Based on ASCII execution script defining the applications
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Not directly work flow graphs -- rather "classic programming language"
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Each nodeset member has usage control block to record when dataset arrives and when to send out to next nodeset member
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Similarily each linkset member has usage control block to record at what time the linkset member is free or occupied
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Supports both data parallel mode and individual operation on each nodeset, linkset member mode (See Jacobi Example on next pages)
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Data parallel mode has much faster PetaSIM execution time as essentially independent of # of processors
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Data parallel model is time stepped while individual model is simple event driven model
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