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Performance of BSIM-CMG 110.0.0 FinFET SPICE model in spectre simulator

MrFinFET

Hello,

recently I got interested in the BSIM-CMG FinFET SPICE model.

Looking at the Verilog-A reference code I wonder what performance

can be achieved on current multi-core/multi-threading Xeons with

optimized C code.

I would be interested to learn what the evaluation time is for one

single iteration of latest BSIM-CMG in spectre.

I estimate ballpark in the tens of micro seconds but would be curious

to know from spectre R&D experts what the state of the art is here.

Thank You !

  • Andrew Beckett

    This is something that doesn't make a great deal of sense; whilst the execution of the actual code in the optimised C model of bsimcmg is part of the time taken, there's also the time taken in the matrix solve, which will depend on the rest of the circuit, how continuous the model is, how it converges - how many iterations needed to reach the relevant accuracy. So it would be a pretty meaningless figure to tell you the evaluation time for a single iteration of the C code for the model.

    We also don't publish such information because as you can imagine it's rather sensitive information that could be useful for competing simulators to know and is of no value to a user of the simulator (given the other contributions to simulation speed that I mentioned above). Of course we do profiling of the various aspects of simulation internally, but this is not information to be placed in the public domain, I'm afraid.

    Regards,

    Andrew.

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