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http://www.npac.syr.edu/users/gcf/npacaddons -- see foil 105
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Java provides a convenient way to build flexible graphics interfaces
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The screendump shows the message passing traffic and status of (36) parallel nodes used in a sorting algorithm
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In the example, the 36 threads are running the explicit algorithm on the client
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Alternatively and more generally, the threads are replaying a trace of the program which is or was running on a separate set of nodes
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If one uses Web Servers to control master parallel computation or more generally integrates Web into computing, these Web servers can naturally feed event traces into Java based display
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These traces can be real-time or batch
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