markdown/gh_discussions/Runtime/2880.md

estimate_parasitics -global_routing on a post-global_route design loaded via read_db

Tool: Parasitics Extraction

Subcategory: Global routing error

Conversation

nayiri-k

Is it possible to run estimate_parasitics -global_routing on a post-global_route design that's been loaded via the read_db command? As in, global_route has been run on the design before it was saved with write_db, but global_route has not been run in this current OpenROAD session. I keep getting this error:

>>> read_db post_global_route
>>> estimate_parasitics -global_routing
[ERROR RSZ-0005] Run global_route before estimating parasitics for global routing.

maliberty

@eder-matheus I thought this was possible. Please comment

maliberty

Are you using a very old version of OR for this? The guides should be saved in the db.

maliberty

OR improves a lot over time so it is a good practice to test with a current version when you find a problem.