Re: [GridSim-developers] [GridSim-users] how the clock of the gridsim is increased?

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Hi, Dear all:
Thanks a lot to Dr. Rajiv-Ranjan and Marcos Dias de Assuncao for very  
helpful answer.
In this case, does it mean that if there is no events existing in such  
future queue, the gridsim clock will stop ticking, then the simulation  
will halt.
In this case, If my object inherited from gridsim wanna call an  
external services(RMI to another JVM, or remote Database, or something  
else) for some result, and it will access the result after certain  
period of time proactively. Instead of "super.gridSimHold(100)", I  
should utilize "java.lang.object.wait(timeout)". Furthermore, if there  
are no other events happening during this "waiting" period, the  
gridsim clock won't change(even the object wait for a long time to  
fetch the result back).

BTW, if the future queue is empty, the simulation will still keep  
running until some gridsim object calls "StopGridSimulation", right?

Best Regards
ye

On 28 Nov, 2008, at 1:41 PM, Gilberto Cunha wrote:

> Thanks Rajiv-Ranjan, for your clear answer. I'm understand how  
> gridsim clock work and i fixed my problem.
>
> Regards,
>
> Gilberto Cunha
>
> On Thu, Nov 27, 2008 at 9:34 AM, Rajiv-Ranjan RAJIV-RANJAN <rr...@cs... 
> > wrote:
> On Mon, 24 Nov 2008 08:35:25 -0300, Gilberto Cunha wrote
> > Hi... My name is Gilberto.
> >
> > I'm trying understand, how the clock of the gridsim work, but i  
> don't
> > understand very well..
> > Could you explain how gridsim clock is work and how the clock of the
> > gridsim is increased?
>
>  This is how GRidSim Clock works
>
>  When one starts the Simulation, at that time T = 0 secs
>
>  Suppose a event is scheduled at time t1 after delay t = 1000  
> GridSim Secs...
>  it is added to future event queue of SimJava, the queue is always  
> monitored
> by a live Thread, which has high priority in CPU scheduling.
>
> When the thread reads the queue finds there is event in the queue  
> for some
> object X in the simulation system. What it does is it increments the  
> GridSim
> clock to T = 1000, and delivers the event to object X.
>
> Say at t2, a event is scheduled after delay t = 300 (note this delay  
> is
> relative to current GridSim Clock time not from 0 secs), t = 300  
> means the
> event is scheduled for event t =1300.
>
> Similar to first case the Monitor thread consumes this event from  
> future event
> queue and passes to the destination object; and increments GridSim  
> clock to
> 1300...This way all events are processed in First Come and First  
> Serve basis.
>
>
> The main point to note here is that the events are scheduled  
> relative to the
> current GridSim Clock....
>
>
> I hope this makes things clear.
>
>
> Thanks
> Dr. Rajiv Ranjan
>
>
>
> >
> > One doubt, for example: what's happen when: an entity 'X' is started
> > and send an event for itself at 3600 seconds. After in other moment,
> > an entity 'A' send an event for entity 'B' at 320 second. How
> > GridSim clock is synchronized?
> >
> > Other doubt is, how resources register influence the gridsim clock?
> >
> > Regards and Thanks for your atention,
> >
> > Gilberto
> >
> > On Mon, Nov 24, 2008 at 7:18 AM, <
> > gri...@li...> wrote:
> >
> > > Send Gridsim-users mailing list submissions to
> > >        gri...@li...
> > >
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> > > than "Re: Contents of Gridsim-users digest..."
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> > >
> > > Today's Topics:
> > >
> > >   1. Re: GridSim instalation (Anthony Sulistio)
> > >
> > >
> > >  
> ----------------------------------------------------------------------
> > >
> > > Message: 1
> > > Date: Mon, 24 Nov 2008 21:18:28 +1100 (EST)
> > > From: Anthony Sulistio <an...@cs...>
> > > Subject: Re: [GridSim-users] GridSim instalation
> > > To: Gil Noe Zavala Ramirez <gt...@ya...>
> > > Cc: her...@ho..., gri...@li...
> > > Message-ID:
> > >        <Pin...@mu... 
> >
> > > Content-Type: text/plain; charset="iso-8859-1"
> > >
> > >
> > > Hi Gil and Juan,
> > >
> > > On GridSim website, under the Documentation section, there
> > > are instructions on how to use GridSim with a Java IDE:
> > > * Eclipse http://www.gridbus.org/gridsim/paper/eclipse.pdf
> > > * JBuilder http://www.gridbus.org/gridsim/paper/jbuilder.pdf
> > > * JCreator http://www.gridbus.org/gridsim/paper/jcreator.pdf
> > >
> > >
> > > In the future, please email us through our mailing list:
> > > gridsim-users (at) lists.sourceforge.net :
> > >     for general queries and feedbacks.
> > >
> > > gridsim-developers (at) lists.sourceforge.net :
> > >     for contributing to GridSim or questions related to the  
> existing
> > > GridSim code.
> > >
> > > To subscribe to the above mailing lists, please go to:
> > >     https://lists.sourceforge.net/lists/listinfo/gridsim-users
> > >     https://lists.sourceforge.net/lists/listinfo/gridsim- 
> developers
> > >
> > >
> > > anthony
> > >
> > >
> > > On Thu, 20 Nov 2008, Gil Noe Zavala Ramirez wrote:
> > >
> > > > Hi
> > > > my name is Gil
> > > > and...
> > > > I am?student of the technologic institute of Mexicali
> > > http://www.itmexicali.edu.mx/,??
> > > > I have problems about how to install gridsimtoolkit in windows  
> vista and
> > > > XP with easy eclipse or jcreator.
> > > > ?
> > > > the type of problem is shown like this:
> > > > ?
> > > > package Gridsim does not exist.
> > > > cannot find symbol class GridletList.
> > > > ?
> > > > please can you lend? a hand, Mr.Anthony.
> > > > ?
> > > > Regards:
> > > > ?
> > > > Zavala Ramirez Gil Noe.
> > >
> > >
> > >       ?Todo sobre Amor y Sexo!
> > > La gu?a completa para tu vida en Mujer de Hoy.
> > > http://mx.mujer.yahoo.com/
> > >
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> > >
> > > _______________________________________________
> > > Gridsim-users mailing list
> > > Gri...@li...
> > > https://lists.sourceforge.net/lists/listinfo/gridsim-users
> > >
> > >
> > > End of Gridsim-users Digest, Vol 57, Issue 1
> > > ********************************************
> > >
> >
> > --
> > Gilberto Cunha Filho
> > gil...@gm...
> > SISMO - Laboratório de Sistemas e Mobilidade
> > UFMA
>
>
> warm regards
> ---------------------------------
> Rajiv Ranjan
> http://www.cs.mu.oz.au/~rranjan
> CSSE Dept.
> The University of Melbourne
> VIC, AU
>
>
>
>
> -- 
> Gilberto Cunha Filho
> gil...@gm...
> SISMO - Laboratório de Sistemas e Mobilidade
> UFMA
> -------------------------------------------------------------------------
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--

Ye Huang, Department of Informatics
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