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DRC Fixing in Encounter

metalhead

 Hello

Ive been trying to do some DRC fixing in Cadence Ecounter. The basic problem I am facing is offgrid/nogrid routing errors. I tried setting the routeOngrid option true and routed the design again. But still there is no significant reduction in the number of errors. The total number of DRC errors is in the range of 1 million plus of which 900,000 odd are nogrid violations and 100,000 odd are offgrid. Can anyone please tell me about things I could do in routing by which I can fix these errors? Is routing/incremental routing the only way to fix DRC errors in Encounter? Any suggestions/replies are appreciated

Parents

  • Hey Shawn

    Thanks for your reply. I did run the verifyTracks command on the trial routed database. Turns out 6000 odd standard cell pins which have been placed offtrack, which eventually escalated into the huge number of off gid DRC errors. But, what could be the reason as to so many pins being placed off track. Is there a fundamental mismatch between LEF and standard cell lib?

Reply

  • Hey Shawn

    Thanks for your reply. I did run the verifyTracks command on the trial routed database. Turns out 6000 odd standard cell pins which have been placed offtrack, which eventually escalated into the huge number of off gid DRC errors. But, what could be the reason as to so many pins being placed off track. Is there a fundamental mismatch between LEF and standard cell lib?

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