Mike, most of our work lately has been in either asynchronous island  
models or (more commonly) in the master/slave evaluator, where we've  
put most of our effort.  I'd be glad to look into it but I need a  
minimal example that we can run here and test.

I will mention that if one of the nodes is stuck for some reason --  
some large individual is taking forever to be processed, for example,  
a synchronized island model will sit there waiting for it.

Sean

On Jun 9, 2006, at 12:28 PM, Michael Solano wrote:

> Hello Everyone,
>
> I'm having a bit of trouble using the IslandExchanger to perform  
> synchronous Island Model experiments in ECJ version 15. It seems to  
> work for a while but at some point one of the nodes will output  
> "Waiting for synchronization...." and everything seems to stall  
> (ecj is still running but none of the nodes are doing anything).
>
> The current setup I'm using is 3 islands (on 3 separate computers)  
> with subpop sizes of 333 individuals each with migration of 10  
> individuals every 5 generations. Does anyone know what might be  
> causing this? Is there something I may be doing incorrectly? Thanks :)
>
> -Mike