Chapter 7 . DDF Domain

نویسندگان

  • Soonhoi Ha
  • Edward A. Lee
  • Thomas M. Parks
  • Joseph T. Buck
چکیده

The dynamic dataflow (DDF) domain in Ptolemy is a superset of the synchronous dataflow (SDF) and Boolean dataflow (BDF) domains. In the SDF domain, a star consumes and produces a fixed number of particles per invocation (or “firing”). This static information (the number of particles produced or consumed for each star) makes possible compile-time scheduling. In the BDF domain, some actors with data-dependent production or consumption are allowed. The BDF schedulers attempt to construct a compile-time schedule; however, they may fail to do so and fall back on a DDF scheduler. In the DDF domain, the schedulers make no attempt to construct a compile-time schedule. For this reason, there are few constraints on the production and consumption behavior of stars in this domain.

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تاریخ انتشار 1997