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one question

redrabbit

hi,guys

what is Pgen,what is IntelliGen........????

 

In IntelliGen, once generation of me begins, this process can be invoked for fields that are not
descendants of me before calling me.post_generate(), in order to generate fields in an order that suits
the user-defined constraints. (In Pgen, once generation of me begins, this process is only invoked for
descendant fields of me before me.post_generate() is called.)

how to understand this sentence????   (from sn_igenuser)

  • Hello redrabbit,

    Pgen is the old Specman constraint solver, and IntelliGen is the new one. Until version 10.2 you
    need to select IntelliGen using a config flag (set_config(gen,default_generator,IntelliGen) before you
    load you code. Starting with 11.1, IntelliGen will be the default solver, so you only need to change
    the config if you want to use the old one (Pgen).

     

    The big difference (which you have already worked out) between Pgen and IntelliGen is that in
    Pgen the solver looks at one field at the time. In IntelliGen all fields (no matter in which point of
    the environment hierarchy they are) which are related via constraints are solved together. Doing so
    can modify the order in which postand pre_generate() are called (this is what is described in the
    user guide).

    It appears that you have many questions on the generator (there are some other posts from you).
    Maybe it would be helpful to get in touch with Cadence and try to arrange some on-site support
    for a couple of hours with a local AE to solve your issues.

    Best regards,
    -hannes

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