Re: [GridSim-users] help on GridSim

[<ag...@ds...>]

Hi Chao,

By now, I have no idea on what is happening.

So, could you tell me how you create your entities? There may be 
something wrong whit it.

BTW, could you please include the mailing list in your emails? This way, 
emails will be recorded, and anybody can use them in the future.

Regards,

Agustin
 

Chao JIN escribió:
> Thanks for your response.
>
> Now I got an exception as follows:
>
> Exception in thread "Thread-1" java.lang.ArrayIndexOutOfBoundsException: -1
> 	at java.util.ArrayList.get(Unknown Source)
> 	at eduni.simjava.Sim_system.send(Sim_system.java:600)
> 	at eduni.simjava.Sim_entity.sim_schedule(Sim_entity.java:342)
> 	at gridsim.net.SimpleLink.body(SimpleLink.java:204)
> 	at eduni.simjava.Sim_entity.run(Sim_entity.java:603)
>
> I think the reason is in the body() of SimpleLink, it tries 
> GridSim.getGridInfoServiceEntityId().
>
> Could you plz tell me if I need to specify the GridInfoService for 
> GridSimWithFailure? or how can I solve above exception?
>
> Best,
> Chao
> On Fri, 19 Oct 2007 09:38:09 +0200, Agustín Caminero Herraez wrote
>   
>> Hi Chao Jin,
>>
>> Chao JIN escribió:
>>     
>>> Hi,
>>>
>>> I have a question. RegionalGISWithFailure needs a parameter of Link. How 
>>> could I specify this parameter?
>>>   
>>>       
>> When you build the network topology, you must connect each entity 
>> with a router via a link.  This link is the parameter that you need 
>> to create a RegionalGISWithFailure. If you take a look at the 
>> resource failure examples, you will see that prior to the creation 
>> of any entity, a link is created, and this link is used as a 
>> parameter to create the entity. For example:
>>
>> Link link = new SimpleLink(gisName + "_link", baud_rate,
>>                                            propDelay, mtu);
>> ...
>> RegionalGISWithFailure gis = new RegionalGISWithFailure(gisName,
>>                                   link, failureNumResPattern, 
>> failureTimePattern,
>>                                   failureLengthPattern);
>>
>> In order to create the link, you just need the propagation delay,
>>  MTU and speed of the link (in bits per second).
>>
>>     
>>> I'd like to simulate a environemnt consisting one GridResourceIndex 
>>>       
> server 
>   
>>> and lots of machines, where machines may have frequent failures. The 
>>>       
> user 
>   
>>> query the GridResourceIndex server to get the current available 
>>>       
> machines, 
>   
>>> and then send tasks to machines.
>>>   
>>>       
>> That's how the RegionalGISWithFailure works. So, your 
>> GridResourceIndex can be implemented as a RegionalGISWithFailure entity.
>>     
>>> Could you plz tell me how to specify the link for above target 
>>>       
> simulation? 
>   
>>> One router is enough?
>>>   
>>>       
>> Sure, network topology does not affect your functionality.
>> You can have a network topology with one router, or with many of 
>> them, it doesn't matter.
>>     
>>>  
>>>
>>> Thanks,
>>>   
>>>       
>> Anytime,
>>
>> Agustin
>>     
>>> Chao Jin
>>>
>>> On Mon, 15 Oct 2007 11:41:25 +0200, Agustín Caminero Herraez wrote
>>>   
>>>       
>>>> Hi,
>>>>
>>>> Yes, you will have to modify RegionalGISWithFailure.java.
>>>> In this class, you must read the log files, and schedule the 
>>>> fail/alive events based on them.
>>>>
>>>> Agustin
>>>>
>>>> Anthony Sulistio escribió:
>>>>     
>>>>         
>>>>> Agustin may tell you more about this.
>>>>> But, if you insist on reading from a trace file,
>>>>> then perhaps you need to modify the RegionalGISWithFailure.java,
>>>>> since this class is responsible for sending messages to
>>>>> resources for fail/alive.
>>>>>
>>>>>
>>>>> anthony
>>>>>
>>>>>
>>>>> On Mon, 15 Oct 2007, Chao JIN wrote:
>>>>>
>>>>>       
>>>>>           
>>>>>> hi, Anthony
>>>>>>
>>>>>> I am using GridSim to simulate a distributed environment with frequent
>>>>>> failures. I have the failure logs of some machines in a cluster, and 
>>>>>>             
> I'd
>   
>>>>>> like to simulate failures according to these log files.
>>>>>>
>>>>>> I have found GridSim can simulate failures through some functions, 
>>>>>> such as
>>>>>> HyperExponential, etc. However, this is not what I need.
>>>>>>
>>>>>> Do I have to add new modules over GridSim? or How could I do it in a 
>>>>>> quicker
>>>>>> way?
>>>>>>
>>>>>> I am looking forward to your answers.
>>>>>>
>>>>>> BTW: I just went to your seat, but you were not there.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Chao
>>>>>> -- 
>>>>>>
>>>>>>         
>>>>>>             
>>>> -- 
>>>> ========================================================
>>>> Agustin Caminero-Herraez
>>>> PhD Student
>>>> Computing Systems Department
>>>> The University of Castilla La Mancha, Albacete. Spain.
>>>> Phone: +34 967 599200 Ext. 2693.  Fax : +34 967 599224
>>>> http://www.i3a.uclm.es/
>>>> ========================================================
>>>>     
>>>>         
>>> --
>>>
>>>
>>>       
>> -- 
>> ========================================================
>> Agustin Caminero-Herraez
>> PhD Student
>> Computing Systems Department
>> The University of Castilla La Mancha, Albacete. Spain.
>> Phone: +34 967 599200 Ext. 2693.  Fax : +34 967 599224
>> http://www.i3a.uclm.es/
>> ========================================================
>>     
>
>
> --
>
>   

-- 
========================================================
Agustin Caminero-Herraez
PhD Student
Computing Systems Department
The University of Castilla La Mancha, Albacete. Spain.
Phone: +34 967 599200 Ext. 2693.  Fax : +34 967 599224
http://www.i3a.uclm.es/
========================================================