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BSIM-CMG

analogy

Is there a minimum requirement as far as MMSIM is concerned for BSIM-CMG models?

  • Andrew Beckett

    bsimcmg was introduced in MMSIM 7.2. You can tell by typing "spectre -h bsimcmg".

    Regards,

    Andrew.

  • analogy

    What version does MMSIM0701179 correspond ?

    About the command, I get an error evaluating "spectre -h bsimcmg"

  • Andrew Beckett

    Don't know, because it doesn't look like one of our version numbers.  Type "spectre -W" at the Unix prompt to find out (that is an uppercase W)

  • analogy
    Says, command not found. By the way, Cadence is setup on remote server.
  • analogy

    If it helps, this is on my .csh file for MMSIM

    setenv MMSIMHOME /apps/cadence/MMSIM0701179

    setenv MMSIM_PATH $MMSIMHOME/tools/bin

    setenv SPECTRE_FEATURE_FILE $MMSIMHOME/tools/spectre/etc/files/spectre.dat

    setenv PATH "${MMSIMHOME}/tools/bin:${PATH}"

    setenv PATH "${MMSIMHOME}/tools/vpcd/bin:${PATH}"

  • Andrew Beckett
    When you run simulations from ADE, you'll get a log file displayed. The spectre version number is shown at the top of that log file.
  • analogy

    I guess I figured it out from shell.The MMSIM version is 7.0.1.179.ISR16.It's a pretty old version of spectre compared to using Cadence Virtuoso IC 6.1.6

    This means we have MMSIM 7 installed on our cadence directory. Is MMSIM upgrade free ? Considering BSIM-CMG is incorporated in MMSIM 7.2 ?

    Also , I have heard people using pdks modeled on BSIM-CMG to be running (with little success) on older version of cadence , with probably older version of MMSIM.

  • Andrew Beckett

    MMSIM70 was released in about 2007, so I agree, it's rather old to be using with IC616.

    Provided you have a maintenance or subscription contract, or accessing it via a University program, moving to newer releases of any stream is no problem (after all, you have moved to IC616). So you can use MMSIM14.1 (there have been 7 major releases of MMSIM since the version you are using).

    It's possible some people are using a Verilog-A implementation of bsimcmg with an older MMSIM version, but there really is no good reason to do that. The performance will be worse for a start.

    Regards,

    Andrew.

  • analogy

    About predictive models ( '.pm' ) : There has been an ongoing discussion as to how one can incorporate predictive models to use SPECTRE for simulation.So, is it straightforward with newer MMSIM 14.1 compared to discussion in thread back in 2011 ?

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