Hi Kiran and all, If this actor is constructed as one atomic-actor that models the eight stages of execution, I would suggest that you re-build it as a composite actor from eight diffent atmoic-actors (your own models and/or from library actors).Each atomic actor in this model would be corresponding to one of the eight stages of execution.
Pipeline your actors; in other words output of (actor1/stage 1) is connected to input of (actor2/stage2);meanwhile all eight are synchronous;i.e connected to the same main clock. The DE director reacts to each positive edge as an event. The running(execution) of the overall composite actor is a sequene of events corresponding to each positive edge of the clock. In this criteria, Consider two consecutive actors (one delivering to the next) in (execution graph) ; at the positive edge both of them are Fired such that at this instance(event) T ; (actorX) delivers its output at time (T-1)to (actorX+1) and it produces simultaneously an output that to be delivered to (actorX+1)in the next firing event(next positive edge)at time (T+1).In other words the output token of actorX is reserved (not changing) in the gap between two consecutive events. for example : assume actorX output at T-1 = m actorX output at T = n (ActorX reserves-stores(flipflop) a value =m for one clock cycle) Then actor X+1 processes an input = m at time T actor X+1 processes an input = n at time T+1 Conclusion , if I understand your exact problem , this method could do your job without a delay actor in between actorX and actor X+1. Otherwise, insertion of a Timedelay with delay parameter of 1 could help. I hope that this would be helpful ... let me know about results. THANKS for your time and interest Best Regards, Mohamed A.Salem ======================================================================== On Thu, 2003-11-27 at 13:06, Kiran SB wrote: > Hi > I am new to ptolemy (6 months). > Currently I am using PTII 3.0.2 for building(simulating) custom actors in the > DE domain, which are basically executional elements (of a reconfigurable > device). > > In one particular situation I have an actor with 8 stages of execution. > During initialize I construct a Execution(Data) flow graph depending on the > selector settings in the actor. > I traverse through the graph and execute each stage in it during fire. > Now at one stage I need to create a delay of 1 clock. > The executional unit needs to sleep for a clock and proceed to the next stage. > Basically I need to forward time by a clock. > setCurrentTime (currentTime+1) might not be a good idea as it might cause > problems to the token's timestamp. > What is to be achieved is that the currentTime after this stage should be > t+1(say we started at t). > I don't know if I can use DEEventQueue in any way for this purpose. > Maybe its a wrong or a repeat question! > I have searched all group messages and couldn't find anybody with such a > requirement. > Can somebody help me out with this problem? > > - kiran ---------------------------------------------------------------------------- Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]