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 NanoRoute doesn't route multi height design 

Last post Tue, Mar 5 2013 10:51 AM by Kari. 1 replies.
Started by scudex 06 Feb 2013 01:00 AM. Topic has 1 replies and 1296 views
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  • Wed, Feb 6 2013 1:00 AM

    • scudex
    • Not Ranked
    • Joined on Fri, Feb 11 2011
    • Frankfurt (Oder), Brandenburg
    • Posts 7
    • Points 65
    NanoRoute doesn't route multi height design Reply

    Hello,

     as a test case I have a mixed design with 4 rows only. 3 standard core cell rows and 1 second row, that has a multiple of standard cell row height & pitch. Site definition is done properly. The design contains 2 cells only, one per each row. I created the floorplan, defined the globalNetConnect rules, routed the power. Placement and trialroute work fine. Everything is on grid.

    Tech LEF is done properly

    trialRoute:

    Phase 1l Overflow: 0.00% H + 0.00% V (0:00:00.0 420.7M)

    Congestion distribution:
    Remain    cntH        cntV
    --------------------------------------
    --------------------------------------
      1:    0     0.00%    3     0.27%
      2:    0     0.00%    3     0.27%
      3:    0     0.00%    6     0.53%
      4:    98     8.73%    4     0.36%
      5:    1024    91.27%    1106    98.57%

     When I start NanoRoute I got this last line and it hangs up ... for hours maybe days.

     #NanoRoute Version v11.12-s011 NR121003-1304/11_10_USR2-UB
    #Start routing data preparation.

     So I quit and try it again, The funny thing, I can route the nets manully without violations. If one cell is deleted before, NanoRoute routes. And further, I make a block of the multi height design, it can be routed properly. But  both type of cells together in one design doesn't work.

    Has anyone  an idea, did I forgot something in the setup?

     

     Thanks & regards,

    scudex

     

     

     

     

    • Post Points: 20
  • Tue, Mar 5 2013 10:51 AM

    • Kari
    • Top 10 Contributor
    • Joined on Tue, Jul 15 2008
    • Cary, NC
    • Posts 684
    • Points 13,590
    Re: NanoRoute doesn't route multi height design Reply
    does checkPlace run clean? 
    • Post Points: 5
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Started by scudex at 06 Feb 2013 01:00 AM. Topic has 1 replies.