Is there a way in sta openroad to ignore a timing path that

Question

Is there a way in sta openroad to ignore a timing path that goes through two particular instances In our multiproject chip no two project can be active at the same time so I would want to ignore paths that include projectA AND projectB for example

Matthew Guthaus · Answer

set false path is the SDC command that you want to add

Matthew Guthaus · Answer

I believe it has a through option but I m not sure about two instances You can do from and to as well

Maximo Balestrini · Answer

yes I m going to try different options of set false path What I ve just tried and it seems it supports at least it didn t complain is `set false path through instance a through instance b`

Maximo Balestrini · Answer

It seems to work and it seems the order matters `set false path through instance a through instance b` just ignores paths that goes first through instance a and then instance b and not the other way around

Matt Liberty · Answer

yes order matters