digital timing optimization

[research235]

hi

what is the best practice to include extra margin for timing optimization during place and route.
Is to by inducing extra uncertainty or increasing the frequency and what is the impact of either of technique

 

[jbeniston]

Uncertainty for global margin. Don't add uncertainty globally though if you have a few tricky paths, as this will increase area and power, and make it harder to fix, use set_path_margin on the specific paths.