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How to automate simulation of testbench, cycling schematic DUT in it.

JanH

 Hi,

 I'd like to automate the process of simulating a testbench (always the same toplevel testbench) in which the DUT's schematic view gets replaced automatically. 

We have a library with lots of DUT's (we don't know how many at this point but probably a lot, that's why we want to automate this), all with the same symbol but different topology in it. 

We would like to simulate all these DUT's with the same testbench using the same set of stimuli and post process the results afterwards. This is a very time consuming and repetitive action which we'd like to automate.

The problem I'm facing however is that I have no idea on how to automate this:

Taking care that for each DUT present in a library we can force the recreation of a netlist (using a config view as we intend to use extracted views for some of the cells instantiated in those DUT's), start the simulation on this recreated netlist, post-process the results (store it and/or merge it with the previous results) and when finished start over again with a new DUT.

 Any advise on how to accomplish this would be great!

Thank you.

 

Jan.

Parents

  • Hi Jan,

    1. You first need to create your testbench. I have posted an example on how to create a schematic by Skill at the following location: 

    2. Then you need to create an ocean script for your design, something that roughly contains the following (Assuming Spectre as your simulator):

    ; Ocean file starts here

    simulator('spectre)

    design("libName" "cellName" "schematic")

    ; Or design("PATH_TO_YOUR_DESIGN")

    ; any other options

    createNetlist()

    run()

    ;

    You better manually create your ocean script from ADE the first time to have an idea what to put in there.

    3. Load your ocean script to get it executed, i.e. get Spectre to run.

    4. Post process your results. Well, I can;t say anything for this one as you are the one who knows what to do ...

    Hope these snippets are helpful for you to start with. Look at http://groups.google.com/group/comp.cad.cadence/ where thousands of skill codes are available.

     

    Cheers, Riad.

    PS: My initial post from Google Chrome did not show any formating option, I may need to report this to Cadence ...

Reply

  • Hi Jan,

    1. You first need to create your testbench. I have posted an example on how to create a schematic by Skill at the following location: 

    2. Then you need to create an ocean script for your design, something that roughly contains the following (Assuming Spectre as your simulator):

    ; Ocean file starts here

    simulator('spectre)

    design("libName" "cellName" "schematic")

    ; Or design("PATH_TO_YOUR_DESIGN")

    ; any other options

    createNetlist()

    run()

    ;

    You better manually create your ocean script from ADE the first time to have an idea what to put in there.

    3. Load your ocean script to get it executed, i.e. get Spectre to run.

    4. Post process your results. Well, I can;t say anything for this one as you are the one who knows what to do ...

    Hope these snippets are helpful for you to start with. Look at http://groups.google.com/group/comp.cad.cadence/ where thousands of skill codes are available.

     

    Cheers, Riad.

    PS: My initial post from Google Chrome did not show any formating option, I may need to report this to Cadence ...

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