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 Multiple MinArea, No-Grid and Spacing Errors 

Last post Sun, Feb 16 2014 6:34 PM by Kabal. 0 replies.
Started by Kabal 16 Feb 2014 06:34 PM. Topic has 0 replies and 1763 views
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  • Sun, Feb 16 2014 6:34 PM

    • Kabal
    • Top 50 Contributor
    • Joined on Thu, Sep 29 2011
    • NM, NM
    • Posts 183
    • Points 2,530
    Multiple MinArea, No-Grid and Spacing Errors Reply

    Using Encounter 13.2

    Defined .capTbl, .tch, .lef files, defined timing and other settings in viewdefinition. Got the design placed and routed. Once I start checking the design with verifyGeometry I see hundreds of thousands errors of different type like:

    Antenna

    MinArea

    No-Grid

    OffGrid

    Spacing

    Short

    Using the following commands did not help:
    setOptMode -fixDRC true
    optDesign -preCTS



    Then I used these commands:

    verifyTracks
    generateTracks 
    globalDetailRoute


    Now the amount of errors after verifyGeometry check reduced to:

    18 MinArea errors

    171152 No-Grid errors

    239 Spacing errors

    So I see some improvement but I cannot get it any better yet. Those >170k MinArea errors and 239 Spacing errors tell me that something is wrong maybe with the flow or with the way how the tool interprets constraints. But I am not sure what exactly could be wrong.

    The LEF files I am using are from the manufacturer and as they say were tested on many designs (the IBM 7RF Kit). So, I am assuming something is wrong on my side or in the way how I configure something.

    Anyone has some ideas where else would be worth looking at? 

    • Post Points: 5
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Started by Kabal at 16 Feb 2014 06:34 PM. Topic has 0 replies.