There is a (rather old) paper on this topic at: http://ptolemy.eecs.berkeley.edu/publications/papers/88/recurrencesVLSI-III
Other useful pointers are the dynamic dataflow (DDF) domain demos and the IterateOverArray higher-order actor. Edward At 11:13 PM 7/6/2006, Sivagowri Swaminathan wrote: >Hi all > >I am trying to repeat a process using an if-then-else logic and I get struck >each time. >Here is the scenario: > >I have three processes [ not sure if thats the right word, it can be >considered as modules doing a specific task] in a pipeline, say process A, >B, C. > >In process B, if the output is "xyz" I have to repeat process B until I get >the desired output, in which case, the control moves to the next module down >the pipe. Each module/process is a composite actor, having an input port and >an output port. I have a SDF director for the main workflow which should be >run only once. > >How do I trigger process B again? > >I get an error message saying that the "output port drives the same relation >as the external input port, this is not legal in SDF" every time. is SDF >appropriate for workflows such as these? > >since I use a pipelined approach, I do not want to use PN director, as each >component will run in its own thread. > >can someone give me an example for looping which does not involve integer >for loops. > >Thanx >Siva > > >_______________________________________________ >Kepler-users mailing list >Kepler-users at ecoinformatics.org >http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/kepler-users ------------ Edward A. Lee Professor, Chair of EECS 231 Cory Hall, UC Berkeley, Berkeley, CA 94720-1770 phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845 eal at eecs.Berkeley.EDU, http://ptolemy.eecs.berkeley.edu/~eal
