[GridSim-users] Gridsim questions

[Giancarlo <wro...@gm...>]

Hi all,
sorry in advance if my English isn't very good, not so skilled in writing.
I'm working on gridsim to simulate a scheduling algorithm. Is there 
anyone could help me solve some questions arise during the toolkit use?

1. I'm extending the AllocPolicy class. I wonder if can be a race 
condition between a call to gridletSubmit (made by the GridResource 
thread) and an internal event scheduled for gridlet completion that is 
caught by the body in the AllocPolicy thread or the two events are 
synchronized in some way. In both cases subsequent call to the same 
methods are made. Trying to answer this question i took a look on 
simjava code. It seems that in the rare case of the two event with exact 
same time in the future queue could be a race condition,am I mistaken 
about this?
This leads me to another question. Two event with exact same time seem 
very rare, this leads simjava to weak up one thread per clock tick, am I 
mistaken again?

2. After the simulation end (calls to shutdownUserEntity & 
terminateIOEntities) can I call init again and start another simulation 
or I have to reset some data structures or restart jvm?

Thanks in advance
Regards
Giancarlo