request to another Broker Plz help me

S Hm

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Sep 23, 2013, 1:32:55 AM9/23/13

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I would to know maximum and minimum power consumption of dual Core or Quart Core machine in org.cloudbus.cloudsim.examples.power.planetlab.

Kobra Bagheri

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Sep 26, 2013, 12:50:42 AM9/26/13

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hi Anton Sir

please help me for hibernate node or host in data center if it is under load .

On Wednesday, October 17, 2012 11:16:54 AM UTC+3:30, Anton Beloglazov wrote:

Kobra Bagheri

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Sep 26, 2013, 12:54:23 AM9/26/13

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hi Anton Sir

i work in decrease energy consumption in data grid but gridsim not energy aware so i use cloudsim for simulation

is that true?

On Wednesday, October 17, 2012 11:16:54 AM UTC+3:30, Anton Beloglazov wrote:

Message has been deleted

Pratik pandya

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Dec 19, 2013, 12:02:29 AM12/19/13

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Hi,

i am working on Affinity Aware method for virtual machine allocation for my research but i don't know how can we group the virtual machine in cloudsim?

Fazel Mohammadi

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Dec 27, 2013, 7:47:04 AM12/27/13

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Dear Anton,
I want to write a new reinforcement learning algorithm for dynamic load balancing in cloud computing. I would like simulate it in cloudsim. I have a problem in programing Broker code in cloudsim. Please tell me where I write the Reinforcement Learning Algorithm code for Broker. If you have any example of code then pls send me.please help me out.

Thanks
Fazel Mohammadi

Fazel Mohammadi

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Jan 1, 2014, 7:53:03 AM1/1/14

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Dear Anton,
I want to write a new reinforcement learning algorithm for dynamic load balancing in cloud computing. I would like simulate it in cloudsim. I have a problem in programing Broker code in cloudsim. Please tell me where I write the Reinforcement Learning Algorithm code for DatacenterBroker. If you have any example of code then pls send me.please help me out.

Thanks
Fazel Mohammadi

Ren Ernest

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Feb 6, 2014, 5:29:21 AM2/6/14

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Hi Anton,

I am a university student from Singapore. Currently I am doing a project about data center broker based on cloudsim, but as a beginner, I really do not know to start. Can you give me some advise on these? Or do you have any materials I can learn from? Thank you so much for your help.

Yours sincerely,

Ernest

sudharani savadi

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Feb 11, 2014, 11:03:28 PM2/11/14

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Hi Anton,

I am working on cloudsim3.0.3 and my requirement is,I need to store a user data into cloudsim. I tried to store data in a file with help of CloudHardDrivedisk class but I m getting nullPointerException. It would be kind if you help me to find the solution.

Here is the stacktrace:

Capacity= 50.0Available= 50.0

Exception in thread "main" java.lang.NullPointerException

at org.cloudbus.cloudsim.FileAttribute.<init>(FileAttribute.java:73)

at org.cloudbus.cloudsim.File.<init>(File.java:64)

at org.cloudsim.CloudFile.<init>(CloudFile.java:18)

at org.cloudsim.CloudSim.<init>(CloudSim.java:33)

at org.cloudsim.CloudSim.main(CloudSim.java:67)

With Regards:

Sudharani

priyank sharma

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Feb 16, 2014, 1:41:08 AM2/16/14

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hi Anton !!!
will u please tell me how to store and retrieve a file in cloudsim3???

manoj kumar

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Feb 20, 2014, 1:46:05 AM2/20/14

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Hi Every one ,

I am M.tech student .i am new for Cloudsim . i am doing project in Data staging algorithm using Cloudsim. already i did this project by using normal java coding .now i want to do this project using cloudsim. Any body can give idea how to do this project using Cloudsim.

Waiting for your Replies......

Thank you ,

Regards,

Manoj

mokhtar alwrafi

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Jun 2, 2015, 3:02:11 AM6/2/15

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Hi

How can modify any algorithms in cloudanalyst

jigna acharya

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Sep 20, 2015, 1:29:38 AM9/20/15

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hi,
i am beginner to use cloudsim and i want to implement load balancing algorithm in cloudsim can u help me how to do coding in cloudsim for load balancing

Tahereh Pirfalakeh

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Sep 23, 2015, 4:30:27 AM9/23/15

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hi

I am sorry, I was not able to do this.

