The-OpenROAD-Project / OpenSTA

OpenSTA engine
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Command set_power_activity #125

Closed kartash02 closed 1 year ago

kartash02 commented 1 year ago

The OpenSTA documentation says that key -activity of the set_power_activity command defines the number of transitions per clock cycle. But in test cases key -activity specifies the transition density. Transition density = activity / clock period. Is it right to use key -activity to set value of transition density instead of activity?

jjcherry56 commented 1 year ago

Activity is the probability that a pin switches from high to low or low to high in one clock cycle. I'll update the doc to say this explicitly.