Erik van Zijst

05/16/2021, 6:59 AM
I'm a total novice here, but there seems to be a fair amount of space between the cells

Matthew Guthaus

05/16/2021, 2:11 PM
Routing is usually the bottleneck that limits area, not the cells. Also, that space will be filled with well taps (which may already be inserted) and supply decoupling caps
The PL_TARGET_DENSITY option determines how much to spread out during placement. If you have a relatively sized floorplan, there is a variable for density there too

Tayyeb Mahmood

05/23/2021, 9:47 AM
I second @Matthew Guthaus as this flow is routing-limited. You are fortunate to have it, as below I posted a problem to relax a tightly placed design that was impossible to route.