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Congestion + Report RC + silicon ensemble

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I have a routed design (using silicon ensemble) to begin with to which I make modifications like adding additional logic (nets and components) afterwhich I place the design all over again and re-route. Is it possible to estimate congestion - in view of new nets/cells being added? How do I quantify congestion?

Is it possible to get capacitance information - using the dspf files that are written out? What do I look for either in a .dspf or .rspf file? How do i use the HyperExtract option while doing report RC - will that help?

I currently have def/dspf/rspf/setload files of design before modification and def/dspf/rspf/setload files of design after modification.

Any help would be appreciated.


Originally posted in cdnusers.org by kdurais
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    HI ,
    I am not sure if this can work around for analysing and the congestion .
    In my understanding you mean to say about ECO -right !!
    Its all depends on :
    1. how many nets or instances you have modified after routing initially .
    check with Eco report command
    2. to analysis how big the difference just compare two report files after
    global routing
    even you can get map displayed .

    Regards,
    Mohan


    Originally posted in cdnusers.org by mohanch007

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