Re: [GridSim-users] Simulating Grid Resources with Failures

[Eran C. W. <era...@gm...>]

Hi Agustin,

Ok, that explains. I didn't know about the re-submission part. Is there a
way to block/stop the re-submission?

Thanks,
Eran Chinthaka Withana


2010/12/10 Agustín Caminero Herráez <ag...@ds...>

>  Hi Eran,
>
> I've just run the first example of the resource failure functionality and
> there are resources failing, and gridlets got failed because of that.
>
> For instance, among the output I get:
> Ex01_User0: Receiving Gridlet #0 with status Failed at time =
> 31.88541776882028 from resource Ex01_Res_1
>
> This means that the gridlet 0 of user 0 is failed. then, user 0 will
> resubmit the gridlet to another resource.
>
> In the end of the experiment, all the gridlets will be executed, no matter
> if they failed in the mean time.
>
> Regards,
>
> Agustin
>
> On 12/10/2010 04:02 PM, Eran Chinthaka Withana wrote:
>
> Hi Augustin,
>
>  Thanks for the reply. I played a little bit with these params, but was
> not successful. Since this is an example to demo resource failures, I
> thought the given numbers will make some resources to fail automatically in
> this test.
>
> Thanks,
> Eran Chinthaka Withana
>
>
> 2010/12/10 Agustín Caminero Herráez <ag...@ds...>
>
>>  Hi Eran,
>>
>>
>> On 12/05/2010 07:12 AM, Eran Chinthaka Withana wrote:
>>
>> Hi,
>>
>>  I increased the number of gridlets to 50 and ran the first two example
>> programs found under ResourceFailure examples. But all the gridlets were
>> marked as success, after the simulation. How can I make some of the gridlets
>> to fail?
>>
>>  Just modify the parameters of the distributions that define the failure
>> pattern. In ResFailureEx01.java u have a brief explanation of this:
>>
>>             // HyperExponential: mean, standard deviation, stream
>>             // how many resources will fail
>>             HyperExponential failureNumResPattern =
>>                     new HyperExponential(totalMachines / 2, totalMachines,
>> 4);
>>
>>             // when they will fail
>>             HyperExponential failureTimePattern =
>>                     new HyperExponential(25, 100, 4);
>>
>>             // how long the failure will be
>>             HyperExponential failureLengthPattern =
>>                     new HyperExponential(20, 25, 4); // big test: (20,
>> 100, 4);
>>
>>             // creates a new Regional GIS entity that generates a resource
>>             // failure message according to these patterns.
>>             RegionalGISWithFailure gis = new
>> RegionalGISWithFailure(gisName,
>>                               link, failureNumResPattern,
>> failureTimePattern,
>>                               failureLengthPattern);
>>
>> Regards,
>>
>> Agustin
>>
>>
>>  I assume these examples help to simulate a grid with resource failures.
>> Also it will be nice if you can help me to understand how I can control the
>> parameters to control resource failures in the simulations.
>>
>>  Thanks,
>> Eran Chinthaka Withana
>>
>>
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>>
>> --
>> Dr. Agustin Caminero
>> Assistant Professor
>> Dept. of Communication and Control Systems
>> The National University of Distance Education
>> Madrid. SpainE-Mail:acc...@sc...
>> Phone: +34 913 989 468http://www.uned.es
>>
>>
>
> --
> Dr. Agustin Caminero
> Assistant Professor
> Dept. of Communication and Control Systems
> The National University of Distance Education
> Madrid. SpainE-Mail:acc...@sc...
> Phone: +34 913 989 468http://www.uned.es
>
>