Synchronous dataflow (SDF) is a statically scheduled dataflow domain in Ptolemy. "Statically scheduled" means that the firing order of the stars is determined once, during the start-up phase. The firing order will be periodic. The SDF domain in Ptolemy is one of the most mature, with a large library of stars and demo programs. It is a simulation domain, but the model of computation is the same as that used in most of the code generation domains. A number of different schedulers, including parallelizing schedulers, have been developed for this model of computation.
We assume in this very short chapter that the reader is familiar with the SDF model of computation. Refer to the User's Manual. Moreover, we assume the reader is familiar with chapter
2,
"Writing Stars for Simulation". Since most of the examples given in that chapter are from the SDF domain, there is only a little more information to add here.
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