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As before, in order to run the example, we have to do the following steps:

1. Start the RMI registry by running the rmiregistry utility.
2. Start the ComputeEngine server:

   On Windows:        start java rmiServer.ComputeEngineServer

   On Unix/Linux:        java rmiServer.ComputeEngineServer &

   If all goes well, the server should output:

   Setting SecurityManager ...
   Using port 2001
   Creating ComputeEngineImpl instance...
   [Re]binding ComputeEngineImpl instance in registry...
   Using url: rmi://localhost:2001/ComputeEngine
   Ready to compute...

   (Your port number may vary.)

3. Run  the ComputeEngine client:

   java rmiClient.ComputeEngineClient

   If all goes well, the client should display:

   Using port 2001
   Locating remote ComputeEngine...
   Creating ComputePi instance...
   Requesting remote computation...
   Result: PI = 3.1415926535897932384626433832795028841972

Note: Again, the order in which we perform these steps is important!