query in clock constraints

[vsrpkumar]

A system has 3 clocks inside and they are derived from main clock.In clock constraints, is it better to define them seperately or by derived clocks in primetime
kumar

 

[fzhang]

i suggest to derive the clocks from the main clock, in this way you constraint is more consistant with the design and easy to follow.

 

[Raptor]

Its better to define it as generated clocks. Because once you switch to post-layout this will ensure right network delay is calculated.