Testing for Use over Ensemble

The Draw program can be run over Ensemble using the -type option when starting it:

 java Draw -type ens

JavaGroups tries to start the outboard executable and waits some seconds until outboard is running. Then JavaGroups connects to outboard via a socket. There are several problems that might occur when trying to run JavaGroups over Ensemble:

• The outboard executable is not found. It is probably not in your PATH.
• The number of seconds to wait is too short to start up outboard before connecting to it. This might be the case when the machine is heavily loaded. Either decrease the load or increase the timeout value. In the latter case, look for Thread.sleep in file JavaGroups/Ensemble/HotEnsemble.java and increase its timeout.
• The instances don't 'find' each other. The problem might be that IP multicast is not enabled for Ensemble and the gossip daemon is not running. Start gossip before running the program:

   gossip&