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

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

Renu Vibha 3 months ago

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

Top Replies

0 Vipulc 3 months ago in reply to Siliconmaster
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
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0 EDAHut 3 months ago 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?
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0 Vipulc 3 months ago in reply to EDAHut

Please share a screenshot of the session log or the error/warning message you are encountering.
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0 Vipulc 3 months ago in reply to EDAHut

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.
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0 EDAHut 3 months ago 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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Join us on Wednesday June 17, 2026 for a live “Ask Me Anything” Dedicated Expert Session: Constraint Manager

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