Hello,
I am trying to migrate my digital synthesis flow from Encounter (v12.00-p002_1) to Innovus (v19.14-s105_1) by updating the script that used to work with Encounter. After replacing the commands that become obsolete in Innovus (mainly updating CTS to the ccopt flow), I was able to let the flow run except for a hold time issue. Every time I use "optDesign -hold" to try to fix hold time issue, I get the following:
-> "1 net: Could not be fixed as the net is considered as IPO ignored by the process".
This causes a lot of hold violation to be ignored. This happens no matter at which stage I invoke the "optDesign -hold" command, and I am testing this on a simple scan chain design. I did not face this issue before with Encounter.
I would appreciate any help on solving this issue, please.
Many thanks in advance!
Cadence tool versions:
- Virtuoso: sub-version IC6.1.8-64b.500.11
- Encounter/Timing: v12.00-p002_1
- Innovus: v19.14-s105_1
Kindest Regards,
Nader Fathy