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[Spectre] Extracting model parameters for each Monte-Carlo iteration

gilsoriano
gilsoriano over 11 years ago

Dear wizards,

 

I need help to extract information about model parameters for each Monte-Carlo iteration in a Spectre simulation.

 The scenario is as follows:

  • Several Monte-Carlo iterations of a transient. 
  • The netlist contains bsim4-based models.
  • Mismatch parameters are extracted to a file via montecarlo parameters: savemismatchparams, mismatchscalarfile and mismatchparamfile.
  • I'm using Cadence-Spectre 5.1.4.

For now, I have circumvented the issue by adding a line just before the transient analysis:

   paramInfo info what=all where=file file="MC_MODEL_PARAM" save=all

it does what I want but it has two drawbacks:

  1. It slows down simulations A LOT.
  2. It appends all the model parameters one after the next one, for each MC iteration, in the same file.

Basically, I got the problem solved, but I would be interested in knowing whether it can be done in a similar way as mismatch parameters (which results in different files for each MC iteration)

 

 Thanks for your help!

 

Cheers,

Carlos

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  • Andrew Beckett
    Andrew Beckett over 11 years ago

    Carlos,

    If you use what=models  it will save less information. Secondly, by using where=rawfile, it would save into the psf directory - and that way the data is organized by iteration number. It's binary, but easily processed using OCEAN functions.

    Regards,

    Andrew.

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  • Andrew Beckett
    Andrew Beckett over 11 years ago

    Carlos,

    If you use what=models  it will save less information. Secondly, by using where=rawfile, it would save into the psf directory - and that way the data is organized by iteration number. It's binary, but easily processed using OCEAN functions.

    Regards,

    Andrew.

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