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 How to set set_dont_touch in Encounter 

Last post Mon, Apr 9 2007 5:07 AM by archive. 6 replies.
Started by archive 09 Apr 2007 05:07 AM. Topic has 6 replies and 3315 views
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  • Mon, Apr 9 2007 5:07 AM

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    How to set set_dont_touch in Encounter Reply

    How to set dont_touch for a module in Encounter?


    Originally posted in cdnusers.org by sundaresan
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  • Mon, Apr 9 2007 6:39 PM

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    RE: How to set set_dont_touch in Encounter Reply

    Hello Sudersan,

    I have used the below option , but i used the same in SDC .

    How to specify don't_touch instance ??
    STEP-1 :
    # DELAY CELL

    set_dont_touch [get_cells I_cdnuser_cts/S_CKsunderM_DLY_1 ]
    set_dont_touch [get_cells I_cdnuser_cts/S_CKsudarsanM_DLY_2 ]

    How to load this on to Encounter ??
    STEP-2 :
    loadTimingCon -incr ./SDC/dont_touch_cell.sdc

    Hope this will satisfy to query .

    Do let me know if you need further clarifications .

    regards,
    Mohan


    Originally posted in cdnusers.org by mohanch007
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  • Mon, Apr 9 2007 10:44 PM

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    RE: How to set set_dont_touch in Encounter Reply

    Thanks mohan, its working..........


    Originally posted in cdnusers.org by sundaresan
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  • Wed, Mar 26 2008 2:19 PM

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    RE: How to set set_dont_touch in Encounter Reply

    I have found that this command is only respected for 1 round of optimization commands. It seems, that if I set a group of books as dont_touch, that is honored for the first optimization. If I then route, and do post-opt, the dont_touch dissapears. I have found I need to run the dont_touch command often, and upon each import of the design. Is this normal?


    Originally posted in cdnusers.org by mboudreaux
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  • Wed, Mar 26 2008 3:40 PM

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    RE: How to set set_dont_touch in Encounter Reply

    dbSetIsNetDontTouch [dbGetNetByName your_net_name_here] 1 dbSetIsInstDontTouch [dbGetInstByName your_hierarchy/your_instance] 1


    Originally posted in cdnusers.org by sreeb
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  • Thu, Mar 27 2008 8:39 AM

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    RE: How to set set_dont_touch in Encounter Reply

    Did you try adding the dont_touch commands to your constraint file, instead of entering them on the command line?


    Originally posted in cdnusers.org by Kari
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  • Thu, Mar 27 2008 2:07 PM

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    RE: How to set set_dont_touch in Encounter Reply

    This didn't format very well the first time. To don't touch a net: dbSetIsNetDontTouch [dbGetNetByName your_net_name_here] 1 To don't touch an instance: dbSetIsInstDontTouch [dbGetInstByName your_hierarchy/your_instance] 1 I think you wanted to target a module. Modules are instances but I haven't actually tried don't touching any instances that weren't cells.


    Originally posted in cdnusers.org by sreeb
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Started by archive at 09 Apr 2007 05:07 AM. Topic has 6 replies.