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Join us on Wednesday June 17, 2026 for a live “Ask Me Anything” Dedicated Expert Session: Constraint Manager

Renu Vibha

Got Questions on Constraint Manager?

Want clarity on new features and solving everyday design challenges?

Ask a Cadence expert— LIVE

 Join Us Here

June 17, 2026 | 7:30–8:30 PM IST

Topics:

  • Electrical Constraints
  • Physical & Spacing Constraints

 

Let’s make this an engaging, insightful, and impactful session together!

Bring your questions. Share your experiences. Be part of the energy

  • Vipulc
    0 in reply to edahub
    • Matched Delay: all pin pairs must match each other within tolerance
    • Relative Delay: all pin pairs must match a specific target after applying delta

    Used for bus-to-clock alignment and timing control

  • KS202606109251
    0 in reply to CF202606104231

    I am also experiencing a clearance issue where my custom spacing constraints set (cset) is being ignored. Allegro 17.4 is applying a different clearance rule, but I can’t locate where the override is happening . In 17.4 constraint manager interface how can o audit a specific net to see the exact hierarchy of applied rules (global vs class vs region) and find out what is overriding my cset?

  • Vipulc
    0 in reply to KS202606109251
    Please share a screenshot of the session log or the error/warning message you are encountering.
  • Vipulc
    0 in reply to KS202606109251

    Check for lock files (.lck) and ensure the design is not open in another session; also re-associate the board file in Capture if needed.

    Review the netrev.lst file for hidden warnings/errors, and verify that the “Update PCB Editor board (Netrev)” option is enabled.

    If the issue persists, generate the netlist manually and perform a File > Import > Logic in Allegro to force the update.

  • KS202606109251
    0 in reply to Vipulc

    Ok will check and see.

    Is it ok to migrate to 24.1? How is the feedback ?

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