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Viewing Monte Carlo results having run spectre and viva standalone

SteveL

I have run montecarlo in spectre (13.1) standalone (from a netlist).  Then I attempted to view the results in viva (6.1.6) also standalone.  Viva sees the nominal and last iteration for all signals but not the other iterations (20 total).  All of the expected montecarlo files appear to be in the .raw directory as PSF, etc files.  Is there a means to view the entire set of results?  Should I be able to see all outputs or only the voltage on one net that was exported via a export netx = oceanEval(...) statement?

 The DC simulation consisted of 20 montecarlo runs with a 10 step temp variation within:

 mc1 montecarlo saveprocessparams=yes variations=all numruns=20 scalarfile="mc_results.dat"{
   swp sweep param=temp start=-55 stop=125 step=10 {
     oppoint dc oppoint=logfile
     export  vptat = oceanEval(" v(\"net30\" ?result 'dc ) ")
  }
}

Parents

  • You need to add the savefamilyplots=yes parameter to the montecarlo analysis if you want it to keep the raw waveforms for all of the points in the simulation. Normally it discards them to save disk space. The vptat will only save the scalar data for that measurement into an ASCII file (which you can't plot directly with ViVA - you'd have to use something like the code in solution 11026072 to read and process the data into a waveform.

    Andrew.

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  • You need to add the savefamilyplots=yes parameter to the montecarlo analysis if you want it to keep the raw waveforms for all of the points in the simulation. Normally it discards them to save disk space. The vptat will only save the scalar data for that measurement into an ASCII file (which you can't plot directly with ViVA - you'd have to use something like the code in solution 11026072 to read and process the data into a waveform.

    Andrew.

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