Re: [GridSim-users] grid sim simulation.plz help me sir its very urgent.

[Marcos D. de A. <mar...@gm...>]

Dear Vishnu Soni,

I believe your question has already been answered. Please find below
the text of the e-mail that I have sent to you. The code excerpt may
help you implement the methods you require to submit a group of
Gridlets to a GridResource at once.

Regards,

Marcos

----------------------------

I am not testing the code below, but it should work more or less as
described in this email. In the entity that submits the jobs you
implement a method that packs the Gridlets in a list and schedules an
event to be received by the GridResource. The method should contain
more or less the following:

// Creates the list
LinkedList<Gridlet> jobList = new LinkedList<Gridlet>();

// and adds the Gridlets to it
jobList.add( ... );

// Create the event tag PACK_OF_GRIDLETS somewhere
send(super.output, delay, PACK_OF_GRIDLETS, new IO_data(jobList,
jobList.size() * size_of_one_job, resourceID, netServiceLevel);

Then extend GridResource class and implement the method
processOtherEvent(Sim_event ev), which will be more or less as
follows:

protected void processOtherEvent(Sim_event ev) {
       if(ev.get_tag() ==  PACK_OF_GRIDLETS) {
    // get the list of Gridlets
    LinkedList<Gridlet> jobList = (LinkedList<Gridlet>)ev.get_data();
        // for each gridlet, makes a submission to the resource itself
    for (Gridlet gl : jobList) {
         processGridletSubmit(gl, false);
    }
 } else {
     super.processOtherEvent(ev);
 }
}

And the processGridletSubmit() should look like:

private void processGridletSubmit(Gridlet gl, boolean ack) {
       try {

          // checks whether this Gridlet has finished or not
          if (gl.isFinished()) {
              String name = GridSim.getEntityName( gl.getUserID() );
              System.out.println(super.get_name() + ": Warning - Gridlet #" +
                      gl.getGridletID() + " owned by " + name +
                      " is already completed/finished.");
              System.out.println("Therefore, it is not being executed again");
              System.out.println();

              // NOTE: If a Gridlet has finished, then it won't be processed.
              // So, if ack is required, this method sends back a result.
              // If ack is not required, this method don't send back a result.
              // Hence, this might cause GridSim to be hanged since waiting
              // for this Gridlet back.
              if (ack) {
                  int[] array = new int[2];
                  array[0] = gl.getGridletID();
                  array[1] = GridSimTags.FALSE;

                  // unique tag = operation tag
                  int tag = GridSimTags.GRIDLET_SUBMIT_ACK;
                  super.send(super.output, GridSimTags.SCHEDULE_NOW, tag,
                          new IO_data(array, SIZE, gl.getUserID()) );
              }

              super.send(super.output, 0, GridSimTags.GRIDLET_RETURN,
                  new IO_data(gl,gl.getGridletOutputSize(),gl.getUserID()) );

              return;
          }

          // process this Gridlet to this GridResource
          gl.setResourceParameter(super.get_id(), resource_.getCostPerSec());
          policy_.gridletSubmit(gl, ack);
      } catch (ClassCastException c) {
          System.out.println(super.get_name() + ".processGridletSubmit(): " +
                  "ClassCastException error.");
          System.out.println( c.getMessage() );
      } catch (Exception e) {
          System.out.println(super.get_name() + ".processGridletSubmit(): " +
                  "Exception error.");
          System.out.println( e.getMessage() );
      }
}


Well, the code above may not work exactly like I described here, but
you can have an idea on how to do it.

Regards,

Marcos

----------------------------


On 19 February 2010 20:35, vishnu soni <vis...@gm...> wrote:
> hi ,
>     i want to groups the gridlets and store all groups into one
> storage , after grouping all the gridlets , i want to submit all
> groups to specified resource.plz tell me the method and give me if
> possible.
>
>                 V K SONI
>                KIIT, BHUBNESWAR
>
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-- 
Marcos DIAS DE ASSUNCAO - Postdoctoral researcher
INRIA RESO - LIP Bureau 337, Ecole Normale Superieure
46, allee d'Italie - 69364 - Lyon Cedex 07 - France
Phone: +33 4 72 72 82 28