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A warning when doing timing-driven NanoRoute, Urgent!

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#Total number of DRC violations = 2
#Total number of violations on LAYER M1 = 2
#Total number of violations on LAYER M2 = 0
#Total number of violations on LAYER M3 = 0
#Total number of violations on LAYER M4 = 0
#Total number of violations on LAYER M5 = 0
#Total number of violations on LAYER M6 = 0
#Total number of violations on LAYER M7 = 0
#Total number of violations on LAYER M8 = 0
#option droute_honor_min_feature is default to true
#    because min feature/manufacturing grid is defined in the library
#Analyzing pin access.
#Done analyzing pin access.
#WARNING (NR) No sdc file was imported, Timing Analyzer is not called.
#WARNING (NR) Total 176 pins do not have the noise margin specified, in which 176 pins are IO pins. Default rise/fall noise margins 0.400000/0.500000 have been used.
#    48 out of 48 nets are selected for further SI-fixing!

Above is an excerpt from nanoroute log file, the red characters means SDC file is not imported? But I never see setNanoRouteMode can set which SDC file to use. How can I make this WARNING disappear? Need help

BRs


Originally posted in cdnusers.org by eminemshow
Parents

  • I would think nano would grab the SDC file already loaded in the FE session. Did you by chance load the design without the SDC file? Also, have you compared results of timingDriven nano to non-timingDriven? We usually turn on SI prevention, but leave timingDriven off.

    - Kari


    Originally posted in cdnusers.org by Kari
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  • I would think nano would grab the SDC file already loaded in the FE session. Did you by chance load the design without the SDC file? Also, have you compared results of timingDriven nano to non-timingDriven? We usually turn on SI prevention, but leave timingDriven off.

    - Kari


    Originally posted in cdnusers.org by Kari
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