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Montecarlo simulation not starting in ADE-XL

saikatc

Hi,

I have designed a schematic, which I simulated in ADEL version IC6.1.6-64b.500.8

While running montecarlo simulation, I observed, the simulation did not even start.  I don't know exactly where it has gone wrong.  There is no log where I can find any error messages even. 

I will appreciate any kind of help on this.

Regards

Saikat Chatterjee

  • dirac33
    I have the exact same issue. I am using version IC6.1.5-64b.500.10
  • Andrew Beckett

    First thing I'd suggest is to not use a version that's so old; secondly look in the job log file (right mouse button over the little terminal window in ADE XL). Then try opening the terminal (go to the detail view in ADE XL, and right mouse button->open terminal over one of the monte carlo points) - take a look to see if the input.scs is present in the netlist directory and so on.

    Debugging this via the forums is hard with so little information - customer support would be better, but they would also tell  you not to use a version that is probably 4.5 years old or so. A lot has changed in ADE since then.

    Andrew.

  • dirac33

    Hi Andrew,

    Thanks for the quick reply.

    Unfortunately I don't have much choice over the version to use, since I am using the version provided by my university.  

    Furthermore, opening the terminal for each Monte Carlo run does not provide any information about the current. I've even reduced the number of points from 100 to 1 and even that single point is still pending, while the terminal window doesn't provide any updated information-no netlist or anything.

    Thanks for your help.

  • Andrew Beckett

    Can you run corner simulations or sweeps in ADE XL? Trying to understand if anything runs (other than single simulations). You could also try just running "virtuoso -nograph" in a UNIX terminal to see if that works or not.

    Andrew

  • jaro
    We saw similar issues, and I traced it back to {installdir}/tools/bin/cdsXvncd failing in several earlier versions of IC6 -- sorry, I don't recall the failure mode. One theoretical workaround would be to replace that VNC daemon with a symbolic link to a different VNC daemon, like /usr/bin/Xtightnvc
    I don't know if this is still a problem in the latest releases.
    - j
  • Andrew Beckett

    I would strongly recommend against this. Most likely this would only fail because of a missing shared library. Early IC61 versions didn't use VNC anyway - they used Xndx which had other problems - usually because of shared libraries too.

    If in doubt, contact customer support and we can help you through it.

    Andrew.

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