@Matt Liberty @Vijayan Krishnan Are we allowed to use set_dont_touch command in SDC ? I see adding this command in sdc create failure in openlane flow

[ERROR ODB-0370] Attempt to disconnect iterm of dont_touch instance u_skew_peri.u_mux_level_30.genblk1.u_mux
Error: resizer.tcl, 40 ODB-0370

for ports syntax follows

set_dont_touch [get_ports *]

I am looking for set dont touch for instance, which is typical standard sdc syntax set_dont_touch { <Instance Name> } Openroad Read.me: src/rsz/README.md also mention it ### Set Don't Touch

set_dont_touch instances_nets
unset_dont_touch instances_nets

The

set_dont_touch

command prevents the resizer commands from modifying instances or nets. Issue: https://github.com/The-OpenROAD-Project/OpenLane/issues/1572

Yes you can use it and odb enforces it. It looks like resizer is trying to violate dont_touch which would be a bug. Please fix a GH issue with a test case if possible

Github issue link shared above.

I am glad that the DB enforces it.