Distributed Parallel Reversi in Java: You have Dual-Core? Quad-Core Processors?

Let's catch up with the technology trends on multi-core processors. If you have bought a dual-core, or quad-core, or a large shared memory parallel machine, or a cluster of computers, then you can run this Distributed Parallel Reversi, xversi-java-parallel-v0.8b, to make them busy.

Running Distributed Parallel Reversi: Step-by-step

1. Launch a server in each of your machines that will provide reversi evaluation services.
• xman@sai xversi-java-parallel-v0.8b # java -Djava.security.policy=xversi.policy XversiEval localhost 9394
  Registered XversiInterface
• localhost: Machine name, or its IP.
• 9394: Port number for the client to connect to. Remember to set your firewall to allow this port.
2. Setup a machine info file called nodeinfo.txt.
• xman@sai parallel # cat nodeinfo.txt
  2
  localhost:9394
  localhost:9394
• 2: There are 2 entries about machine information.
  
• localhost: Machine name or its IP. I include two identical lines because I'm running this on a dual-processor or dual-core processor machine. This will make the parallel reversi to utilize the two processors in the system.
3. Launch the Java Applet.
• xman@sai parallel # appletviewer -J-Djava.security.policy=xversi.policy test.html
  Number of Node : 2
  before lookup
  Node 0 localhost:9394
  name 0 //localhost:9394/xversiInterface
  Node 1 localhost:9394
  name 0 //localhost:9394/xversiInterface
  after lookup
• I've forgotten how do you specify the policy to a browser to launch the Java applet. TELL ME IF YOU KNOW! ;)

Notice that in picture below, two processors in the system are running at full speed to evaluate different moves at the same time. :) Hence, if you bought a dual-core, quad-core, ... or even a cluster of computers, enjoy the benefit of parallel computing. :) Ideally it will run N times faster with N processors.