Re: [GridSim-users] help

[Marcos D. de A. <ma...@cs...>]

Hi Amrutha,

I think I understood what you need, but I am afraid you will have to  
implement that. You can extend the GridResource class in order to  
make it (i) query the policy for information about the resource  
utilised and (ii) make it request a job from whoever has it in your  
case. That would be the receiver-initiated case. For the sender- 
initiated case, you can query the GridResource for the  
ResourceCharacteristics and make the decision based on the number of  
processing elements available. Please have a look at the method  
getResourceDynamicInfo() of GridSim class:

     /**
      * Gets the GridResource dynamic fnformation
      * @param resourceID   the resource ID
      * @return An object of Accumulator containing the GridResource  
load or
      *         <tt>null</tt> if a GridResource doesn't exist or an  
error occurs
      * @pre resourceID > 0
      * @post $none
      */
     public Accumulator getResourceDynamicInfo(int resourceID)

That might be what you need. I apologise if I have not understood  
what you need.

Thanks for your interest in GridSim.

Regards,

Marcos


On 26/09/2008, at 3:20 AM, amrutha karunakaran wrote:

> hi.thanks for replying.sorry for the late reply.i actually need the  
> push(sender-initiated), pull algorithm(receiver-initiated) which is  
> used to schedule jobs across different grid resource.In sender- 
> initiated algorithms the load on the resource is calculated and  
> compared with a threshold value(i think this can be self defined)  
> if its below threshold then the job is given to that resource or  
> migrated to the other resource where the same process of  
> calculating and comparing is carried out. In receiver-initiated  
> algorithms the load on the resource is calculated and if its below  
> a certain threshold then the resources take jobs.i am sorry if its  
> not clear.i can explain again.your reply would help me a lot.
>
> Sorry forgot the difference.the difference between both is that in  
> sender initiated the sender initiates while in the receiver  
> initiated the receiver initiates.In receiver intiated the resource  
> which intends to recieves does not migrate the job as in sender.

Marcos Dias de Assuncao
Grid Computing and Distributed Systems (GRIDS) Laboratory
Department of Computer Science and Software Engineering
The University of Melbourne, Australia
Email: ma...@cs...

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