Dinesh Raja

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Sep 30, 2015, 8:00:04 AM9/30/15

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Dear Anton,

I am new to cloudsim. i have some question about cloudsim.
Is it possible to simulate DDOS attack on cloudsim?
Give some tutorial regarding this.

With Regards,

Dinesh

priyank sharma

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Oct 2, 2015, 8:48:14 AM10/2/15

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Hello Dear All,

I have same query....

Please help me out

soud

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Oct 11, 2015, 11:01:21 PM10/11/15

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hello.

i am working newly in the area of cloud computing using clousim for big data applications. could you please share ideas which of the classes should i extend. thanks

Best regards.

Evangeline Ashiki

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Oct 19, 2015, 12:38:34 AM10/19/15

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hi,

i have doubt ,i could not change the cloud analyst gui in netbeans. i make a changes in d program but it saved in pgm but didnt reflect it in gui.

Shaden M

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Oct 28, 2015, 5:34:45 AM10/28/15

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Hi Dr. Anton

I need to know how DVFS example work because I use it as benchmark in my study please. I tried to trace it but I don't find how it's differ than first fit without DVFS?

thanks a lot

Shaden M.

Akhilesh Sehgal

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Nov 18, 2015, 2:45:22 AM11/18/15

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Hi Anton,

I am working on scheduling of cloudlets in cloudsim based on priority and deadline. What I have done is I have assigned priority and deadline to the cloudlet,

I need your help in scheduling a coudlet based on priority and deadline instead on length of the cloudlet.

Can you please help me for this? I will be very thankful to you. Need to complete this asap.

Thanks

Akhilesh Sehgal

Binal Parekh

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Jan 31, 2016, 8:49:12 AM1/31/16

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i used gettotalutlizationofcpu() method to for vm but every time it return 0 so how to use this method?

and i am using cloudlet.getutilizationofcpu() method but every it give different value

SATYA

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Oct 6, 2016, 3:41:20 AM10/6/16

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On Wednesday, October 17, 2012 at 12:46:54 AM UTC-7, Anton Beloglazov wrote:

Dear Anton Beloglazov

This is Satya Deo , a Ph. D student at MNNIT Allahabad. Sir ,first of all thanks for your helping hand on this group, i am in 3rs semester and have little bit aware with cloudsim have also done addition/modification in VmAllocation Policy and Broker's SubmitCloudlet for scheduling cloudlet,I have also written complete code for task scheduling using pso successfully and now trying to implement in cloudsim. Sir i need your suggestion regarding "research topic in cloud computing (that can be implemented at Cloudsim)" for My Ph.D thesis.please suggest me some new problem and paper,i am not good at networking.

Thanks and Regard

Satya Deo

sdku...@gmail.com

luop...@gmail.com

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Nov 17, 2016, 8:19:26 AM11/17/16

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hi, according to you suggestion, i add some code on optimizeAllocation, updateCloudletProcessing and Datacenter. imgration happened, but a cloudlet belong to the imgrated vm has disappear, I use cloudsimexample3 can you help me?

在 2012年11月7日星期三 UTC+8下午4:08:34，Anton Beloglazov写道：

1.png

Message has been deleted

e.safd...@gmail.com

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Feb 13, 2017, 10:46:53 AM2/13/17

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Hi

I need to example of LRMMT class step by step define .

very very thanks

yagob golami

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Feb 14, 2017, 1:03:12 PM2/14/17

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Thanks so much

huned materwala

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Sep 10, 2017, 5:14:50 AM9/10/17

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Greetings,

I want to run best fit decreasing algorithm for VM allocation policy, using MAD, LR, IQR and thr as host detection techniques and using MMT, RS, MU and Mc as VM selection policies. I want to find energy consumption for all the Host detection and VM selection Methods.

Also, ow to know the CPU architecture used and the number of hosts and VMs. Also how to change this configuration. Please explain in detail as I am new o Cloud environment.

On Wednesday, January 30, 2013 at 3:26:58 AM UTC+4, Anton Beloglazov wrote:

Vikram Patalbansi

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May 11, 2018, 12:02:12 AM5/11/18

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Thanks for sharing

Sousou housou

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Jun 2, 2018, 10:56:55 AM6/2/18

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Dear Anton,

please tell me how can I integrate xampp with cloudsim

thank you.

Le mardi 22 janvier 2013 11:14:51 UTC+1, Anton Beloglazov a écrit :

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