#1816 magic lef write takes forever Issue created by mo-hosni Description After magic update, commit 541c95 LEF writing takes forever (3 hours and still stuck in writing). Expected Behavior LEF writing should not take more than a minute. Environment report

Kernel: Linux v4.19.0-21-cloud-amd64
Distribution: debian 10
Python: v3.7.3 (OK)
Container Engine: docker v20.10.15 (OK)
OpenLane Git Version: 541c95953c90428a7d716cb9095e66ba2e92896d
pip: INSTALLED
python-venv: INSTALLED
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PDK Version Verification Status: OK
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Git Log (Last 3 Commits)

541c9595 2023-05-22T17:13:52+03:00 [BOT] Update magic (#1778) - Openlane Bot -  (HEAD -> master, tag: 2023.05.23, origin/master, origin/HEAD)
791366fe 2023-05-22T14:01:37+03:00 Fix bugs when reading views for STA (#1809) - Kareem Farid -  ()
e5e58b64 2023-05-22T13:59:40+03:00 set `SCRIPTS_DIR` after saving an environment snapshot (#1810) - Kareem Farid -  ()
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Git Remotes

origin  git@github.com:The-OpenROAD-Project/OpenLane.git (fetch)
origin  git@github.com:The-OpenROAD-Project/OpenLane.git (push)

Reproduction material There is no reproducible, this is the openlane directory of the project. https://github.com/efabless/caravel/tree/caravan-mpw9-PnR/openlane/caravan_core Relevant log output

[INFO]: Writing abstract LEF
Generating LEF output /home/hosni/caravan/caravan-mpw9-PnR/caravel/openlane/caravan_core/runs/23_05_22_22_47/results/signoff/caravan_core.lef for cell caravan_core:
Diagnostic:  Write LEF header for cell caravan_core
Diagnostic:  Writing LEF output for cell caravan_core
Diagnostic:  Scale value is 0.005000

The-OpenROAD-Project/OpenLane