• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. Digital Implementation
  3. MMMC cdB library in Voltus or Tempus 21.10

Stats

  • Locked Locked
  • Replies 0
  • Subscribers 91
  • Views 9616
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

MMMC cdB library in Voltus or Tempus 21.10

jeffreypr293
jeffreypr293 over 3 years ago

Hi,

I am using Innovus/Voltus/Tempus 21.10 but experiences a fatal error when loading the design finished by Innovus in Voltus or Tempus: (read_db -oa_lib_cell_view ; actually the first command in the init script )

**ERROR: (IMPESI-3490): cdB based analysis is not supported with CMMMC configuration. This may result in inaccurate analysis. Configure and run analysis in SMSC if using cdBs.

The tool self-closes.

The MMMC av definition includes library sets with -timing links to ecsm libraries as well as -si links to cdb libraries for signal integrity. The implementation flow with innovus runs succesfully but signoff tools complain about the cdb libraries. When I run implementation without cdb, it is loaded without errors in voltus/tempus.

Same issue with flowkit/flowtool when si_files are defined .

I'm using oa libraries throughout the entire flow. How should I load the oa library in voltus correctly and switch to SMSC? Or is the cdb based analysis deprecated? 

Similar report here: https://community.cadence.com/cadence_technology_forums/f/digital-implementation/49165/impesi-3490-error-in-tempus 

Thanks a lot!

  • Cancel

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.

© 2025 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information