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Re: [GridSim-developers] [GridSim-users] Extending GridSim Reg-JR
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From: Marcos D. de A. <ma...@cs...> - 2009-02-15 23:10:41
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Hi Ye,
I am sorry, but I didn't receive any attachment.
Cheers,
Marcos
On 14/02/2009, at 8:38 PM, ye huang wrote:
> Hi, Marcos:
> Thanks for reply! Since I am using Example04 from Grdisim sample
> package to demonstrate the issue. It seems that the number of users in
> the initialization is remained the same.
>
> I attached the file with the mail. For simple, actually it's just one
> class without much modification from Example04. Hope it helps!
>
> Regards
> ye
>
>
>
> On 14 Feb, 2009, at 4:35 AM, Marcos Dias de Assuncao wrote:
>
>>
>> Dear Ye,
>>
>> The snippets of code seem ok. Please make sure that you are shutting
>> down the user entities and have provided the correct number of users
>> in the initialisation of GridSim.
>>
>> If that does not work, I am just wondering if you could provide us
>> with more details about the code?
>>
>> Regards,
>>
>> Marcos
>>
>>
>> On 10/02/2009, at 8:40 AM, ye huang wrote:
>>
>>> Hi,
>>> Actually, I think the problem also exists upon gridsim itself (or i
>>> haven't understood it well so far).
>>>
>>> I encountered a similar problem by extend the Example code of
>>> gridsim itself, which i had also submitted to the maillist.
>>> Unfortunately, no one replied that last time. The following is the
>>> details:
>>>
>>> --- ---- [start] --------------
>>> However, I find another confusing "bug", it's about the way of
>>> receiving gridlet sent back from resources. Here i am going to
>>> explain it using a demo from GridSim's official example file:
>>> Example 04:
>>>
>>> Starting from line 109 of Example 04, submitting and receiving
>>> gridlets are finished in one loop as follows:
>>> --- code snippet 1 ---
>>>
>>> for (int i = 0; i < this.list_.size(); i++)
>>> {
>>> gridlet = (Gridlet) this.list_.get(i);
>>> info = "Gridlet_" + gridlet.getGridletID();
>>>
>>> super.gridletSubmit(gridlet, resourceID);
>>>
>>> gridlet = super.gridletReceive();
>>> this.receiveList_.add(gridlet);
>>> }
>>>
>>> In my scenario, in order the decouple the behavior, I split the
>>> procedure into two parts as follows:
>>>
>>> --- code snippet 2 ---
>>>
>>> // part 1: submit gridlet
>>> for (int i = 0; i < this.list_.size(); i++)
>>> {
>>> gridlet = (Gridlet) this.list_.get(i);
>>> info = "Gridlet_" + gridlet.getGridletID();
>>>
>>> super.send(resourceID, GridSimTags.SCHEDULE_NOW,
>>> GridSimTags.GRIDLET_SUBMIT, gridlet);
>>>
>>> }
>>>
>>> // part 2: receive gridlet from gridresource
>>> Sim_event ev = new Sim_event();
>>> while (Sim_system.running()) {
>>> super.sim_get_next(ev);
>>>
>>> if (ev.get_tag() == GridSimTags.GRIDLET_RETURN){
>>> gridlet = (Gridlet) ev.get_data();
>>>
>>> // stores the received Gridlet into a new GridletList object
>>> this.receiveList_.add(gridlet);
>>> }
>>>
>>> }
>>>
>>> // part 3, print the received gridlet list
>>> printGridletList(this.receiveList_);
>>>
>>> ---
>>>
>>> Then, during the execution, I got the prompted warning :
>>> Resource_0: Warning - Gridlet #2 owned by Example4 is already
>>> completed/finished.
>>>
>>> The more gridlets were submitted, the more warning will be prompted.
>>>
>>> I have to say, it seems there is no mistake caused by this warning.
>>> But to understand the infrastructure better, is there anyone could
>>> help me about why it appears and how to avoid it?
>>>
>>> --- ---- [end] --------------
>>>
>>> Regards
>>> ye
>>>
>>>
>>> On 9 Feb, 2009, at 6:09 PM, Jeyarani Rajarathinam wrote:
>>>
>>>> Hi Friends,
>>>> I am using GridSim4.0 and I have created new internal policy
>>>> instead
>>>> of FCFS. I get the following error. Please help me to correct the
>>>> problem
>>>>
>>>> JR
>>>> I have submitted 4 gridlets and the fourth gridlet is small
>>>> compared to
>>>> rest.
>>>>
>>>> Sim_system: No more future events
>>>> Gathering simulation data.
>>>> GridResource_0: Warning - Gridlet #3 owned by User_0 is already
>>>> completed/finish
>>>> ed.Exception in thread "Thread-9"
>>>> java.lang.NullPointerExceptionTherefore, it is not being executed
>>>> again
>>>>
>>>> at Example8.body(Example8.java:107)
>>>>
>>>> at eduni.simjava.Sim_entity.run(Sim_entity.java:603)
>>>> -------------------------------------------------------------------
>>>> -----------
>>>> Create and Deploy Rich Internet Apps outside the browser with
>>>> Adobe(R)AIR(TM)
>>>> software. With Adobe AIR, Ajax developers can use existing skills
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>>>> resources and data with the reach of the web. Download the Adobe
>>>> AIR SDK and
>>>> Ajax docs to start building applications today-http://p.sf.net/
>>>> sfu/adobe-com
>>>> _______________________________________________
>>>> Gridsim-developers mailing list
>>>> Gri...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/gridsim-developers
>>>
>>>
>>> --
>>>
>>> Ye Huang, Department of Informatics
>>> University of Fribourg / Pérolles 2 - Bld de Pérolles 90
>>> 1700 Fribourg, Switzerland
>>>
>>> e-mail: ye....@he..., ye....@un...
>>> http://diuf.unifr.ch/people/huangy/
>>> Office: +41 26 429 65 95
>>>
>>>
>>>
>>>
>>> --------------------------------------------------------------------
>>> ----------
>>> Create and Deploy Rich Internet Apps outside the browser with
>>> Adobe(R)AIR(TM)
>>> software. With Adobe AIR, Ajax developers can use existing skills
>>> and code to
>>> build responsive, highly engaging applications that combine the
>>> power of local
>>> resources and data with the reach of the web. Download the Adobe
>>> AIR SDK and
>>> Ajax docs to start building applications today-http://p.sf.net/
>>> sfu/adobe-com_______________________________________________
>>> Gridsim-users mailing list
>>> Gri...@li...
>>> https://lists.sourceforge.net/lists/listinfo/gridsim-users
>>
>> 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...
>>
>> -------------
>> "It is well enough that people of the nation do not understand our
>> banking and monetary system, for if they did, I believe there would
>> be a revolution before tomorrow morning."
>>
>> Henry Ford
>>
>
>
> --
>
> Ye Huang, Department of Informatics
> University of Fribourg / Pérolles 2 - Bld de Pérolles 90
> 1700 Fribourg, Switzerland
>
> e-mail: ye....@he..., ye....@un...
> http://diuf.unifr.ch/people/huangy/
> Office: +41 26 429 65 95
>
>
>
>
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> _______________________________________________
> Gridsim-developers mailing list
> Gri...@li...
> https://lists.sourceforge.net/lists/listinfo/gridsim-developers
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...
-------------
"It is well enough that people of the nation do not understand our
banking and monetary system, for if they did, I believe there would
be a revolution before tomorrow morning."
Henry Ford
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