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Conformal-LP : Understanding liberty files.

nitint08
Hi

Conformal can read liberty files but the relevant lowpower special cells
are not recognised until those are specially specified with define_* cpf command.

Since Conformal has all the information of library cells (i.e. AON-cells, retention-
cells, power-switches, iso-cells,level-shifters etc) thus it would be more benefical
if this information can also be provided to the user so that he can correct his
list of cells via relevant define_* commands.

Regards
NitinT
Parents

  • Sorry, I don't remember the LP liberty results from 9.1. I do see some problems with the order of commands in your script.

    Here is a sample dofile I got from the online "web interface" documentation

    set lowpower option -netlist_style logical

    //set lowpower option -netlist_style hybrid

    //set lowpower option -netlist_style physical

    read library -append -liberty -lp <liberty files>

    read design <design_files>

    report design data

    report black box -class

    read power intent -cpf <CPF files> -post_synthesis

    //read power intent -cpf <CPF files> -post_route

    commit power intent

    analyze power domain

     

    The web interface documentation is opened via

    SETUP> set web interface on

    There are many sample dofile there.

    There are also "Rapid Adoption Kits" or RAKs located here

    http://support.cadence.com/raks 

    or for CLP:

    http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:DocumentViewer;src=wp;q
    =ProductInformation/Functional_Verification/ApplicationPackages/Application
    PackageHome.htm

    This should point you in the right direction. I wouldn't continue working with 9.1 for LP liberty since that version was early in the LP liberty adoption phase. 

     

    -ts

Reply

  • Sorry, I don't remember the LP liberty results from 9.1. I do see some problems with the order of commands in your script.

    Here is a sample dofile I got from the online "web interface" documentation

    set lowpower option -netlist_style logical

    //set lowpower option -netlist_style hybrid

    //set lowpower option -netlist_style physical

    read library -append -liberty -lp <liberty files>

    read design <design_files>

    report design data

    report black box -class

    read power intent -cpf <CPF files> -post_synthesis

    //read power intent -cpf <CPF files> -post_route

    commit power intent

    analyze power domain

     

    The web interface documentation is opened via

    SETUP> set web interface on

    There are many sample dofile there.

    There are also "Rapid Adoption Kits" or RAKs located here

    http://support.cadence.com/raks 

    or for CLP:

    http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:DocumentViewer;src=wp;q
    =ProductInformation/Functional_Verification/ApplicationPackages/Application
    PackageHome.htm

    This should point you in the right direction. I wouldn't continue working with 9.1 for LP liberty since that version was early in the LP liberty adoption phase. 

     

    -ts

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