QRC tch file

If you're doing MMMC, then your analysis views were set up with the create_analysis_view command which included a -delay_corner option. The delay corners are setup up with the create_delay_corner command which has a -rc_corner option. Finally, the create_rc_corner command is what points to the QRC tech files:

create_rc_corner -name worst \
                -cap_table "worst.CapTbl" \
                -T 125 \
                -qx_tech_file "worst.tch"

Having said that, extractRC is the built-in FE extraction which uses cap tables. If you want to use QRC for extraction, you'll need to use runQRC. QRC will then be run for all corners referenced by your active views.

So, just make sure you've got everything set up correctly in your MMMC commands, and you're good to go! (When using MMMC, it's the data in the MMMC commands that matters, not what's in the .conf file.)

- Kari

 Thanks Kari. That was really helpful. Just wondering If i am doing timeDesign -signoff, do i still need to to runQRC before doing timeDesign or does the switch -signoff tells the tool to call runQRC iteratively to generate and annotate SPEF files for RC corners.

 You're welcome, I'm glad it helped!

Using the -signoff switch with timeDesign will automatically run QRC for all your active views, so you don't have to do it separately beforehand.  If you want detailed reports for each view (meaning, a separate directory for each view with all the reports for that view), make sure to use -expandedViews.

- Kari