BTW - I might be wrong about how independent Ptolemy II is from cooperative vs preemptive scheduling. However, I believe we have addressed the differences. For example, it could be that the schedule of PN actors that are fired will differ between the two schedulers, but that the overall result will not be different. Perhaps someone else has more info about this.
The semantics of PN and the implementation guarantees that the sequence of data communicated between actors is the same under any thread scheduler. The semanatics says nothing, however, about the timing of these events. The timing will depend on the thread scheduler.
Edward
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Edward A. Lee
Professor, Chair of the EE Division, Associate Chair of EECS
231 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
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