Hi @User, we are trying to feed our own generated std cells (still skywater 130nm) into the flow. Can we edit the SITE unit size part of the .tlef file as shown in the figure below (to adjust it into the same size as our generated std cells)? Such as add a SITE unithdtpl (high density, triple height), or just change the width/height value of SIZE width by height from default ones. Or to say, we are recommended not to change .tlef file, and have to fit bbox of our generated standard cells exactly the same size of unithd or unithddb1. Which way would you recommend, looking forward to your advice.

This is a good question for the Openlane team. It may be possible to just add the SITE macro to your own macro set. As far as I know, Openlane uses a merged file that contains the .tlef file and all the LEF macro files passed to it, so it shouldn't care if the SITE definition is in one file or the other.

Thanks! I'm not sure if I could define the height randomly, say if newly defined height is not integer times of default unit height, I'd ask to the openlane team as well by creating a git issue.