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STB analysis stops running ... with no error in output.log

Praveen K

Hi,

 I'm using Cadence 5.10.47.... version. I'm facing a problem with STB analysis. I have done STB analysis before, so no problem in the setup of the analysis in the ADE window. When I run it, the icfb window says "Errors encountered in simulation.... please see the output log " ..... but in the output log file there is NO error shown, it just stops.... 

DC, dc sweep or transient or ac analysis runs without any problem for the same circuit..... 

 

Pasting below the output log file,

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

Cadence (R) Virtuoso (R) Spectre (R) Circuit Simulator

Version 7.2.0.400.isr14 32bit -- 27 Oct 2010

Copyright (C) 1989-2010 Cadence Design Systems, Inc. All rights reserved worldwide. Cadence, Virtuoso and Spectre are registered trademarks of Cadence Design Systems, Inc. All others are the property of their respective holders.

 

Protected by U.S. Patents: 

        5,610,847; 5,790,436; 5,812,431; 5,859,785; 5,949,992; 5,987,238; 

        6,088,523; 6,101,323; 6,151,698; 6,181,754; 6,260,176; 6,278,964; 

        6,349,272; 6,374,390; 6,493,849; 6,504,885; 6,618,837; 6,636,839; 

        6,778,025; 6,832,358; 6,851,097; 6,928,626; 7,024,652; 7,035,782; 

        7,085,700; 7,143,021; 7,493,240; 7,571,401.

 

Includes RSA BSAFE(R) Cryptographic or Security Protocol Software from RSA Security, Inc.

 

User: praveen   Host: greenland1   HostID: 7F0100   PID: 22041

Memory  available: 217.7024 MB  physical: 25.2681 GB

CPU Type: Intel(R) Xeon(R) CPU           X5670  @ 2.93GHz

          Processor PhysicalID CoreID Frequency

              0         1        0     2926.1

              1         0        0     2926.1

              2         1        1     2926.1

              3         0        1     2926.1

              4         1        2     2926.1

              5         0        2     2926.1

              6         1        8     2926.1

              7         0        8     2926.1

              8         1        9     2926.1

              9         0        9     2926.1

             10         1        10     2926.1

             11         0        10     2926.1

             12         1        0     2926.1

             13         0        0     2926.1

             14         1        1     2926.1

             15         0        1     2926.1

             16         1        2     2926.1

             17         0        2     2926.1

             18         1        8     2926.1

             19         0        8     2926.1

             20         1        9     2926.1

             21         0        9     2926.1

             22         1        10     2926.1

             23         0        10     2926.1

 

 

Simulating `input.scs' on greenland1 at 2:37:34 PM, Fri Aug 30, 2013 (process id: 22041).

Command line:

    /tools/MMSIM72/tools.lnx86/spectre/bin/32bit/spectre -env  \

        artist5.1.0 +escchars +log ../psf/spectre.out -format sst2 -raw  \

        ../psf +lqtimeout 900 -maxw 5 -maxn 5 input.scs

 

Loading /tools/MMSIM72/tools.lnx86/cmi/lib/5.0/libinfineon_sh.so ...

Loading /tools/MMSIM72/tools.lnx86/cmi/lib/5.0/libphilips_sh.so ...

Loading /tools/MMSIM72/tools.lnx86/cmi/lib/5.0/libsparam_sh.so ...

Loading /tools/MMSIM72/tools.lnx86/cmi/lib/5.0/libstmodels_sh.so ...

Auto-loading AHDL component.

Finished loading AHDL component in 0 s (elapsed).

Installed AHDL simulation interface.

Time for NDB Parsing: CPU = 138.978 ms, elapsed = 175.057 ms.

Time accumulated: CPU = 138.978 ms, elapsed = 175.057 ms.

Peak resident memory used = 25.8 Mbytes.

 

Existing shared object for module model_file_message1 is up to date.

Installed compiled interface for model_file_message1.

Existing shared object for module v_probe_sub is up to date.

Installed compiled interface for v_probe_sub.

Existing shared object for module v_probe_mos2 is up to date.

Installed compiled interface for v_probe_mos2.

Existing shared object for module v_probe_vbox is up to date.

Installed compiled interface for v_probe_vbox.

Existing shared object for module v_probe_rc is up to date.

Installed compiled interface for v_probe_rc.

Time for Elaboration: CPU = 37.994 ms, elapsed = 37.997 ms.

Time accumulated: CPU = 176.972 ms, elapsed = 213.177 ms.

Peak resident memory used = 60.9 Mbytes.

 

 

Notice from spectre in `CNP':`I23.C2', in `REG_CLAMP_DS1':`I23', during hierarchy flattening.

    I23.C2.c0: Terminals are connected together (to node `I23.net080').

Notice from spectre in `PR':`I23.R17', in `REG_CLAMP_DS1':`I23', during hierarchy flattening.

    I23.R17.r0: Terminals are connected together (to node `0').

Notice from spectre in `PR':`I23.R21', in `REG_CLAMP_DS1':`I23', during hierarchy flattening.

    I23.R21.r0: Terminals are connected together (to node `0').

Notice from spectre in `PR':`I23.R18', in `REG_CLAMP_DS1':`I23', during hierarchy flattening.

    I23.R18.r0: Terminals are connected together (to node `net40').

Notice from spectre in `PR':`I23.R19', in `REG_CLAMP_DS1':`I23', during hierarchy flattening.

    I23.R19.r0: Terminals are connected together (to node `net40').

        Further occurrences of this notice will be suppressed.

 

Time for EDB Visiting: CPU = 4.999 ms, elapsed = 5.35107 ms.

Time accumulated: CPU = 182.971 ms, elapsed = 218.66 ms.

Peak resident memory used = 61.6 Mbytes.

 

Loading /tools/MMSIM72/tools.lnx86/spectre/lib/mdl/libSpectreEH_sh.so ...

 

Notice from spectre during topology check.

    No DC path from node `I23.net080' to ground, Gmin installed to provide path.

 

 

Circuit inventory:

              nodes 49

             assert 86    

                bjt 17    

            bsim3v3 27    

          capacitor 98    

              diode 51    

model_file_message1 1     

           resistor 43    

       v_probe_mos2 27    

         v_probe_rc 4     

        v_probe_sub 51    

       v_probe_vbox 3     

            vsource 5     

 

 

Notice from spectre.

    5 notices suppressed.

 

Time for parsing: CPU = 43.994 ms, elapsed = 45.399 ms.

Time accumulated: CPU = 226.965 ms, elapsed = 264.204 ms.

Peak resident memory used = 69.5 Mbytes.

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

 Can you please help with this,

Praveen K  

  • Hi Praveen,

    My guess is that the simulator is crashing for some reason. You might get a bit more of a clue if you run spectre from the command line. If you go into the netlist directory for ADE, and invoke the "runSimulation" script - however, before doing this, please edit the script and remove the +inter=mpsc +mpssession=.... options from the command line (if they exist).

    Anyway, the best bet would be to try using a newer version of spectre. You're using MMSIM72 - a 3 year old subversion at that. Since then we've had MMSIM101, MMSIM111, and MMSIM121 major releases of MMSIM. Even if you're stuck with IC5141, hopefully you could use a newer simulator version...

    Kind Regards,

    Andrew.

  • Hi Andrew,

    Thanks for the quick reply and to some pointers in solving the problem.

    Fidgetting with your inputs, I found out that when the option dochecklimit=no in the simulation-->option--->analog is checked, then STB runs without any problem.

     Have to update the MMSIM anyways,

    thank you,

    Praveen Thomas 

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