This is probably a long shot but was anyone here involved in

Question

This is probably a long shot but was anyone here involved in the calibration of openRCX with the skywater PDK I ve been trying to follow the flow described here <https github com The OpenROAD Project OpenRCX blob master doc calibration txt> to generate the openRCX extraction rules but OpenROAD is segfaulting on the bench read spef command Are there any part of the SPEF standard that aren t supported by openRCX that might be causing the issue or any other things I could do make this work

Alex Hodges · Answer

Trying the RCX flow even on skywater doesn t seem to work Using the openRCX rules file errors in a different way trying to get the parasitics for a design using the command ```extract parasitics ext model file patterns rules cc model 12 max res 0 context depth 10 coupling threshold 0 1x``` results in ``` ERROR RCX 0487 No RC model read from the extraction model Ensure the right extRules file is used ``` That command is just taken from the RCX demo scripts Am I using the rules file incorrectly or is the rules file not up to date with the rest of the PDK latest openRCX latest OpenROAD

Matthew Guthaus · Answer

< Alex Hodges> Did you ever find a solution I m running into the same issue