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Re: [GridSim-users] help on GridSim
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From: Chao J. <ch...@cs...> - 2007-10-23 07:44:17
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Hi, Agustin
My entities are created as following:
1) I changed the RegionalGISWithFailure class to make it can replay failures
for GridResourceWithFailure from log.
2) I create a RegionalGISWithFailure and a SimpleLink as following
Link link = new SimpleLink("rc_link", baud_rate, propDelay, mtu)
RegionalGISWithFailure gis = new RegionalGISWithFailure("GIS", link,
logFile);
3) I create GridResourceWithFailure, and call setRegionalGIS(gis)
Do you think above details are enough?
BTW: I read the examples for GridSimWithFailure, where no Gridsim.setGIS()
is invoked. So I am not sure how I can let GridSim know which is GIS?
Regards,
Chao
On Tue, 23 Oct 2007 09:30:05 +0200, Agustín Caminero Herraez wrote
> 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/
> ========================================================
--
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