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 Manual CTS report 

Last post Mon, Jan 6 2014 9:18 PM by ajay01. 3 replies.
Started by Yuqi 06 Feb 2013 12:20 AM. Topic has 3 replies and 5702 views
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  • Wed, Feb 6 2013 12:20 AM

    • Yuqi
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    • Joined on Tue, Feb 5 2013
    • Posts 6
    • Points 105
    Manual CTS report Reply

    Hi everyone,

    I am currently doing a project mainly focus on clock tree synthesis in Cadence Soc Encounter. As I need  to study different topology of clock trees, I am using the manual mode CTS. What I have done is:

    1.use specifyClockTree command to read in the ctstch file

    2.use ckSynthesis command to do the actual clock tree synthesis

    3.use routeClkNetWithGuide command to do the clock net routing

    After these steps, the clock tree had been synthesized, buffers had been inserted and clock nets had been routed. Beside the optimization process, I think the clock tree had been at least generated  successfully so far.

    So I want to take a look about the information of the clock tree, such as skew or any other delay informations. That's why I went on use the reportClockTree command. And here comes the problem, the file generated by the command only has a title inside but nothing left.

    When using the auto CTS flow,   reportClockTree works just fine.

    Does anyone knows why? How can I get the report under manual cts mode? Besides, did I miss any critical step in the manual cts flow?

    Thanks for any help

    Regards

    Yuqi 

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    • Post Points: 35
  • Mon, Feb 18 2013 3:59 AM

    • ajay01
    • Top 500 Contributor
    • Joined on Tue, Feb 12 2013
    • ahemdabad, Gujarat
    • Posts 32
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    Re: Manual CTS report Reply

     hi,

    after doing first two step try command clockDesign

    and also give -outDir and -specFile with it.

    you will get clock tree report  in outdir which you specify.and it contain all clock information..

    regards,

    ajay01

    • Post Points: 5
  • Mon, Jan 6 2014 9:34 AM

    Re: Manual CTS report Reply

    Hi,

    I want to know how to manual CTS in encounter. Can you please tell me how to do build H-tree in encounter ? 

    Thanks,

    Nitin 

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  • Mon, Jan 6 2014 9:18 PM

    • ajay01
    • Top 500 Contributor
    • Joined on Tue, Feb 12 2013
    • ahemdabad, Gujarat
    • Posts 32
    • Points 415
    Re: Manual CTS report Reply

     Hi nitin,

    you can use below command for that...

    cleanupSpecifyClockTree

    clockDesign  -specFile *.ctstch  -outDir -skipTimedesign -macromodel *.ctsmdl

    for that you must need .ctstch file in which all clock specification contain.

    And nowday pepole are using ccopt you can also refer that document from net.

    Thanks,

    Ajay

    • Post Points: 5
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Started by Yuqi at 06 Feb 2013 12:20 AM. Topic has 3 replies.