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Include file in spectre

sdv30

I have a very simple question.
I am trying to include a file in spectre. I have the simplest setup possible.
I am using an empty netlist (only entry is simulator lang=spectre) and using a stimulus file, where I have only one include statement:
include "RefClk.txt"
The RefClk.txt file has a pwl voltage source in spectre syntax (simulator lang=spectre at the top of the file). 
The issue is this: When I have a very low number of time/voltage pairs (e.g. 50) then the file is included and the simulation completes correctly.
When I try to include a more realistic pwl waveform with ~1000 time/voltage pairs, the simulations hangs.
Has anyone seen anything like that?
Thanks.

Parents

  • Here are the ocean file used for the simulation and the log file:
    -------------------
    simulator('spectre)

    ; PARAMETERS OF THE SIMULATION:
    tEnd= 1e-05 
    desVar("tEnd" tEnd)

    ;********************************************
    ; DESIGN SETUP:
    design("./netlist")
    stimulusFile("./stimulus" ?xlate nil)
    temp(25)
    analysis('tran ?stop "tEnd" ?errpreset "moderate")
    ;analysis('tran ?stop "tEnd" ?errpreset "conservative")
    option( 'gmin 1e-14 'vabstol 1e-16 'reltol 1e-10 'iabstol 1e-16 )
    resultsDir("./")
    run()
    results()
    selectResults('tran)
    outputs()

    ; REFERENCE CLOCK ZERO CROSSINGS:
    ZCref=cross(v("Vref") 0.5 0 'rising)

    out= outfile("ZCref.mat");
    fprintf(out "%% Zero Crossings \n")
    ocnPrint(?output out ?precision 20 ?numberNotation 'engineering ZCref )
    close(out)

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

    COPYRIGHT © 1992-2015  CADENCE DESIGN SYSTEMS INC.  ALL RIGHTS RESERVED.
             © 1992-2015  UNIX SYSTEMS Laboratories INC.,
                            Reproduced with permission.

    This Cadence Design Systems program and online documentation are
    proprietary/confidential information and may be disclosed/used only
    as authorized in a license agreement controlling such use and disclosure.

             RESTRICTED RIGHTS NOTICE (SHORT FORM)
    Use/reproduction/disclosure is subject to restriction
    set forth at FAR 1252.227-19 or its equivalent.
    Loading socket.cxt 
    Loading dal.cxt 
    Loading awv.cxt 
    Loading par.cxt 
    Loading alvs.cxt 
    Loading caa.cxt 
    Loading adexl.cxt 
    Loading te.cxt 
    Loading schHDL.cxt 
             Type ocnHelp() for help on OCEAN commands.
             Look in .../tools/dfII/samples/artist/OCEAN for example
             OCEAN scripts.
    nil
    ocean> *WARNING* (icLic-3) Could not get license Analog_Design_Environment_L
    ocean> ocean> ocean> *INFO* (icLic-25) License Analog_Design_Environment_XL ("95210") was used to run ADE L.
    Loading devCheck.cxt 
    Loading relXpert.cxt 
    spectre
    1e-05
    ocean> "1e-05"
    ocean> ocean> ocean> ocean> INFO (OCN-6058): amap directory is missing in the netlist directory. Schematic names will not
           get mapped to simulator names. Ensure that amap directory is present in the netlist
           directory.
    "./netlist"
    ocean> ("./stimulus")
    ocean> "25"
    ocean> "moderate"
    ocean> ocean> "1e-16"
    ocean> "./"
    ocean>
    Back to top
Reply

  • Here are the ocean file used for the simulation and the log file:
    -------------------
    simulator('spectre)

    ; PARAMETERS OF THE SIMULATION:
    tEnd= 1e-05 
    desVar("tEnd" tEnd)

    ;********************************************
    ; DESIGN SETUP:
    design("./netlist")
    stimulusFile("./stimulus" ?xlate nil)
    temp(25)
    analysis('tran ?stop "tEnd" ?errpreset "moderate")
    ;analysis('tran ?stop "tEnd" ?errpreset "conservative")
    option( 'gmin 1e-14 'vabstol 1e-16 'reltol 1e-10 'iabstol 1e-16 )
    resultsDir("./")
    run()
    results()
    selectResults('tran)
    outputs()

    ; REFERENCE CLOCK ZERO CROSSINGS:
    ZCref=cross(v("Vref") 0.5 0 'rising)

    out= outfile("ZCref.mat");
    fprintf(out "%% Zero Crossings \n")
    ocnPrint(?output out ?precision 20 ?numberNotation 'engineering ZCref )
    close(out)

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

    COPYRIGHT © 1992-2015  CADENCE DESIGN SYSTEMS INC.  ALL RIGHTS RESERVED.
             © 1992-2015  UNIX SYSTEMS Laboratories INC.,
                            Reproduced with permission.

    This Cadence Design Systems program and online documentation are
    proprietary/confidential information and may be disclosed/used only
    as authorized in a license agreement controlling such use and disclosure.

             RESTRICTED RIGHTS NOTICE (SHORT FORM)
    Use/reproduction/disclosure is subject to restriction
    set forth at FAR 1252.227-19 or its equivalent.
    Loading socket.cxt 
    Loading dal.cxt 
    Loading awv.cxt 
    Loading par.cxt 
    Loading alvs.cxt 
    Loading caa.cxt 
    Loading adexl.cxt 
    Loading te.cxt 
    Loading schHDL.cxt 
             Type ocnHelp() for help on OCEAN commands.
             Look in .../tools/dfII/samples/artist/OCEAN for example
             OCEAN scripts.
    nil
    ocean> *WARNING* (icLic-3) Could not get license Analog_Design_Environment_L
    ocean> ocean> ocean> *INFO* (icLic-25) License Analog_Design_Environment_XL ("95210") was used to run ADE L.
    Loading devCheck.cxt 
    Loading relXpert.cxt 
    spectre
    1e-05
    ocean> "1e-05"
    ocean> ocean> ocean> ocean> INFO (OCN-6058): amap directory is missing in the netlist directory. Schematic names will not
           get mapped to simulator names. Ensure that amap directory is present in the netlist
           directory.
    "./netlist"
    ocean> ("./stimulus")
    ocean> "25"
    ocean> "moderate"
    ocean> ocean> "1e-16"
    ocean> "./"
    ocean>
    Back to top
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