Community Mixed-Signal Design [explicit parameter sweeping][netlisting/simulation always...

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[explicit parameter sweeping][netlisting/simulation always pending]

IssacW

dear peer & tutors,

 

please see attached the problem in the next message.

simulations with "parameter sweeping" get stuck for good in netlisting phase.

instead, single-point simulation without "parameter sweeping" works well.

P.S. design variable sweeping in "DC" tab also works.

 

I suppose this new error indicates something has changed in the environment.

did you see a similar case before? thanks in advance.



  • in addition, I notice that the name of this highlighted file seems related to the problem.
    may I know the purpose or exact function of this "swift netlist service"?
     
     
     

  • in reply to IssacW

    This is part of the "LSCS" infrastructure - the netlisting and simulation are separated into different processes, which allows better management of the resources (netlisting requires a background virtuoso, whereas simulation doesn't need a virtuoso sitting around consuming memory whilst the simulation runs). With single jobs, there's "single job optimisation" turned on in most cases and so the netlisting is done in the foreground - when you have multiple points, it always starts a background process to run netlisting.

    You didn't mention which IC sub-version you're using - this will be in the Help→About menu.

    Does it work if you change to "ICRP" on the Job Policy form?

    Can you run (from the command line) "virtuoso -nograph" ?

    Regards,

    Andrew

  • in reply to Andrew Beckett

    hi Andrew and glad to have your insights.
     
    [1] as shown in the attached, can this sub-version be interpreted as "IC6.1.8 ISR21"?
    [2] it seems like "ICRP" couldn't fix this problem.
    [3] I could learn & try, though not familiar with the command line.
         I understood there are a lot of resources talking about this but it would be great to have your specific recommendation for the freshman like       me to get started. many thanks!
     
     
     
     

  • in reply to IssacW

    Just as you ran "virtuoso -W" can you run "virtuoso -nograph" - I am just trying to check that it starts. If ICRP doesn't work either, it suggests that Virtuoso cannot be launched non-graphically.

    Regards,

    Andrew

  • in reply to Andrew Beckett

    [1] "virtuoso -nograph" works well as shown below.
    [2] here is the latest update:
         I restart virtuoso again. this time both "LSCS" & "ICRP" can work.
         the problem disappears somehow.

    now I'm fine to close this ticket even without a clear understanding/solution......



  • in reply to Andrew Beckett

    anyway thanks a lot for your attention to my question : )

  • in reply to IssacW
    IssacW said:
    now I'm fine to close this ticket even without a clear understanding/solution......

    I should point out that this is not a "ticket" system. This is a community forum. if you want a tracked support system, you should submit a support case (aka ticket) at http://support.cadence.com 

    Anyway, glad your problem is resolved!

    Andrew

  • in reply to Andrew Beckett

    hi Andrew, many thanks for this link, though I have no ideas how to raise a case there.
    I'd ask our IT staff next week, before that let me keep posting at the forum side.

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