Initialisation and elaboration phase

[amitk3553]

What is the difference between initialisation and elaboration phase in steps of simulation??

[apfitch]

See section 4 of the IEEE 1666-2011 SystemC Language Reference Manual for a description of the steps taken in Elaboration and Simulation.

 

Roughly speaking, elaboration is the construction of the network of processes and channels that are your SystemC model; the initialisation phase occurs near the start of simulation, and is the part of the scheduler when all processes are run once at time zero

 

regards

Alan

[amitk3553]

See section 4 of the IEEE 1666-2011 SystemC Language Reference Manual for a description of the steps taken in Elaboration and Simulation.

 

Roughly speaking, elaboration is the construction of the network of processes and channels that are your SystemC model; the initialisation phase occurs near the start of simulation, and is the part of the scheduler when all processes are run once at time zero

 

regards

Alan

Thanks alan,

 

one more thing what is the difference between initialisation and evaluate phase?

 

In evaluate phase processes are resumed???What does it means?? Is this means that some part of process is executed in initialisation phase ??

 

Then like we had a process in which two variables are going to add......how would this add operation be performed in initialisation and evaluate phases??like in initialisation values are to be assigned and in evaluate phase added value is to produced??

 

Please explain this with some example

 

 

Thanks with Regards

Amit

[apfitch]

Initialisation only happens once. Evaluation happens during the rest of simulation. You could say that initialisation is the very first evaluation,

 

Alan

[amitk3553]

Hello alan,

 

I had picked an example that you had given in another thread. So please now tell me in the the following example that which part of process is in initial phase and which in evaluate phase.

 

 

void e() {

  cout << "this is a dynamic process" << endl;

}

 

SC_MODULE(M) {

 

  void f() {

    cout << "This is a static process" << endl;

    wait(10, SC_NS);

    sc_spawn (&e);

  }

 

  SC_CTOR(M) {

     SC_THREAD(f)

 }

 

};

 

 

Regards

Cam

[apfitch]

Every SC_METHOD runs and returns during initialisation. Every SC_THREAD runs until it suspends. In my (untested!) example above, the SC_THREAD f() would execute

 

 

cout << "This is a static process" << endl;

 

and then suspend at this statement:

 

 

wait(10, SC_NS);

The dynamic process e() obviously wouldn't run during intialisation as it has not yet been spawned.

 

regards

Alan