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how can i print monte-carlo variance(like show in histograms graph)?

ronis

 hi,

i worte the foolowing script in order to cheak the effeft of VDD AND Temperature on the process variation.

the script is ok, but when i try to print the result to file using the commend:

 'ocnPrint(?output fp ts)'    (ts is expresion, fp isport to file)

it print some value, i think it the maximum result of the si,ulation of montecarlo.

i want to print only the  variance f the histograms graph of the result, how can i do it please???

 

the script is:

 

;====================== Set to XL mode =========================================
ocnSetXLMode()
ocnxlProjectDir( "/vlsi-netapp/vol1/home/stu18/simulation" )
ocnxlTargetCellView( "final_project" "FULL_ADDER_DML_TB" "adexl" )
ocnxlResultsLocation( "" )
ocnxlSimResultsLocation( "" )

;====================== Tests setup ============================================

;---------- Test "final_project:FULL_ADDER_DML_TB:1" -------------
ocnxlBeginTest("final_project:FULL_ADDER_DML_TB:1")
simulator( 'spectre )
design( "final_project" "FULL_ADDER_DML_TB" "schematic")
modelFile(
    '("/vlsi-netapp/vol2/PDK/TS18SL-MT/SPICE/DRS2_0018B_4_3_6/montetest.scs" "")
    '("/vlsi-netapp/vol2/PDK/TS18SL-MT/SPICE/DRS2_0018B_4_3_6/tsl018.scs" "tt_18")
    '("/vlsi-netapp/vol2/PDK/TS18SL-MT/SPICE/DRS2_0018B_4_3_6/tsl018.scs" "tt_18dll")
    '("/vlsi-netapp/vol2/PDK/TS18SL-MT/SPICE/DRS2_0018B_4_3_6/tsl018.scs" "tt_hv")
    '("/vlsi-netapp/vol2/PDK/TS18SL-MT/SPICE/DRS2_0018B_4_3_6/tsl018.scs" "tt_5v")
    '("/vlsi-netapp/vol2/PDK/TS18SL-MT/SPICE/DRS2_0018B_4_3_6/tsl018.scs" "tt_nlv")
)
vecFile(
    "/vlsi-netapp/vol1/home/stu18/vec_file"
)
hlcheck( "off" )
analysis('tran ?stop "1200000n"  ?errpreset "conservative"  )
desVar(      "GND" 0    )
desVar(      "VDD" 0.6    )
envOption(
    'analysisOrder  list("tran")
)
temp( 27 )
ocnxlOutputSignal( "/Cin" ?plot t)
ocnxlOutputSignal( "/CLK" ?plot t)
ocnxlOutputSignal( "/B" ?plot t)
ocnxlOutputSignal( "/A" ?plot t)
ocnxlOutputSignal( "/CARRY_OUT" ?plot t)
ocnxlOutputSignal( "/SUM" ?plot t)
ocnxlOutputExpr( "delay(VT(\"Cin\") (VAR(\"VDD\") / 2) 3 \"rising\" VT(\"SUM\") (VAR(\"VDD\") / 2) 4 \"rising\" 0 0 nil nil ?td1 0.0 ?td2 0.0 ?td2r0 nil ?stop nil)" ?name "t_s" ?plot t)
ocnxlEndTest() ; "final_project:FULL_ADDER_DML_TB:1"

;====================== Sweeps setup ===========================================
ocnxlSweepVar("GND" "0")
ocnxlSweepVar("VDD" "0.6")

;====================== Model Group setup ==========================================

;====================== Corners setup ==========================================
ocnxlCorner( "C1"
   '(
      ("variable" "temperature" "0:50:100")
      ("variable" "VDD" "0.2:0.2:0.6")
      ("model" "/vlsi-netapp/vol2/PDK/TS18SL-MT/SPICE/DRS2_0018B_4_3_6/montetest.scs" ?section "")
      ("model" "/vlsi-netapp/vol2/PDK/TS18SL-MT/SPICE/DRS2_0018B_4_3_6/tsl018.scs" ?section "\"ff_18\"")
      ("modelGroup" "")
   )
)

;====================== Test v/s corners setup =================================

;====================== Job setup ==============================================
ocnxlJobSetup( '(
    "blockemail" "1"
    "configuretimeout" "300"
    "distributionmethod" "Local"
    "lingertimeout" "300"
    "maxjobs" "1"
    "name" "ADE XL Default"
    "preemptivestart" "1"
    "runtimeout" "-1"
    "showerrorwhenretrying" "1"
    "showoutputlogerror" "0"
    "startmaxjobsimmed" "1"
    "starttimeout" "300"
) )

;====================== Disabled items =========================================

;====================== Run Mode Options ======================================
ocnxlMonteCarloOptions( ?mcMethod "all" ?mcNumPoints "2" ?mcNumBins "" ?samplingMode "random" ?saveAllPlots "0" ?useReference "0" ?donominal "1" ?monteCarloSeed "" ?mcStartingRunNumber "" ?saveProcess "1" ?saveMismatch "1" ?ignoreFlag "0" ?dutSummary "" )

;====================== Starting Point Info ======================================
fp=outfile( "../ronenronen.csv" "w")



ts=delay(VT("Cin") (VAR("VDD") / 2) 3 "rising" VT("SUM") (VAR("VDD") / 2) 4 "rising" 0 0 nil nil ?td1 0.0 ?td2 0.0 ?td2r0 nil ?stop nil)
fs=1/ts
;td=delay(VT("CLK") (VAR("VDD") / 2) 2 "rising" VT("SUM") (VAR("VDD") / 2) 1 "rising" 0 0 nil nil ?td1 0.0 ?td2 0.0 ?td2r0 nil ?stop nil)
;fd=1/td

ocnPrint(?output fp ts)
;====================== Run command ============================================
ocnxlRun( ?mode 'monteCarlo ?nominalCornerEnabled nil ?allCornersEnabled t ?allSweepsEnabled t)
ocnxlOutputSummary(?yieldSummary t ?exprSummary nil ?specSummary nil ?detailed nil)

;====================== End XL Mode command ===================================
ocnxlEndXLMode()
 

  • someone can help me with this???

  • This information will be output from the:

    ocnxlOutputSummary(?yieldSummary t ?exprSummary nil ?specSummary nil ?detailed nil)

    call (the ?yieldSummary t is the important bit). However, maybe you want that in a file? Currently there's no support to write this to a file (there's an enhancement request asking for that), but it's easily achievable:

    procedure(MyOcnxlOutputSummary(@key (output poport) @rest args)
      let(((poport output))
        apply(’ocnxlOutputSummary args)
      )
    )


    An example of using this:

    prt=outfile("summaryReport.txt")
    MyOcnxlOutputSummary(?output prt ?yieldSummary t ?exprSummary nil ?detailed nil)
    close(prt)

    Regards,

    Andrew.

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