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ncsim: *F,INTERR: INTERNAL ERROR

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 Hi,

 Test : DRAM write and read up to 2GB . 

 Simulation fails with the following error. Can anbody please help me out?

ncsim(64): 06.20-p001: (c) Copyright 1995-2007 Cadence Design Systems, Inc.
ncsim: *F,INTERR: INTERNAL ERROR
Observed simulation time : 0 FS + 0
-----------------------------------------------------------------
The tool has encountered an unexpected condition and must exit.
Contact Cadence Design Systems customer support about this
problem and provide enough information to help us reproduce it,
including the logfile that contains this error message.
  TOOL: ncsim(64)       06.20-p001
  HOSTNAME: XIDCTEA1
  OPERATING SYSTEM: Linux 2.6.9-55.ELsmp #1 SMP Fri Apr 20 16:36:54 EDT 2007 x86_64
  MESSAGE: System virtual memory limit exceeded (0x100000d8/0x2b6bba4010)
-----------------------------------------------------------------

 

 

Note : I had checked the enough  physical memory and also virutaul memory available for the host.

Thanks,

Sankara

  •  Hi Sankara,

     As a 'step zero', download the latest IUS62  ISR (currently IUS06.20.012) and try with that.  Your 06.20-p001 build is a year old and a great deal would have been fixed between then and no.

    Aside:  Base releases are notoriously buggy, mostly because they haven't had an opportunity be get 'exercised' by the full set of Cadence customers.

     Hope this helps!

     Andrew.

  • Thanks Andrew,

    I will try with latest build and let you know

    -Sankar

  • Hi Andrew,

    I tried with ncsim   06.20-s012 also.It results in same isse(as shown below)

     

    ncsim: *F,INTERR: INTERNAL ERROR
    Observed simulation time : 0 FS + 0
    -----------------------------------------------------------------
    The tool has encountered an unexpected condition and must exit.
    Contact Cadence Design Systems customer support about this
    problem and provide enough information to help us reproduce it,
    including the logfile that contains this error message.
      TOOL: ncsim   06.20-s012
      HOSTNAME: XXXXXX

      OPERATING SYSTEM: Linux 2.4.21-32.0.1.EL #1 SMP Tue May 17 17:52:26 EDT 2005 x86_64
      MESSAGE: System virtual memory limit exceeded (0x100000b0/0xe2063008)
    -----------------------------------------------------------------

    Thanks

    -Sankar

  •  Hi Sankar,

    Best contact Cadence Support to see if they can lend a hand.

     Since it still happens in latest IUS62, it looks to me like it could be a really low-level OS/hardware issue.  Given that 2.4.x series kernel (versus more current 2.6.x series), my first suspicions would be that you're running too old a flavour of Linux for the hardware (x86_64, SMP). 

    ...Or perhaps you simply don't have enough RAM and/or swap space (to address the 'virtual memory limit exceeded' message).

    Andrew.

     

  •  Hi Sankar,

    I noticed that when you ran the 'p' version, the 64-bit binary was used.  Conversely when the s012 version was used it looks like the 32-bit binary was used.  Have you tried used the 64-bit version with the s012 release?

    By the way opening an SR with Cadence customer support is a great idea.

    Best regards,
    Mickey 

  •  Writing initial simulation snapshot: worklib.top:v
    ncsim: *F,INTERR: INTERNAL ERROR
    Observed simulation time : 0 FS + 0
    -----------------------------------------------------------------
    The tool has encountered an unexpected condition and must exit.
    Contact Cadence Design Systems customer support about this
    problem and provide enough information to help us reproduce it,
    including the logfile that contains this error message.
      TOOL: ncsim   06.20-s009
      HOSTNAME: bngl036
      OPERATING SYSTEM: Linux 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:56:44 EST 2007 x86_64
      MESSAGE: Unexpected signal #11, program terminated (null)

     

     

    can someone help  me out.. ?? :)) 

  • Hi Rohithosho, You are running into an internal error, the cause of which could be a variety of different things. The first thing I would recommend you do is open a service request with Cadence customer support by sending an email to support@cadence.com. Other things you could try... - remove any pli from the simulation and rerun to see if the cause is related to pli - remove sdf annotation and rerun to see if that is a symptom - add/remove access options. - download and rerun with the latest hotfix (8.20-s017) from downloads.cadence.com - if using -linedebug, remove it to see if that makes a diff are you running a power related simulation (using -lps_cpf ...) ? Best regards, Mickey

  • Hi，I am new here.

    when I use the composer to creat a verilog-Editer,there is a *F said interal error,I want to know what is wrong with that?

    And how to test a pin not only as an input but also as an output?

  •  I am running into a similar error.

    The error report generated has a message:

    csi-ncsim - CSI: *F,INTERR: INTERNAL EXCEPTION
    Observed simulation time : 0 FS + 0
    -----------------------------------------------------------------
    The tool has encountered an unexpected condition and must exit.
    Contact Cadence Design Systems customer support about this
    problem and provide enough information to help us reproduce it,
    including the logfile that contains this error message.
      TOOL:    ncsim    11.10-s050
      HOSTNAME: OSP-Server
      OPERATING SYSTEM: Linux 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64
      MESSAGE: missing unilang library

    I have not found any such library related to verilog or systemverilog. Is an OS related issue  or a compiler issue ?

     

  • I had a similar issue. It got solved by running the simulation on a more compute intense machine. Thanks to Andrew, for the pointer on memory insufficiency.

     

    ---

    ncsim: *F,INTERR: INTERNAL EXCEPTION

    Observed simulation time : 0 FS + 0

    -----------------------------------------------------------------

    The tool has encountered an unexpected condition and must exit.

    Contact Cadence Design Systems customer support about this problem and provide enough information to help us reproduce it, including the logfile that contains this error message.

     TOOL: ncsim(64) 13.10-p001

     HOSTNAME: kanjira

     OPERATING SYSTEM: Linux 2.6.18-371.4.1.el5 #1 SMP Wed Jan 8 18:42:07 EST 2014 x86_64

     MESSAGE: Unexpected signal #11, program terminated (null)

    --

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