@User where do you see the overlap issue and in which technology

see my early post, it seems @Andy was able to reproduce same on spm / sky130A https://github.com/efabless/openlane/issues/4

Ok, I will take a look

@mehdi: I believe you mentioned that this is related to the incorrect LEF class of tap cells.

@Ahmed Ghazy yes, I see overlaps on the power rails. But I fixed that by removing OBS on the VPWR/VGND

@mehdi: There aren't OBS shapes on the tap cell nor the decap cell though? At least in the version of skywater-pdk used by openlane.

@Ahmed Ghazy there aren't any in hd. I am using hs. Also they shouldn't be in all cells not only tap and decap. I think..

I’m using hd, I can see OBS in decaps, not in tap.

@20Mhz: Are you using the skywater-pdk commit

4e5e318e0cc578090e1ae7d6f2cb1ec99f363120

mentioned on the README? Because that one doesn't have OBS shapes in the LEF view of decaps. (This would also explain why you got only 1 .mag file)

Which README are referring to? Want to check if I’m missing something elese. Do you mean this commit? Seems related to liberty… https://github.com/google/skywater-pdk/commit/4e5e318e0cc578090e1ae7d6f2cb1ec99f363120?diff=split

Referring to this section: https://github.com/efabless/openlane/#setting-up-skywater-pdk . There is a

git checkout 4e5e318e0cc578090e1ae7d6f2cb1ec99f363120

that selects a commit that worked well. The later skywater-pdk updates probably broke open_pdks because of the END LIBRARY thing, and the cells did seem to have differently shaped pins for some reason causing pin access issue for TritonRoute... (cc: @tnt)

Yeah, however given I'm working on the docs and scrpts in the skuwater-pdk it's just not practical to not be at the latest version.

@tnt: Got it 👍 That's basically what we're doing as well on the develop branch; the issues with the latest skywater-pdk master need to be fixed/reported anyway.