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 setup optimisation without sdc file  

Last post Tue, May 13 2008 12:15 AM by archive. 1 replies.
Started by archive 13 May 2008 12:15 AM. Topic has 1 replies and 1034 views
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  • Tue, May 13 2008 12:15 AM

    • archive
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    setup optimisation without sdc file Reply

    Dear all

    I am facing this situation for the first time. I was initially given a netlist with the corresponding .sdc file for place and route which went fine.

    Now i am given a new netlist with a few updates and no sdc file and am asked to change the prev one and carry further with place and route for time being .

    I dont no how to proceed with this. if i try give the prev SDC file . the loadtiming command gives error as nets not found

    can some one please give me some advice

    Thnk you in advance

    Suresh


    Originally posted in cdnusers.org by suresh235
    • Post Points: 0
  • Wed, May 14 2008 1:27 PM

    • archive
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    • Joined on Fri, Jul 4 2008
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    RE: setup optimisation without sdc file Reply

    Hi Suresh,

    We always ask our customer to provide an updated SDC with the new netlist. You can continue with the warnings about missing nets, but it won't be a very accurate test, because you'll be missing constraints. It's possible you could look at the new netlist and tell what the constraint needs to be changed to, but this can be difficult unless you are very familiar with the design. My opinion is that you need to press for matching constraints.

    - Kari


    Originally posted in cdnusers.org by Kari
    • Post Points: 0
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Started by archive at 13 May 2008 12:15 AM. Topic has 1 replies.