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e testflow

myonlyscreen

 Hi,

I am using e testflow, and encountering an interesting case that i would like to share and get your feedbacks.

I have an environment "A" with tf_domain == domain_a.

Under this  environment i am instantiating an environment "B" which is testflow unit and have 2 sequence drivers which are also testflow units.

According to the Cadence test flow document, if the tf_domain field is untouched, it is determined to be (with soft constraint) to be the same as the nearest enclosing testflow unit, if there isn't such  tf_domain is set to DEFAULT.

However, what i see is:

env_b.tf_domain = domain_a

env_b.seq_driver_1.tf_domain = domain_a

env_b .seq_driver_2.tf_domain =DEFAULT

How come the second sequence driver didn't got the same tf_domain value like the other units?

Moreover, the tf_domain field is declared as const, thus can not be changed after generation.

I will be happy to hear your feedbacks.

 

Parents
  • Hi E.M.
    in general testflow is very helpful in phaseing you environment. However, there are cases when it may be helpful to still use the TEST_DONE objection. For example there may be other units/UVCs which don't use testflow, or multiple unrelated domains. A good approach would be:

    - in the phase TCM of the first phase (ENV_SETUP) – raise_objection(TEST_DONE)
    - as last thing of the last phase (FINISH_TEST) - drop_objection(TEST_DONE)

    Regards,
    -hannes
Reply
  • Hi E.M.
    in general testflow is very helpful in phaseing you environment. However, there are cases when it may be helpful to still use the TEST_DONE objection. For example there may be other units/UVCs which don't use testflow, or multiple unrelated domains. A good approach would be:

    - in the phase TCM of the first phase (ENV_SETUP) – raise_objection(TEST_DONE)
    - as last thing of the last phase (FINISH_TEST) - drop_objection(TEST_DONE)

    Regards,
    -hannes
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