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how to locate most computational extensive node/cell/circuit

DavidLou

hello experts, 

I suppose there should be some command/tool to list the computation heavy cell/circuit so designers can swap with faster behavioral models? how can I do that? 

IC617 + Spectre 16.1

thanks,

David

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  • Andrew Beckett

    Hi David,

    It's not that simple, because trying to identify the block in the design which causes performance challenges in the simulator is quite hard to identify. We do have the +diagnose option (which can be turned on via Setup->Environment) which produces both a more detailed log file with lots of info as to what might be causing the time steps to reduce, or convergence issues, or time step rejection and so on, as well as adding some additional info into the transient waveform database that allows you to plot the simulation progress over time so you can then work out where to look in the log file in order to potentially identify issues.

    Regards,

    Andrew.

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  • Andrew Beckett

    Hi David,

    It's not that simple, because trying to identify the block in the design which causes performance challenges in the simulator is quite hard to identify. We do have the +diagnose option (which can be turned on via Setup->Environment) which produces both a more detailed log file with lots of info as to what might be causing the time steps to reduce, or convergence issues, or time step rejection and so on, as well as adding some additional info into the transient waveform database that allows you to plot the simulation progress over time so you can then work out where to look in the log file in order to potentially identify issues.

    Regards,

    Andrew.

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