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Monte Carlo Error when simulating larger array (smaller array runs just fine)

fastandig

I have an array of 64 by 64 simple cells, the cells consist of no more than 10 transistors and their output is either VDD or GND (with mismatch). My problem is when I simulate for 64 rows (with each row consisting of 64 cells), Monte-Carlo throws up an error shown here:

Interestingly when I run for fewer rows, for example 32 rows, Monte-carlo runs fine and I get the expected results. I am not exactly sure what the problem is so would appreciate any help. Thanks.

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  • Andrew Beckett

    The only report of this specific error I've seen is when using the scaled-sigma sampling mechanism for high-sigma yield mode in ADE, and that was with an internal case. Without knowing the specifics of  your technology or the models, it's hard to know what the problem is.

    Please contact customer support.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    The only report of this specific error I've seen is when using the scaled-sigma sampling mechanism for high-sigma yield mode in ADE, and that was with an internal case. Without knowing the specifics of  your technology or the models, it's hard to know what the problem is.

    Please contact customer support.

    Regards,

    Andrew.

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