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The-OpenROAD-Project / OpenLane

OpenLane is an automated RTL to GDSII flow based on several components including OpenROAD, Yosys, Magic, Netgen and custom methodology scripts for design exploration and optimization.
https://openlane.readthedocs.io/
Apache License 2.0
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[WARNING ORD-1012] Liberty cell has no LEF master. #1895

Closed akhilesh911 closed 1 year ago

akhilesh911 commented 1 year ago

Description

Hello everyone, I am trying to read verilog file (netlist) using openroad app. I have followed following steps: 1) read_liberty pdks/gf180mcuC/libs.ref/gf180mcu_fd_sc_mcu7t5v0/liberty/gf180mcu_fd_sc_mcu7t5v0__tt_025C_5v00.lib 2) read_lef pdks/gf180mcuC/libs.ref/gf180mcu_fd_sc_mcu7t5v0/techlef/gf180mcu_fd_sc_mcu7t5v0.tlef 3) read_verilog /path/to/results/synthesis/picosoc.v 4) link_design After the last step, I am getting error as: Liberty cell has no LEF master instance LEF master not found. I request you to suggest the solutions if any. Thank you log_output.zip

Expected Behavior

No expected errors.

Environment report

Kernel: Linux v5.4.0-148-generic
Distribution: ubuntu 18.04
Python: v3.6.9 (OK)
Container Engine: docker v20.10.24 (OK)
OpenLane Git Version: 09cfff0dbb82d67405cddb65ec2089834e97198d
pip: INSTALLED
python-venv: INSTALLED
---
PDK Version Verification Status: FAILED
/home/signoff/openlane1/OpenLane/pdks/sky130A not found.
Traceback (most recent call last):
  File "/home/signoff/openlane1/OpenLane/dependencies/verify_versions.py", line 76, in verify_versions
    raise Exception(f"{pdk_dir} not found.")
Exception: /home/signoff/openlane1/OpenLane/pdks/sky130A not found.

Failed to verify sky130A.
---
Git Log (Last 3 Commits)

09cfff0d 2023-07-06T21:10:16+03:00 Fix lint errors in BM64 verilog sources (#1878) - Kareem Farid -  (HEAD -> master, tag: 2023.07.07, origin/master, origin/HEAD)
5998726e 2023-07-06T18:25:24+03:00 Always raise an exception when a design fails in the CI (#1879) - Kareem Farid -  ()
a0c0945d 2023-07-06T15:17:37+03:00 Make synth checks more aggressive (#1880) - Kareem Farid -  ()
---
Git Remotes

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

Reproduction material

No reproduction material.

Relevant log output

Log output is attached in log_output file.
kareefardi commented 1 year ago

You need to read the standard cells lef after the techlef. The techlef defines technology related parameters, such as metal layers, vias, site and others while the standard cells lef contains the definitions of the cells themselves. That's why you got the error "no LEF master", because standard cells lef is not read and hence cells are not defined.

vijayank88 commented 1 year ago

@akhilesh911 Before reading netlist, run read_lef gf180mcuC/libs.ref/gf180mcu_fd_sc_mcu7t5v0/lef/gf180mcu_fd_sc_mcu7t5v0.lef

Otherwise in OpenLane flow runs/RUN_2023..../tmp/merged.nom.lef read that simply along with .lib

akhilesh911 commented 1 year ago

I understood. Thank you @kareefardi @vijayank88