Re: [GridSim-developers] when/why the Sim_system.running() exit

[ye h. <hua...@gm...>]

Hi, Marcos:
Thanks! I am working on it.

Regards
ye

On 14 Feb, 2009, at 4:26 AM, Marcos Dias de Assuncao wrote:

>
> Dear Ye,
>
> First, please make sure that the number of users you provide in the  
> initialisation of GridSim reflects the number of times you call
> the method shutdownUserEntity(). You may be shutting down the user  
> entities prematurely.
>
> Second, if you put a gridlet in a cache and want to evaluate or do  
> something with it later, you should schedule a future event,  
> probably to the entity that implements the algorithm. Scheduling  
> periodical events for time the gridlet has to be processed would  
> prevent Sim_system.running() from returning false because there will  
> always be an event in the future event queue.
>
> The pseudo-code of the idea is more or less:
>
> body() {
>
> 	if(event == 'evaluate gridles') {
> 		// check gridlets here
> 	}
> 	
> 	if(should still continue to do something with cached gridlets) {
> 		// schedule the next 'evaluate gridlets' event here
> 	}	
> }
>
>
> Regards,
>
> Marcos
>
>
> On 12/02/2009, at 12:46 AM, ye huang wrote:
>
>> Hi, all:
>> I use while(Sim_system.running()) to submitting gridlet and receive
>> feedback. If a gridlet is no grid resource is currently available due
>> to my scheduling algorithm, i will put the gridlet into a locally
>> cached queue, the scheduling algorithm will poll the queue to process
>> unsubmitted gridlets.
>>
>> Now, I noticed my simulation exit without finishing all the cached
>> gridlets, which is led by exit of loop:  
>> while(Sim_system.running()). I
>> m wondering the mechanism of Sim_system.running(), and when it goes  
>> to
>> false? Any idea to prevent?
>>
>> Regards
>> ye
>>
>>
>>
>>
>>
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>
> 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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--

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/
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