Simulation Pause in AMSD

Discussion in 'Cadence' started by Debjit, Apr 3, 2010.

  1. Debjit

    Debjit Guest

    Dear All,

    Is it possible in AMS Designer to stop simulation , then change
    reltol, vabstol and other tolerance values and then restart the

    I prefer to use irun based OSS netlister and executables and from
    command line.
    I have the following versions in my Cadence Setup.

    ICFB :
    Spectre Version:
    NCSIM version: 08.20-s022:

    And also please suggest how to integrate Matlab/Simulank command
    thorugh irun (if possible).

    Thanks in advance.

    Thanks and Regards !!!!

    Cheers !!!

    Debjit, Apr 3, 2010
  2. Debjit

    Riad KACED Guest

    Hi Debjit,

    Yes this is possible if your run your AMS simulation in interactive
    mode, i.e. using Simvision.
    for more details, Please look at my comments in

    This is very handy in a PLL design for example. You may run the
    simulation up until the lock time, change the tolerances and then run
    the remaining sim.

    Riad KACED, Apr 6, 2010
  3. Debjit

    Debjit Guest

    Hi Riad,

    Thanks for the solution. Actually I have written a tcl fie to run all
    the things in batch mode. But I was unable to change the method and
    errpreset value during the interactive process. Is there any such
    command or any such tcl commands available so that I can incorporate
    them in the tcl files which will change the errpreset and the method
    of integration? I tried with ncsim -an amsControlSpectre.scs but it
    reported that the snapshots does not exist in the library. But I
    checked by restart -show command and got the snapshots in worklib. Can
    you enlight the problem please?

    Thanks in advance.


    Thanks and Regards !!!

    Debjit, Apr 6, 2010
  4. Debjit

    Riad KACED Guest


    You better stick a help ticket to your Cadence AE as I don't the
    answer for this question.
    I'll try to spare a few moments to investigate later on ... This may
    take sometime as I'm fairly busy these days.
    Again, best is to get in touch with your Cadence AE.

    Riad KACED, Apr 6, 2010
  5. Debjit

    Debjit Guest

    Dear Riad and Andrew,

    Its tough to get in touch with Cadence AE as there are lot of Red
    Tapism I have to go through as it is a university program

    Can Andrew suggest something? I ernestly request Andrew to suggest
    somethin on this issuse.

    Thanks in advance.

    Thanks and Regards !!!!

    Debjit, Apr 6, 2010
  6. Debjit wrote, on 04/06/10 16:56:
    Hi Debjit,

    I did reply to your post at

    Note that I have been on vacation, and that has limited my ability to respond in
    the forums. Note that responding to comp.cad.cadence, the Designer's Guide, and
    the Community Forums on are not part of my job - so I do so when
    I have free time, and that is often rather limited because of my actual job!


    Andrew Beckett, Apr 7, 2010
  7. Debjit

    Debjit Guest

    Dear Andrew,

    I respect a lot your concern for members like me who gets a lot of
    help from you in these groups and forums. I am really thankful to you
    for your valuable suggestions. I am also indebted to Riad for his
    kind suggestions. Why I asked to suggest something on the issue taking
    yours and Riad's name is because of the fact that I always find your
    suggestions appropriate and to the point. I have a strong belief on
    the suggestions you and Riad provide.

    Thanks one second for your help.

    Enjoy your vacation. And humbly beg your pardon for disturbing you
    during your vacation.

    Thanks and Regards !!!!

    Cheers !!!!

    Debjit, Apr 7, 2010
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