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Cadence n port simulation , bbspice problem

Hello to everyone in the community. I was simulating a mm-wave vco and i had extracted some s parameters from ADS Momentus which i introduced to cadence via a nport while i choose the interpolation method to be bbspice. My problem is that during the past days whenever i choose to simulate a nport with bb spice the simulation nevers ends. The log file states "Peak resident memory uses=170 Mbytes" and just stays there for hours. There is NO error in the log file. I cannot simulate any file with bbspice not just the vco design.

Thank you in advance

Andrew Beckett over 2 years ago

I suggest you start by taking a look at Tawna's excellent 7 Habits of Highly Successful S-Parameters, Spectre 21.1

Andrew
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Psyliver over 2 years ago in reply to Andrew Beckett

This is what the log file states

Time for EDB Visiting: CPU = 266.959 ms, elapsed = 266.91 ms.
Time accumulated: CPU = 4.54631 s, elapsed = 9.27344 s.
Peak resident memory used = 174 Mbytes.

The simulation just stays there for hours.

Yesterday it was woking all fine. It is not ordinary something like that to happen.

Every bbspice simulation just stays in the same point.

John
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Andrew Beckett over 2 years ago in reply to Psyliver

John,

Beyond looking at Tawna's guidelines, I would suggest contacting customer support. It's pretty unlikely anyone will be able to debug this without seeing the problem and the s-parameter data.

Andrew
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Psyliver over 2 years ago in reply to Andrew Beckett

Thank you for you help!
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