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Subject: Timing Violation Warning
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huyong
Posts: 3
Online: User is Offline
5/27/2008 10:20 PM  
I have run gate simulation with SDF. I meet the following warning.
Warning!  Timing violation
             Scheduled event for delayed signal of net "D" at time 275093160 PS was candeled!
              File: xxxxxxx line=xxx
              Scope: xxxxx

Can anybody tell me what this mean? I add +notchkmsg but this message still print. Can anybody tell me why?

Thanks!
douge
Posts: 13
Online: User is Offline
6/02/2008 7:26 AM  
Hello Huyong,

If you are asking what the message means.

A timing check verifies the timing performance of a design by making sure that critical events occur within given time limits. A timing check performs the following steps:
   1. Determines the elapsed time between two events.
   2. Compares the elapsed time to a specified minimum or maximum time limit.
   3. Reports a timing violation if the elapsed time occurs outside the specified time window.

If you are asking how to turn the message off:
I think (but not sure) You can add  +nonotifier +no_tchk_msg to your switches to turn the message off. Please let me know if it works

Best Regards
Doug
huyong
Posts: 3
Online: User is Offline
6/04/2008 11:09 PM  
Hi Doug

Thank you for you answer. I the +no_tchk_msg do not turn the message off. I use +ncnontcglitch to turn it off

Thanks
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