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 routing missing in Virtuoso 

Last post Mon, Aug 6 2012 8:18 AM by wally1. 3 replies.
Started by quiet 06 Aug 2012 02:49 AM. Topic has 3 replies and 1470 views
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  • Mon, Aug 6 2012 2:49 AM

    • quiet
    • Not Ranked
    • Joined on Mon, Aug 6 2012
    • Posts 13
    • Points 215
    routing missing in Virtuoso Reply

    After P & R in Encounter, I stream out the design to gds. Then I stream in the file in Virtuoso.

    I can see all the instances and the related power rings. But I can't see the routing wires.

    What may be the problem?

    Thanks.

    • Post Points: 20
  • Mon, Aug 6 2012 7:48 AM

    • wally1
    • Top 50 Contributor
    • Joined on Mon, Aug 4 2008
    • Bellevue, WA
    • Posts 149
    • Points 2,915
    Re: routing missing in Virtuoso Reply

    The first thing I would check is make sure you have the NET object in your streamOut mapping file:

         layerName NET gdsNum dataType

    Then make sure you have that gdsNum/dataType defined in your mapping file for streaming into Virtuoso.

    - Brian

    • Post Points: 20
  • Mon, Aug 6 2012 8:03 AM

    • quiet
    • Not Ranked
    • Joined on Mon, Aug 6 2012
    • Posts 13
    • Points 215
    Re: routing missing in Virtuoso Reply

    Yes, I can find them in both two files.

    But I can see the nets for the power ring and power connections in the Virtuoso.

    Do power ring and interconnections use different layers?

    Thanks.

    • Post Points: 20
  • Mon, Aug 6 2012 8:18 AM

    • wally1
    • Top 50 Contributor
    • Joined on Mon, Aug 4 2008
    • Bellevue, WA
    • Posts 149
    • Points 2,915
    Re: routing missing in Virtuoso Reply

    Special Nets (typically power nets) and Signal Nets (also referred to as regular nets) are different object types in the Encounter database. So in the streamOut mapping file you'll specify them separately although you can map them to the same GDS layer number and datatype:

        layerName NET gdsNum dataType # This is for signal nets

        layerName SNET gdsNum dataType # This for special nets

    If the mapping files are correct and you have the layers displayed properly in Virtuoso, I'm not sure why you would not see them. I suggest opening a Service Request to get help with debugging this further.

    - Brian

    • Post Points: 5
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Started by quiet at 06 Aug 2012 02:49 AM. Topic has 3 replies.