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Published 20 hours ago • verified publisher icon efabless

MPW-5 Tapeout fails with FEOL DRC violations

Open BrandonOng22 opened this issue 3 years ago • 4 comments

The precheck passed successfully. Tapeout fails with 4 FEOL drc violations. The violations are 'nwell.6' in the H3_sky130_fd_io__gpiov22_amux cell. The violation occurs outside of my design.

STDERR: [ WARN ] FEOL Check Result: 'caravel_00054489.oas' has 4 DRC violations.

feol_drc

BrandonOng22 avatar Mar 02 '22 18:03 BrandonOng22

thanks, this is a known issue and it's been solved in open_pdks already. Now we are waiting on it going live on the efabless server.

mattvenn avatar Mar 10 '22 14:03 mattvenn

thanks, this is a known issue and it's been solved in open_pdks already. Now we are waiting on it going live on the efabless server.

Thanks Matt. Is this something that I should just wait until it gets updated?

BrandonOng22 avatar Mar 10 '22 15:03 BrandonOng22

Yep, I'll close this issue when it's solved.

mattvenn avatar Mar 10 '22 15:03 mattvenn

@mattvenn : This was solved with a "hack" for MPW-five (failing cells are ignored by klayout DRC) and the issue should remain open until the proper fix (in open_pdks) gets applied to the server; and at that time we need to make sure that the klayout DRC hack is removed.

RTimothyEdwards avatar Mar 22 '22 14:03 RTimothyEdwards

This was corrected a long time ago by a workaround in open_pdks: sky130/custom/scripts/fix_gpiov2_gds.py. This ticket can be closed.

RTimothyEdwards avatar Sep 27 '22 20:09 RTimothyEdwards