error in running examples from the power package

[anitha Y]

sir,

i got the errors as follows after running these command,

C:\Program Files\cloudsim-3.0.3>java -classpath jars\cloudsim-3.0.3.jar;jars\fla

nagan.jar;examples org.cloudbus.cloudsim.examples.power.planetlab.LrMc

Initialising...

java.lang.NullPointerException

        at org.cloudbus.cloudsim.examples.power.planetlab.PlanetLabHelper.create

CloudletListPlanetLab(PlanetLabHelper.java:49)

        at org.cloudbus.cloudsim.examples.power.planetlab.PlanetLabRunner.init(P

lanetLabRunner.java:71)

        at org.cloudbus.cloudsim.examples.power.RunnerAbstract.<init>(RunnerAbst

ract.java:95)

        at org.cloudbus.cloudsim.examples.power.planetlab.PlanetLabRunner.<init>

(PlanetLabRunner.java:55)

        at org.cloudbus.cloudsim.examples.power.planetlab.LrMc.main(LrMc.java:42

)

The simulation has been terminated due to an unexpected error

i already downloade flangan.jar file in/cloudsim/jars directory

iam using windows7, jdk1.6

pls help me

--
regards,

anitha

[gagan bopanna]

The error is occurring because your program is not able to locate the workload  folder from which the program picks up the workload files in order to create cloudlets for these files...figure it out...If you can't then try this:
Find the inputFolder variable in the example that u r trying to run...Instead of the relative path that they have used to get the workload folder, use a full pathname instead

Ex: "C:\home\workspace\cloudsim-3.0.3\examples\workload\planetlab".

In your error message you see

at org.cloudbus.cloudsim.

examples.power.planetlab.PlanetLabHelper.create

CloudletListPlanetLab(PlanetLabHelper.java:49)

here file.length is null and if you define the right path to the workload folder it should be equal to the number of files in that folder. Once you define the path you can use a print statement on this value to see if its working.

All these problems can be avoided if you organize the project correctly.

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[anitha Y]

i changed the path name as shown below 

===========

package org.cloudbus.cloudsim.examples.power.planetlab;

 

import java.io.IOException;

 

/**

 * A simulation of a heterogeneous power aware data center that applies the Local Regression (LR) VM

 * allocation policy and Maximum Correlation (MC) VM selection policy.

 *

 * This example uses a real PlanetLab workload: 20110303.

 *

 * The remaining configuration parameters are in the Constants and PlanetLabConstants classes.

 *

 * If you are using any algorithms, policies or workload included in the power package please cite

 * the following paper:

 *

 * Anton Beloglazov, and Rajkumar Buyya, "Optimal Online Deterministic Algorithms and Adaptive

 * Heuristics for Energy and Performance Efficient Dynamic Consolidation of Virtual Machines in

 * Cloud Data Centers", Concurrency and Computation: Practice and Experience (CCPE), Volume 24,

 * Issue 13, Pages: 1397-1420, John Wiley & Sons, Ltd, New York, USA, 2012

 *

 * @author Anton Beloglazov

 * @since Jan 5, 2012

 */

public class LrMc {

 

   /**

    * The main method.

    *

    * @param args the arguments

    * @throws IOException Signals that an I/O exception has occurred.

    */

   public static void main(String[] args) throws IOException {

      boolean enableOutput = true;

      boolean outputToFile = false;

     

 

String inputFolder = LrMc.class.getClassLoader().getResource("C:/Program Files/cloudsim-3.0.3/examples/workload/planetlab").getPath();

instead of

String inputFolder = LrMc.class.getClassLoader().getResource("workload/planetlab").getPath();

      String outputFolder = "output";    

      String workload = "20110303"; //PlanetLab workload

      String vmAllocationPolicy = "lr"; // Local Regression (LR) VM allocation policy

      String vmSelectionPolicy = "mc"; // Maximum Correlation (MC) VM selection policy

      String parameter = "1.2"; // the safety parameter of the LR policy

 

      new PlanetLabRunner(

                  enableOutput,

                  outputToFile,

                  inputFolder,

                  outputFolder,

                  workload,

                  vmAllocationPolicy,

                  vmSelectionPolicy,

                  parameter);

   }

 

}

=============

but again i got the error 

C:\Program Files\cloudsim-3.0.3> java -classpath jars\cloudsim-3.0.3.jar;jars\fl

anagan.jar;examples org.cloudbus.cloudsim.examples.power.planetlab.LrMc

Exception in thread "main" 

java.lang.NullPointerException

        at org.cloudbus.cloudsim.examples.power.planetlab.LrMc.main(LrMc.java:37

)

--
regards,

anitha

[gagan bopanna]

just use inputFolder= "C:/Program Files/cloudsim-3.0.3/examples/workload/planetlab"

[Binal Parekh]

i am getting nullpointerException error at cloudsim.startsimulation

i declared all enetities and packages before cloudsim.startsimulation but still this error i dont kknoow why ..plz help me 

[Jitendra Verma]

Replace "String inputFolder = GMMT.class.getClassLoader().getResource("workload/planetlab").getPath();" with

String inputFolder = System.getProperty("user.dir") + "/examples/workload/planetlab";

On using this line of code, the simulation programme will remain valid every operating system.

[punit gupta(10303441)]

thanks it worked

[Masoud Nasirinezhad]

Thank you for your help