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Knowing rerun number...

Larry Allen

Hey all,

I have a current limit circuit that I wanted to run over monte carlo simulations and trim the value at each mc state. Then I wanted to rerun those monte carlo states with the trimmed values at different temperatures. I wrote a veriloga block that does this for me and it works great except for the fact that I use a file in which I store a counter variable which keeps track of which mc state is being simulated. The problem comes in when the simulation terminates before all runs are done... The counter file isn't decremented all the way and the next time you run it reads the counter file's wrong value and ends up associating the wrong trimmed value to the mc state.

 What I would like to do, is to be able to read the re-run number directly into the veriloga code. I haven't found how to do this. Or to know that I'm at the 1st run and I can delete the counter file at the beginning and recreate it.

 Any ideas?

Any help is appreciated. Thanks,

Larry.

  •  Hi Larry,

    Can you read information from the mcdata or mcparam file that is in the simulation run directory, under the montecarlo directory; e.g. <sim_root>/<cct_name>/spectre/schematic/montecarlo, to find out the last iterationrun number performed?  If there is useful data there, can your verilog module parse and read it in?

    Sorry, this is the only idea I have, but I hope it might be helpful.

    Regards,

    Lawrence.

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