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#openlane
Title
# openlane
m

Matt Venn

12/07/2020, 6:08 PM
openlane has FP_ASPECT_RATIO. which is defined in the docs as The core's aspect ratio (height / width). As I want it taller rather than wider, I choose 2. Then the tools fail because apparently it can only be 0 -> 1. So is there any way of getting taller?
a

Amr Gouhar

12/07/2020, 6:14 PM
set
FP_SIZING
to
absolute
and then set the
DIE_AREA
(probably it's a good idea to check a previously generated DEF with the relative
FP_SIZING
to get a good estimate on what the DIE_AREA should be).
@Ahmed Ghazy Do you know another way to do that? ^
a

Ahmed Ghazy

12/07/2020, 6:18 PM
Not really, it's an
init_fp
limitation. Should be easy to fix and PR to OpenROAD though.